integration testing : Connection ans CallableStatement

agent/pom.xml

@@ -76,13 +76,26 @@
             <scope>test</scope>
         </dependency>
 
-        <!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-api -->
+
+        <!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-engine -->
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-engine</artifactId>
-            <version>5.4.0</version>
+            <version>5.9.0</version>
             <scope>test</scope>
         </dependency>
+
+
+        <!-- https://mvnrepository.com/artifact/org.junit.platform/junit-platform-suite-engine -->
+        <dependency>
+            <groupId>org.junit.platform</groupId>
+            <artifactId>junit-platform-suite-engine</artifactId>
+            <version>1.9.0</version>
+            <scope>test</scope>
+        </dependency>
+
+
+
     </dependencies>
 
 </project>

agent/src/main/java/com/fanruan/AgentStarter.java

@@ -16,6 +16,7 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.net.URI;
+import java.util.List;
 import java.util.Properties;
 import java.util.concurrent.TimeUnit;
 
@@ -37,7 +38,6 @@ public class AgentStarter {
         dispatcherImpl = new DispatcherImpl();
         try {
             createSocket(DBs);
-
         } catch (Exception e) {
             e.printStackTrace();
         }
@@ -94,6 +94,13 @@ public class AgentStarter {
         }
     }
 
+    public void shutDown(){
+        List<Socket> sockets = DispatcherImpl.CACHE.getSockets();
+        for(Socket socket : sockets){
+            socket.close();
+        }
+    }
+
     private void configDefaultSocket(Socket socket) throws IOException {
         socket.on(Socket.EVENT_CONNECT, objects -> {
             logger.info("default-socket connected!");

agent/src/main/java/com/fanruan/agent/jdbc/AgentArray.java

@@ -0,0 +1,73 @@
+package com.fanruan.agent.jdbc;
+
+import java.sql.Array;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.Map;
+
+/**
+ * @author Yichen Dai
+ * @date 2022/8/31 16:52
+ */
+public class AgentArray implements Array {
+    Array array;
+
+    AgentArray(Array array){
+        this.array = array;
+    }
+
+    @Override
+    public String getBaseTypeName() throws SQLException {
+        return array.getBaseTypeName();
+    }
+
+    @Override
+    public int getBaseType() throws SQLException {
+        return array.getBaseType();
+    }
+
+    @Override
+    public Object getArray() throws SQLException {
+        return array.getArray();
+    }
+
+    @Override
+    public Object getArray(Map<String, Class<?>> map) throws SQLException {
+        return array.getArray(map);
+    }
+
+    @Override
+    public Object getArray(long index, int count) throws SQLException {
+        return array.getArray(index, count);
+    }
+
+    @Override
+    public Object getArray(long index, int count, Map<String, Class<?>> map) throws SQLException {
+        return array.getArray(index, count, map);
+    }
+
+    @Override
+    public ResultSet getResultSet() throws SQLException {
+        return array.getResultSet();
+    }
+
+    @Override
+    public ResultSet getResultSet(Map<String, Class<?>> map) throws SQLException {
+        return array.getResultSet(map);
+    }
+
+    @Override
+    public ResultSet getResultSet(long index, int count) throws SQLException {
+        return array.getResultSet(index, count);
+    }
+
+    @Override
+    public ResultSet getResultSet(long index, int count, Map<String, Class<?>> map) throws SQLException {
+        return array.getResultSet(index, count, map);
+    }
+
+    @Override
+    public void free() throws SQLException {
+        array.free();
+    }
+}

agent/src/main/java/com/fanruan/agent/jdbc/AgentBlob.java

@@ -0,0 +1,73 @@
+package com.fanruan.agent.jdbc;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.sql.Blob;
+import java.sql.SQLException;
+
+/**
+ * @author Yichen Dai
+ * @date 2022/8/29 20:33
+ */
+public class AgentBlob implements Blob {
+    private Blob blob;
+
+    AgentBlob(Blob blob){
+        this.blob = blob;
+    }
+
+    @Override
+    public long length() throws SQLException {
+        return blob.length();
+    }
+
+    @Override
+    public byte[] getBytes(long pos, int length) throws SQLException {
+        return blob.getBytes(pos, length);
+    }
+
+    @Override
+    public InputStream getBinaryStream() throws SQLException {
+        return blob.getBinaryStream();
+    }
+
+    @Override
+    public long position(byte[] pattern, long start) throws SQLException {
+        return blob.position(pattern, start);
+    }
+
+    @Override
+    public long position(Blob pattern, long start) throws SQLException {
+        return blob.position(pattern, start);
+    }
+
+    @Override
+    public int setBytes(long pos, byte[] bytes) throws SQLException {
+        return blob.setBytes(pos, bytes);
+    }
+
+    @Override
+    public int setBytes(long pos, byte[] bytes, int offset, int len) throws SQLException {
+        return blob.setBytes(pos, bytes, offset, len);
+    }
+
+    @Override
+    public OutputStream setBinaryStream(long pos) throws SQLException {
+        return blob.setBinaryStream(pos);
+    }
+
+    @Override
+    public void truncate(long len) throws SQLException {
+        blob.truncate(len);
+    }
+
+    @Override
+    public void free() throws SQLException {
+        blob.free();
+    }
+
+    @Override
+    public InputStream getBinaryStream(long pos, long length) throws SQLException {
+        return blob.getBinaryStream(pos, length);
+    }
+}

agent/src/main/java/com/fanruan/agent/jdbc/AgentClob.java

@@ -0,0 +1,85 @@
+package com.fanruan.agent.jdbc;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.Reader;
+import java.io.Writer;
+import java.sql.Clob;
+import java.sql.SQLException;
+
+/**
+ * @author Yichen Dai
+ * @date 2022/8/29 20:34
+ */
+public class AgentClob implements Clob {
+    private Clob clob;
+
+    AgentClob(Clob clob){
+        this.clob = clob;
+    }
+
+    @Override
+    public long length() throws SQLException {
+        return clob.length();
+    }
+
+    @Override
+    public String getSubString(long pos, int length) throws SQLException {
+        return clob.getSubString(pos, length);
+    }
+
+    @Override
+    public Reader getCharacterStream() throws SQLException {
+        return clob.getCharacterStream();
+    }
+
+    @Override
+    public InputStream getAsciiStream() throws SQLException {
+        return clob.getAsciiStream();
+    }
+
+    @Override
+    public long position(String searchstr, long start) throws SQLException {
+        return clob.position(searchstr, start);
+    }
+
+    @Override
+    public long position(Clob searchstr, long start) throws SQLException {
+        return clob.position(searchstr, start);
+    }
+
+    @Override
+    public int setString(long pos, String str) throws SQLException {
+        return clob.setString(pos, str);
+    }
+
+    @Override
+    public int setString(long pos, String str, int offset, int len) throws SQLException {
+        return clob.setString(pos, str, offset, len);
+    }
+
+    @Override
+    public OutputStream setAsciiStream(long pos) throws SQLException {
+        return clob.setAsciiStream(pos);
+    }
+
+    @Override
+    public Writer setCharacterStream(long pos) throws SQLException {
+        return clob.setCharacterStream(pos);
+    }
+
+    @Override
+    public void truncate(long len) throws SQLException {
+        clob.truncate(len);
+    }
+
+    @Override
+    public void free() throws SQLException {
+        clob.free();
+    }
+
+    @Override
+    public Reader getCharacterStream(long pos, long length) throws SQLException {
+        return clob.getCharacterStream(pos, length);
+    }
+}

agent/src/main/java/com/fanruan/agent/jdbc/AgentDataBaseMetaData.java

@@ -0,0 +1,895 @@
+package com.fanruan.agent.jdbc;
+
+import java.sql.*;
+
+/**
+ * @author Yichen Dai
+ * @date 2022/8/25 11:22
+ */
+public class AgentDataBaseMetaData implements DatabaseMetaData {
+    DatabaseMetaData metaData;
+
+    public AgentDataBaseMetaData(DatabaseMetaData metaData){
+        this.metaData = metaData;
+    }
+
+    @Override
+    public boolean allProceduresAreCallable() throws SQLException {
+        return metaData.allProceduresAreCallable();
+    }
+
+    @Override
+    public boolean allTablesAreSelectable() throws SQLException {
+        return metaData.allTablesAreSelectable();
+    }
+
+    @Override
+    public String getURL() throws SQLException {
+        return metaData.getURL();
+    }
+
+    @Override
+    public String getUserName() throws SQLException {
+        return metaData.getUserName();
+    }
+
+    @Override
+    public boolean isReadOnly() throws SQLException {
+        return metaData.isReadOnly();
+    }
+
+    @Override
+    public boolean nullsAreSortedHigh() throws SQLException {
+        return metaData.nullsAreSortedHigh();
+    }
+
+    @Override
+    public boolean nullsAreSortedLow() throws SQLException {
+        return metaData.nullsAreSortedLow();
+    }
+
+    @Override
+    public boolean nullsAreSortedAtStart() throws SQLException {
+        return metaData.nullsAreSortedAtStart();
+    }
+
+    @Override
+    public boolean nullsAreSortedAtEnd() throws SQLException {
+        return metaData.nullsAreSortedAtStart();
+    }
+
+    @Override
+    public String getDatabaseProductName() throws SQLException {
+        return metaData.getDatabaseProductName();
+    }
+
+    @Override
+    public String getDatabaseProductVersion() throws SQLException {
+        return metaData.getDatabaseProductVersion();
+    }
+
+    @Override
+    public String getDriverName() throws SQLException {
+        return metaData.getDriverName();
+    }
+
+    @Override
+    public String getDriverVersion() throws SQLException {
+        return metaData.getDriverVersion();
+    }
+
+    @Override
+    public int getDriverMajorVersion() {
+        return metaData.getDriverMajorVersion();
+    }
+
+    @Override
+    public int getDriverMinorVersion() {
+        return metaData.getDriverMinorVersion();
+    }
+
+    @Override
+    public boolean usesLocalFiles() throws SQLException {
+        return metaData.usesLocalFiles();
+    }
+
+    @Override
+    public boolean usesLocalFilePerTable() throws SQLException {
+        return metaData.usesLocalFilePerTable();
+    }
+
+    @Override
+    public boolean supportsMixedCaseIdentifiers() throws SQLException {
+        return metaData.supportsMixedCaseIdentifiers();
+    }
+
+    @Override
+    public boolean storesUpperCaseIdentifiers() throws SQLException {
+        return metaData.storesUpperCaseIdentifiers();
+    }
+
+    @Override
+    public boolean storesLowerCaseIdentifiers() throws SQLException {
+        return metaData.storesLowerCaseIdentifiers();
+    }
+
+    @Override
+    public boolean storesMixedCaseIdentifiers() throws SQLException {
+        return metaData.supportsMixedCaseIdentifiers();
+    }
+
+    @Override
+    public boolean supportsMixedCaseQuotedIdentifiers() throws SQLException {
+        return metaData.supportsMixedCaseQuotedIdentifiers();
+    }
+
+    @Override
+    public boolean storesUpperCaseQuotedIdentifiers() throws SQLException {
+        return metaData.storesUpperCaseQuotedIdentifiers();
+    }
+
+    @Override
+    public boolean storesLowerCaseQuotedIdentifiers() throws SQLException {
+        return metaData.storesLowerCaseQuotedIdentifiers();
+    }
+
+    @Override
+    public boolean storesMixedCaseQuotedIdentifiers() throws SQLException {
+        return metaData.supportsMixedCaseQuotedIdentifiers();
+    }
+
+    @Override
+    public String getIdentifierQuoteString() throws SQLException {
+        return metaData.getIdentifierQuoteString();
+    }
+
+    @Override
+    public String getSQLKeywords() throws SQLException {
+        return metaData.getSQLKeywords();
+    }
+
+    @Override
+    public String getNumericFunctions() throws SQLException {
+        return metaData.getNumericFunctions();
+    }
+
+    @Override
+    public String getStringFunctions() throws SQLException {
+        return metaData.getStringFunctions();
+    }
+
+    @Override
+    public String getSystemFunctions() throws SQLException {
+        return metaData.getSystemFunctions();
+    }
+
+    @Override
+    public String getTimeDateFunctions() throws SQLException {
+        return metaData.getTimeDateFunctions();
+    }
+
+    @Override
+    public String getSearchStringEscape() throws SQLException {
+        return metaData.getSearchStringEscape();
+    }
+
+    @Override
+    public String getExtraNameCharacters() throws SQLException {
+        return metaData.getExtraNameCharacters();
+    }
+
+    @Override
+    public boolean supportsAlterTableWithAddColumn() throws SQLException {
+        return metaData.supportsAlterTableWithAddColumn();
+    }
+
+    @Override
+    public boolean supportsAlterTableWithDropColumn() throws SQLException {
+        return metaData.supportsAlterTableWithDropColumn();
+    }
+
+    @Override
+    public boolean supportsColumnAliasing() throws SQLException {
+        return metaData.supportsColumnAliasing();
+    }
+
+    @Override
+    public boolean nullPlusNonNullIsNull() throws SQLException {
+        return metaData.nullPlusNonNullIsNull();
+    }
+
+    @Override
+    public boolean supportsConvert() throws SQLException {
+        return metaData.supportsConvert();
+    }
+
+    @Override
+    public boolean supportsConvert(int fromType, int toType) throws SQLException {
+        return metaData.supportsConvert();
+    }
+
+    @Override
+    public boolean supportsTableCorrelationNames() throws SQLException {
+        return metaData.supportsTableCorrelationNames();
+    }
+
+    @Override
+    public boolean supportsDifferentTableCorrelationNames() throws SQLException {
+        return metaData.supportsDifferentTableCorrelationNames();
+    }
+
+    @Override
+    public boolean supportsExpressionsInOrderBy() throws SQLException {
+        return metaData.supportsExpressionsInOrderBy();
+    }
+
+    @Override
+    public boolean supportsOrderByUnrelated() throws SQLException {
+        return metaData.supportsOrderByUnrelated();
+    }
+
+    @Override
+    public boolean supportsGroupBy() throws SQLException {
+        return metaData.supportsGroupBy();
+    }
+
+    @Override
+    public boolean supportsGroupByUnrelated() throws SQLException {
+        return metaData.supportsGroupByUnrelated();
+    }
+
+    @Override
+    public boolean supportsGroupByBeyondSelect() throws SQLException {
+        return metaData.supportsGroupByBeyondSelect();
+    }
+
+    @Override
+    public boolean supportsLikeEscapeClause() throws SQLException {
+        return metaData.supportsLikeEscapeClause();
+    }
+
+    @Override
+    public boolean supportsMultipleResultSets() throws SQLException {
+        return metaData.supportsMultipleResultSets();
+    }
+
+    @Override
+    public boolean supportsMultipleTransactions() throws SQLException {
+        return metaData.supportsMultipleTransactions();
+    }
+
+    @Override
+    public boolean supportsNonNullableColumns() throws SQLException {
+        return metaData.supportsNonNullableColumns();
+    }
+
+    @Override
+    public boolean supportsMinimumSQLGrammar() throws SQLException {
+        return metaData.supportsMinimumSQLGrammar();
+    }
+
+    @Override
+    public boolean supportsCoreSQLGrammar() throws SQLException {
+        return metaData.supportsCoreSQLGrammar();
+    }
+
+    @Override
+    public boolean supportsExtendedSQLGrammar() throws SQLException {
+        return metaData.supportsExtendedSQLGrammar();
+    }
+
+    @Override
+    public boolean supportsANSI92EntryLevelSQL() throws SQLException {
+        return metaData.supportsANSI92EntryLevelSQL();
+    }
+
+    @Override
+    public boolean supportsANSI92IntermediateSQL() throws SQLException {
+        return metaData.supportsANSI92IntermediateSQL();
+    }
+
+    @Override
+    public boolean supportsANSI92FullSQL() throws SQLException {
+        return metaData.supportsANSI92FullSQL();
+    }
+
+    @Override
+    public boolean supportsIntegrityEnhancementFacility() throws SQLException {
+        return metaData.supportsIntegrityEnhancementFacility();
+    }
+
+    @Override
+    public boolean supportsOuterJoins() throws SQLException {
+        return metaData.supportsOuterJoins();
+    }
+
+    @Override
+    public boolean supportsFullOuterJoins() throws SQLException {
+        return metaData.supportsFullOuterJoins();
+    }
+
+    @Override
+    public boolean supportsLimitedOuterJoins() throws SQLException {
+        return metaData.supportsLimitedOuterJoins();
+    }
+
+    @Override
+    public String getSchemaTerm() throws SQLException {
+        return metaData.getSchemaTerm();
+    }
+
+    @Override
+    public String getProcedureTerm() throws SQLException {
+        return metaData.getProcedureTerm();
+    }
+
+    @Override
+    public String getCatalogTerm() throws SQLException {
+        return metaData.getCatalogTerm();
+    }
+
+    @Override
+    public boolean isCatalogAtStart() throws SQLException {
+        return metaData.isCatalogAtStart();
+    }
+
+    @Override
+    public String getCatalogSeparator() throws SQLException {
+        return metaData.getCatalogSeparator();
+    }
+
+    @Override
+    public boolean supportsSchemasInDataManipulation() throws SQLException {
+        return metaData.supportsSchemasInDataManipulation();
+    }
+
+    @Override
+    public boolean supportsSchemasInProcedureCalls() throws SQLException {
+        return metaData.supportsSchemasInProcedureCalls();
+    }
+
+    @Override
+    public boolean supportsSchemasInTableDefinitions() throws SQLException {
+        return metaData.supportsSchemasInTableDefinitions();
+    }
+
+    @Override
+    public boolean supportsSchemasInIndexDefinitions() throws SQLException {
+        return metaData.supportsSchemasInIndexDefinitions();
+    }
+
+    @Override
+    public boolean supportsSchemasInPrivilegeDefinitions() throws SQLException {
+        return metaData.supportsSchemasInPrivilegeDefinitions();
+    }
+
+    @Override
+    public boolean supportsCatalogsInDataManipulation() throws SQLException {
+        return metaData.supportsCatalogsInDataManipulation();
+    }
+
+    @Override
+    public boolean supportsCatalogsInProcedureCalls() throws SQLException {
+        return metaData.supportsCatalogsInProcedureCalls();
+    }
+
+    @Override
+    public boolean supportsCatalogsInTableDefinitions() throws SQLException {
+        return metaData.supportsCatalogsInTableDefinitions();
+    }
+
+    @Override
+    public boolean supportsCatalogsInIndexDefinitions() throws SQLException {
+        return metaData.supportsCatalogsInIndexDefinitions();
+    }
+
+    @Override
+    public boolean supportsCatalogsInPrivilegeDefinitions() throws SQLException {
+        return metaData.supportsCatalogsInPrivilegeDefinitions();
+    }
+
+    @Override
+    public boolean supportsPositionedDelete() throws SQLException {
+        return metaData.supportsPositionedDelete();
+    }
+
+    @Override
+    public boolean supportsPositionedUpdate() throws SQLException {
+        return metaData.supportsPositionedUpdate();
+    }
+
+    @Override
+    public boolean supportsSelectForUpdate() throws SQLException {
+        return metaData.supportsSelectForUpdate();
+    }
+
+    @Override
+    public boolean supportsStoredProcedures() throws SQLException {
+        return metaData.supportsStoredProcedures();
+    }
+
+    @Override
+    public boolean supportsSubqueriesInComparisons() throws SQLException {
+        return metaData.supportsSubqueriesInComparisons();
+    }
+
+    @Override
+    public boolean supportsSubqueriesInExists() throws SQLException {
+        return metaData.supportsSubqueriesInExists();
+    }
+
+    @Override
+    public boolean supportsSubqueriesInIns() throws SQLException {
+        return metaData.supportsSubqueriesInIns();
+    }
+
+    @Override
+    public boolean supportsSubqueriesInQuantifieds() throws SQLException {
+        return metaData.supportsSubqueriesInQuantifieds();
+    }
+
+    @Override
+    public boolean supportsCorrelatedSubqueries() throws SQLException {
+        return metaData.supportsCorrelatedSubqueries();
+    }
+
+    @Override
+    public boolean supportsUnion() throws SQLException {
+        return metaData.supportsUnion();
+    }
+
+    @Override
+    public boolean supportsUnionAll() throws SQLException {
+        return metaData.supportsUnionAll();
+    }
+
+    @Override
+    public boolean supportsOpenCursorsAcrossCommit() throws SQLException {
+        return metaData.supportsOpenCursorsAcrossCommit();
+    }
+
+    @Override
+    public boolean supportsOpenCursorsAcrossRollback() throws SQLException {
+        return metaData.supportsOpenCursorsAcrossRollback();
+    }
+
+    @Override
+    public boolean supportsOpenStatementsAcrossCommit() throws SQLException {
+        return metaData.supportsOpenStatementsAcrossCommit();
+    }
+
+    @Override
+    public boolean supportsOpenStatementsAcrossRollback() throws SQLException {
+        return metaData.supportsOpenStatementsAcrossRollback();
+    }
+
+    @Override
+    public int getMaxBinaryLiteralLength() throws SQLException {
+        return metaData.getMaxBinaryLiteralLength();
+    }
+
+    @Override
+    public int getMaxCharLiteralLength() throws SQLException {
+        return metaData.getMaxCharLiteralLength();
+    }
+
+    @Override
+    public int getMaxColumnNameLength() throws SQLException {
+        return metaData.getMaxColumnNameLength();
+    }
+
+    @Override
+    public int getMaxColumnsInGroupBy() throws SQLException {
+        return metaData.getMaxColumnsInGroupBy();
+    }
+
+    @Override
+    public int getMaxColumnsInIndex() throws SQLException {
+        return metaData.getMaxColumnsInIndex();
+    }
+
+    @Override
+    public int getMaxColumnsInOrderBy() throws SQLException {
+        return metaData.getMaxColumnsInOrderBy();
+    }
+
+    @Override
+    public int getMaxColumnsInSelect() throws SQLException {
+        return metaData.getMaxColumnsInSelect();
+    }
+
+    @Override
+    public int getMaxColumnsInTable() throws SQLException {
+        return metaData.getMaxColumnsInTable();
+    }
+
+    @Override
+    public int getMaxConnections() throws SQLException {
+        return metaData.getMaxConnections();
+    }
+
+    @Override
+    public int getMaxCursorNameLength() throws SQLException {
+        return metaData.getMaxCursorNameLength();
+    }
+
+    @Override
+    public int getMaxIndexLength() throws SQLException {
+        return metaData.getMaxIndexLength();
+    }
+
+    @Override
+    public int getMaxSchemaNameLength() throws SQLException {
+        return metaData.getMaxSchemaNameLength();
+    }
+
+    @Override
+    public int getMaxProcedureNameLength() throws SQLException {
+        return metaData.getMaxProcedureNameLength();
+    }
+
+    @Override
+    public int getMaxCatalogNameLength() throws SQLException {
+        return metaData.getMaxCatalogNameLength();
+    }
+
+    @Override
+    public int getMaxRowSize() throws SQLException {
+        return metaData.getMaxRowSize();
+    }
+
+    @Override
+    public boolean doesMaxRowSizeIncludeBlobs() throws SQLException {
+        return metaData.doesMaxRowSizeIncludeBlobs();
+    }
+
+    @Override
+    public int getMaxStatementLength() throws SQLException {
+        return metaData.getMaxStatementLength();
+    }
+
+    @Override
+    public int getMaxStatements() throws SQLException {
+        return metaData.getMaxStatements();
+    }
+
+    @Override
+    public int getMaxTableNameLength() throws SQLException {
+        return metaData.getMaxTableNameLength();
+    }
+
+    @Override
+    public int getMaxTablesInSelect() throws SQLException {
+        return metaData.getMaxTablesInSelect();
+    }
+
+    @Override
+    public int getMaxUserNameLength() throws SQLException {
+        return metaData.getMaxUserNameLength();
+    }
+
+    @Override
+    public int getDefaultTransactionIsolation() throws SQLException {
+        return metaData.getDefaultTransactionIsolation();
+    }
+
+    @Override
+    public boolean supportsTransactions() throws SQLException {
+        return metaData.supportsTransactions();
+    }
+
+    @Override
+    public boolean supportsTransactionIsolationLevel(int level) throws SQLException {
+        return metaData.supportsTransactionIsolationLevel(level);
+    }
+
+    @Override
+    public boolean supportsDataDefinitionAndDataManipulationTransactions() throws SQLException {
+        return metaData.supportsDataDefinitionAndDataManipulationTransactions();
+    }
+
+    @Override
+    public boolean supportsDataManipulationTransactionsOnly() throws SQLException {
+        return metaData.supportsDataManipulationTransactionsOnly();
+    }
+
+    @Override
+    public boolean dataDefinitionCausesTransactionCommit() throws SQLException {
+        return metaData.dataDefinitionCausesTransactionCommit();
+    }
+
+    @Override
+    public boolean dataDefinitionIgnoredInTransactions() throws SQLException {
+        return metaData.dataDefinitionIgnoredInTransactions();
+    }
+
+    @Override
+    public ResultSet getProcedures(String catalog, String schemaPattern, String procedureNamePattern) throws SQLException {
+        return metaData.getProcedures(catalog, schemaPattern, procedureNamePattern);
+    }
+
+    @Override
+    public ResultSet getProcedureColumns(String catalog, String schemaPattern, String procedureNamePattern, String columnNamePattern) throws SQLException {
+        return metaData.getProcedureColumns(catalog, schemaPattern, procedureNamePattern, columnNamePattern);
+    }
+
+    @Override
+    public ResultSet getTables(String catalog, String schemaPattern, String tableNamePattern, String[] types) throws SQLException {
+        return metaData.getTables(catalog, schemaPattern, tableNamePattern, types);
+    }
+
+    @Override
+    public ResultSet getSchemas() throws SQLException {
+        return metaData.getSchemas();
+    }
+
+    @Override
+    public ResultSet getCatalogs() throws SQLException {
+        return metaData.getCatalogs();
+    }
+
+    @Override
+    public ResultSet getTableTypes() throws SQLException {
+        return metaData.getTableTypes();
+    }
+
+    @Override
+    public ResultSet getColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern) throws SQLException {
+        return metaData.getColumns(catalog, schemaPattern, tableNamePattern, columnNamePattern);
+    }
+
+    @Override
+    public ResultSet getColumnPrivileges(String catalog, String schema, String table, String columnNamePattern) throws SQLException {
+        return metaData.getColumnPrivileges(catalog, schema, table, columnNamePattern);
+    }
+
+    @Override
+    public ResultSet getTablePrivileges(String catalog, String schemaPattern, String tableNamePattern) throws SQLException {
+        return metaData.getTablePrivileges(catalog, schemaPattern, tableNamePattern);
+    }
+
+    @Override
+    public ResultSet getBestRowIdentifier(String catalog, String schema, String table, int scope, boolean nullable) throws SQLException {
+        return metaData.getBestRowIdentifier(catalog, schema, table, scope, nullable);
+    }
+
+    @Override
+    public ResultSet getVersionColumns(String catalog, String schema, String table) throws SQLException {
+        return metaData.getVersionColumns(catalog, schema, table);
+    }
+
+    @Override
+    public ResultSet getPrimaryKeys(String catalog, String schema, String table) throws SQLException {
+        return metaData.getPrimaryKeys(catalog, schema, table);
+    }
+
+    @Override
+    public ResultSet getImportedKeys(String catalog, String schema, String table) throws SQLException {
+        return metaData.getImportedKeys(catalog, schema, table);
+    }
+
+    @Override
+    public ResultSet getExportedKeys(String catalog, String schema, String table) throws SQLException {
+        return metaData.getExportedKeys(catalog, schema, table);
+    }
+
+    @Override
+    public ResultSet getCrossReference(String parentCatalog, String parentSchema, String parentTable, String foreignCatalog, String foreignSchema, String foreignTable) throws SQLException {
+        return metaData.getCrossReference(parentCatalog, parentSchema, parentTable, foreignCatalog, foreignSchema, foreignTable);
+    }
+
+    @Override
+    public ResultSet getTypeInfo() throws SQLException {
+        return metaData.getTypeInfo();
+    }
+
+    @Override
+    public ResultSet getIndexInfo(String catalog, String schema, String table, boolean unique, boolean approximate) throws SQLException {
+        return metaData.getIndexInfo(catalog, schema, table, unique, approximate);
+    }
+
+    @Override
+    public boolean supportsResultSetType(int type) throws SQLException {
+        return metaData.supportsResultSetType(type);
+    }
+
+    @Override
+    public boolean supportsResultSetConcurrency(int type, int concurrency) throws SQLException {
+        return metaData.supportsResultSetConcurrency(type, concurrency);
+    }
+
+    @Override
+    public boolean ownUpdatesAreVisible(int type) throws SQLException {
+        return metaData.ownUpdatesAreVisible(type);
+    }
+
+    @Override
+    public boolean ownDeletesAreVisible(int type) throws SQLException {
+        return metaData.ownDeletesAreVisible(type);
+    }
+
+    @Override
+    public boolean ownInsertsAreVisible(int type) throws SQLException {
+        return metaData.ownInsertsAreVisible(type);
+    }
+
+    @Override
+    public boolean othersUpdatesAreVisible(int type) throws SQLException {
+        return metaData.othersUpdatesAreVisible(type);
+    }
+
+    @Override
+    public boolean othersDeletesAreVisible(int type) throws SQLException {
+        return metaData.othersDeletesAreVisible(type);
+    }
+
+    @Override
+    public boolean othersInsertsAreVisible(int type) throws SQLException {
+        return metaData.othersInsertsAreVisible(type);
+    }
+
+    @Override
+    public boolean updatesAreDetected(int type) throws SQLException {
+        return metaData.updatesAreDetected(type);
+    }
+
+    @Override
+    public boolean deletesAreDetected(int type) throws SQLException {
+        return metaData.deletesAreDetected(type);
+    }
+
+    @Override
+    public boolean insertsAreDetected(int type) throws SQLException {
+        return metaData.insertsAreDetected(type);
+    }
+
+    @Override
+    public boolean supportsBatchUpdates() throws SQLException {
+        return metaData.supportsBatchUpdates();
+    }
+
+    @Override
+    public ResultSet getUDTs(String catalog, String schemaPattern, String typeNamePattern, int[] types) throws SQLException {
+        return metaData.getUDTs(catalog, schemaPattern, typeNamePattern, types);
+    }
+
+    @Override
+    public Connection getConnection() throws SQLException {
+        return metaData.getConnection();
+    }
+
+    @Override
+    public boolean supportsSavepoints() throws SQLException {
+        return metaData.supportsSavepoints();
+    }
+
+    @Override
+    public boolean supportsNamedParameters() throws SQLException {
+        return metaData.supportsNamedParameters();
+    }
+
+    @Override
+    public boolean supportsMultipleOpenResults() throws SQLException {
+        return metaData.supportsMultipleOpenResults();
+    }
+
+    @Override
+    public boolean supportsGetGeneratedKeys() throws SQLException {
+        return metaData.supportsGetGeneratedKeys();
+    }
+
+    @Override
+    public ResultSet getSuperTypes(String catalog, String schemaPattern, String typeNamePattern) throws SQLException {
+        return metaData.getSuperTypes(catalog, schemaPattern, typeNamePattern);
+    }
+
+    @Override
+    public ResultSet getSuperTables(String catalog, String schemaPattern, String tableNamePattern) throws SQLException {
+        return metaData.getSuperTypes(catalog, schemaPattern, tableNamePattern);
+    }
+
+    @Override
+    public ResultSet getAttributes(String catalog, String schemaPattern, String typeNamePattern, String attributeNamePattern) throws SQLException {
+        return metaData.getAttributes(catalog, schemaPattern, typeNamePattern, attributeNamePattern);
+    }
+
+    @Override
+    public boolean supportsResultSetHoldability(int holdability) throws SQLException {
+        return metaData.supportsResultSetHoldability(holdability);
+    }
+
+    @Override
+    public int getResultSetHoldability() throws SQLException {
+        return metaData.getResultSetHoldability();
+    }
+
+    @Override
+    public int getDatabaseMajorVersion() throws SQLException {
+        return metaData.getDatabaseMajorVersion();
+    }
+
+    @Override
+    public int getDatabaseMinorVersion() throws SQLException {
+        return metaData.getDatabaseMinorVersion();
+    }
+
+    @Override
+    public int getJDBCMajorVersion() throws SQLException {
+        return metaData.getJDBCMajorVersion();
+    }
+
+    @Override
+    public int getJDBCMinorVersion() throws SQLException {
+        return metaData.getJDBCMinorVersion();
+    }
+
+    @Override
+    public int getSQLStateType() throws SQLException {
+        return metaData.getSQLStateType();
+    }
+
+    @Override
+    public boolean locatorsUpdateCopy() throws SQLException {
+        return metaData.locatorsUpdateCopy();
+    }
+
+    @Override
+    public boolean supportsStatementPooling() throws SQLException {
+        return metaData.supportsStatementPooling();
+    }
+
+    @Override
+    public RowIdLifetime getRowIdLifetime() throws SQLException {
+        return metaData.getRowIdLifetime();
+    }
+
+    @Override
+    public ResultSet getSchemas(String catalog, String schemaPattern) throws SQLException {
+        return metaData.getSchemas(catalog, schemaPattern);
+    }
+
+    @Override
+    public boolean supportsStoredFunctionsUsingCallSyntax() throws SQLException {
+        return metaData.supportsStoredFunctionsUsingCallSyntax();
+    }
+
+    @Override
+    public boolean autoCommitFailureClosesAllResultSets() throws SQLException {
+        return metaData.autoCommitFailureClosesAllResultSets();
+    }
+
+    @Override
+    public ResultSet getClientInfoProperties() throws SQLException {
+        return metaData.getClientInfoProperties();
+    }
+
+    @Override
+    public ResultSet getFunctions(String catalog, String schemaPattern, String functionNamePattern) throws SQLException {
+        return metaData.getFunctions(catalog, schemaPattern, functionNamePattern);
+    }
+
+    @Override
+    public ResultSet getFunctionColumns(String catalog, String schemaPattern, String functionNamePattern, String columnNamePattern) throws SQLException {
+        return metaData.getFunctionColumns(catalog, schemaPattern, functionNamePattern, columnNamePattern);
+    }
+
+    @Override
+    public ResultSet getPseudoColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern) throws SQLException {
+        return metaData.getPseudoColumns(catalog, schemaPattern, tableNamePattern, columnNamePattern);
+    }
+
+    @Override
+    public boolean generatedKeyAlwaysReturned() throws SQLException {
+        return metaData.generatedKeyAlwaysReturned();
+    }
+
+    @Override
+    public <T> T unwrap(Class<T> iface) throws SQLException {
+        return metaData.unwrap(iface);
+    }
+
+    @Override
+    public boolean isWrapperFor(Class<?> iface) throws SQLException {
+        return metaData.isWrapperFor(iface);
+    }
+}

agent/src/main/java/com/fanruan/agent/jdbc/AgentParameterMetaData.java

@@ -0,0 +1,73 @@
+package com.fanruan.agent.jdbc;
+
+import java.sql.ParameterMetaData;
+import java.sql.SQLException;
+
+/**
+ * @author Yichen Dai
+ * @date 2022/8/25 16:41
+ */
+
+
+public class AgentParameterMetaData implements ParameterMetaData {
+    private ParameterMetaData metaData;
+
+    public AgentParameterMetaData(ParameterMetaData metaData){
+        this.metaData = metaData;
+    }
+
+    @Override
+    public int getParameterCount() throws SQLException {
+        return metaData.getParameterCount();
+    }
+
+    @Override
+    public int isNullable(int param) throws SQLException {
+        return metaData.isNullable(param);
+    }
+
+    @Override
+    public boolean isSigned(int param) throws SQLException {
+        return metaData.isSigned(param);
+    }
+
+    @Override
+    public int getPrecision(int param) throws SQLException {
+        return metaData.getPrecision(param);
+    }
+
+    @Override
+    public int getScale(int param) throws SQLException {
+        return metaData.getScale(param);
+    }
+
+    @Override
+    public int getParameterType(int param) throws SQLException {
+        return metaData.getParameterType(param);
+    }
+
+    @Override
+    public String getParameterTypeName(int param) throws SQLException {
+        return metaData.getParameterTypeName(param);
+    }
+
+    @Override
+    public String getParameterClassName(int param) throws SQLException {
+        return metaData.getParameterClassName(param);
+    }
+
+    @Override
+    public int getParameterMode(int param) throws SQLException {
+        return metaData.getParameterMode(param);
+    }
+
+    @Override
+    public <T> T unwrap(Class<T> iface) throws SQLException {
+        return metaData.unwrap(iface);
+    }
+
+    @Override
+    public boolean isWrapperFor(Class<?> iface) throws SQLException {
+        return metaData.isWrapperFor(iface);
+    }
+}

agent/src/main/java/com/fanruan/agent/jdbc/AgentStruct.java

@@ -0,0 +1,32 @@
+package com.fanruan.agent.jdbc;
+
+import java.sql.SQLException;
+import java.sql.Struct;
+import java.util.Map;
+
+/**
+ * @author Yichen Dai
+ * @date 2022/8/31 17:04
+ */
+public class AgentStruct implements Struct {
+    Struct struct;
+
+    AgentStruct(Struct struct){
+        this.struct = struct;
+    }
+
+    @Override
+    public String getSQLTypeName() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public Object[] getAttributes() throws SQLException {
+        return new Object[0];
+    }
+
+    @Override
+    public Object[] getAttributes(Map<String, Class<?>> map) throws SQLException {
+        return new Object[0];
+    }
+}

agent/src/main/java/com/fanruan/agent/jdbc/connection/AgentConnection.java

@@ -1,5 +1,7 @@
 package com.fanruan.agent.jdbc.connection;
 
+import com.fanruan.agent.jdbc.AgentDataBaseMetaData;
+import com.fanruan.agent.jdbc.statement.AgentCallableStatement;
 import com.fanruan.agent.jdbc.statement.AgentPreparedStatement;
 import com.fanruan.agent.jdbc.statement.AgentStatement;
 
@@ -32,7 +34,8 @@ public class AgentConnection implements Connection {
 
     @Override
     public CallableStatement prepareCall(String sql) throws SQLException {
-        return conn.prepareCall(sql);
+        CallableStatement cst = this.conn.prepareCall(sql);
+        return new AgentCallableStatement(cst);
     }
 
     @Override
@@ -72,7 +75,7 @@ public class AgentConnection implements Connection {
 
     @Override
     public DatabaseMetaData getMetaData() throws SQLException {
-        return conn.getMetaData();
+        return new AgentDataBaseMetaData(conn.getMetaData());
     }
 
     @Override
@@ -117,17 +120,17 @@ public class AgentConnection implements Connection {
 
     @Override
     public Statement createStatement(int resultSetType, int resultSetConcurrency) throws SQLException {
-        return conn.createStatement(resultSetType, resultSetConcurrency);
+        return new AgentStatement(conn.createStatement(resultSetType, resultSetConcurrency));
     }
 
     @Override
     public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
-        return conn.prepareStatement(sql, resultSetType, resultSetConcurrency);
+        return new AgentPreparedStatement(conn.prepareStatement(sql, resultSetType, resultSetConcurrency));
     }
 
     @Override
     public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
-        return conn.prepareCall(sql, resultSetType, resultSetConcurrency);
+        return new AgentCallableStatement(conn.prepareCall(sql, resultSetType, resultSetConcurrency));
     }
 
     @Override
@@ -172,32 +175,32 @@ public class AgentConnection implements Connection {
 
     @Override
     public Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
-        return conn.createStatement(resultSetType, resultSetConcurrency, resultSetHoldability);
+        return new AgentStatement(conn.createStatement(resultSetType, resultSetConcurrency, resultSetHoldability));
     }
 
     @Override
     public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
-        return conn.prepareStatement(sql, resultSetType, resultSetConcurrency, resultSetHoldability);
+        return new AgentPreparedStatement(conn.prepareStatement(sql, resultSetType, resultSetConcurrency, resultSetHoldability));
     }
 
     @Override
     public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
-        return conn.prepareCall(sql, resultSetType, resultSetConcurrency, resultSetHoldability);
+        return new AgentCallableStatement(conn.prepareCall(sql, resultSetType, resultSetConcurrency, resultSetHoldability));
     }
 
     @Override
     public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys) throws SQLException {
-        return conn.prepareStatement(sql, autoGeneratedKeys);
+        return new AgentPreparedStatement(conn.prepareStatement(sql, autoGeneratedKeys));
     }
 
     @Override
     public PreparedStatement prepareStatement(String sql, int[] columnIndexes) throws SQLException {
-        return conn.prepareStatement(sql, columnIndexes);
+        return new AgentPreparedStatement(conn.prepareStatement(sql, columnIndexes));
     }
 
     @Override
     public PreparedStatement prepareStatement(String sql, String[] columnNames) throws SQLException {
-        return conn.prepareStatement(sql, columnNames);
+        return new AgentPreparedStatement(conn.prepareStatement(sql, columnNames));
     }
 
     @Override

agent/src/main/java/com/fanruan/agent/jdbc/statement/AgentStatement.java

@@ -4,6 +4,9 @@ import com.fanruan.agent.jdbc.resultset.AgentResultSet;
 
 import java.sql.*;
 
+/**
+ * @author Yichen Dai
+ */
 public class AgentStatement implements Statement {
 
     final private Statement st;

agent/src/main/java/com/fanruan/cache/BeanCache.java

@@ -31,4 +31,12 @@ public interface BeanCache {
      */
     void cacheInstance(String ID, Object o);
 
+    /**
+     * verify whether the Instance is exit
+     * @param ID The unique num of a cache instance, It comes from the RPC request ID,
+     *           which asked to create the instance.
+     * @return   if it exits, true, otherwise false.
+     */
+    boolean containsInstance(String ID);
+
 }

agent/src/main/java/com/fanruan/cache/BeanCacheImpl.java

@@ -38,4 +38,9 @@ public class BeanCacheImpl implements BeanCache{
     public void cacheInstance(String ID, Object o){
         CACHE.put(ID, o);
     }
+
+    @Override
+    public boolean containsInstance(String ID) {
+        return CACHE.containsKey(ID);
+    }
 }

agent/src/main/java/com/fanruan/cache/Cache.java

@@ -2,6 +2,7 @@ package com.fanruan.cache;
 
 import io.socket.client.Socket;
 
+import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
@@ -37,6 +38,12 @@ public interface Cache {
      */
     Socket getSocket(String dbName);
 
+    /**
+     * get sockets
+     * @return a list of socket
+     */
+    List<Socket> getSockets();
+
     /**
      * register the socket of specific nameSpace/db
      * @param dbName the key of cache

agent/src/main/java/com/fanruan/cache/CacheImpl.java

@@ -2,6 +2,10 @@ package com.fanruan.cache;
 
 import io.socket.client.Socket;
 
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
 /**
  * @author Yichen Dai
  * @date 2022/8/16 16:13
@@ -22,6 +26,15 @@ public class CacheImpl implements Cache{
         return socket;
     }
 
+    @Override
+    public List<Socket> getSockets() {
+        List<Socket> res = new ArrayList<>();
+        for(Map.Entry<String, Socket> e : SOCKET_MAP.entrySet()){
+            res.add(e.getValue());
+        }
+        return res;
+    }
+
     @Override
     public void registerBeanCache(String dbName, BeanCacheImpl beanCache) {
         BEAN_CACHE.put(dbName, beanCache);

agent/src/main/java/com/fanruan/handler/DispatcherHelper.java

@@ -30,10 +30,25 @@ public class DispatcherHelper {
             "Statement",
             "PreparedStatement",
             "ResultSet",
+            "MetaData",
+            "Clob",
+            "Blob",
+            "Array",
+            "Struct"
 
     };
 
+    public static boolean isInCacheList(Object obj){
+        if(obj == null) {
+            return false;
+        }
+        return isInCacheList(obj.getClass().getName());
+    }
+
     public static boolean isInCacheList(String className){
+        if (className == null){
+            return false;
+        }
         for(String s : CACHE_LIST){
             if(Pattern.matches(".*" + s + ".*", className)){
                 return true;
@@ -43,6 +58,9 @@ public class DispatcherHelper {
     }
 
     public static boolean isWraps(Class<?> clz){
+        if(clz == null) {
+            return false;
+        }
         return WRAPPER_CLASS_MAP.containsKey(getClassName(clz.getName()));
     }
 
@@ -51,15 +69,11 @@ public class DispatcherHelper {
     }
 
     public static String getClassName(String fullyQualifiedClassName){
-        String[] arr = fullyQualifiedClassName.split("\\.");
+        String[] arr = fullyQualifiedClassName.trim().split("\\.");
         int n = arr.length;
-        if(n == 0) {
-            throw new RuntimeException("the class name invoked is wrong");
+        if(n < 1) {
+            throw new RuntimeException("the class's name invoked is wrong");
         }
         return arr[n-1];
     }
-
-    public static String transformName(String name){
-        return name.replace("servicejdbc", "agentjdbc");
-    }
 }

agent/src/main/java/com/fanruan/handler/DispatcherImpl.java

@@ -6,6 +6,7 @@ import com.fanruan.pojo.message.RpcRequest;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
+import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 
 
@@ -27,8 +28,8 @@ public class DispatcherImpl implements Dispatcher{
         Object res = null;
         try {
             res = invokeAsRequest(rpcRequest, beanCache);
-        }catch (Exception e){
-            RESPONSE_EMITTER_IMPL.sendError(CACHE.getSocket(dbName), rpcRequest, e);
+        }catch (Throwable t){
+            RESPONSE_EMITTER_IMPL.sendError(CACHE.getSocket(dbName), rpcRequest, t);
         }
 
         if(res != null && !DispatcherHelper.isInCacheList(res.getClass().getName())){
@@ -39,7 +40,7 @@ public class DispatcherImpl implements Dispatcher{
     }
 
     @Override
-    public Object invokeAsRequest(RpcRequest rpcRequest, BeanCacheImpl beanCache) throws Exception{
+    public Object invokeAsRequest(RpcRequest rpcRequest, BeanCacheImpl beanCache) throws Throwable {
         String fullName = rpcRequest.getServiceClassName();
         Class<?> clazz = Class.forName(fullName);
         String methodName = rpcRequest.getMethodName();
@@ -80,28 +81,25 @@ public class DispatcherImpl implements Dispatcher{
                 }
             }
             method = clazz.getDeclaredMethod(methodName, argTypes);
-
-
         }
 
+        Object res = null;
 
-        Object res = method.invoke(calledClassInstance, args);
-
-        if(CLOSE_NAME.equals(methodName)){
-            beanCache.removeInstances(IDToInvoke);
+        try{
+            res = method.invoke(calledClassInstance, args);
+        }catch (InvocationTargetException e){
+            throw e.getCause();
         }
 
         // Cached some instances need to be invoke later.
-        // Some method return null, so determine the value of `res` before referencing it.
-        if(res != null){
-            String resClassName = res.getClass().getName();
-            if(DispatcherHelper.isInCacheList(resClassName)) {
+        // Some method return null
+
+        if(DispatcherHelper.isInCacheList(res)) {
             beanCache.cacheInstance(rpcRequest.getID(), res);
         }
-            logger.debug("invoke" + className + "-" + methodName + " and return a instance of" + res.getClass().getName());
-        }else{
-            logger.debug("invoke" + className + "-" + methodName + " and no return value");
-        }
+
+        logger.debug("invoke" + className + "-" + methodName + " and return value : " + res);
+
         return res;
     }
 

agent/src/main/java/com/fanruan/handler/ResponseEmitter.java

@@ -20,9 +20,9 @@ public interface ResponseEmitter {
      * Send failure response when error occur while handle request.
      * @param socket
      * @param rpcRequest
-     * @param e Exception happened while handle request.
+     * @param t Exception happened while handle request.
      */
-    void sendError(Socket socket, RpcRequest rpcRequest, Exception e);
+    void sendError(Socket socket, RpcRequest rpcRequest, Throwable t);
 
     /**
      * Send success response with data asked by request.

agent/src/main/java/com/fanruan/handler/ResponseEmitterImpl.java

@@ -22,11 +22,11 @@ public class ResponseEmitterImpl implements ResponseEmitter{
     }
 
     @Override
-    public void sendError(Socket socket, RpcRequest rpcRequest, Exception e){
+    public void sendError(Socket socket, RpcRequest rpcRequest, Throwable t){
         RpcResponse rpcResponse = new RpcResponse();
         rpcResponse.setResult("Some errors happened when AgentID: " + AgentStarter.AgentID + " "
                 + rpcRequest.getMethodName() + " is being invoked!" + "\n"
-                + "Error Message: " + e.getMessage()
+                + "Error Message: " + t.getMessage()
                 + " and check your code")
                 .setID(rpcRequest.getID())
                 .setStatus(false);

agent/src/main/java/com/fanruan/pojo/message/RpcRequest.java

@@ -10,7 +10,6 @@ import lombok.experimental.Accessors;
 @Accessors(chain = true)
 public class RpcRequest {
     private String ID;
-//    private boolean binding;
     private String IDToInvoke;
     private String serviceClassName;
     private String methodName;

agent/src/test/java/HSQLTest.java

@@ -25,7 +25,7 @@ public class HSQLTest {
     void getConnection() throws SQLException {
         Connection conn = null;
         try {
-            conn = DriverManager.getConnection("jdbc:hsqldb:mem:test", "sa", "");
+            conn = DriverManager.getConnection("jdbc:hsqldb:mem:test;sql.syntax_mys=true", "sa", "");
             Assertions.assertNotNull(conn, "can't get connection");
         } catch (SQLException e) {
             e.printStackTrace();
@@ -34,6 +34,29 @@ public class HSQLTest {
         }
     }
 
+    private static String createStoredProcedure ="CREATE PROCEDURE get_city_name(" +
+            "IN c_id INT, " +
+            "OUT city_name varchar(20)) " +
+            "READS SQL DATA " +
+            "BEGIN ATOMIC " +
+            "   SELECT city.name INTO city_name FROM city WHERE id = c_id; " +
+            "END;";
+
+    @Test
+    public void test() throws SQLException {
+        Connection conn = DriverManager.getConnection("jdbc:hsqldb:mem:test;sql.syntax_mys=true", "sa", "");
+        Statement statement = conn.createStatement();
+        statement.executeUpdate("CREATE TABLE city (id INTEGER, name varchar(20)); ");
+        statement.executeUpdate("INSERT INTO city VALUES (1, '成都'), (2, '上海'); ");
+
+        statement.execute(createStoredProcedure);
+        CallableStatement callableStatement = conn.prepareCall("{call get_city_name(?, ?)}");
+        callableStatement.setInt(1, 2);
+        callableStatement.registerOutParameter(2, Types.VARCHAR);
+        callableStatement.execute();
+        System.out.println(callableStatement.getString(2));
+    }
+
     /**
      * test to create statement instance and prepareStatement, create table, select form table, delete from table
      */
@@ -44,7 +67,7 @@ public class HSQLTest {
         PreparedStatement pst = null;
         ResultSet rs = null;
         try {
-            conn = DriverManager.getConnection("jdbc:hsqldb:mem:test", "sa", "");
+            conn = DriverManager.getConnection("jdbc:hsqldb:mem:test;sql.syntax_mys=true", "sa", "");
             st = conn.createStatement();
             st.executeUpdate("DROP TABLE student IF EXISTS;");
 
@@ -82,6 +105,8 @@ public class HSQLTest {
                 Assertions.assertEquals(rs.getString("student_address"), addressStrings[num-1]);
                 num++;
             }
+
+
         } catch (Exception e) {
             e.printStackTrace();
         } finally {

agent/src/test/java/Test.java

@@ -2,6 +2,8 @@ import com.fanruan.AgentStarter;
 import com.fanruan.utils.DBProperties;
 import io.socket.client.Socket;
 
+import java.util.HashMap;
+
 
 public class Test {
 
@@ -27,7 +29,6 @@ public class Test {
 
         Socket socket = AgentStarter.dispatcherImpl.CACHE.getSocket(DBProperties.HSQL[0]);
         socket.connect();
-
     }
 
 }

agent/src/test/java/TestSuite.java

@@ -0,0 +1,14 @@
+import org.junit.platform.suite.api.IncludeClassNamePatterns;
+import org.junit.platform.suite.api.SelectPackages;
+import org.junit.platform.suite.api.Suite;
+
+/**
+ * @author Yichen Dai
+ * @date 2022/8/23 15:04
+ */
+
+@SelectPackages({"com.fanruan"})
+@Suite
+@IncludeClassNamePatterns(".*Test.*")
+public class TestSuite {
+}

agent/src/test/java/com/fanruan/cache/BeanCacheImplTest.java

@@ -0,0 +1,24 @@
+package com.fanruan.cache;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * @author Yichen Dai
+ * @date 2022/8/22 19:54
+ */
+class BeanCacheImplTest {
+
+    @Test
+    void getCachedInstances() {
+    }
+
+    @Test
+    void removeInstances() {
+    }
+
+    @Test
+    void cacheInstance() {
+    }
+}

agent/src/test/java/com/fanruan/cache/CacheImplTest.java

@@ -0,0 +1,44 @@
+package com.fanruan.cache;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * @author Yichen Dai
+ * @date 2022/8/22 19:54
+ */
+class CacheImplTest {
+
+    @Test
+    void registerSocket() {
+    }
+
+    @Test
+    void getSocket() {
+    }
+
+    @Test
+    void registerBeanCache() {
+    }
+
+    @Test
+    void getBeanCache() {
+    }
+
+    @Test
+    void testRegisterSocket() {
+    }
+
+    @Test
+    void testGetSocket() {
+    }
+
+    @Test
+    void testRegisterBeanCache() {
+    }
+
+    @Test
+    void testGetBeanCache() {
+    }
+}

agent/src/test/java/com/fanruan/handler/DispatcherHelperTest.java

@@ -0,0 +1,71 @@
+package com.fanruan.handler;
+
+import com.fanruan.agent.jdbc.driver.AgentDriver;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+
+
+/**
+ * @author Yichen Dai
+ * @date 2022/8/22 15:07
+ */
+class DispatcherHelperTest{
+
+
+
+    @Test
+    void isInCacheList() {
+        Assertions.assertTrue(DispatcherHelper.isInCacheList(new AgentDriver()));
+
+        Assertions.assertTrue(DispatcherHelper.isInCacheList("com.fanruan.agent.jdbc.agentDriver"));
+        Assertions.assertTrue(DispatcherHelper.isInCacheList("com.fanruan.agent.jdbc.agentConnection"));
+        Assertions.assertTrue(DispatcherHelper.isInCacheList("com.fanruan.agent.jdbc.agentStatement"));
+        Assertions.assertTrue(DispatcherHelper.isInCacheList("com.fanruan.agent.jdbc.agentPrepareStatement"));
+        Assertions.assertTrue(DispatcherHelper.isInCacheList("com.fanruan.agent.jdbc.agentResultSet"));
+
+        Assertions.assertFalse(DispatcherHelper.isInCacheList("java.lang.String"));
+        Assertions.assertFalse(DispatcherHelper.isInCacheList("java.lang.Integer"));
+        Assertions.assertFalse(DispatcherHelper.isInCacheList("com.fanruan.agent.cache.BeanCache"));
+        Assertions.assertFalse(DispatcherHelper.isInCacheList(""));
+        Assertions.assertFalse(DispatcherHelper.isInCacheList(null));
+
+    }
+
+    @Test
+    void isWraps() {
+        Assertions.assertTrue(DispatcherHelper.isWraps(java.lang.Byte.class));
+        Assertions.assertTrue(DispatcherHelper.isWraps(java.lang.Character.class));
+        Assertions.assertTrue(DispatcherHelper.isWraps(java.lang.Short.class));
+        Assertions.assertTrue(DispatcherHelper.isWraps(java.lang.Integer.class));
+        Assertions.assertTrue(DispatcherHelper.isWraps(java.lang.Long.class));
+        Assertions.assertTrue(DispatcherHelper.isWraps(java.lang.Boolean.class));
+        Assertions.assertTrue(DispatcherHelper.isWraps(java.lang.Float.class));
+        Assertions.assertTrue(DispatcherHelper.isWraps(java.lang.Double.class));
+
+        Assertions.assertFalse(DispatcherHelper.isWraps(Integer.TYPE));
+        Assertions.assertFalse(DispatcherHelper.isWraps(java.lang.String.class));
+        Assertions.assertFalse(DispatcherHelper.isWraps(null));
+    }
+
+    @Test
+    void castToPrimitiveClass() {
+        Assertions.assertEquals(Byte.TYPE, DispatcherHelper.castToPrimitiveClass(Byte.class));
+        Assertions.assertEquals(Character.TYPE, DispatcherHelper.castToPrimitiveClass(Character.class));
+        Assertions.assertEquals(Short.TYPE, DispatcherHelper.castToPrimitiveClass(Short.class));
+        Assertions.assertEquals(Integer.TYPE, DispatcherHelper.castToPrimitiveClass(Integer.class));
+        Assertions.assertEquals(Long.TYPE, DispatcherHelper.castToPrimitiveClass(Long.class));
+        Assertions.assertEquals(Boolean.TYPE, DispatcherHelper.castToPrimitiveClass(Boolean.class));
+        Assertions.assertEquals(Float.TYPE, DispatcherHelper.castToPrimitiveClass(Float.class));
+        Assertions.assertEquals(Double.TYPE, DispatcherHelper.castToPrimitiveClass(Double.class));
+    }
+
+    @Test
+    void getClassName() {
+        Assertions.assertEquals("agentDriver", DispatcherHelper.getClassName("com.fanruan.agent.jdbc.agentDriver"));
+        Assertions.assertEquals("agentDriver", DispatcherHelper.getClassName("  com.fanruan.agent.jdbc.agentDriver  "));
+        Assertions.assertEquals("fakeName", DispatcherHelper.getClassName("fakeName"));
+        Assertions.assertEquals("", DispatcherHelper.getClassName(""));
+        Assertions.assertThrows(RuntimeException.class, () -> DispatcherHelper.getClassName(null));
+    }
+}

agent/src/test/java/com/fanruan/handler/DispatcherImplTest.java

@@ -0,0 +1,27 @@
+package com.fanruan.handler;
+
+import org.junit.jupiter.api.Test;
+
+/**
+ * @author Yichen Dai
+ * @date 2022/8/22 14:47
+ */
+class DispatcherImplTest {
+
+    @Test
+    void doDispatch() {
+
+    }
+
+    @Test
+    void invokeAsRequest() {
+    }
+
+    @Test
+    void testDoDispatch() {
+    }
+
+    @Test
+    void testInvokeAsRequest() {
+    }
+}

service/pom.xml

@@ -69,11 +69,20 @@
             <version>1.18.22</version>
         </dependency>
 
-        <!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-api -->
+        <!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-engine -->
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-engine</artifactId>
-            <version>5.4.0</version>
+            <version>5.9.0</version>
+            <scope>test</scope>
+        </dependency>
+
+
+        <!-- https://mvnrepository.com/artifact/org.junit.platform/junit-platform-suite-engine -->
+        <dependency>
+            <groupId>org.junit.platform</groupId>
+            <artifactId>junit-platform-suite-engine</artifactId>
+            <version>1.9.0</version>
             <scope>test</scope>
         </dependency>
 

service/src/main/java/com/fanruan/ServerStater.java

@@ -58,6 +58,10 @@ public class ServerStater{
 
     }
 
+    public void shutDown(){
+        server.stop();
+    }
+
     private void addEvent(SocketIONamespace nameSpace){
         logger.debug("配置事件监听");
         nameSpace.addConnectListener(client -> {
@@ -180,7 +184,7 @@ public class ServerStater{
                 client.disconnect();
             }
 
-            // 缓存连接
+            // remove client
             ClientCache.deleteClient(agentID, dbName);
             logger.info("agentID: " + agentID + "连接关闭");
             logger.info("agentID: " + agentID + "连接已删除");

service/src/main/java/com/fanruan/pojo/message/RpcRequest.java

@@ -14,7 +14,6 @@ public class RpcRequest {
      *  In the project, they are Drive( MyDriver ), Connection( MyConnection ), Statement( MyStatement ),
      *  PreparedStatement( MyPreparedStatement ), ResultSet( MyResult ).
      */
-//    private boolean binding;
     private String ID;
     private String IDToInvoke;
     private String serviceClassName;

service/src/test/java/AutoStarter.java

@@ -1,22 +0,0 @@
-import com.fanruan.ServerStater;
-import com.fanruan.utils.DBProperties;
-
-/**
- * @author Yichen Dai
- * @date 2022/8/18 9:54
- */
-public class AutoStarter {
-
-    static {
-        String[][] DBs = new String[][]{
-                DBProperties.HSQL,
-        };
-        new ServerStater(DBs);
-
-        try {
-            Class.forName("com.fanruan.service.jdbc.driver.ServiceDriver");
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-    }
-}

service/src/test/java/ServiceTest.java

@@ -15,7 +15,7 @@ import java.util.concurrent.FutureTask;
  * @author Yichen Dai
  * @date 2022/8/18 9:49
  */
-public class ServiceTest extends AutoStarter{
+public class ServiceTest {
 
     @BeforeEach
     void listen() throws ExecutionException, InterruptedException {

service/src/test/java/TestSuite.java

@@ -0,0 +1,13 @@
+import org.junit.platform.suite.api.IncludeClassNamePatterns;
+import org.junit.platform.suite.api.SelectPackages;
+import org.junit.platform.suite.api.Suite;
+
+/**
+ * @author Yichen Dai
+ * @date 2022/8/23 15:30
+ */
+@SelectPackages({"com.fanruan"})
+@IncludeClassNamePatterns(".*Test.*")
+@Suite
+public class TestSuite {
+}

test/pom.xml

@@ -29,14 +29,25 @@
             <version>1.0-SNAPSHOT</version>
         </dependency>
 
-        <!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-api -->
+        <!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-engine -->
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-engine</artifactId>
-            <version>5.4.0</version>
+            <version>5.9.0</version>
             <scope>test</scope>
         </dependency>
 
+
+        <!-- https://mvnrepository.com/artifact/org.junit.platform/junit-platform-suite-engine -->
+        <dependency>
+            <groupId>org.junit.platform</groupId>
+            <artifactId>junit-platform-suite-engine</artifactId>
+            <version>1.9.0</version>
+            <scope>test</scope>
+        </dependency>
+
+
+
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-api</artifactId>

test/src/test/java/TestSuite.java

@@ -0,0 +1,16 @@
+import org.junit.platform.suite.api.IncludeClassNamePatterns;
+import org.junit.platform.suite.api.SelectPackages;
+import org.junit.platform.suite.api.Suite;
+
+/**
+ * @author Yichen Dai
+ * @date 2022/8/23 14:39
+ */
+
+@SelectPackages({"com.fanruan"})
+@IncludeClassNamePatterns(".*Test.*")
+@Suite
+public class TestSuite {
+}
+
+

test/src/test/java/TestUtil.java

@@ -1,170 +0,0 @@
-
-import com.fanruan.AgentStarter;
-import com.fanruan.ServerStater;
-
-import com.fanruan.service.jdbc.driver.ServiceDriver;
-import com.fanruan.proxy.ProxyFactory;
-import com.fanruan.utils.DBProperties;
-import org.junit.jupiter.api.*;
-
-import java.sql.*;
-import java.util.Properties;
-
-/**
- * @author Yichen Dai
- * @date 2022/8/18 15:27
- */
-
-public class TestUtil {
-
-    static Connection conn = null;
-    static Statement st = null;
-    static PreparedStatement pst = null;
-    static ResultSet rs = null;
-
-    static void configService(){
-        String[][] DBs = new String[][]{
-                DBProperties.HSQL,
-        };
-        new ServerStater(DBs);
-    }
-
-    static void configAgent(){
-        String[][] DBs = new String[][]{
-                DBProperties.HSQL,
-        };
-        new AgentStarter(DBs);
-    }
-
-    @BeforeAll
-    static void autoConfig(){
-        configService();
-        configAgent();
-        try {
-            // 等待socket连接
-            Thread.sleep(2000);
-        } catch (InterruptedException e) {
-            e.printStackTrace();
-        }
-    }
-
-    @Test
-    void testConnect() throws SQLException {
-        // 建立连接
-        Properties info = new Properties();
-        info.setProperty("user", "sa");
-        info.setProperty("password", "");
-        info.setProperty("agentID", "1001");
-        info.setProperty("agentDBName", DBProperties.HSQL[0]);
-
-        Driver driver = (ServiceDriver) ProxyFactory.getProxy(ServiceDriver.class, null);
-        conn = driver.connect("jdbc:hsqldb:mem:test", info);
-    }
-
-
-
-
-    @Test
-    void testCreateTable() throws SQLException {
-        testConnect();
-        // 创建 statement
-        st = conn.createStatement();
-
-        // 创建表
-        int num = st.executeUpdate("DROP TABLE student IF EXISTS;");
-
-        Assertions.assertEquals(0, num);
-
-
-        num = st.executeUpdate("CREATE TABLE student (" +
-                "student_id INTEGER GENERATED BY DEFAULT AS IDENTITY " +
-                "(START WITH 1, INCREMENT BY 1) NOT NULL," +
-                "student_name VARCHAR(100) NOT NULL," +
-                "student_address VARCHAR(100) NOT NULL," +
-                "PRIMARY KEY (student_id)" +
-                ");");
-
-        Assertions.assertEquals(0, num);
-    }
-
-    @Test
-    void testInsert() throws SQLException {
-        testCreateTable();
-        // 插入数据
-        int num = st.executeUpdate("INSERT INTO student VALUES" +
-                "(1, '张三', '上海')," +
-                "(2, '李四', '北京')," +
-                "(3, '王五', '成都');");
-
-        Assertions.assertEquals(3, num);
-    }
-
-    @Test
-    void testUpdate() throws SQLException {
-        testInsert();
-        // 预查询语句 删除指定 ID
-        pst = conn.prepareStatement("UPDATE student" +
-                " SET student_name = '李华', student_address = '杭州'"+
-                "WHERE student_id = ?");
-
-        Assertions.assertNotNull(pst);
-
-        pst.setInt(1, 1);
-
-        int num = pst.executeUpdate();
-
-        Assertions.assertEquals(1, num);
-    }
-
-    @Test
-    void testDelete() throws SQLException {
-        testInsert();
-        // 预查询语句 删除指定 ID
-        pst = conn.prepareStatement("delete from student where student_id = ?");
-
-        Assertions.assertNotNull(pst);
-
-        pst.setInt(1, 1);
-
-        int num = pst.executeUpdate();
-
-        Assertions.assertEquals(1, num);
-    }
-
-    @Test
-    void testSelect() throws SQLException {
-        testInsert();
-        rs = st.executeQuery("select * from student");
-
-        String[] nameStrings = new String[]{"张三", "李四", "王五"};
-        String[] addressStrings = new String[]{"上海", "北京", "成都"};
-
-        // 结果集断言
-        int num = 1;
-        while(rs.next()) {
-            Assertions.assertEquals(rs.getInt("student_id"), num);
-            Assertions.assertEquals(rs.getString("student_name"), nameStrings[num-1]);
-            Assertions.assertEquals(rs.getString("student_address"), addressStrings[num-1]);
-            num++;
-        }
-    }
-
-    @AfterAll
-    static void close() throws SQLException {
-        if(rs!= null){
-            rs.close();
-        }
-
-        if(pst != null){
-            pst.close();
-        }
-
-        if(st != null){
-            st.close();
-        }
-
-        if(conn != null){
-            conn.close();
-        }
-    }
-}

test/src/test/java/com/fanruan/AbstractDriverTest.java

@@ -0,0 +1,58 @@
+package com.fanruan;
+
+/**
+ * @author Yichen Dai
+ * @date 2022/8/23 15:49
+ */
+
+import com.fanruan.cache.ClientCache;
+import com.fanruan.proxy.ProxyFactory;
+import com.fanruan.service.jdbc.driver.ServiceDriver;
+import com.fanruan.utils.DBProperties;
+
+import java.sql.*;
+import java.util.Properties;
+
+/** Base test class with common constants, data structures and methods */
+public class AbstractDriverTest {
+    static final Properties info = new Properties();
+
+    static final String[][] dbNameAndDriver = new String[][]{
+            DBProperties.HSQL
+    };
+
+    static final ServerStater server = new ServerStater(dbNameAndDriver);
+    static final AgentStarter agent =  new AgentStarter(dbNameAndDriver);
+
+
+    static {
+        info.setProperty("user", "sa");
+        info.setProperty("password", "");
+        info.setProperty("agentID", "1001");
+        info.setProperty("agentDBName", DBProperties.HSQL[0]);
+    }
+
+    static void openSocket(){
+        while(ClientCache.getClient(
+                info.getProperty("agentID"),
+                info.getProperty("agentDBName"))
+                == null){
+        }
+    }
+
+    void shutDown(){
+        agent.shutDown();
+        server.shutDown();
+    }
+
+    /**
+     * Gets a connection
+     * @return Connection a database connection
+     * @throws SQLException raised if any error occurs
+     */
+    public static Connection getConnection() throws SQLException {
+        Driver driver = (ServiceDriver) ProxyFactory.getProxy(ServiceDriver.class, null);
+        Connection conn = driver.connect("jdbc:hsqldb:mem:test;sql.syntax_mys=true", info);
+        return conn;
+    }
+}

test/src/test/java/com/fanruan/BaseJDBCTest.java

@@ -0,0 +1,432 @@
+package com.fanruan;
+
+import com.fanruan.annotation.RemoteClass;
+import com.fanruan.pojo.message.RpcRequest;
+import com.fanruan.service.jdbc.AbstractBind;
+import com.fanruan.utils.Commons;
+
+import javax.xml.transform.Result;
+import javax.xml.transform.Source;
+import java.io.*;
+import java.sql.*;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * @author Yichen Dai
+ * @date 2022/8/23 15:47
+ */
+
+
+public class BaseJDBCTest extends AbstractDriverTest{
+    final String dbName = "hsql";
+    final Map<String, RpcRequest> map = new HashMap(1);
+
+    int getSizeOfResultSet(ResultSet rs) throws SQLException {
+        int count = 0;
+        while (rs.next()) {
+            count++;
+        }
+        return count;
+    }
+
+    List<String> getInfoBySQL(String sqlCmd) throws SQLException {
+        Connection con = getConnection();
+        Statement st = con.createStatement();
+        List<String> result = new ArrayList<>();
+        ResultSet rs = st.executeQuery(sqlCmd);
+        while (rs.next()) {
+            result.add(rs.getString(1));
+        }
+        return result;
+    }
+
+    public RpcRequest createRequest(AbstractBind bind, String methodName, Object[] args, Class<?>[] argTypes) {
+        RpcRequest request = new RpcRequest();
+
+        request.setID(Commons.getID())
+                .setIDToInvoke(bind.getID())
+                .setMethodName(methodName)
+                .setArgs(args)
+                .setArgTypes(argTypes);
+
+        Class clazz = bind.getClass();
+
+        if(clazz.isAnnotationPresent(RemoteClass.class)){
+            RemoteClass annotation = (RemoteClass) clazz.getAnnotation(RemoteClass.class);
+            request.setServiceClassName(annotation.remoteClassName());
+        }else{
+            request.setServiceClassName(clazz.getName());
+        }
+        return request;
+    }
+
+    public boolean isEqualRequest(RpcRequest r1, RpcRequest r2){
+        String[] s1 = new String[]{
+                r1.getID(),
+                r1.getIDToInvoke(),
+                r1.getMethodName(),
+                r1.getServiceClassName()
+        };
+
+        String[] s2 = new String[]{
+                r2.getID(),
+                r2.getIDToInvoke(),
+                r2.getMethodName(),
+                r2.getServiceClassName()
+        };
+
+        if(isNotEqualStringArray(s1, s2)){
+            return false;
+        }
+
+        Object[] o1 = r1.getArgs();
+        Object[] o2 = r2.getArgs();
+        int o1_len = o1.length;
+        int o2_len = o2.length;
+        String[] o1_sa = new String[o1_len];
+        String[] o2_sa = new String[o2_len];
+
+        for(int i=0; i<o1_len; i++){
+            o1_sa[i] = o1[i].getClass().getName();
+            o2_sa[i] = o2[i].getClass().getName();
+        }
+
+        if(isNotEqualStringArray(o1_sa, o2_sa)){
+            return false;
+        }
+
+        Class<?>[] c1 = r1.getArgTypes();
+        Class<?>[] c2 = r2.getArgTypes();
+        int c1_len = c1.length;
+        int c2_len = c2.length;
+        String[] c1_sa = new String[c1_len];
+        String[] c2_sa = new String[c2_len];
+
+        for(int i=0; i<o1_len; i++){
+            c1_sa[i] = c1[i].getName();
+            c2_sa[i] = c2[i].getName();
+        }
+
+        if(isNotEqualStringArray(c1_sa, c2_sa)){
+            return false;
+        }
+
+        return true;
+    }
+
+    public boolean isNotEqualStringArray(String[] s1, String[] s2){
+        if(s1.length != s2.length){
+            return true;
+        }
+
+        for(int i=0; i<s1.length; i++){
+            if(s1[i] == null && s2[i] != null){
+                return true;
+            }else if(s1[i] != null && !s1[i].equals(s2[i])){
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+
+
+    public static void closeSQLObjects(Object...objects) throws SQLException {
+        for(Object obj : objects){
+            if(obj != null){
+                if(obj instanceof Connection){
+                    Connection conn = (Connection) obj;
+                    conn.close();
+                }else if(obj instanceof Statement){
+                    Statement statement = (Statement) obj;
+                    statement.close();
+                }else if(obj instanceof PreparedStatement){
+                    PreparedStatement preparedStatement = (PreparedStatement) obj;
+                    preparedStatement.close();
+                }else if(obj instanceof ResultSet){
+                    ResultSet resultSet = (ResultSet) obj;
+                    resultSet.close();
+                }else{
+                    throw new SQLException("Some arguments passed in are not closable.");
+                }
+            }
+        }
+    }
+}
+
+class FakeInputStream extends InputStream {
+    @Override
+    public int read() throws IOException {
+        return 0;
+    }
+}
+
+class FakeReader extends Reader {
+    @Override
+    public int read(char[] cbuf, int off, int len) throws IOException {
+        return 0;
+    }
+
+    @Override
+    public void close() throws IOException {}
+}
+
+class FakeSQLXML implements SQLXML {
+    @Override
+    public void free() throws SQLException {}
+
+    @Override
+    public InputStream getBinaryStream() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public OutputStream setBinaryStream() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public Reader getCharacterStream() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public Writer setCharacterStream() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public String getString() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public void setString(String value) throws SQLException {}
+
+    @Override
+    public <T extends Source> T getSource(Class<T> sourceClass) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public <T extends Result> T setResult(Class<T> resultClass) throws SQLException {
+        return null;
+    }
+}
+
+class FakeBlob implements Blob {
+    @Override
+    public long length() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public byte[] getBytes(long pos, int length) throws SQLException {
+        return new byte[0];
+    }
+
+    @Override
+    public InputStream getBinaryStream() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public long position(byte[] pattern, long start) throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public long position(Blob pattern, long start) throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int setBytes(long pos, byte[] bytes) throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int setBytes(long pos, byte[] bytes, int offset, int len) throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public OutputStream setBinaryStream(long pos) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public void truncate(long len) throws SQLException {}
+
+    @Override
+    public void free() throws SQLException {}
+
+    @Override
+    public InputStream getBinaryStream(long pos, long length) throws SQLException {
+        return null;
+    }
+}
+
+class FakeArray implements Array {
+    @Override
+    public String getBaseTypeName() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public int getBaseType() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public Object getArray() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public Object getArray(Map<String, Class<?>> map) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public Object getArray(long index, int count) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public Object getArray(long index, int count, Map<String, Class<?>> map) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getResultSet() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getResultSet(Map<String, Class<?>> map) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getResultSet(long index, int count) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getResultSet(long index, int count, Map<String, Class<?>> map)
+            throws SQLException {
+        return null;
+    }
+
+    @Override
+    public void free() throws SQLException {}
+}
+
+class FakeRowId implements RowId {
+    @Override
+    public byte[] getBytes() {
+        return new byte[0];
+    }
+}
+
+class FakeNClob implements NClob {
+    @Override
+    public long length() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public String getSubString(long pos, int length) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public Reader getCharacterStream() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public InputStream getAsciiStream() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public long position(String searchstr, long start) throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public long position(Clob searchstr, long start) throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int setString(long pos, String str) throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int setString(long pos, String str, int offset, int len) throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public OutputStream setAsciiStream(long pos) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public Writer setCharacterStream(long pos) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public void truncate(long len) throws SQLException {}
+
+    @Override
+    public void free() throws SQLException {}
+
+    @Override
+    public Reader getCharacterStream(long pos, long length) throws SQLException {
+        return null;
+    }
+}
+
+class FakeRef implements Ref {
+
+    @Override
+    public String getBaseTypeName() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public Object getObject(Map<String, Class<?>> map) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public Object getObject() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public void setObject(Object value) throws SQLException {}
+}
+
+class FakeSavepoint implements Savepoint{
+
+    @Override
+    public int getSavepointId() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public String getSavepointName() throws SQLException {
+        return null;
+    }
+}

test/src/test/java/com/fanruan/ConnectionTest.java

@@ -0,0 +1,314 @@
+package com.fanruan;
+
+import com.fanruan.cache.BeanCacheImpl;
+import com.fanruan.exception.NotImplementedException;
+import com.fanruan.handler.DispatcherImpl;
+import com.fanruan.pojo.message.RpcRequest;
+import com.fanruan.service.jdbc.connection.ServiceConnection;
+import org.junit.jupiter.api.*;
+
+import java.sql.*;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Properties;
+
+/**
+ * @author Yichen Dai
+ * @date 2022/8/30 10:23
+ */
+@TestInstance(TestInstance.Lifecycle.PER_CLASS)
+@TestMethodOrder(MethodOrderer.OrderAnnotation.class)
+public class ConnectionTest extends BaseJDBCTest{
+
+    Connection connection = null;
+    String IDtoInvoke = "";
+    BeanCacheImpl beanCache = null;
+    DispatcherImpl dispatcher = null;
+    ServiceConnection serviceConnection = null;
+
+    @BeforeAll
+    public void setUp() throws SQLException {
+        openSocket();
+        connection = getConnection();
+        ServiceConnection conn = (ServiceConnection) connection;
+        IDtoInvoke = conn.getID();
+        dispatcher = agent.dispatcherImpl;
+        beanCache = dispatcher.CACHE.getBeanCache(dbName);
+        serviceConnection = (ServiceConnection) ProxyFactoryIT.getProxy(ServiceConnection.class, map);
+    }
+
+    @Test
+    public void testSetCatalogSchema() throws Throwable{
+        String db = connection.getCatalog();
+        String schema = connection.getSchema();
+        connection.setCatalog(db);
+        connection.setSchema("PUBLIC");
+
+        // get the current schema
+        ResultSet rst = connection.createStatement().executeQuery("SELECT * " +
+                "FROM   INFORMATION_SCHEMA.TABLES");
+        Assertions.assertTrue(rst.next());
+        Assertions.assertEquals("PUBLIC", rst.getString(1));
+        Assertions.assertEquals(db, connection.getCatalog());
+        Assertions.assertEquals("PUBLIC", connection.getSchema());
+
+        // get the current schema
+        connection.setSchema(schema);
+        rst = connection.createStatement().executeQuery("SELECT * " +
+                "FROM   INFORMATION_SCHEMA.TABLES");
+        Assertions.assertTrue(rst.next());
+        Assertions.assertEquals(schema, rst.getString(1));
+        rst.close();
+    }
+
+    @Test
+    public void testConnection() throws Throwable {
+        Properties property = connection.getClientInfo();
+        Assertions.assertNull(property);
+        Properties clientInfo = new Properties();
+        clientInfo.setProperty("name", "Peter");
+        clientInfo.setProperty("description", "HSQLDB JDBC");
+
+        Assertions.assertThrows(SQLClientInfoException.class, () -> {
+            serviceConnection.setClientInfo("name", "peter");
+            RpcRequest request = map.get(null);
+            request.setIDToInvoke(IDtoInvoke);
+            dispatcher.invokeAsRequest(request, beanCache);
+        });
+
+        Assertions.assertThrows(SQLClientInfoException.class, () -> {
+            serviceConnection.setClientInfo(clientInfo);
+            RpcRequest request = map.get(null);
+            request.setIDToInvoke(IDtoInvoke);
+            dispatcher.invokeAsRequest(request, beanCache);
+        });
+    }
+
+    @Test
+    public void testNetworkTimeout() throws SQLException {
+        int millis = connection.getNetworkTimeout();
+        Assertions.assertEquals(0, millis);
+        Assertions.assertThrows(SQLFeatureNotSupportedException.class, () -> {
+            serviceConnection.setNetworkTimeout(null, 200);
+            RpcRequest request = map.get(null);
+            request.setIDToInvoke(IDtoInvoke);
+            dispatcher.invokeAsRequest(request, beanCache);
+        });
+    }
+
+    @Test
+    public void testAbort() throws SQLException {
+        Assertions.assertThrows(SQLException.class, () -> {
+            serviceConnection.abort(null);
+            RpcRequest request = map.get(null);
+            request.setIDToInvoke(IDtoInvoke);
+            dispatcher.invokeAsRequest(request, beanCache);
+        });
+    }
+
+    @Test
+    public void testClose() throws SQLException {
+        Connection conn = getConnection();
+        Assertions.assertFalse(conn.isClosed());
+        conn.close();
+        Assertions.assertTrue(conn.isClosed());
+    }
+
+    @Test
+    public void testHoldability() throws Throwable {
+        connection.setHoldability(ResultSet.CLOSE_CURSORS_AT_COMMIT);
+        Assertions.assertEquals(ResultSet.CLOSE_CURSORS_AT_COMMIT, connection.getHoldability());
+    }
+
+    @Test
+    public void testIsValid() throws Throwable {
+        Assertions.assertTrue(connection.isValid(10));
+    }
+
+    @Test
+    public void testUnwrapper() throws SQLException {
+        boolean canUnwrap = connection.isWrapperFor(Connection.class);
+        Assertions.assertTrue(canUnwrap);
+        Assertions.assertThrows(NotImplementedException.class,
+                () -> connection.unwrap(null));
+    }
+
+    @Test
+    public void testNativeSQL() throws SQLException {
+        Assertions.assertEquals("select 1", connection.nativeSQL("select 1"));
+    }
+
+    @Test
+    public void testTypeMap() throws Throwable {
+        Assertions.assertEquals(Collections.emptyMap(), connection.getTypeMap());
+        Assertions.assertThrows(SQLException.class, () -> {
+            serviceConnection.setTypeMap(new HashMap<>());
+            RpcRequest request = map.get(null);
+            request.setIDToInvoke(IDtoInvoke);
+            dispatcher.invokeAsRequest(request, beanCache);
+        });
+    }
+
+    @Test
+    public void setReadOnly() throws SQLException {
+        Assertions.assertFalse(connection.isReadOnly());
+        connection.setReadOnly(true);
+        Assertions.assertTrue(connection.isReadOnly());
+    }
+
+    @Test
+    public void setTransactionIsolation() throws SQLException {
+        Connection conn = getConnection();
+        Assertions.assertEquals(Connection.TRANSACTION_READ_COMMITTED ,conn.getTransactionIsolation());
+        conn.setTransactionIsolation(Connection.TRANSACTION_SERIALIZABLE);
+        Assertions.assertEquals(Connection.TRANSACTION_SERIALIZABLE,  conn.getTransactionIsolation());
+        closeSQLObjects(conn);
+    }
+
+    @Test
+    public void testGetWarning() throws SQLException {
+        connection.clearWarnings();
+        Assertions.assertNull(connection.getWarnings());
+    }
+
+    @Test
+    public void testCreateStatement() throws SQLException {
+        Statement st1 = connection.createStatement(
+                ResultSet.TYPE_SCROLL_INSENSITIVE,
+                ResultSet.TYPE_FORWARD_ONLY);
+        Statement st2 = connection.createStatement(
+                ResultSet.TYPE_SCROLL_INSENSITIVE,
+                ResultSet.TYPE_FORWARD_ONLY,
+                ResultSet.CLOSE_CURSORS_AT_COMMIT
+                );
+
+        closeSQLObjects(st1, st2);
+    }
+
+    @Test
+    void testPrepareStatement() throws SQLException {
+        PreparedStatement pst1 = connection.prepareStatement(
+                "select 1",
+                ResultSet.TYPE_SCROLL_INSENSITIVE,
+                ResultSet.TYPE_FORWARD_ONLY
+        );
+
+        PreparedStatement pst2 = connection.prepareStatement(
+                "select 1",
+                ResultSet.TYPE_SCROLL_INSENSITIVE,
+                ResultSet.TYPE_FORWARD_ONLY,
+                ResultSet.CLOSE_CURSORS_AT_COMMIT
+        );
+
+        PreparedStatement pst3 = connection.prepareStatement(
+                "select 2",
+                Statement.NO_GENERATED_KEYS
+        );
+
+        PreparedStatement pst4 = connection.prepareStatement(
+                "select 2",
+                new int[]{0}
+        );
+
+        PreparedStatement pst5 = connection.prepareStatement(
+                "select 2",
+                new String[]{"column_name"}
+        );
+
+        closeSQLObjects(pst1, pst2, pst3, pst4, pst5);
+    }
+
+    @Test
+    void testCallableStatement() throws SQLException {
+        Statement statement = connection.createStatement();
+
+        statement.executeUpdate("CREATE TABLE city (id INTEGER, name varchar(20)); ");
+        statement.executeUpdate("INSERT INTO city VALUES (1, '成都'), (2, '上海'); ");
+
+        CallableStatement cst1 = connection.prepareCall(
+                "CREATE PROCEDURE get_city_name(" +
+                        "IN c_id INT, " +
+                        "OUT city_name varchar(20)) " +
+                        "READS SQL DATA " +
+                        "BEGIN ATOMIC " +
+                        "   SELECT city.name INTO city_name FROM city WHERE id = c_id; " +
+                        "END;",
+                ResultSet.TYPE_SCROLL_INSENSITIVE,
+                ResultSet.TYPE_FORWARD_ONLY
+        );
+
+        CallableStatement cst2 = connection.prepareCall(
+                "CREATE PROCEDURE get_city_name(" +
+                        "IN c_id INT, " +
+                        "OUT city_name varchar(20)) " +
+                        "READS SQL DATA " +
+                        "BEGIN ATOMIC " +
+                        "   SELECT city.name INTO city_name FROM city WHERE id = c_id; " +
+                        "END;",
+                ResultSet.TYPE_SCROLL_INSENSITIVE,
+                ResultSet.TYPE_FORWARD_ONLY,
+                ResultSet.CLOSE_CURSORS_AT_COMMIT
+        );
+
+        closeSQLObjects(cst1, cst2);
+    }
+
+    @Test
+    void testSavePoint() throws SQLException {
+        Assertions.assertThrows(SQLException.class, () -> {
+            serviceConnection.setSavepoint();
+            RpcRequest request = map.get(null);
+            request.setIDToInvoke(IDtoInvoke);
+            dispatcher.invokeAsRequest(request, beanCache);
+        });
+
+        Assertions.assertThrows(SQLException.class, () -> {
+            serviceConnection.setSavepoint("savePoint");
+            RpcRequest request = map.get(null);
+            request.setIDToInvoke(IDtoInvoke);
+            dispatcher.invokeAsRequest(request, beanCache);
+        });
+
+        Assertions.assertThrows(SQLException.class, () -> {
+            serviceConnection.rollback(new FakeSavepoint());
+            RpcRequest request = map.get(null);
+            request.setIDToInvoke(IDtoInvoke);
+            dispatcher.invokeAsRequest(request, beanCache);
+        });
+
+        Assertions.assertThrows(SQLException.class, () -> {
+            serviceConnection.releaseSavepoint(new FakeSavepoint());
+            RpcRequest request = map.get(null);
+            request.setIDToInvoke(IDtoInvoke);
+            dispatcher.invokeAsRequest(request, beanCache);
+        });
+    }
+
+    @Test
+    void testCreateArrayOf() throws SQLException {
+        Array array = connection.createArrayOf("DOUBLE", new Double[]{0.1, 0.2});
+    }
+
+    @Test
+    void testCreateStruct() throws SQLException{
+        Assertions.assertThrows(SQLException.class, () -> {
+            serviceConnection.createStruct( "java.lang.String", new String[]{"hello"});
+            RpcRequest request = map.get(null);
+            request.setIDToInvoke(IDtoInvoke);
+            dispatcher.invokeAsRequest(request, beanCache);
+        });
+    }
+
+    @Test
+    void testAutoCommit() throws SQLException {
+        Connection conn = getConnection();
+        Assertions.assertTrue(conn.getAutoCommit());
+        conn.setAutoCommit(false);
+        Assertions.assertFalse(conn.getAutoCommit());
+    }
+
+    @Test
+    void testGetMetaData() throws SQLException {
+        DatabaseMetaData metaData = connection.getMetaData();
+    }
+}

test/src/test/java/com/fanruan/DatabaseMetaDataTest.java

@@ -0,0 +1,21 @@
+package com.fanruan;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import java.sql.Connection;
+import java.sql.DatabaseMetaData;
+import java.sql.SQLException;
+
+/**
+ * @author Yichen Dai
+ * @date 2022/8/31 18:18
+ */
+public class DatabaseMetaDataTest extends BaseJDBCTest{
+    @Test
+    public void testGetConnection() throws SQLException {
+        Connection conn = getConnection();
+        DatabaseMetaData metaData = conn.getMetaData();
+        Assertions.assertEquals(conn, metaData.getConnection());
+    }
+}

test/src/test/java/com/fanruan/InterceptorIT.java

@@ -0,0 +1,38 @@
+package com.fanruan;
+
+import com.fanruan.pojo.message.RpcRequest;
+import com.fanruan.proxy.interceptor.InterceptorUtils;
+import net.sf.cglib.proxy.MethodInterceptor;
+import net.sf.cglib.proxy.MethodProxy;
+
+import java.lang.reflect.Method;
+import java.util.Map;
+import java.util.Properties;
+
+/**
+ * @author Yichen Dai
+ * @date 2022/8/29 11:11
+ */
+public class InterceptorIT implements MethodInterceptor {
+    Class<?> clazz;
+    Map<String, RpcRequest> map;
+
+
+    InterceptorIT(Class<?> clazz, Map<String, RpcRequest> map){
+        this.clazz = clazz;
+        this.map = map;
+    }
+
+    @Override
+    public Object intercept(Object o, Method method, Object[] objects, MethodProxy methodProxy) throws Throwable {
+        if(InterceptorUtils.isNotImplemented(method)
+                || InterceptorUtils.isLocalMethod(method)){
+            return methodProxy.invokeSuper(o, objects);
+        }
+
+        RpcRequest request = InterceptorUtils.generateRequest(clazz, o, method, objects);
+        map.put(null, request);
+
+        return methodProxy.invokeSuper(o, objects);
+    }
+}

test/src/test/java/com/fanruan/ProxyFactoryIT.java

@@ -0,0 +1,23 @@
+package com.fanruan;
+
+import com.fanruan.pojo.message.RpcRequest;
+import com.fanruan.proxy.interceptor.Interceptor;
+import net.sf.cglib.proxy.Enhancer;
+
+import java.util.Map;
+import java.util.Properties;
+
+/**
+ * @author Yichen Dai
+ * @date 2022/8/29 11:15
+ */
+public class ProxyFactoryIT {
+
+    public static Object getProxy(Class<?> clazz, Map<String, RpcRequest> map){
+        final Enhancer enhancer = new Enhancer();
+        enhancer.setClassLoader(clazz.getClassLoader());
+        enhancer.setSuperclass(clazz);
+        enhancer.setCallback(new InterceptorIT(clazz, map));
+        return enhancer.create();
+    }
+}

test/src/test/java/com/fanruan/TestUtil.java

@@ -0,0 +1,183 @@
+package com.fanruan;
+
+import org.junit.jupiter.api.*;
+
+import java.sql.*;
+
+
+/**
+ * @author Yichen Dai
+ * @date 2022/8/18 15:27
+ */
+
+@TestInstance(TestInstance.Lifecycle.PER_CLASS)
+@TestMethodOrder(MethodOrderer.OrderAnnotation.class)
+@DisplayName("jdbc操作")
+public class TestUtil extends BaseJDBCTest{
+
+    private Connection conn = null;
+    private Statement st = null;
+    private PreparedStatement pst = null;
+
+
+    @BeforeAll
+    void setup(){
+        openSocket();
+    }
+
+    @Test
+    @Order(1)
+    void testConnect() throws SQLException {
+        conn = getConnection();
+    }
+
+    @Test
+    @Order(2)
+    void testCreateTable1() throws SQLException {
+        // 创建 statement
+        st = conn.createStatement();
+
+        // 创建表
+        int num = st.executeUpdate("DROP TABLE student IF EXISTS;");
+
+        Assertions.assertEquals(0, num);
+
+
+        num = st.executeUpdate("CREATE TABLE student (" +
+                "student_id INTEGER GENERATED BY DEFAULT AS IDENTITY " +
+                "(START WITH 1, INCREMENT BY 1) NOT NULL," +
+                "student_name VARCHAR(100) NOT NULL," +
+                "student_address VARCHAR(100) NOT NULL," +
+                "PRIMARY KEY (student_id)" +
+                ");");
+
+        Assertions.assertEquals(0, num);
+    }
+
+    @Test
+    @Order(3)
+    void testCreateTable2() throws SQLException {
+        // 创建表
+        int num = st.executeUpdate("DROP TABLE student_score IF EXISTS;");
+
+        Assertions.assertEquals(0, num);
+
+
+        num = st.executeUpdate("CREATE TABLE score (" +
+                "student_id int(10) PRIMARY KEY NOT NULL," +
+                "score int(10) NOT NULL" +
+                ");"
+        );
+
+        Assertions.assertEquals(0, num);
+    }
+
+    @Test
+    @Order(4)
+    void testInsert1() throws SQLException {
+        // 插入数据
+        int num = st.executeUpdate("INSERT INTO student VALUES" +
+                "(1, '张三', '上海')," +
+                "(2, '李四', '北京')," +
+                "(3, '王五', '成都');");
+
+        Assertions.assertEquals(3, num);
+    }
+
+    @Test
+    @Order(5)
+    void testInsert2() throws SQLException {
+        // 插入数据
+        int num = st.executeUpdate("INSERT INTO score VALUES" +
+                "(1, 645)," +
+                "(2, 627)," +
+                "(3, 591);");
+
+        Assertions.assertEquals(3, num);
+    }
+
+    @Test
+    @Order(6)
+    void testUpdate() throws SQLException {
+        // 预查询语句 删除指定 ID
+        pst = conn.prepareStatement("UPDATE student" +
+                " SET student_name = '李华', student_address = '杭州'"+
+                "WHERE student_id = ?");
+
+        Assertions.assertNotNull(pst);
+
+        pst.setInt(1, 1);
+
+        int num = pst.executeUpdate();
+
+        Assertions.assertEquals(1, num);
+    }
+
+    @Test
+    @Order(7)
+    void testDelete() throws SQLException {
+        // 预查询语句 删除指定 ID
+        pst = conn.prepareStatement("delete from student where student_id = ?");
+
+        Assertions.assertNotNull(pst);
+
+        pst.setInt(1, 3);
+
+        int num = pst.executeUpdate();
+
+        Assertions.assertEquals(1, num);
+    }
+
+    @Test
+    @Order(8)
+    void testSelect() throws SQLException {
+        ResultSet rs = st.executeQuery("select * from student;");
+        Assertions.assertEquals(2, getSizeOfResultSet(rs));
+        closeSQLObjects(rs);
+    }
+
+    @Test
+    @Order(9)
+    void testSubSelect() throws SQLException {
+        // 插入数据
+        ResultSet rs = st.executeQuery(
+                "SELECT student_name FROM student " +
+                "WHERE student_id IN " +
+                "(SELECT student_id " +
+                "FROM score " +
+                "WHERE score > 600);"
+        );
+        Assertions.assertEquals(2, getSizeOfResultSet(rs));
+        closeSQLObjects(rs);
+    }
+
+    @Test
+    @Order(10)
+    void testJoin() throws SQLException {
+        // 插入数据
+        ResultSet rs = st.executeQuery(
+                "SELECT A.student_name " +
+                        "FROM student A JOIN score B " +
+                        "ON A.student_id = B.student_id " +
+                        "WHERE score > 600;"
+        );
+
+        Assertions.assertEquals(2, getSizeOfResultSet(rs));
+        closeSQLObjects(rs);
+    }
+
+    @Test
+    @Order(10)
+    void testErrorQuery() throws SQLException {
+        // 插入数据
+        ResultSet rs = st.executeQuery("SELECT * FROM TEACHER;");
+        Assertions.assertFalse(rs.next());
+        closeSQLObjects(rs);
+    }
+
+    @AfterAll
+    void closeObject() throws SQLException {
+        closeSQLObjects(conn, st, pst);
+    }
+}
+