Pull request #46: REPORT-50963 优化程序数据集上层设计(abstracttabledata)，提交新demo

Merge in PG/plugin-report-doc-demo from ~ZACK/plugin-report-doc-demo:release/10.0 to release/10.0

* commit '8ec9a4a4ee0b129b0223b216e3a48745e95767f7':
  补一下简单程序数据集demo
  REPORT-50963 优化程序数据集上层设计(abstracttabledata)，提交新demo

src/main/java/com/fr/data/SimpleArrayTableDataDemo.java

@@ -0,0 +1,29 @@
+package com.fr.data;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class SimpleArrayTableDataDemo extends SimpleTableData {
+
+    /**
+     * 初始化列头
+     * @return
+     */
+    @Override
+    public String[] initColumnNames() {
+        return new String[]{"Name", "Score"};
+    }
+
+    /**
+     * 加载行列数据
+     * @return
+     */
+    @Override
+    public List<Object[]> loadData() {
+        ArrayList<Object[]> valueList = new ArrayList();
+        valueList.add(new Object[]{"Alex", 15});
+        valueList.add(new Object[]{"Helly", 22});
+        valueList.add(new Object[]{"Bobby", 99});
+        return valueList;
+    }
+}

src/main/java/com/fr/data/SimpleParamTableDataDemo.java

@@ -0,0 +1,77 @@
+package com.fr.data;
+
+import com.fr.file.DatasourceManager;
+import com.fr.log.FineLoggerFactory;
+import com.fr.stable.ParameterProvider;
+
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.ResultSetMetaData;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * 带参数的程序数据集Demo 跟ParamTableDataDemo功能一样，但实现更简单
+ *
+ * @author fanruan
+ */
+public class SimpleParamTableDataDemo extends SimpleTableData {
+
+    @Override
+    public String[] initColumnNames() {
+        String[] columnNames = new String[10];
+        for (int i = 0; i < 10; i++) {
+            columnNames[i] = "column#" + i;
+        }
+        return columnNames;
+    }
+
+    @Override
+    public List<Object[]> loadData() {
+        // 保存得到的数据库表名
+        String tableName = ((ParameterProvider) (parameters.get().toArray())[0]).getValue().toString();
+
+        // 构造SQL语句,并打印出来
+        String sql = "select * from " + tableName;
+        FineLoggerFactory.getLogger().info("Query SQL of ParamTableDataDemo: \n" + sql);
+        // 保存得到的结果集
+        ArrayList<Object[]> valueList = new ArrayList();
+        // 下面开始建立数据库连接，按照刚才的SQL语句进行查询
+        com.fr.data.impl.Connection conn = DatasourceManager.getInstance().getConnection("FRDemo");
+        Connection con = null;
+        try {
+            con = conn.createConnection();
+            Statement stmt = con.createStatement();
+            ResultSet rs = stmt.executeQuery(sql);
+            // 获得记录的详细信息，然后获得总列数
+            ResultSetMetaData rsmd = rs.getMetaData();
+            int colNum = rsmd.getColumnCount();
+            // 用对象保存数据
+            Object[] objArray = null;
+            while (rs.next()) {
+                objArray = new Object[colNum];
+                for (int i = 0; i < colNum; i++) {
+                    objArray[i] = rs.getObject(i + 1);
+                }
+                // 在valueList中加入这一行数据
+                valueList.add(objArray);
+            }
+            // 释放数据库资源
+            rs.close();
+            stmt.close();
+        } catch (Exception e) {
+            FineLoggerFactory.getLogger().error(e.getMessage(), e);
+        } finally {
+            try {
+                if (con != null) {
+                    con.close();
+                }
+            } catch (SQLException e) {
+                FineLoggerFactory.getLogger().error(e.getMessage(), e);
+            }
+        }
+        return valueList;
+    }
+}