You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
127 lines
3.2 KiB
127 lines
3.2 KiB
/* |
|
* Hibernate, Relational Persistence for Idiomatic Java |
|
* |
|
* License: GNU Lesser General Public License (LGPL), version 2.1 or later. |
|
* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>. |
|
*/ |
|
package com.fr.third.org.hibernate.sql; |
|
import com.fr.third.org.hibernate.dialect.Dialect; |
|
|
|
import java.util.Iterator; |
|
import java.util.LinkedHashMap; |
|
import java.util.Map; |
|
|
|
/** |
|
* An SQL <tt>DELETE</tt> statement |
|
* |
|
* @author Gavin King |
|
*/ |
|
public class Delete { |
|
|
|
private String tableName; |
|
private String versionColumnName; |
|
private String where; |
|
|
|
private Map primaryKeyColumns = new LinkedHashMap(); |
|
|
|
private String comment; |
|
public Delete setComment(String comment) { |
|
this.comment = comment; |
|
return this; |
|
} |
|
|
|
public Delete setTableName(String tableName) { |
|
this.tableName = tableName; |
|
return this; |
|
} |
|
|
|
public String toStatementString() { |
|
StringBuilder buf = new StringBuilder( tableName.length() + 10 ); |
|
if ( comment!=null ) { |
|
buf.append( "/* " ).append(Dialect.escapeComment(comment)).append( " */ " ); |
|
} |
|
buf.append( "delete from " ).append(tableName); |
|
if ( where != null || !primaryKeyColumns.isEmpty() || versionColumnName != null ) { |
|
buf.append( " where " ); |
|
} |
|
boolean conditionsAppended = false; |
|
Iterator iter = primaryKeyColumns.entrySet().iterator(); |
|
while ( iter.hasNext() ) { |
|
Map.Entry e = (Map.Entry) iter.next(); |
|
buf.append( e.getKey() ).append( '=' ).append( e.getValue() ); |
|
if ( iter.hasNext() ) { |
|
buf.append( " and " ); |
|
} |
|
conditionsAppended = true; |
|
} |
|
if ( where!=null ) { |
|
if ( conditionsAppended ) { |
|
buf.append( " and " ); |
|
} |
|
buf.append( where ); |
|
conditionsAppended = true; |
|
} |
|
if ( versionColumnName!=null ) { |
|
if ( conditionsAppended ) { |
|
buf.append( " and " ); |
|
} |
|
buf.append( versionColumnName ).append( "=?" ); |
|
} |
|
return buf.toString(); |
|
} |
|
|
|
public Delete setWhere(String where) { |
|
this.where=where; |
|
return this; |
|
} |
|
|
|
public Delete addWhereFragment(String fragment) { |
|
if ( where == null ) { |
|
where = fragment; |
|
} |
|
else { |
|
where += ( " and " + fragment ); |
|
} |
|
return this; |
|
} |
|
|
|
public Delete setPrimaryKeyColumnNames(String[] columnNames) { |
|
this.primaryKeyColumns.clear(); |
|
addPrimaryKeyColumns(columnNames); |
|
return this; |
|
} |
|
|
|
public Delete addPrimaryKeyColumns(String[] columnNames) { |
|
for ( String columnName : columnNames ) { |
|
addPrimaryKeyColumn( columnName, "?" ); |
|
} |
|
return this; |
|
} |
|
|
|
public Delete addPrimaryKeyColumns(String[] columnNames, boolean[] includeColumns, String[] valueExpressions) { |
|
for ( int i=0; i<columnNames.length; i++ ) { |
|
if( includeColumns[i] ) { |
|
addPrimaryKeyColumn( columnNames[i], valueExpressions[i] ); |
|
} |
|
} |
|
return this; |
|
} |
|
|
|
public Delete addPrimaryKeyColumns(String[] columnNames, String[] valueExpressions) { |
|
for ( int i=0; i<columnNames.length; i++ ) { |
|
addPrimaryKeyColumn( columnNames[i], valueExpressions[i] ); |
|
} |
|
return this; |
|
} |
|
|
|
public Delete addPrimaryKeyColumn(String columnName, String valueExpression) { |
|
this.primaryKeyColumns.put(columnName, valueExpression); |
|
return this; |
|
} |
|
|
|
public Delete setVersionColumnName(String versionColumnName) { |
|
this.versionColumnName = versionColumnName; |
|
return this; |
|
} |
|
|
|
}
|
|
|