// $Id: InsertSelect.java 7057 2005-06-07 20:06:10Z steveebersole $
package org.hibernate.sql;
import org.hibernate.dialect.Dialect;
import org.hibernate.HibernateException;
import java.util.List;
import java.util.ArrayList;
import java.util.Iterator;
/**
* Implementation of InsertSelect.
*
* @author Steve Ebersole
*/
public class InsertSelect {
private Dialect dialect;
private String tableName;
private String comment;
private List columnNames = new ArrayList();
private Select select;
public InsertSelect(Dialect dialect) {
this.dialect = dialect;
}
public InsertSelect setTableName(String tableName) {
this.tableName = tableName;
return this;
}
public InsertSelect setComment(String comment) {
this.comment = comment;
return this;
}
public InsertSelect addColumn(String columnName) {
columnNames.add( columnName );
return this;
}
public InsertSelect addColumns(String[] columnNames) {
for ( int i = 0; i < columnNames.length; i++ ) {
this.columnNames.add( columnNames[i] );
}
return this;
}
public InsertSelect setSelect(Select select) {
this.select = select;
return this;
}
public String toStatementString() {
if ( tableName == null ) throw new HibernateException( "no table name defined for insert-select" );
if ( select == null ) throw new HibernateException( "no select defined for insert-select" );
StringBuffer buf = new StringBuffer( (columnNames.size() * 15) + tableName.length() + 10 );
if ( comment!=null ) {
buf.append( "/* " ).append( comment ).append( " */ " );
}
buf.append( "insert into " ).append( tableName );
if ( !columnNames.isEmpty() ) {
buf.append( " (" );
Iterator itr = columnNames.iterator();
while ( itr.hasNext() ) {
buf.append( itr.next() );
if ( itr.hasNext() ) {
buf.append( ", " );
}
}
buf.append( ")" );
}
buf.append( ' ' ).append( select.toStatementString() );
return buf.toString();
}
}
|