org.hibernate.dialect.pagination.NoopLimitHandler Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2013, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.dialect.pagination;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import org.hibernate.engine.spi.RowSelection;
/**
* Handler not supporting query LIMIT clause. JDBC API is used to set maximum number of returned rows.
*
* @author Lukasz Antoniak (lukasz dot antoniak at gmail dot com)
*/
public class NoopLimitHandler extends AbstractLimitHandler {
/**
* Constructs a NoopLimitHandler
*
* @param sql The SQL
* @param selection The row selection options
*/
public NoopLimitHandler(String sql, RowSelection selection) {
super( sql, selection );
}
@Override
public String getProcessedSql() {
return sql;
}
@Override
public int bindLimitParametersAtStartOfQuery(PreparedStatement statement, int index) {
return 0;
}
@Override
public int bindLimitParametersAtEndOfQuery(PreparedStatement statement, int index) {
return 0;
}
@Override
public void setMaxRows(PreparedStatement statement) throws SQLException {
if ( LimitHelper.hasMaxRows( selection ) ) {
statement.setMaxRows( selection.getMaxRows() + convertToFirstRowValue( LimitHelper.getFirstRow( selection ) ) );
}
}
}