org.hibernate.dialect.pagination.CUBRIDLimitHandler 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
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*/
package org.hibernate.dialect.pagination;
import org.hibernate.dialect.Dialect;
import org.hibernate.engine.spi.RowSelection;
/**
* Limit handler for CUBRID
*
* @author Esen Sagynov (kadishmal at gmail dot com)
*/
public class CUBRIDLimitHandler extends AbstractLimitHandler {
@SuppressWarnings("FieldCanBeLocal")
private final Dialect dialect;
/**
* Constructs a CUBRIDLimitHandler
*
* @param dialect Currently not used
* @param sql The SQL
* @param selection The row selection options
*/
public CUBRIDLimitHandler(Dialect dialect, String sql, RowSelection selection) {
super( sql, selection );
this.dialect = dialect;
}
@Override
public boolean supportsLimit() {
return true;
}
@Override
public String getProcessedSql() {
if ( LimitHelper.useLimit( this, selection ) ) {
// useLimitOffset: whether "offset" is set or not;
// if set, use "LIMIT offset, row_count" syntax;
// if not, use "LIMIT row_count"
final boolean useLimitOffset = LimitHelper.hasFirstRow( selection );
return sql + (useLimitOffset ? " limit ?, ?" : " limit ?");
}
else {
// or return unaltered SQL
return sql;
}
}
}