org.hibernate.criterion.PropertiesSubqueryExpression 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.criterion;
import org.hibernate.Criteria;
import org.hibernate.internal.util.StringHelper;
/**
* A comparison between several properties value in the outer query and the result of a multicolumn subquery.
*
* @author Lukasz Antoniak (lukasz dot antoniak at gmail dot com)
*/
public class PropertiesSubqueryExpression extends SubqueryExpression {
private final String[] propertyNames;
protected PropertiesSubqueryExpression(String[] propertyNames, String op, DetachedCriteria dc) {
super( op, null, dc );
this.propertyNames = propertyNames;
}
@Override
protected String toLeftSqlString(Criteria criteria, CriteriaQuery outerQuery) {
final StringBuilder left = new StringBuilder( "(" );
final String[] sqlColumnNames = new String[propertyNames.length];
for ( int i = 0; i < sqlColumnNames.length; ++i ) {
sqlColumnNames[i] = outerQuery.getColumn( criteria, propertyNames[i] );
}
left.append( StringHelper.join( ", ", sqlColumnNames ) );
return left.append( ")" ).toString();
}
}