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Hibernate example source code file (LogicalExpression.java)

This example Hibernate source code file (LogicalExpression.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Hibernate tags/keywords

criteriaquery, criterion, criterion, hibernateexception, hibernateexception, logicalexpression, string, string, typedvalue, typedvalue

The Hibernate LogicalExpression.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2008, Red Hat Middleware LLC 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 Middleware LLC.
 *
 * 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.criterion;
import org.hibernate.Criteria;
import org.hibernate.HibernateException;
import org.hibernate.engine.spi.TypedValue;

/**
 * Superclass of binary logical expressions
 * @author Gavin King
 */
public class LogicalExpression implements Criterion {

	private final Criterion lhs;
	private final Criterion rhs;
	private final String op;

	protected LogicalExpression(Criterion lhs, Criterion rhs, String op) {
		this.lhs = lhs;
		this.rhs = rhs;
		this.op = op;
	}

	public TypedValue[] getTypedValues(Criteria criteria, CriteriaQuery criteriaQuery)
	throws HibernateException {

		TypedValue[] lhstv = lhs.getTypedValues(criteria, criteriaQuery);
		TypedValue[] rhstv = rhs.getTypedValues(criteria, criteriaQuery);
		TypedValue[] result = new TypedValue[ lhstv.length + rhstv.length ];
		System.arraycopy(lhstv, 0, result, 0, lhstv.length);
		System.arraycopy(rhstv, 0, result, lhstv.length, rhstv.length);
		return result;
	}

	public String toSqlString(Criteria criteria, CriteriaQuery criteriaQuery)
	throws HibernateException {

		return '(' +
			lhs.toSqlString(criteria, criteriaQuery) +
			' ' +
			getOp() +
			' ' +
			rhs.toSqlString(criteria, criteriaQuery) +
			')';
	}

	public String getOp() {
		return op;
	}

	public String toString() {
		return lhs.toString() + ' ' + getOp() + ' ' + rhs.toString();
	}
}

Other Hibernate examples (source code examples)

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