/*
 * Copyright Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags and
 * the COPYRIGHT.txt file distributed with this work.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * Modified by
 * @author  Data Virtuality GmbH
 * @date    $Date$
 *
 */
// https://issues.jboss.org/browse/TEIID-5045
package org.teiid.query.sql.lang;

import org.teiid.core.TeiidRuntimeException;
import org.teiid.core.util.EquivalenceUtil;
import org.teiid.query.QueryPlugin;
import org.teiid.query.sql.symbol.Expression;

public class ImmutableCompareCriteria extends CompareCriteria {

	public ImmutableCompareCriteria(Expression leftExpression, int operator, Expression rightExpression) {
		super.setLeftExpression(leftExpression);
		super.setOperator(operator);
		super.setRightExpression(rightExpression);
	}

	@Override
	public void setLeftExpression(Expression expression) {
		if (!EquivalenceUtil.areEqual(expression, getLeftExpression())) {
			throw new TeiidRuntimeException(QueryPlugin.Util.gs(QueryPlugin.Event.DVCORE301196));
		}
	}

	@Override
	public void setRightExpression(Expression expression) {
		if (!EquivalenceUtil.areEqual(expression, getRightExpression())) {
			throw new TeiidRuntimeException(QueryPlugin.Util.gs(QueryPlugin.Event.DVCORE301196));
		}
	}

	public void setOperator(int operator) {
		if (!EquivalenceUtil.areEqual(operator, getOperator())) {
			throw new TeiidRuntimeException(QueryPlugin.Util.gs(QueryPlugin.Event.DVCORE301196));
		}
	};

	@Override
	public void setOptional(Boolean isOptional) {

	}

}
