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/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
package org.apache.camel;
/**
* A predicate which is evaluating a binary expression.
* <p/>
* The predicate has a left and right hand side expressions which
* is matched based on an operator.
* <p/>
* This predicate can return information about the evaluated expressions
* which allows you to get detailed information, so you better understand
* why the predicate did not match.
*
* @version $Revision$
*/
public interface BinaryPredicate extends Predicate {
/**
* Gets the operator
*
* @return the operator text
*/
String getOperator();
/**
* Gets the left hand side expression
*
* @return the left expression
*/
Expression getLeft();
/**
* Gets the right hand side expression
*
* @return the right expression
*/
Expression getRight();
/**
* Gets the evaluated left hand side value
*
* @return the left value, may be <tt>null</tt> if predicate has not been matched yet.
*/
Object getLeftValue();
/**
* Gets the evaluated right hand side value
*
* @return the right value, may be <tt>null</tt> if predicate has not been matched yet.
*/
Object getRightValue();
}