001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.camel.impl; 018 019 import org.apache.camel.Exchange; 020 import org.apache.camel.Expression; 021 import org.apache.camel.Predicate; 022 import static org.apache.camel.util.ObjectHelper.notNull; 023 024 /** 025 * A useful base class for {@link Predicate} implementations 026 * 027 * @deprecated is a duplicate of the same class in the builder package. Will be removed in Camel 2.0 028 * @version $Revision: 65236 $ 029 */ 030 public abstract class BinaryPredicateSupport<E extends Exchange> implements Predicate<E> { 031 032 private final Expression<E> left; 033 private final Expression<E> right; 034 035 protected BinaryPredicateSupport(Expression<E> left, Expression<E> right) { 036 notNull(left, "left"); 037 notNull(right, "right"); 038 039 this.left = left; 040 this.right = right; 041 } 042 043 @Override 044 public String toString() { 045 return left + " " + getOperationText() + " " + right; 046 } 047 048 public boolean matches(E exchange) { 049 Object leftValue = left.evaluate(exchange); 050 Object rightValue = right.evaluate(exchange); 051 return matches(exchange, leftValue, rightValue); 052 } 053 054 public void assertMatches(String text, E exchange) { 055 Object leftValue = left.evaluate(exchange); 056 Object rightValue = right.evaluate(exchange); 057 if (!matches(exchange, leftValue, rightValue)) { 058 throw new AssertionError(text + assertionFailureMessage(exchange, leftValue, rightValue)); 059 } 060 } 061 062 protected abstract boolean matches(E exchange, Object leftValue, Object rightValue); 063 064 protected abstract String getOperationText(); 065 066 protected String assertionFailureMessage(E exchange, Object leftValue, Object rightValue) { 067 return this + " failed on " + exchange + " with left value <" + leftValue + "> right value <" 068 + rightValue + ">"; 069 } 070 }