001 /**
002 *
003 * Licensed to the Apache Software Foundation (ASF) under one or more
004 * contributor license agreements. See the NOTICE file distributed with
005 * this work for additional information regarding copyright ownership.
006 * The ASF licenses this file to You under the Apache License, Version 2.0
007 * (the "License"); you may not use this file except in compliance with
008 * the License. You may obtain a copy of the License at
009 *
010 * http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018 package org.apache.camel.impl;
019
020 import org.apache.camel.Predicate;
021 import org.apache.camel.Exchange;
022
023 /**
024 * A useful base class for {@link Predicate} implementations
025 *
026 * @version $Revision: 1.1 $
027 */
028 public abstract class PredicateSupport<E extends Exchange> implements Predicate<E> {
029
030 public void assertMatches(String text, E exchange) {
031 if (! matches(exchange)) {
032 throw new AssertionError(assertionFailureMessage(exchange));
033 }
034 }
035
036 protected String assertionFailureMessage(E exchange) {
037 return this + " failed on " + exchange;
038 }
039 }