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.builder;
018
019 import org.apache.camel.Exchange;
020 import org.apache.camel.Predicate;
021
022 /**
023 * A useful base class for {@link Predicate} implementations
024 *
025 * @version $Revision: 663018 $
026 */
027 public abstract class PredicateSupport<E extends Exchange> implements Predicate<E> {
028
029 public void assertMatches(String text, E exchange) {
030 if (!matches(exchange)) {
031 throw new AssertionError(assertionFailureMessage(exchange) + " on " + exchange);
032 }
033 }
034
035 protected String assertionFailureMessage(E exchange) {
036 return toString();
037 }
038 }