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
021 /**
022 * A helper class for developers wishing to implement an {@link org.apache.camel.Expression}
023 * using Java code with a minimum amount of code to write so that the developer only needs
024 * to implement one of the {@link #evaluate(Exchange)} or
025 * {@link #evaluate(org.apache.camel.Exchange, Class)} methods.
026 *
027 * @version $Revision: 751221 $
028 */
029 public abstract class ExpressionAdapter extends ExpressionSupport {
030
031 protected String assertionFailureMessage(Exchange exchange) {
032 return toString();
033 }
034
035 public Object evaluate(Exchange exchange) {
036 return evaluate(exchange, Object.class);
037 }
038 }