| /** |
| * 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.impl; |
| |
| import org.apache.camel.Exchange; |
| |
| /** |
| * A helper class for developers wishing to implement an {@link org.apache.camel.Expression} |
| * using Java code with a minimum amount of code to write so that the developer only needs |
| * to implement one of the {@link #evaluate(org.apache.camel.Exchange, Class)} or |
| * {@link #evaluate(org.apache.camel.Exchange)} methods. |
| * |
| * @version |
| */ |
| public abstract class ExpressionAdapter extends ExpressionSupport { |
| |
| protected String assertionFailureMessage(Exchange exchange) { |
| return toString(); |
| } |
| |
| public <T> T evaluate(Exchange exchange, Class<T> type) { |
| Object value = evaluate(exchange); |
| return exchange.getContext().getTypeConverter().convertTo(type, value); |
| } |
| |
| } |