| /** |
| * 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; |
| import org.apache.camel.Expression; |
| import org.apache.camel.Predicate; |
| import org.apache.camel.util.ObjectHelper; |
| |
| /** |
| * A useful base class for {@link Predicate} and {@link Expression} implementations |
| * |
| * @version |
| */ |
| public abstract class ExpressionSupport implements Expression, Predicate { |
| |
| public boolean matches(Exchange exchange) { |
| Object value = evaluate(exchange, Object.class); |
| return ObjectHelper.evaluateValuePredicate(value); |
| } |
| |
| public Object evaluate(Exchange exchange) { |
| return evaluate(exchange, Object.class); |
| } |
| |
| public void assertMatches(String text, Exchange exchange) { |
| if (!matches(exchange)) { |
| throw new AssertionError(text + " " + assertionFailureMessage(exchange) + " for exchange: " + exchange); |
| } |
| } |
| |
| protected abstract String assertionFailureMessage(Exchange exchange); |
| } |