| /** |
| * 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.language.groovy; |
| |
| import java.util.AbstractMap; |
| import java.util.Collections; |
| import java.util.Set; |
| |
| import groovy.lang.Binding; |
| import groovy.lang.Script; |
| |
| import org.apache.camel.Exchange; |
| import org.apache.camel.impl.ExpressionSupport; |
| import org.apache.camel.util.ExchangeHelper; |
| |
| /** |
| * @version |
| */ |
| public class GroovyExpression extends ExpressionSupport { |
| private Class<Script> scriptType; |
| private String text; |
| |
| public GroovyExpression(Class<Script> scriptType, String text) { |
| this.scriptType = scriptType; |
| this.text = text; |
| } |
| |
| @Override |
| public String toString() { |
| return "groovy: " + text; |
| } |
| |
| protected String assertionFailureMessage(Exchange exchange) { |
| return "groovy: " + text; |
| } |
| |
| public <T> T evaluate(Exchange exchange, Class<T> type) { |
| Script script = ExchangeHelper.newInstance(exchange, scriptType); |
| // lets configure the script |
| configure(exchange, script); |
| Object value = script.run(); |
| return exchange.getContext().getTypeConverter().convertTo(type, value); |
| } |
| |
| private void configure(Exchange exchange, Script script) { |
| final Binding binding = script.getBinding(); |
| ExchangeHelper.populateVariableMap(exchange, new AbstractMap<String, Object>() { |
| @Override |
| public Object put(String key, Object value) { |
| binding.setProperty(key, value); |
| return null; |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public Set entrySet() { |
| return Collections.EMPTY_SET; |
| } |
| }); |
| } |
| } |