/**
* 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 $Revision: 640731 $
*/
public class GroovyExpression extends ExpressionSupport<Exchange> {
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 Object evaluate(Exchange exchange) {
Script script = ExchangeHelper.newInstance(exchange, scriptType);
// lets configure the script
configure(exchange, script);
return script.run();
}
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;
}
public Set entrySet() {
return Collections.EMPTY_SET;
}
});
}
}