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/*
* 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.tuscany.sca.implementation.script;
import java.lang.reflect.InvocationTargetException;
import javax.script.Invocable;
import javax.script.ScriptException;
import org.apache.tuscany.sca.invocation.Invoker;
import org.apache.tuscany.sca.invocation.Message;
/**
* Perform the actual script invocation
*/
public class ScriptInvoker implements Invoker {
protected ScriptImplementationProvider provider;
protected String operationName;
/**
* TODO: passing in the impl is a bit of a hack to get at scriptEngine as thats all this uses
* but its not created till the start method which is called after the invokers are created
*/
public ScriptInvoker(ScriptImplementationProvider provider, String operationName) {
this.provider = provider;
this.operationName = operationName;
}
private Object doInvoke(Object[] objects) throws InvocationTargetException {
try {
return ((Invocable)provider.scriptEngine).invokeFunction(operationName, objects);
} catch (ScriptException e) {
throw new InvocationTargetException(e);
}
}
public Message invoke(Message msg) {
try {
Object resp = doInvoke((Object[])msg.getBody());
msg.setBody(resp);
} catch (InvocationTargetException e) {
msg.setFaultBody(e.getCause());
}
return msg;
}
}
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