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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.container.jsr223;
import java.util.List;
import java.util.Map;
import javax.script.Invocable;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
import org.apache.tuscany.container.easy.EasyInstanceFactory;
import org.apache.tuscany.spi.ObjectCreationException;
/**
* ScriptInstanceFactory creates ScriptInstances for a script
*/
public class ScriptInstanceFactory extends EasyInstanceFactory<ScriptInstance>{
private String className;
private String scriptSource;
public ScriptInstanceFactory(String resourceName, String className, String scriptSource, ClassLoader classLoader) {
super(resourceName, classLoader);
this.className = className;
this.scriptSource = scriptSource;
}
/**
* Create a new invokeable instance of the script
*
* @param context
* objects to add to scope of the script instance
* @return a RhinoScriptInstance
*/
public ScriptInstance createInstance(List<Class> services, Map<String, Object> context) {
try {
ScriptEngineManager engineMgr = new ScriptEngineManager();
ScriptEngine engine = engineMgr.getEngineByExtension(getScriptExtension());
engine.eval(scriptSource);
return new ScriptInstance((Invocable) engine);
} catch (ScriptException e) {
throw new ObjectCreationException(e);
}
}
protected String getScriptExtension() {
int lastDot = resourceName.lastIndexOf('.');
if (lastDot == -1) {
return null;
}
return resourceName.substring(lastDot+1);
}
}
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