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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.python;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import org.apache.tuscany.spi.extension.TargetInvokerExtension;

/**
 * Dispatches to a PythonScript implementation instance
 * 
 * @version $$Rev$$ $$Date$$
 */
public class PythonInvoker extends TargetInvokerExtension {

    private PythonComponent context;

    private Method method;

    public PythonInvoker(Method method, PythonComponent context) {
        this.method = method;
        this.context = context;
    }

    /**
     * Invokes a function on a script instance
     */
    public Object invokeTarget(final Object payload) throws InvocationTargetException {
        Object target = context.getTargetInstance();
        try {
            return method.invoke(target, (Object[]) payload);
        } catch (Exception e) {
            throw new InvocationTargetException(e);
        }
    }

}