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package com.sun.enterprise.webservice;

import java.util.HashMap;
import java.lang.reflect.Method;

import com.sun.xml.ws.api.message.Packet;
import com.sun.xml.ws.api.server.Invoker;
import javax.xml.ws.WebServiceContext;
import javax.xml.ws.Provider;

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

/**
 * This extends InvokerImpl - the difference is this creates
 * a Map of methods from class to proxy class
 */
public class EjbInvokerImpl extends InvokerImpl {
    
    private final HashMap<Method,Method> methodMap = new HashMap<Method,Method>();

    public EjbInvokerImpl(Class endpointImpl, Invoker core, 
            Object inv, WebServiceContextImpl w) {
        super(core, inv, w);

        Class proxyClass = invokeObject.getClass();
        for(Method x : endpointImpl.getMethods()) {
            try {
                Method mappedMethod =
                    proxyClass.getMethod(x.getName(), x.getParameterTypes());
                methodMap.put(x, mappedMethod);
            } catch (NoSuchMethodException noex) {
                // We do not take any action because these may be excluded @WebMethods
                // or EJB business methods that are not @WebMethods etc
            }
        }
    }
    
    /**
     * Here is where we actually call the endpoint method
     */
    public Object invoke(Packet p, Method m, Object... args ) 
                                throws InvocationTargetException, IllegalAccessException {
        Method mappedMethod = methodMap.get(m);
        if(mappedMethod != null)
            return(super.invoke(p, mappedMethod,  args));
        throw new IllegalAccessException("Unable to find invocation method for "+m+". Map="+methodMap);
    }
}
