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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.openejb.test;

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import javax.ejb.EJB;
import javax.ejb.EJBMetaData;
import javax.ejb.Handle;
import javax.ejb.HomeHandle;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;

import org.apache.xbean.finder.ClassFinder;

public abstract class TestClient extends NamedTestCase {
    
    protected InitialContext initialContext;
    protected EJBMetaData       ejbMetaData;
    protected HomeHandle        ejbHomeHandle;
    protected Handle            ejbHandle;
    protected Integer           ejbPrimaryKey;

    public TestClient(final String name){
        super(name);
    }
    
    /**
     * Sets up the fixture, for example, open a network connection.
     * This method is called before a test is executed.
     */
    protected abstract void setUp() throws Exception;
    
    protected Object cast(final Object object, final Class type) {
    	return PortableRemoteObject.narrow(object, type);
    }
    
    protected final void processFieldInjections() {
    	Object home = null;
    	ClassFinder finder = null;
    	List fieldList = null;
    	
    	finder = new ClassFinder(getClassPath());
    	fieldList = finder.findAnnotatedFields(EJB.class);
    	for(final Iterator fields = fieldList.iterator(); fields.hasNext();) {
    		final Field field = (Field) fields.next();
    		final EJB ejbAnnotation = field.getAnnotation(EJB.class);
    		if( (ejbAnnotation.name() != null) && (ejbAnnotation.name() != "") && (ejbAnnotation.beanInterface() != null)) {
    			try {
    				home = initialContext.lookup(ejbAnnotation.name());
    				// home = ejbAnnotation.beanInterface().cast(PortableRemoteObject.narrow(home, ejbAnnotation.beanInterface()));
    				home = cast(home, ejbAnnotation.beanInterface());
    				field.setAccessible(true);
    				field.set(this, home);
    			} catch(final Exception ex) {
    				// TODO - MNour : Needs better exception handling
    				ex.printStackTrace();
    			}
    		}
    	}
    }
    
    protected final void processSetterInjections() {
    	Object home = null;
    	ClassFinder finder = null;
    	List methodList = null;
    	
    	finder = new ClassFinder(getClassPath());
    	methodList = finder.findAnnotatedMethods(EJB.class);
    	for(final Iterator methods = methodList.iterator(); methods.hasNext();) {
    		final Method method = (Method) methods.next();
    		final EJB ejbAnnotation = method.getAnnotation(EJB.class);
    		if( (ejbAnnotation.name() != null) && (ejbAnnotation.name() != "") && (ejbAnnotation.beanInterface() != null)) {
    			try {
    				home = initialContext.lookup(ejbAnnotation.name());
    				// home = ejbAnnotation.beanInterface().cast(PortableRemoteObject.narrow(home, ejbAnnotation.beanInterface()));
    				home = cast(home, ejbAnnotation.beanInterface());
    				method.setAccessible(true);
    				method.invoke(this, new Object[] {home});
    			} catch(final Exception ex) {
    				// TODO - MNour : Needs better exception handling
    				ex.printStackTrace();
    			}
    		}
    	}
    }
    
    private List> getClassPath() {
    	Class superClass = null;
    	final List> classPath = new ArrayList>();
    	
    	classPath.add(getClass());
    	superClass = getClass().getSuperclass();
    	while(!superClass.equals(Object.class)) {
    		classPath.add(superClass);
    		superClass = superClass.getSuperclass();
    	}
    	return classPath;
    }
    
}