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/*
 * Copyright 2008 Whohoo Licensed 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 com.googlecode.mycontainer.ejb.interceptor;

import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Field;
import java.lang.reflect.Method;

import javax.ejb.EJB;

import com.googlecode.mycontainer.kernel.naming.MyNameParser;
import com.googlecode.mycontainer.kernel.reflect.proxy.Request;

public class EJBInjectInterceptor extends ScannerInjectInterceptor {

	private static final long serialVersionUID = -5770731218040446831L;

	private String getAnnotationName(AccessibleObject member) {
		String name = null;
		EJB annotation = member.getAnnotation(EJB.class);
		if (annotation != null) {
			name = annotation.mappedName();
			if (name != null && name.length() == 0) {
				name = annotation.name();
			}
		}
		return name;
	}

	@Override
	public Object getInjectName(Request request, Field field) throws Throwable {
		String name = getAnnotationName(field);
		if (name != null && name.length() == 0) {
			Class type = field.getType();
			name = MyNameParser.parseClassName("ejb", type);
		}
		if (name == null) {
			return null;
		}
		return getContext().lookup(name);
	}

	@Override
	public Object getInjectName(Request request, Method method)
			throws Throwable {
		String name = getAnnotationName(method);
		if (name != null && name.length() == 0) {
			Class paramsType[] = method.getParameterTypes();
			if (paramsType.length == 1) {
				Class type = paramsType[0];
				name = MyNameParser.parseClassName("ejb", type);
			}
		}
		if (name == null) {
			return null;
		}
		return getContext().lookup(name);
	}

}