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Guice support for Sherpa.

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package com.khs.guice.factory;

/*
 * Copyright 2012 the original author or authors.
 *
 * 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.
 */

import com.google.inject.Injector;
import com.khs.sherpa.exception.SherpaRuntimeException;
import com.khs.sherpa.util.Util;

abstract class ManagedBean {

	private Injector injector;
	private Class type;
	private String name;

	public abstract boolean isSingleton();
	public abstract boolean isPrototype();
	public abstract Object getInstance();
	
	public ManagedBean(Class type) {
		this.type = type;
		this.name = Util.getObjectName(type);
	}
	
	public void setInjector(Injector injector) {
		this.injector = injector;
	}
	
	public Class getType() {
		return type;
	}
	
	public void setType(Class type) {
		this.type = type;
	}
	
	public String getName() {
		return name;
	}
	
	public void setName(String name) {
		this.name = name;
	}
	
	protected Object createInstance() {
		try {
			// this was the only way I could get the @Injector on the endpoints to be processed...by
			// having the Injector create the instance of the endpoint.
			return injector.getInstance(type);
		} catch (Exception e) {
			e.printStackTrace();
			throw new SherpaRuntimeException("Unable to create Managed Bean [" + type + "]", e);
		}
		
	}
}