SpringInstanceStoreFactory.java

/*
  GRANITE DATA SERVICES
  Copyright (C) 2012 GRANITE DATA SERVICES S.A.S.

  This file is part of Granite Data Services.

  Granite Data Services is free software; you can redistribute it and/or modify
  it under the terms of the GNU Library General Public License as published by
  the Free Software Foundation; either version 2 of the License, or (at your
  option) any later version.

  Granite Data Services is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
  for more details.

  You should have received a copy of the GNU Library General Public License
  along with this library; if not, see <http://www.gnu.org/licenses/>.
*/

package org.granite.client.tide.spring;

import java.lang.annotation.Annotation;
import java.lang.reflect.Array;
import java.util.Arrays;
import java.util.List;
import java.util.Map;

import org.granite.client.tide.Context;
import org.granite.client.tide.InstanceStore;
import org.granite.client.tide.InstanceStoreFactory;
import org.springframework.context.ApplicationContext;

/**
 * @author William DRAI
 */
public class SpringInstanceStoreFactory implements InstanceStoreFactory {
	
	private final ApplicationContext applicationContext;
	
	public SpringInstanceStoreFactory(ApplicationContext applicationContext) {
		this.applicationContext = applicationContext;
	}

	@Override
	public InstanceStore createStore(Context context) {
		return new SpringInstanceStore(context, applicationContext);
	}

	
	public static class SpringInstanceStore implements InstanceStore {
		
		@SuppressWarnings("unused")
		private final Context context;
		private final ApplicationContext applicationContext;
		
		public SpringInstanceStore(Context context, ApplicationContext applicationContext) {
			this.context = context;
			this.applicationContext = applicationContext;
		}
	    
		@SuppressWarnings("unchecked")
		@Override
		public <T> T getNoProxy(String name) {
			return (T)applicationContext.getBean(name);
		}

		@Override
		public <T> T set(String name, T instance) {
			// Nothing, managed by Spring
			return instance;
		}

		@Override
		public <T> T set(T instance) {
			// Nothing, managed by Spring
			return instance;
		}

		@Override
		public void remove(String name) {
			// Nothing, managed by Spring
		}
		
		@Override
		public void clear() {
			// Nothing, managed by Spring
		}

		@Override
		public List<String> allNames() {
			return Arrays.asList(applicationContext.getBeanDefinitionNames());
		}

		@SuppressWarnings("unchecked")
		@Override
		public <T> T byName(String name, Context context) {
			return (T)applicationContext.getBean(name);
		}

		@Override
		public <T> T byType(Class<T> type, Context context) {
			return applicationContext.getBean(type);
		}
		
		@SuppressWarnings("unchecked")
		@Override
		public <T> T[] allByType(Class<T> type, Context context, boolean create) {
			Map<String, T> instancesMap = applicationContext.getBeansOfType(type, true, create);
			T[] all = (T[])Array.newInstance(type, instancesMap.size());
			return instancesMap.values().toArray(all);
		}
		
		@Override
		public Map<String, Object> allByAnnotatedWith(Class<? extends Annotation> annotationClass, Context context) {
			return applicationContext.getBeansWithAnnotation(annotationClass);
		}
	}
}