/*
* Copyright 2011 <a href="mailto:lincolnbaxter@gmail.com">Lincoln Baxter, III</a>
*
* 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 org.ocpsoft.rewrite.spring;
import java.util.Collection;
import java.util.LinkedHashSet;
import java.util.Map;
import java.util.Set;
import org.ocpsoft.common.spi.ServiceLocator;
import org.springframework.web.context.ContextLoader;
import org.springframework.web.context.WebApplicationContext;
/**
* {@link ServiceLocator} implementation for Spring.
*
* @author Christian Kaltepoth
*/
public class SpringServiceLocator implements ServiceLocator
{
@Override
@SuppressWarnings("unchecked")
public <T> Collection<Class<T>> locate(Class<T> clazz)
{
Set<Class<T>> result = new LinkedHashSet<Class<T>>();
// use the Spring API to obtain the WebApplicationContext
WebApplicationContext context = ContextLoader.getCurrentWebApplicationContext();
// may be null if Spring hasn't started yet
if (context != null) {
// ask spring about SPI implementations
Map<String, T> beans = context.getBeansOfType(clazz);
// add the implementations Class objects to the result set
for (T type : beans.values()) {
result.add((Class<T>) type.getClass());
}
}
return result;
}
}