Java tutorial
/******************************************************************************* * Stefan Meyer, 2012 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.atemsource.atem.impl.infrastructure; import java.util.Collection; import org.springframework.context.ApplicationContext; import org.springframework.context.ApplicationContextAware; import org.springframework.stereotype.Service; @Service @Deprecated public class BeanCreator implements ApplicationContextAware { private ApplicationContext applicationContext; private static BeanCreator INSTANCE; public BeanCreator() { super(); INSTANCE = this; } public static BeanCreator getInstance() { // TODO Auto-generated method stub return INSTANCE; } public <T> T create(final Class<T> clazz) { String[] beansOfType = applicationContext.getBeanNamesForType(clazz); if (beansOfType.length == 1) { return (T) applicationContext.getBean(beansOfType[0]); } else { for (String name : beansOfType) { if (name.equalsIgnoreCase(clazz.getSimpleName())) { return (T) applicationContext.getBean(name); } } throw new IllegalArgumentException( "there are " + beansOfType.length + " bean definitions for class " + clazz.getSimpleName()); } } public Object create(String beanName) { return applicationContext.getBean(beanName); } public String getBeanName(Class<?> class1) { String[] beanNamesForType = applicationContext.getBeanNamesForType(class1); return beanNamesForType[0]; } public <T> Collection<T> getBeans(Class<T> class1) { return applicationContext.getBeansOfType(class1).values(); } @Override public void setApplicationContext(final ApplicationContext applicationContext) { this.applicationContext = applicationContext; } }