Java tutorial
package org.rosenvold.spring.convention; /* * Copyright 2011 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 org.rosenvold.spring.convention.beanclassresolvers.DefaultBeanClassResolver; import org.rosenvold.spring.convention.candidateevaluators.DefaultCandidateEvaluator; import org.springframework.beans.factory.support.BeanDefinitionReader; import org.springframework.beans.factory.support.DefaultListableBeanFactory; import org.springframework.beans.factory.xml.XmlBeanDefinitionReader; import org.springframework.context.ConfigurableApplicationContext; import org.springframework.context.annotation.AnnotationConfigUtils; import org.springframework.context.support.GenericApplicationContext; import org.springframework.test.context.support.AbstractContextLoader; /** * @author Kristian Rosenvold */ public class ConventionContextLoader extends AbstractContextLoader { public Class<? extends CandidateEvaluator> candidateEvaluator = DefaultCandidateEvaluator.class; public Class<? extends NameToClassResolver> nameToClassResolver = DefaultBeanClassResolver.class; @Override protected String getResourceSuffix() { return "-convention"; } protected String[] modifyLocations(Class<?> clazz, String... locations) { final ConventionConfiguration annotation = clazz.getAnnotation(ConventionConfiguration.class); if (annotation != null) { candidateEvaluator = annotation.candidateEvaluator(); nameToClassResolver = annotation.nameToClassResolver(); } return locations; } public final ConfigurableApplicationContext loadContext(String... locations) throws Exception { ConventionBeanFactory conventionBeanFactory = new ConventionBeanFactory(createNameToClassResolver(), createCandidateEvaluator()); GenericApplicationContext context = new GenericApplicationContext(conventionBeanFactory); prepareContext(context); customizeBeanFactory(context.getDefaultListableBeanFactory()); createBeanDefinitionReader(context).loadBeanDefinitions(locations); AnnotationConfigUtils.registerAnnotationConfigProcessors(context); customizeContext(context); context.refresh(); context.registerShutdownHook(); return context; } private NameToClassResolver createNameToClassResolver() { try { return nameToClassResolver.newInstance(); } catch (InstantiationException e) { throw new RuntimeException(e); } catch (IllegalAccessException e) { throw new RuntimeException(e); } } private CandidateEvaluator createCandidateEvaluator() { try { return candidateEvaluator.newInstance(); } catch (InstantiationException e) { throw new RuntimeException(e); } catch (IllegalAccessException e) { throw new RuntimeException(e); } } protected void prepareContext(GenericApplicationContext context) { } protected void customizeBeanFactory(DefaultListableBeanFactory beanFactory) { } protected BeanDefinitionReader createBeanDefinitionReader(GenericApplicationContext context) { return new XmlBeanDefinitionReader(context); } protected void customizeContext(GenericApplicationContext context) { } }