Java tutorial
/* * Copyright 2002-2008 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. */ package test.parsing; import java.util.ArrayList; import java.util.Collection; import java.util.Collections; import java.util.LinkedHashMap; import java.util.LinkedList; import java.util.List; import java.util.Map; import org.springframework.beans.factory.parsing.AliasDefinition; import org.springframework.beans.factory.parsing.ComponentDefinition; import org.springframework.beans.factory.parsing.DefaultsDefinition; import org.springframework.beans.factory.parsing.ImportDefinition; import org.springframework.beans.factory.parsing.ReaderEventListener; /** * @author Rob Harrop * @author Juergen Hoeller * @author Chris Beams */ public class CollectingReaderEventListener implements ReaderEventListener { private final List<DefaultsDefinition> defaults = new LinkedList<DefaultsDefinition>(); private final Map<String, Object> componentDefinitions = new LinkedHashMap<String, Object>(8); private final Map<String, Object> aliasMap = new LinkedHashMap<String, Object>(8); private final List<ImportDefinition> imports = new LinkedList<ImportDefinition>(); public void defaultsRegistered(DefaultsDefinition defaultsDefinition) { this.defaults.add(defaultsDefinition); } public List<DefaultsDefinition> getDefaults() { return Collections.unmodifiableList(this.defaults); } public void componentRegistered(ComponentDefinition componentDefinition) { this.componentDefinitions.put(componentDefinition.getName(), componentDefinition); } public ComponentDefinition getComponentDefinition(String name) { return (ComponentDefinition) this.componentDefinitions.get(name); } public ComponentDefinition[] getComponentDefinitions() { Collection<Object> collection = this.componentDefinitions.values(); return collection.toArray(new ComponentDefinition[collection.size()]); } @SuppressWarnings("unchecked") public void aliasRegistered(AliasDefinition aliasDefinition) { List aliases = (List) this.aliasMap.get(aliasDefinition.getBeanName()); if (aliases == null) { aliases = new ArrayList(); this.aliasMap.put(aliasDefinition.getBeanName(), aliases); } aliases.add(aliasDefinition); } public List<?> getAliases(String beanName) { List<?> aliases = (List<?>) this.aliasMap.get(beanName); return aliases == null ? null : Collections.unmodifiableList(aliases); } public void importProcessed(ImportDefinition importDefinition) { this.imports.add(importDefinition); } public List<ImportDefinition> getImports() { return Collections.unmodifiableList(this.imports); } }