| /* |
| * Copyright 2004-2005 The Apache Software Foundation. |
| * |
| * 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.apache.tiles.definition; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import javax.servlet.ServletContext; |
| import javax.servlet.ServletRequest; |
| |
| import org.apache.tiles.ComponentDefinition; |
| import org.apache.tiles.ComponentDefinitionsFactory; |
| import org.apache.tiles.DefinitionsFactory; |
| import org.apache.tiles.DefinitionsFactoryConfig; |
| import org.apache.tiles.DefinitionsFactoryException; |
| import org.apache.tiles.NoSuchDefinitionException; |
| import org.apache.tiles.TilesUtil; |
| |
| /** |
| * Wrapper from new definition factory interface to old interface. |
| * This class provides mapping from the old interface's life cycle to the new life cycle. |
| * @author Cedric Dumoulin |
| * @author David Geary |
| * @since 20020708 |
| */ |
| public class ComponentDefinitionsFactoryWrapper implements DefinitionsFactory { |
| |
| /** |
| * The underlying factory. |
| */ |
| private ComponentDefinitionsFactory factory = null; |
| |
| /** |
| * Factory configuration, |
| */ |
| private DefinitionsFactoryConfig config = null; |
| |
| /** |
| * Constructor. |
| * Create new wrapper for specified factory. |
| * @param factory The factory to create a wrapper for. |
| */ |
| public ComponentDefinitionsFactoryWrapper(ComponentDefinitionsFactory factory) { |
| this.factory = factory; |
| } |
| |
| /** |
| * Constructor. |
| * Create new wrapper. |
| * The config object passed to init method should reference a factory implementing |
| * {@link ComponentDefinitionsFactory}. |
| */ |
| public ComponentDefinitionsFactoryWrapper() { |
| super(); |
| } |
| |
| /** |
| * Get requested definition. |
| * @param name Name of the definition. |
| * @param request The request we are processing. |
| * @param servletContext Our servlet context. |
| * @return ComponentDefition |
| */ |
| public ComponentDefinition getDefinition( |
| String name, |
| ServletRequest request, |
| ServletContext servletContext) |
| throws NoSuchDefinitionException, DefinitionsFactoryException { |
| |
| return factory.getDefinition(name, request, servletContext); |
| } |
| |
| /** |
| * Call underlying factory init method. |
| * @param config DefinitionsFactoryConfig. |
| * @param servletContext Our servlet context. |
| */ |
| public void init(DefinitionsFactoryConfig config, ServletContext servletContext) |
| throws DefinitionsFactoryException { |
| |
| this.config = config; |
| |
| // create factory and initialize it |
| if (factory == null) { |
| factory = createFactoryInstance(config.getFactoryClassname()); |
| } |
| |
| factory.initFactory(servletContext, createConfigMap(config)); |
| } |
| |
| /** |
| * Do nothing because old life cycle has no equivalent. |
| */ |
| public void destroy() { |
| factory = null; |
| } |
| |
| /** |
| * Set underlying factory configuration. |
| * @param config DefinitionsFactoryConfig to use. |
| * @param servletContext Our servlet context. |
| * |
| */ |
| public void setConfig( |
| DefinitionsFactoryConfig config, |
| ServletContext servletContext) |
| throws DefinitionsFactoryException { |
| |
| ComponentDefinitionsFactory newFactory = |
| createFactoryInstance(config.getFactoryClassname()); |
| |
| newFactory.initFactory(servletContext, createConfigMap(config)); |
| factory = newFactory; |
| } |
| |
| /** |
| * Get underlying factory configuration. |
| * @return DefinitionsFactoryConfig. |
| */ |
| public DefinitionsFactoryConfig getConfig() { |
| return config; |
| } |
| |
| /** |
| * Get internal factory. |
| * @return The internal ComponentDefitionsFactory. |
| */ |
| public ComponentDefinitionsFactory getInternalFactory() { |
| return factory; |
| } |
| |
| /** |
| * Create Definition factory from provided classname which must implement {@link ComponentDefinitionsFactory}. |
| * Factory class must extend {@link DefinitionsFactory}. |
| * @param classname Class name of the factory to create. |
| * @return newly created factory. |
| * @throws DefinitionsFactoryException If an error occur while initializing factory |
| */ |
| protected ComponentDefinitionsFactory createFactoryInstance(String classname) |
| throws DefinitionsFactoryException { |
| |
| try { |
| Class factoryClass = TilesUtil.applicationClass(classname); |
| Object factory = factoryClass.newInstance(); |
| return (ComponentDefinitionsFactory) factory; |
| |
| } catch (ClassCastException ex) { // Bad classname |
| throw new DefinitionsFactoryException( |
| "Error - createDefinitionsFactory : Factory class '" |
| + classname |
| + " must implement 'DefinitionsFactory'.", |
| ex); |
| |
| } catch (ClassNotFoundException ex) { // Bad classname |
| throw new DefinitionsFactoryException( |
| "Error - createDefinitionsFactory : Bad class name '" |
| + classname |
| + "'.", |
| ex); |
| |
| } catch (InstantiationException ex) { // Bad constructor or error |
| throw new DefinitionsFactoryException(ex); |
| |
| } catch (IllegalAccessException ex) { |
| throw new DefinitionsFactoryException(ex); |
| } |
| |
| } |
| |
| /** |
| * Return String representation. |
| * Calls toString() on underlying factory. |
| * @return String representation. |
| */ |
| public String toString() { |
| return getInternalFactory().toString(); |
| } |
| |
| /** |
| * Create map of configuration attributes from configuration object. |
| * Mapping is done between old names and new names. |
| * @param config The DefinitionsFactoryConfig to use. |
| * @return Map Map of name/value pairs. |
| */ |
| public static Map createConfigMap(DefinitionsFactoryConfig config) { |
| Map map = new HashMap(config.getAttributes()); |
| // Add property attributes using old names |
| map.put( |
| DefinitionsFactoryConfig.DEFINITIONS_CONFIG_PARAMETER_NAME, |
| config.getDefinitionConfigFiles()); |
| |
| map.put( |
| DefinitionsFactoryConfig.PARSER_VALIDATE_PARAMETER_NAME, |
| new Boolean(config.getParserValidate()).toString()); |
| |
| if (!"org.apache.tiles.xmlDefinition.I18nFactorySet" |
| .equals(config.getFactoryClassname())) { |
| |
| map.put( |
| DefinitionsFactoryConfig.FACTORY_CLASSNAME_PARAMETER_NAME, |
| config.getFactoryClassname()); |
| } |
| |
| return map; |
| } |
| |
| } |