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/*
* $Id: CompleteAutoloadTilesContainerFactory.java 1332136 2012-04-30 09:34:09Z mck $
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.extras.complete;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Locale;
import java.util.regex.Pattern;
import javax.el.ArrayELResolver;
import javax.el.BeanELResolver;
import javax.el.CompositeELResolver;
import javax.el.ELResolver;
import javax.el.ListELResolver;
import javax.el.MapELResolver;
import javax.el.ResourceBundleELResolver;
import ognl.OgnlException;
import ognl.OgnlRuntime;
import ognl.PropertyAccessor;
import org.apache.tiles.TilesContainer;
import org.apache.tiles.compat.definition.digester.CompatibilityDigesterDefinitionsReader;
import org.apache.tiles.context.TilesRequestContextHolder;
import org.apache.tiles.definition.DefinitionsReader;
import org.apache.tiles.definition.pattern.DefinitionPatternMatcherFactory;
import org.apache.tiles.definition.pattern.PatternDefinitionResolver;
import org.apache.tiles.definition.pattern.PrefixedPatternDefinitionResolver;
import org.apache.tiles.definition.pattern.regexp.RegexpDefinitionPatternMatcherFactory;
import org.apache.tiles.definition.pattern.wildcard.WildcardDefinitionPatternMatcherFactory;
import org.apache.tiles.el.ELAttributeEvaluator;
import org.apache.tiles.el.JspExpressionFactoryFactory;
import org.apache.tiles.el.ScopeELResolver;
import org.apache.tiles.el.TilesContextBeanELResolver;
import org.apache.tiles.el.TilesContextELResolver;
import org.apache.tiles.evaluator.AttributeEvaluatorFactory;
import org.apache.tiles.evaluator.BasicAttributeEvaluatorFactory;
import org.apache.tiles.factory.BasicTilesContainerFactory;
import org.apache.tiles.factory.TilesContainerFactoryException;
import org.apache.tiles.freemarker.TilesSharedVariableFactory;
import org.apache.tiles.impl.mgmt.CachingTilesContainer;
import org.apache.tiles.locale.LocaleResolver;
import org.apache.tiles.mvel.MVELAttributeEvaluator;
import org.apache.tiles.mvel.ScopeVariableResolverFactory;
import org.apache.tiles.mvel.TilesContextBeanVariableResolverFactory;
import org.apache.tiles.mvel.TilesContextVariableResolverFactory;
import org.apache.tiles.ognl.AnyScopePropertyAccessor;
import org.apache.tiles.ognl.DelegatePropertyAccessor;
import org.apache.tiles.ognl.NestedObjectDelegatePropertyAccessor;
import org.apache.tiles.ognl.OGNLAttributeEvaluator;
import org.apache.tiles.ognl.PropertyAccessorDelegateFactory;
import org.apache.tiles.ognl.ScopePropertyAccessor;
import org.apache.tiles.ognl.TilesApplicationContextNestedObjectExtractor;
import org.apache.tiles.ognl.TilesContextPropertyAccessorDelegateFactory;
import org.apache.tiles.request.ApplicationContext;
import org.apache.tiles.request.ApplicationResource;
import org.apache.tiles.request.Request;
import org.apache.tiles.request.freemarker.render.FreemarkerRenderer;
import org.apache.tiles.request.freemarker.render.FreemarkerRendererBuilder;
import org.apache.tiles.request.freemarker.servlet.SharedVariableLoaderFreemarkerServlet;
import org.apache.tiles.request.mustache.MustacheRenderer;
import org.apache.tiles.request.render.BasicRendererFactory;
import org.apache.tiles.request.render.ChainedDelegateRenderer;
import org.apache.tiles.request.render.Renderer;
import org.apache.tiles.request.servlet.ServletUtil;
import org.apache.tiles.request.velocity.render.VelocityRenderer;
import org.apache.tiles.request.velocity.render.VelocityRendererBuilder;
import org.mvel2.integration.VariableResolverFactory;
/**
* Tiles container factory that:
*
*
create supporting objects for Velocity and FreeMarker;
*
create renderers for Velocity, FreeMarker, and Mustache templates;
*
allows using EL, MVEL and OGNL as attribute expressions;
*
allows using Wildcards and Regular Expressions in definition names;
*
loads Tiles 1.x definition files;
*
loads all the definition files that have the "tiles*.xml" pattern under
* /WEB-INF directory (and subdirectories) and under
* META-INF directories (and subdirectories) in every jar.
*
*
* @version $Rev: 1332136 $ $Date: 2012-04-30 05:34:09 -0400 (Mon, 30 Apr 2012) $
* @since 2.2.0
*/
public class CompleteAutoloadTilesContainerFactory extends BasicTilesContainerFactory {
/**
* The freemarker renderer name.
*/
private static final String FREEMARKER_RENDERER_NAME = "freemarker";
/**
* The velocity renderer name.
*/
private static final String VELOCITY_RENDERER_NAME = "velocity";
/**
* The mustache renderer name.
*/
private static final String MUSTACHE_RENDERER_NAME = "mustache";
/** {@inheritDoc} */
@Override
public TilesContainer createDecoratedContainer(TilesContainer originalContainer,
ApplicationContext applicationContext) {
return new CachingTilesContainer(originalContainer);
}
/** {@inheritDoc} */
@Override
protected void registerAttributeRenderers(
final BasicRendererFactory rendererFactory,
final ApplicationContext applicationContext,
final TilesContainer container,
final AttributeEvaluatorFactory attributeEvaluatorFactory) {
super.registerAttributeRenderers(rendererFactory, applicationContext, container, attributeEvaluatorFactory);
FreemarkerRenderer freemarkerRenderer = FreemarkerRendererBuilder
.createInstance()
.setApplicationContext(applicationContext)
.setParameter("TemplatePath", "/")
.setParameter("NoCache", "true")
.setParameter("ContentType", "text/html")
.setParameter("template_update_delay", "0")
.setParameter("default_encoding", "ISO-8859-1")
.setParameter("number_format", "0.##########")
.setParameter(SharedVariableLoaderFreemarkerServlet.CUSTOM_SHARED_VARIABLE_FACTORIES_INIT_PARAM,
"tiles," + TilesSharedVariableFactory.class.getName()).build();
rendererFactory.registerRenderer(FREEMARKER_RENDERER_NAME, freemarkerRenderer);
VelocityRenderer velocityRenderer = VelocityRendererBuilder.createInstance()
.setApplicationContext(applicationContext).build();
rendererFactory.registerRenderer(VELOCITY_RENDERER_NAME, velocityRenderer);
MustacheRenderer mustacheRenderer = new MustacheRenderer();
mustacheRenderer.setAcceptPattern(Pattern.compile(".+\\.mustache"));
rendererFactory.registerRenderer(MUSTACHE_RENDERER_NAME, mustacheRenderer);
}
/** {@inheritDoc} */
@Override
protected Renderer createDefaultAttributeRenderer(BasicRendererFactory rendererFactory,
ApplicationContext applicationContext, TilesContainer container,
AttributeEvaluatorFactory attributeEvaluatorFactory) {
ChainedDelegateRenderer retValue = new ChainedDelegateRenderer();
retValue.addAttributeRenderer(rendererFactory.getRenderer(DEFINITION_RENDERER_NAME));
retValue.addAttributeRenderer(rendererFactory.getRenderer(VELOCITY_RENDERER_NAME));
retValue.addAttributeRenderer(rendererFactory.getRenderer(FREEMARKER_RENDERER_NAME));
retValue.addAttributeRenderer(rendererFactory.getRenderer(MUSTACHE_RENDERER_NAME));
retValue.addAttributeRenderer(rendererFactory.getRenderer(TEMPLATE_RENDERER_NAME));
retValue.addAttributeRenderer(rendererFactory.getRenderer(STRING_RENDERER_NAME));
return retValue;
}
/** {@inheritDoc} */
@Override
protected AttributeEvaluatorFactory createAttributeEvaluatorFactory(ApplicationContext applicationContext,
LocaleResolver resolver) {
BasicAttributeEvaluatorFactory attributeEvaluatorFactory = new BasicAttributeEvaluatorFactory(
createELEvaluator(applicationContext));
attributeEvaluatorFactory.registerAttributeEvaluator("MVEL", createMVELEvaluator());
attributeEvaluatorFactory.registerAttributeEvaluator("OGNL", createOGNLEvaluator());
return attributeEvaluatorFactory;
}
/** {@inheritDoc} */
@Override
protected PatternDefinitionResolver createPatternDefinitionResolver(Class customizationKeyClass) {
DefinitionPatternMatcherFactory wildcardFactory = new WildcardDefinitionPatternMatcherFactory();
DefinitionPatternMatcherFactory regexpFactory = new RegexpDefinitionPatternMatcherFactory();
PrefixedPatternDefinitionResolver resolver = new PrefixedPatternDefinitionResolver();
resolver.registerDefinitionPatternMatcherFactory("WILDCARD", wildcardFactory);
resolver.registerDefinitionPatternMatcherFactory("REGEXP", regexpFactory);
return resolver;
}
/** {@inheritDoc} */
@Override
protected List getSources(ApplicationContext applicationContext) {
Collection webINFSet = applicationContext.getResources("/WEB-INF/**/tiles*.xml");
Collection metaINFSet = applicationContext
.getResources("classpath*:META-INF/**/tiles*.xml");
List filteredResources = new ArrayList();
if (webINFSet != null) {
for (ApplicationResource resource : webINFSet) {
if (Locale.ROOT.equals(resource.getLocale())) {
filteredResources.add(resource);
}
}
}
if (metaINFSet != null) {
for (ApplicationResource resource : metaINFSet) {
if (Locale.ROOT.equals(resource.getLocale())) {
filteredResources.add(resource);
}
}
}
return filteredResources;
}
/** {@inheritDoc} */
@Override
protected DefinitionsReader createDefinitionsReader(ApplicationContext applicationContext) {
return new CompatibilityDigesterDefinitionsReader();
}
/**
* Creates the EL evaluator.
*
* @param applicationContext The Tiles application context.
* @return The EL evaluator.
*/
private ELAttributeEvaluator createELEvaluator(ApplicationContext applicationContext) {
ELAttributeEvaluator evaluator = new ELAttributeEvaluator();
JspExpressionFactoryFactory efFactory = new JspExpressionFactoryFactory();
efFactory.setApplicationContext(applicationContext);
evaluator.setExpressionFactory(efFactory.getExpressionFactory());
ELResolver elResolver = new CompositeELResolver() {
{
BeanELResolver beanElResolver = new BeanELResolver(false);
add(new ScopeELResolver());
add(new TilesContextELResolver(beanElResolver));
add(new TilesContextBeanELResolver());
add(new ArrayELResolver(false));
add(new ListELResolver(false));
add(new MapELResolver(false));
add(new ResourceBundleELResolver());
add(beanElResolver);
}
};
evaluator.setResolver(elResolver);
return evaluator;
}
/**
* Creates the MVEL evaluator.
*
* @return The MVEL evaluator.
*/
private MVELAttributeEvaluator createMVELEvaluator() {
TilesRequestContextHolder requestHolder = new TilesRequestContextHolder();
VariableResolverFactory variableResolverFactory = new ScopeVariableResolverFactory(requestHolder);
variableResolverFactory.setNextFactory(new TilesContextVariableResolverFactory(requestHolder));
variableResolverFactory.setNextFactory(new TilesContextBeanVariableResolverFactory(requestHolder));
MVELAttributeEvaluator mvelEvaluator = new MVELAttributeEvaluator(requestHolder, variableResolverFactory);
return mvelEvaluator;
}
/**
* Creates the OGNL evaluator.
*
* @return The OGNL evaluator.
*/
private OGNLAttributeEvaluator createOGNLEvaluator() {
try {
PropertyAccessor objectPropertyAccessor = OgnlRuntime.getPropertyAccessor(Object.class);
PropertyAccessor applicationContextPropertyAccessor = new NestedObjectDelegatePropertyAccessor(
new TilesApplicationContextNestedObjectExtractor(), objectPropertyAccessor);
PropertyAccessor anyScopePropertyAccessor = new AnyScopePropertyAccessor();
PropertyAccessor scopePropertyAccessor = new ScopePropertyAccessor();
PropertyAccessorDelegateFactory factory = new TilesContextPropertyAccessorDelegateFactory(
objectPropertyAccessor, applicationContextPropertyAccessor, anyScopePropertyAccessor,
scopePropertyAccessor);
PropertyAccessor tilesRequestAccessor = new DelegatePropertyAccessor(factory);
OgnlRuntime.setPropertyAccessor(Request.class, tilesRequestAccessor);
return new OGNLAttributeEvaluator();
} catch (OgnlException e) {
throw new TilesContainerFactoryException("Cannot initialize OGNL evaluator", e);
}
}
}
