// Copyright 2010 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.tapestry5.internal.services;
import java.util.Locale;
import java.util.Map;
import org.apache.tapestry5.internal.structure.Page;
import org.apache.tapestry5.ioc.internal.util.CollectionFactory;
import org.apache.tapestry5.ioc.internal.util.InternalUtils;
import org.apache.tapestry5.ioc.services.ThreadCleanupListener;
import org.apache.tapestry5.ioc.services.ThreadLocale;
import org.apache.tapestry5.services.ComponentClassResolver;
import org.slf4j.Logger;
public class NonPoolingRequestPageCacheImpl implements RequestPageCache, ThreadCleanupListener
{
private final Logger logger;
private final ComponentClassResolver resolver;
private final PageSource pageSource;
private final ThreadLocale threadLocale;
private final Map<String, Page> cache = CollectionFactory.newMap();
public NonPoolingRequestPageCacheImpl(Logger logger, ComponentClassResolver resolver, PageSource pageSource,
ThreadLocale threadLocale)
{
this.logger = logger;
this.resolver = resolver;
this.pageSource = pageSource;
this.threadLocale = threadLocale;
}
public void threadDidCleanup()
{
for (Page page : cache.values())
{
try
{
page.detached();
}
catch (Throwable t)
{
logger.error(String.format("Error detaching page %s: %s", page, InternalUtils.toMessage(t)), t);
}
}
}
public Page get(String pageName)
{
String canonical = resolver.canonicalizePageName(pageName);
Page page = cache.get(canonical);
if (page == null)
{
Locale locale = threadLocale.getLocale();
page = pageSource.getPage(canonical, locale);
try
{
page.attached();
}
catch (Throwable t)
{
throw new RuntimeException(String.format("Unable to attach page %s (%s): %s", canonical, locale,
InternalUtils.toMessage(t)), t);
}
cache.put(canonical, page);
}
return page;
}
}