// 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.tapestry.services.impl;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import org.apache.hivemind.ApplicationRuntimeException;
import org.apache.hivemind.ClassResolver;
import org.apache.hivemind.ErrorLog;
import org.apache.hivemind.Resource;
import org.apache.hivemind.service.ThreadLocale;
import org.apache.hivemind.util.Defense;
import org.apache.tapestry.describe.HTMLDescriber;
import org.apache.tapestry.engine.IPageSource;
import org.apache.tapestry.engine.IPropertySource;
import org.apache.tapestry.engine.IScriptSource;
import org.apache.tapestry.engine.ISpecificationSource;
import org.apache.tapestry.engine.state.ApplicationStateManager;
import org.apache.tapestry.error.ExceptionPresenter;
import org.apache.tapestry.error.RequestExceptionReporter;
import org.apache.tapestry.listener.ListenerMapSource;
import org.apache.tapestry.markup.MarkupWriterSource;
import org.apache.tapestry.services.ComponentMessagesSource;
import org.apache.tapestry.services.ComponentPropertySource;
import org.apache.tapestry.services.DataSqueezer;
import org.apache.tapestry.services.Infrastructure;
import org.apache.tapestry.services.LinkFactory;
import org.apache.tapestry.services.ObjectPool;
import org.apache.tapestry.services.RequestCycleFactory;
import org.apache.tapestry.services.ResetEventCoordinator;
import org.apache.tapestry.services.ResponseRenderer;
import org.apache.tapestry.services.ServiceMap;
import org.apache.tapestry.services.TemplateSource;
import org.apache.tapestry.spec.IApplicationSpecification;
import org.apache.tapestry.web.WebContext;
import org.apache.tapestry.web.WebContextResource;
import org.apache.tapestry.web.WebRequest;
import org.apache.tapestry.web.WebResponse;
/**
* Allows access to selected HiveMind services.
*
* @author Howard Lewis Ship
* @since 4.0
*/
public class InfrastructureImpl implements Infrastructure
{
/**
* List of {@link org.apache.tapestry.services.impl.InfrastructureContribution}.
*/
private List _normalContributions;
/**
* List of {@link org.apache.tapestry.services.impl.InfrastructureContribution}.
*/
private List _overrideContributions;
private Map _properties = new HashMap();
private boolean _initialized;
private String _mode;
private ErrorLog _errorLog;
private ClassResolver _classResolver;
private ThreadLocale _threadLocale;
public void setLocale(Locale locale)
{
_threadLocale.setLocale(locale);
}
public String getApplicationId()
{
return (String) getProperty("applicationId");
}
public IPropertySource getApplicationPropertySource()
{
return (IPropertySource) getProperty("applicationPropertySource");
}
public IApplicationSpecification getApplicationSpecification()
{
return (IApplicationSpecification) getProperty("applicationSpecification");
}
public ApplicationStateManager getApplicationStateManager()
{
return (ApplicationStateManager) getProperty("applicationStateManager");
}
public ClassResolver getClassResolver()
{
return _classResolver;
}
public ComponentMessagesSource getComponentMessagesSource()
{
return (ComponentMessagesSource) getProperty("componentMessagesSource");
}
public ComponentPropertySource getComponentPropertySource()
{
return (ComponentPropertySource) getProperty("componentPropertySource");
}
public String getContextPath()
{
return getRequest().getContextPath();
}
public Resource getContextRoot()
{
WebContext context = (WebContext) getProperty("context");
return new WebContextResource(context, "/");
}
public DataSqueezer getDataSqueezer()
{
return (DataSqueezer) getProperty("dataSqueezer");
}
public IPropertySource getGlobalPropertySource()
{
return (IPropertySource) getProperty("globalPropertySource");
}
public LinkFactory getLinkFactory()
{
return (LinkFactory) getProperty("linkFactory");
}
public ObjectPool getObjectPool()
{
return (ObjectPool) getProperty("objectPool");
}
public IPageSource getPageSource()
{
return (IPageSource) getProperty("pageSource");
}
public WebRequest getRequest()
{
return (WebRequest) getProperty("request");
}
public RequestCycleFactory getRequestCycleFactory()
{
return (RequestCycleFactory) getProperty("requestCycleFactory");
}
public RequestExceptionReporter getRequestExceptionReporter()
{
return (RequestExceptionReporter) getProperty("requestExceptionReporter");
}
public ResetEventCoordinator getResetEventCoordinator()
{
return (ResetEventCoordinator) getProperty("resetEventCoordinator");
}
public WebResponse getResponse()
{
return (WebResponse) getProperty("response");
}
public ResponseRenderer getResponseRenderer()
{
return (ResponseRenderer) getProperty("responseRenderer");
}
public IScriptSource getScriptSource()
{
return (IScriptSource) getProperty("scriptSource");
}
public ServiceMap getServiceMap()
{
return (ServiceMap) getProperty("serviceMap");
}
public ISpecificationSource getSpecificationSource()
{
return (ISpecificationSource) getProperty("specificationSource");
}
public TemplateSource getTemplateSource()
{
return (TemplateSource) getProperty("templateSource");
}
public String getOutputEncoding()
{
return getApplicationPropertySource().getPropertyValue(
"org.apache.tapestry.output-encoding");
}
public MarkupWriterSource getMarkupWriterSource()
{
return (MarkupWriterSource) getProperty("markupWriterSource");
}
public HTMLDescriber getHTMLDescriber()
{
return (HTMLDescriber) getProperty("HTMLDescriber");
}
public ExceptionPresenter getExceptionPresenter()
{
return (ExceptionPresenter) getProperty("exceptionPresenter");
}
public ListenerMapSource getListenerMapSource()
{
return (ListenerMapSource) getProperty("listenerMapSource");
}
public Object getProperty(String propertyName)
{
Defense.notNull(propertyName, "propertyName");
if (!_initialized)
throw new IllegalStateException(ImplMessages.infrastructureNotInitialized());
Object result = _properties.get(propertyName);
if (result == null)
throw new ApplicationRuntimeException(ImplMessages
.missingInfrastructureProperty(propertyName));
return result;
}
public synchronized void initialize(String mode)
{
Defense.notNull(mode, "mode");
if (_initialized)
throw new IllegalStateException(ImplMessages.infrastructureAlreadyInitialized(
mode,
_mode));
Map normalByMode = buildMapFromContributions(_normalContributions, mode);
Map normal = buildMapFromContributions(_normalContributions, null);
Map overrideByMode = buildMapFromContributions(_overrideContributions, mode);
Map override = buildMapFromContributions(_overrideContributions, null);
addToProperties(overrideByMode);
addToProperties(override);
addToProperties(normalByMode);
addToProperties(normal);
_mode = mode;
_initialized = true;
}
private Map buildMapFromContributions(List contributions, String mode)
{
Map result = new HashMap();
Iterator i = contributions.iterator();
while (i.hasNext())
{
InfrastructureContribution ic = (InfrastructureContribution) i.next();
if (!ic.matchesMode(mode))
continue;
String propertyName = ic.getProperty();
InfrastructureContribution existing = (InfrastructureContribution) result
.get(propertyName);
if (existing != null)
{
_errorLog.error(ImplMessages.duplicateInfrastructureContribution(ic, existing
.getLocation()), ic.getLocation(), null);
continue;
}
result.put(propertyName, ic);
}
return result;
}
/**
* Adds to the master set of properties contributed objects that don't match an already existing
* key.
*
* @param map
* map of {@link org.apache.tapestry.services.impl.InfrastructureContribution}keyed
* on property name (String).
*/
private void addToProperties(Map map)
{
Iterator i = map.values().iterator();
while (i.hasNext())
{
InfrastructureContribution ic = (InfrastructureContribution) i.next();
String propertyName = ic.getProperty();
if (_properties.containsKey(propertyName))
continue;
_properties.put(propertyName, ic.getObject());
}
}
public void setClassResolver(ClassResolver classResolver)
{
_classResolver = classResolver;
}
public void setThreadLocale(ThreadLocale threadLocale)
{
_threadLocale = threadLocale;
}
public void setNormalContributions(List normalContributions)
{
_normalContributions = normalContributions;
}
public void setOverrideContributions(List overrideContributions)
{
_overrideContributions = overrideContributions;
}
public void setErrorLog(ErrorLog errorLog)
{
_errorLog = errorLog;
}
}