/*
* Copyright 2000-2004 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.jetspeed.om.registry.base;
import org.apache.jetspeed.om.registry.MediaTypeRegistry;
import org.apache.jetspeed.om.registry.MediaTypeEntry;
import org.apache.jetspeed.om.registry.RegistryEntry;
import org.apache.jetspeed.om.registry.InvalidEntryException;
import org.apache.jetspeed.om.registry.RegistryException;
import org.apache.jetspeed.services.Registry;
import org.apache.jetspeed.services.logging.JetspeedLogFactoryService;
import org.apache.jetspeed.services.logging.JetspeedLogger;
import org.apache.jetspeed.capability.CapabilityMap;
import java.util.Iterator;
import java.util.Enumeration;
import java.util.List;
import java.util.ArrayList;
/**
* Extends BaseRegistry implementation to override object creation
* method
*
* @author <a href="mailto:raphael@apache.org">Rapha�l Luta</a>
* @version $Id: BaseMediaTypeRegistry.java,v 1.7 2004/02/23 03:08:26 jford Exp $
*/
public class BaseMediaTypeRegistry extends BaseOrderedRegistry
implements MediaTypeRegistry
{
/**
* Static initialization of the logger for this class
*/
private static final JetspeedLogger logger = JetspeedLogFactoryService.getLogger(BaseMediaTypeRegistry.class.getName());
/*
* Find media-types in this registry that match the CapabilityMap requirements
*
* @param category The category and optional subcategories.
* @return Iterator The result as an iterator.
*/
public Iterator findForCapability(CapabilityMap cm)
{
if (cm == null)
{
return null;
}
String type = cm.getPreferredType().getContentType();
List result = new ArrayList();
if ( logger.isDebugEnabled() )
{
logger.debug("MediaTypeRegistry: looking for type " + type );
}
if (type == null)
{
return result.iterator();
}
try
{
Enumeration en = getEntries();
while(en.hasMoreElements())
{
MediaTypeEntry mte = (MediaTypeEntry)en.nextElement();
if ( logger.isDebugEnabled() )
{
logger.debug("MediaTypeRegistry: found MediaTypeEntry for type " + mte.getMimeType() );
}
if (type.equals(mte.getMimeType()))
{
result.add(mte);
}
}
}
catch(Exception e)
{
logger.error("Exception", e);
}
if ( logger.isDebugEnabled() )
{
logger.debug("MediaTypeRegistry: found " + result.size() + " entries." );
}
return result.iterator();
}
/**
@see Registry#setEntry
*/
public void setEntry( RegistryEntry entry ) throws InvalidEntryException
{
// Delegate to the RegistryService to ensure correct handling of
// persistence if using file fragments
try
{
Registry.addEntry(Registry.MEDIA_TYPE, entry);
}
catch (RegistryException e)
{
logger.error("Exception", e);
}
}
/**
@see Registry#addEntry
*/
public void addEntry( RegistryEntry entry ) throws InvalidEntryException
{
// Delegate to the RegistryService to ensure correct handling of
// persistence if using file fragments
try
{
Registry.addEntry(Registry.MEDIA_TYPE, entry);
}
catch (RegistryException e)
{
logger.error("Exception", e);
}
}
/**
@see Registry#removeEntry
*/
public void removeEntry( String name )
{
// Delegate to the RegistryService to ensure correct handling of
// persistence if using file fragments
Registry.removeEntry(Registry.MEDIA_TYPE, name);
}
/**
@see Registry#removeEntry
*/
public void removeEntry( RegistryEntry entry )
{
// Delegate to the RegistryService to ensure correct handling of
// persistence if using file fragments
if (entry != null)
{
Registry.removeEntry(Registry.MEDIA_TYPE, entry.getName());
}
}
/**
* Creates a new RegistryEntry instance compatible with the current
* Registry instance implementation
*
* @return the newly created RegistryEntry
*/
public RegistryEntry createEntry()
{
return new BaseMediaTypeEntry();
}
}