/*
* 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.felix.metatype;
import java.net.URL;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.TreeSet;
import org.apache.felix.metatype.internal.LocalizedObjectClassDefinition;
import org.apache.felix.metatype.internal.l10n.BundleResources;
import org.apache.felix.metatype.internal.l10n.Resources;
import org.osgi.framework.Bundle;
import org.osgi.framework.Constants;
import org.osgi.service.metatype.MetaTypeProvider;
import org.osgi.service.metatype.ObjectClassDefinition;
/**
* The <code>DefaultMetaTypeProvider</code> class is an implementation of the
* <code>MetaTypeProvider</code> interface whichis configured for a given
* bundle using a {@link MetaData} object.
* <p>
* This class may be used by clients, e.g. <code>ManagedService</code> or
* <code>ManagedServiceFactory</code> implementations to easily also implement
* the <code>MetaTypeProvider</code> interface.
*
* @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
*/
public class DefaultMetaTypeProvider implements MetaTypeProvider
{
private final Bundle bundle;
private final String localePrefix;
private Map objectClassDefinitions;
private Map designates;
private String[] locales;
public DefaultMetaTypeProvider( Bundle bundle, MetaData metadata )
{
this.bundle = bundle;
// copy from holder
if ( metadata.getObjectClassDefinitions() == null )
{
objectClassDefinitions = Collections.EMPTY_MAP;
}
else
{
Map copy = new HashMap( metadata.getObjectClassDefinitions() );
objectClassDefinitions = Collections.unmodifiableMap( copy );
}
if ( metadata.getDesignates() == null )
{
designates = Collections.EMPTY_MAP;
}
else
{
Map copy = new HashMap( metadata.getDesignates() );
designates = Collections.unmodifiableMap( copy );
}
String metaDataLocalePrefix = metadata.getLocalePrefix();
if ( metaDataLocalePrefix == null )
{
metaDataLocalePrefix = ( String ) bundle.getHeaders().get( Constants.BUNDLE_LOCALIZATION );
if ( metaDataLocalePrefix == null )
{
metaDataLocalePrefix = Constants.BUNDLE_LOCALIZATION_DEFAULT_BASENAME;
}
}
this.localePrefix = metaDataLocalePrefix;
}
/**
* Returns the <code>Bundle</code> to which this instance belongs.
*/
public Bundle getBundle()
{
return bundle;
}
/* (non-Javadoc)
* @see org.osgi.service.metatype.MetaTypeProvider#getLocales()
*/
public String[] getLocales()
{
if ( locales == null )
{
String path;
String pattern;
int lastSlash = localePrefix.lastIndexOf( '/' );
if ( lastSlash < 0 )
{
path = "/";
pattern = localePrefix;
}
else
{
path = localePrefix.substring( 0, lastSlash );
pattern = localePrefix.substring( lastSlash + 1 );
}
TreeSet localeSet = new TreeSet();
Enumeration entries = getBundle().findEntries( path, pattern + "*.properties", false );
if ( entries != null )
{
while ( entries.hasMoreElements() )
{
URL url = ( URL ) entries.nextElement();
String name = url.getPath();
name = name.substring( name.lastIndexOf( '/' ) + 1 + pattern.length(), name.length()
- ".properties".length() );
if ( name.startsWith( "_" ) )
{
name = name.substring( 1 );
}
if ( name.length() > 0 )
{
localeSet.add( name );
}
}
}
locales = ( String[] ) localeSet.toArray( new String[localeSet.size()] );
}
return ( locales.length == 0 ) ? null : locales;
}
/* (non-Javadoc)
* @see org.osgi.service.metatype.MetaTypeProvider#getObjectClassDefinition(java.lang.String, java.lang.String)
*/
public ObjectClassDefinition getObjectClassDefinition( String id, String locale )
{
Designate designate = getDesignate( id );
if ( designate == null || designate.getObject() == null )
{
return null;
}
String ocdRef = designate.getObject().getOcdRef();
OCD ocd = ( OCD ) objectClassDefinitions.get( ocdRef );
if ( ocd == null )
{
return null;
}
Resources resources = BundleResources.getResources( bundle, localePrefix, locale );
return new LocalizedObjectClassDefinition( bundle, ocd, resources );
}
public Designate getDesignate( String pid )
{
return ( Designate ) designates.get( pid );
}
protected Map getObjectClassDefinitions()
{
return objectClassDefinitions;
}
protected Map getDesignates()
{
return designates;
}
}