/*
* Copyright (c) OSGi Alliance (2001, 2013). All Rights Reserved.
*
* 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.osgi.service.metatype;
import org.osgi.annotation.versioning.ConsumerType;
/**
* Provides access to metatypes. This interface can be implemented on a Managed
* Service or Managed Service Factory as well as registered as a service. When
* registered as a service, it must be registered with a
* {@link #METATYPE_FACTORY_PID} or {@link #METATYPE_PID} service property (or
* both). Any PID mentioned in either of these factories must be a valid
* argument to the {@link #getObjectClassDefinition(String, String)} method.
*
* @ThreadSafe
* @author $Id: 2812fb7a59609de7804d2e48bef61beefc8c0cee $
*/
@ConsumerType
public interface MetaTypeProvider {
/**
* Service property to signal that this service has
* {@link ObjectClassDefinition} objects for the given PIDs. The type of
* this service property is {@code String+}.
*
* @since 1.2
*/
String METATYPE_PID = "metatype.pid";
/**
* Service property to signal that this service has
* {@link ObjectClassDefinition} objects for the given factory PIDs. The
* type of this service property is {@code String+}.
*
* @since 1.2
*/
String METATYPE_FACTORY_PID = "metatype.factory.pid";
/**
* Returns an object class definition for the specified id localized to the
* specified locale.
*
* <p>
* The locale parameter must be a name that consists of {@code language}[
* "_" {@code country}[ "_" {@code variation}] ] as is customary in the
* {@code Locale} class. This {@code Locale} class is not used because
* certain profiles do not contain it.
*
* @param id The ID of the requested object class. This can be a pid or
* factory pid returned by getPids or getFactoryPids.
* @param locale The locale of the definition or {@code null} for default
* locale.
* @return A {@code ObjectClassDefinition} object.
* @throws IllegalArgumentException If the id or locale arguments are not
* valid
*/
public ObjectClassDefinition getObjectClassDefinition(String id, String locale);
/**
* Return a list of available locales.
*
* The results must be names that consists of language [ _ country [ _
* variation ]] as is customary in the {@code Locale} class.
*
* @return An array of locale strings or {@code null} if there is no locale
* specific localization can be found.
*
*/
public String[] getLocales();
}