# HttpRepositoryService.java

    /*
     * Copyright (c) 2008, Niclas Hedhman. 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.qi4j.library.rdf.repository;

    import org.openrdf.repository.Repository;
    import org.openrdf.repository.RepositoryException;
    import org.openrdf.repository.http.HTTPRepository;
    import org.qi4j.api.activation.ActivatorAdapter;
    import org.qi4j.api.activation.Activators;
    import org.qi4j.api.configuration.Configuration;
    import org.qi4j.api.injection.scope.This;
    import org.qi4j.api.mixin.Mixins;
    import org.qi4j.api.property.Property;
    import org.qi4j.api.service.ServiceComposite;
    import org.qi4j.api.service.ServiceReference;

    @Mixins( HttpRepositoryService.HttpRepositoryMixin.class )
    @Activators( HttpRepositoryService.Activator.class )
    public interface HttpRepositoryService
        extends Repository, ServiceComposite
    {
        @Override
        void initialize()
                throws RepositoryException;

        @Override
        void shutDown()
                throws RepositoryException;

        public static class Activator
                extends ActivatorAdapter<ServiceReference<HttpRepositoryService>>
        {

            @Override
            public void afterActivation( ServiceReference<HttpRepositoryService> activated )
                    throws Exception
            {
                activated.get().initialize();
            }

            @Override
            public void beforePassivation( ServiceReference<HttpRepositoryService> passivating )
                    throws Exception
            {
                passivating.get().shutDown();
            }

        }

        public static class HttpRepositoryMixin
            extends HTTPRepository
            implements Repository
        {
            public HttpRepositoryMixin( @This Configuration<HttpRepositoryConfiguration> configuration )
            {
                super( getRepositoryUrl( configuration.get() ), getRepositoryId( configuration.get() ) );
            }

            private static String getRepositoryUrl( HttpRepositoryConfiguration configuration )
            {
                Property<String> repositoryUrl = configuration.repositoryUrl();
                String url = repositoryUrl.get();
                if( url == null )
                {
                    url = "http://localhost:8183/";
                    repositoryUrl.set( url );
                }
                return url;
            }

            private static String getRepositoryId( HttpRepositoryConfiguration configuration )
            {
                Property<String> id = configuration.repositoryId();
                if( id.get() == null )
                {
                    id.set( "qi4j" );
                }
                return id.get();
            }
        }
    }