# SerializerContext.java

    /*
     * Copyright 2007, 2008 Niclas Hedhman.
     *
     * 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.serializer;

    import java.lang.reflect.Method;
    import org.openrdf.model.*;
    import org.qi4j.api.util.Classes;
    import org.qi4j.library.rdf.Rdfs;

    public final class SerializerContext
    {
        private final Graph graph;
        private final ValueFactory valueFactory;

        public SerializerContext( Graph graph )
        {
            this.valueFactory = graph.getValueFactory();
            this.graph = graph;
        }

        public Graph getGraph()
        {
            return graph;
        }

        public ValueFactory getValueFactory()
        {
            return valueFactory;
        }

        public String createServiceUri( String layer, String module, Class type, String identity )
        {
            String serviceType = Classes.normalizeClassToURI( type.getName() );
            String moduleUri = createModuleUri( layer, module );
            return moduleUri + "/" + serviceType + "/" + identity;
        }

        public String createCompositeUri( String module, Class composite )
        {
            String compositeName = Classes.normalizeClassToURI( composite.getName() );
            return module + "/" + compositeName;
        }

        public String createApplicationUri( String app )
        {
            return "urn:qi4j:model:" + app;
        }

        public String createLayerUri( String appUri, String layer )
        {
            return appUri + "/" + layer;
        }

        public String createModuleUri( String layerUri, String module )
        {
            return layerUri + "/" + module;
        }

        public void setNameAndType( String node, String name, URI type )
        {
            addType( node, type );
            addName( node, name );
        }

        public void addName( String subject, String name )
        {
            Value nameValue = valueFactory.createLiteral( name );
            URI subjectUri = valueFactory.createURI( subject );
            graph.add( valueFactory.createStatement( subjectUri, Rdfs.LABEL, nameValue ) );
        }

        public void addType( String subject, URI type )
        {
            URI subjectUri = valueFactory.createURI( subject );
            Statement statement = valueFactory.createStatement( subjectUri, Rdfs.TYPE, type );
            graph.add( statement );
        }

        public void addStatement( String subject, URI predicate, String literal )
        {
            Literal object = valueFactory.createLiteral( literal );
            URI subjectUri = valueFactory.createURI( subject );
            Statement statement = valueFactory.createStatement( subjectUri, predicate, object );
            graph.add( statement );
        }

        public void addRelationship( String subject, URI relationship, String object )
        {
            URI subjectUri = valueFactory.createURI( subject );
            URI objectUri = valueFactory.createURI( object );
            Statement statement = valueFactory.createStatement( subjectUri, relationship, objectUri );
            graph.add( statement );
        }

        public void addStatement( String subject, URI predicate, boolean literal )
        {
            URI subjectUri = valueFactory.createURI( subject );
            Literal object = valueFactory.createLiteral( literal );
            Statement statement = valueFactory.createStatement( subjectUri, predicate, object );
            graph.add( statement );
        }

        public String createCompositeMethodUri( String compositeUri, Method method )
        {
            return compositeUri + "/" + method.toGenericString().replace( " ", "_" );
        }
    }