/*
 * 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.jena.mem;

import org.apache.jena.graph.Graph ;
import org.apache.jena.graph.Triple.Field ;
import org.apache.jena.graph.impl.TripleStore ;

public class GraphTripleStoreMem extends GraphTripleStoreBase implements TripleStore
    {    
    public GraphTripleStoreMem( Graph parent )
        { 
        super( parent,
            new NodeToTriplesMapMem( Field.fieldSubject, Field.fieldPredicate, Field.fieldObject ),
            new NodeToTriplesMapMem( Field.fieldPredicate, Field.fieldObject, Field.fieldSubject ),
            new NodeToTriplesMapMem( Field.fieldObject, Field.fieldSubject, Field.fieldPredicate )
                ); 
        }
    
    public NodeToTriplesMapMem getSubjects()
        { return (NodeToTriplesMapMem) subjects; }

    public NodeToTriplesMapMem getPredicates()
        { return (NodeToTriplesMapMem) predicates; }
    
    public NodeToTriplesMapMem getObjects()
        { return (NodeToTriplesMapMem) objects; }
    
    }