/*
* 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 com.hp.hpl.jena.update;
import com.hp.hpl.jena.graph.Graph ;
import com.hp.hpl.jena.query.Dataset ;
import com.hp.hpl.jena.rdf.model.Model ;
import com.hp.hpl.jena.sparql.core.DatasetGraph ;
import com.hp.hpl.jena.sparql.core.DatasetGraphFactory ;
import com.hp.hpl.jena.sparql.modify.GraphStoreBasic ;
/** Operations to create a GraphStore
*/
public class GraphStoreFactory
{
/** Create an empty GraphStore with an empty default graph (in-memory) */
public static GraphStore create() { return new GraphStoreBasic(DatasetGraphFactory.createMem()) ; }
/** Create a GraphStore from a Model
* @param model
* @return GraphStore
*/
public static GraphStore create(Model model) { return create(model.getGraph()) ; }
/** Create a GraphStore from a Graph
* @param graph
* @return GraphStore
*/
public static GraphStore create(Graph graph) { return new GraphStoreBasic(DatasetGraphFactory.create(graph)) ; }
/** Create a GraphStore from a dataset so that updates apply to the graphs in the dataset.
* Throws UpdateException (an ARQException) if the GraphStore can not be created.
* This is not the way to get a GraphStore for SDB or TDB - an SDB Store object is a GraphStore
* no conversion necessary.
* @param dataset
* @throws UpdateException
*/
public static GraphStore create(Dataset dataset)
{
return create(dataset.asDatasetGraph()) ;
}
/** Create a GraphStore from a dataset (graph-level) so that updates apply to the graphs in the dataset.
* @param datasetGraph
* @throws UpdateException
*/
public static GraphStore create(DatasetGraph datasetGraph)
{
if ( datasetGraph instanceof GraphStore )
return (GraphStore)datasetGraph ;
return new GraphStoreBasic(datasetGraph) ;
}
}