/*
* 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.sparql.graph;
import com.hp.hpl.jena.graph.BulkUpdateHandler ;
import com.hp.hpl.jena.graph.Graph ;
import com.hp.hpl.jena.graph.TransactionHandler ;
import com.hp.hpl.jena.graph.Triple ;
import com.hp.hpl.jena.graph.impl.SimpleBulkUpdateHandler ;
import com.hp.hpl.jena.graph.impl.SimpleTransactionHandler ;
import com.hp.hpl.jena.graph.impl.WrappedGraph ;
import com.hp.hpl.jena.shared.AddDeniedException ;
import com.hp.hpl.jena.shared.DeleteDeniedException ;
public class GraphReadOnly extends WrappedGraph
{
public GraphReadOnly(Graph graph) { super(graph) ; }
@Override
public void add(Triple t) throws AddDeniedException
{ throw new AddDeniedException("read-only graph") ; }
@Override
public void performAdd(Triple t) throws AddDeniedException
{ throw new AddDeniedException("read-only graph") ; }
@Override
public void delete(Triple t) throws DeleteDeniedException
{ throw new DeleteDeniedException("read-only graph") ; }
@Override
public void performDelete(Triple t) throws DeleteDeniedException
{ throw new DeleteDeniedException("read-only graph") ; }
@Override
public TransactionHandler getTransactionHandler()
{
// AKA "no".
return new SimpleTransactionHandler() ;
}
@Deprecated
@Override
public BulkUpdateHandler getBulkUpdateHandler()
{
//This turns all operations into calls to add/remove.
return new SimpleBulkUpdateHandler(this) ;
}
}