/*
* 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.security.graph.impl;
import com.hp.hpl.jena.graph.BulkUpdateHandler;
import com.hp.hpl.jena.graph.Graph;
import com.hp.hpl.jena.shared.PrefixMapping;
import org.apache.jena.security.SecurityEvaluator;
import org.apache.jena.security.graph.SecuredBulkUpdateHandler;
import org.apache.jena.security.graph.SecuredGraph;
import org.apache.jena.security.graph.SecuredPrefixMapping;
import org.apache.jena.security.impl.ItemHolder;
import org.apache.jena.security.impl.SecuredItemInvoker;
public class Factory
{
/**
* Create an instance of the SecuredBulkUpdateHandler
*
* @param graph
* The SecuredGraph that created the handler
* @param handler
* The unsecured handler from the base graph.
* @return SecuredBulkUpdateHandler.
*/
static SecuredBulkUpdateHandler getInstance( final SecuredGraphImpl graph,
final Graph baseGraph, final BulkUpdateHandler handler )
{
final ItemHolder<BulkUpdateHandler, SecuredBulkUpdateHandler> holder = new ItemHolder<BulkUpdateHandler, SecuredBulkUpdateHandler>(
handler);
final SecuredBulkUpdateHandlerImpl checker = new SecuredBulkUpdateHandlerImpl(
graph, baseGraph, holder);
// if we are going to create a duplicate proxy, just return this
// one.
if (handler instanceof SecuredBulkUpdateHandler)
{
if (checker.isEquivalent((SecuredBulkUpdateHandler) handler))
{
return (SecuredBulkUpdateHandler) handler;
}
}
return holder.setSecuredItem(new SecuredItemInvoker(handler.getClass(),
checker));
}
/**
* Create an instance of SecuredPrefixMapping
*
* @param graph
* The SecuredGraph that contains the prefixmapping.
* @param prefixMapping
* The prefixmapping returned from the base graph.
* @return The SecuredPrefixMapping.
*/
static SecuredPrefixMapping getInstance( final SecuredGraphImpl graph,
final PrefixMapping prefixMapping )
{
final ItemHolder<PrefixMapping, SecuredPrefixMapping> holder = new ItemHolder<PrefixMapping, SecuredPrefixMapping>(
prefixMapping);
final SecuredPrefixMappingImpl checker = new SecuredPrefixMappingImpl(
graph, holder);
// if we are going to create a duplicate proxy just return this one.
if (prefixMapping instanceof SecuredPrefixMapping)
{
if (checker.isEquivalent((SecuredPrefixMapping) prefixMapping))
{
return (SecuredPrefixMapping) prefixMapping;
}
}
return holder.setSecuredItem(new SecuredItemInvoker(prefixMapping
.getClass(), checker));
}
/**
* Create an instance of the SecuredGraph
*
* @param securityEvaluator
* The security evaluator to use
* @param graphIRI
* The IRI for the graph.
* @param graph
* The graph that we are wrapping.
* @return the secured graph
*/
public static SecuredGraph getInstance(
final SecurityEvaluator securityEvaluator, final String graphIRI,
final Graph graph )
{
final ItemHolder<Graph, SecuredGraphImpl> holder = new ItemHolder<Graph, SecuredGraphImpl>(
graph);
final SecuredGraphImpl checker = new SecuredGraphImpl(
securityEvaluator, graphIRI, holder) {
};
// If we going to create a duplicate proxy return this one.
if (graph instanceof SecuredGraphImpl)
{
if (checker.isEquivalent((SecuredGraphImpl) graph))
{
return (SecuredGraph) graph;
}
}
return holder.setSecuredItem(new SecuredItemInvoker(graph.getClass(),
checker));
}
}