/**
* 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.core;
import com.hp.hpl.jena.query.Query ;
import com.hp.hpl.jena.sparql.algebra.Op ;
import com.hp.hpl.jena.sparql.core.DatasetGraph ;
import com.hp.hpl.jena.sparql.core.DatasetGraphWrapper ;
import com.hp.hpl.jena.sparql.engine.Plan ;
import com.hp.hpl.jena.sparql.engine.QueryEngineFactory ;
import com.hp.hpl.jena.sparql.engine.QueryEngineRegistry ;
import com.hp.hpl.jena.sparql.engine.binding.Binding ;
import com.hp.hpl.jena.sparql.util.Context ;
/** Default processing for a DatasetGraphWrapper - unwrap and repeat */
public class QueryEngineFactoryWrapper implements QueryEngineFactory
{
public static void init() {
QueryEngineRegistry.addFactory(new QueryEngineFactoryWrapper()) ;
}
@Override
public boolean accept(Query query, DatasetGraph dsg, Context context) {
if ( !( dsg instanceof DatasetGraphWrapper ) )
return false ;
DatasetGraph dsg2 = ((DatasetGraphWrapper)dsg).getWrapped() ;
return QueryEngineRegistry.findFactory(query, dsg2, context).accept(query, dsg2, context) ;
}
@Override
public Plan create(Query query, DatasetGraph dsg, Binding inputBinding, Context context) {
if ( !( dsg instanceof DatasetGraphWrapper ) )
return null ;
DatasetGraph dsg2 = ((DatasetGraphWrapper)dsg).getWrapped() ;
return QueryEngineRegistry.findFactory(query, dsg2, context).create(query, dsg2, inputBinding, context) ;
}
@Override
public boolean accept(Op op, DatasetGraph dsg, Context context) {
if ( !( dsg instanceof DatasetGraphWrapper ) )
return false ;
DatasetGraph dsg2 = ((DatasetGraphWrapper)dsg).getWrapped() ;
return QueryEngineRegistry.findFactory(op, dsg2, context).accept(op, dsg2, context) ;
}
@Override
public Plan create(Op op, DatasetGraph dsg, Binding inputBinding, Context context) {
if ( !( dsg instanceof DatasetGraphWrapper ) )
return null ;
DatasetGraph dsg2 = ((DatasetGraphWrapper)dsg).getWrapped() ;
return QueryEngineRegistry.findFactory(op, dsg2, context).create(op, dsg2, inputBinding, context) ;
}
}