/**
* 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.riot.lang ;
import java.util.concurrent.atomic.AtomicLong ;
import org.apache.jena.riot.SysRIOT ;
import org.apache.jena.riot.out.NodeFmtLib ;
import org.apache.jena.riot.out.NodeToLabel ;
import com.hp.hpl.jena.graph.Node ;
import com.hp.hpl.jena.graph.NodeFactory ;
import com.hp.hpl.jena.rdf.model.AnonId ;
/**
* Allocate blank nodes according to the label given.
* This alloctor reconstructs labels made by
* {@linkplain NodeToLabel#createBNodeByLabelEncoded()}
*/
public class BlankNodeAllocatorLabelEncoded implements BlankNodeAllocator {
private AtomicLong counter = new AtomicLong(0) ;
public BlankNodeAllocatorLabelEncoded() {}
@Override
public void reset() {}
@Override
public Node alloc(String label) {
return NodeFactory.createAnon(new AnonId(NodeFmtLib.decodeBNodeLabel(label))) ;
}
@Override
public Node create() {
String label = SysRIOT.BNodeGenIdPrefix + (counter.getAndIncrement()) ;
return NodeFactory.createAnon(new AnonId(label)) ;
}
}