/**
* 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 org.apache.jena.graph.Node ;
/** Interface to allocators for blank nodes. */
public interface BlankNodeAllocator
{
/** Allocate based on a non-null label.
* Calling this twice, with the same label will generate equivalent nodes
* but they may not be identicial (i.e they are .equals but may not be ==)
*/
public Node alloc(String label) ;
/** Create a fresh blank node, different from anything generated so far.
* Will not clash with a node allocated by {@link #alloc}
*/
public Node create() ;
/** Reset allocation state - calls to {@link #alloc} or {@link #create} */
public void reset() ;
}