/*
* 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.rdf.model;
import com.hp.hpl.jena.graph.Triple;
import com.hp.hpl.jena.graph.TripleBoundary;
/**
StatementBoundaryBase - a base class for StatementBoundarys, with
built-in converstion to triples and a continueWith as well as a stopAt.
@author kers
*/
public abstract class StatementBoundaryBase implements StatementBoundary
{
/**
Method to over-ride to define what stops the boundary search; default
definition is !continueWith(s). <i>exactly one</code> of these two methods
must be defined.
*/
@Override
public boolean stopAt( Statement s )
{ return !continueWith( s ); }
/**
Method to over-ride to define what continues the boundary search; default
definition is !stopAt(s). <i>exactly one</code> of these two methods
must be defined.
*/
public boolean continueWith( Statement s )
{ return !stopAt( s ); }
/**
Expresses this StatementBoundary as a TripleBoundary.
*/
@Override
public final TripleBoundary asTripleBoundary( Model m )
{ return convert( m, this ); }
/**
Answer a TripleBoundary that is implemented in terms of a StatementBoundary.
*/
public static TripleBoundary convert( final Model s, final StatementBoundary b )
{
return new TripleBoundary()
{ @Override
public boolean stopAt( Triple t ) { return b.stopAt( s.asStatement( t ) ); } };
}
}