/*
* 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.mem;
import java.util.HashSet ;
import java.util.Iterator ;
import java.util.Set ;
import org.apache.jena.graph.Node ;
import org.apache.jena.graph.Triple ;
import org.apache.jena.util.iterator.ExtendedIterator ;
import org.apache.jena.util.iterator.WrappedIterator ;
public class SetBunch implements TripleBunch
{
protected Set<Triple> elements = new HashSet<>(20);
public SetBunch( TripleBunch b )
{
for (Iterator<Triple> it = b.iterator(); it.hasNext();)
elements.add( it.next() );
}
protected static boolean equalsObjectOK( Triple t )
{
Node o = t.getObject();
return o.isLiteral() ? o.getLiteralDatatype() == null : true;
}
@Override
public boolean contains( Triple t )
{ return elements.contains( t ); }
@Override
public boolean containsBySameValueAs( Triple t )
{ return equalsObjectOK( t ) ? elements.contains( t ) : slowContains( t ); }
protected boolean slowContains( Triple t )
{
for ( Triple element : elements )
{
if ( t.matches( element ) )
{
return true;
}
}
return false;
}
@Override
public int size()
{ return elements.size(); }
@Override
public void add( Triple t )
{ elements.add( t ); }
@Override
public void remove( Triple t )
{ elements.remove( t ); }
@Override
public ExtendedIterator<Triple> iterator( HashCommon.NotifyEmpty container )
{
return iterator();
}
@Override
public ExtendedIterator<Triple> iterator()
{ return WrappedIterator.create( elements.iterator() ); }
}