/*
* 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.permissions.model.impl;
import java.util.Iterator;
import java.util.List;
import java.util.NoSuchElementException;
import java.util.Set;
import java.util.function.Function;
import java.util.function.Predicate;
import org.apache.jena.permissions.model.SecuredModel;
import org.apache.jena.permissions.model.SecuredRDFNode;
import org.apache.jena.rdf.model.NodeIterator ;
import org.apache.jena.rdf.model.RDFNode ;
import org.apache.jena.util.iterator.ExtendedIterator ;
/**
* A secured RDFNode iterator implementation
*/
public class SecuredNodeIterator<T extends RDFNode> implements NodeIterator
{
private class PermNodeMap<N extends RDFNode> implements Function<N, RDFNode>
{
private final SecuredModel securedModel;
public PermNodeMap( final SecuredModel securedModel )
{
this.securedModel = securedModel;
}
@Override
public SecuredRDFNode apply( final RDFNode o )
{
return SecuredRDFNodeImpl.getInstance(securedModel, o);
}
}
private final ExtendedIterator<RDFNode> iter;
/**
* Constructor
*
* @param securedItem
* the item defining the security context
* @param wrapped
* the iterator to be wrapped.
*/
SecuredNodeIterator( final SecuredModel securedModel,
final ExtendedIterator<T> wrapped )
{
final PermNodeMap<T> map1 = new PermNodeMap<T>(securedModel);
iter = wrapped.mapWith(map1);
}
@Override
public <X extends RDFNode> ExtendedIterator<RDFNode> andThen(
final Iterator<X> other )
{
return iter.andThen(other);
}
@Override
public void close()
{
iter.close();
}
@Override
public ExtendedIterator<RDFNode> filterDrop( final Predicate<RDFNode> f )
{
return iter.filterDrop(f);
}
@Override
public ExtendedIterator<RDFNode> filterKeep( final Predicate<RDFNode> f )
{
return iter.filterKeep(f);
}
@Override
public boolean hasNext()
{
return iter.hasNext();
}
@Override
public <U> ExtendedIterator<U> mapWith( final Function<RDFNode, U> map1 )
{
return iter.mapWith(map1);
}
@Override
public RDFNode next()
{
return iter.next();
}
@Override
public RDFNode nextNode() throws NoSuchElementException
{
return next();
}
@Override
public void remove()
{
iter.remove();
}
@Override
public RDFNode removeNext()
{
return iter.removeNext();
}
@Override
public List<RDFNode> toList()
{
return iter.toList();
}
@Override
public Set<RDFNode> toSet()
{
return iter.toSet();
}
}