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org.eclipse.rdf4j.common.iteration.ReducedIteration Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2015 Eclipse RDF4J contributors, Aduna, and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Distribution License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*******************************************************************************/
package org.eclipse.rdf4j.common.iteration;
/**
* Removes consecutive duplicates from the object stream.
*
* @author Arjohn Kampman
*/
public class ReducedIteration extends FilterIteration {
private E previousObject;
public ReducedIteration(Iteration delegate) {
super(delegate);
}
@Override
protected boolean accept(E nextObject) {
if (nextObject.equals(previousObject)) {
return false;
}
else {
previousObject = nextObject;
return true;
}
}
}