/*
* ====================
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 2008-2009 Sun Microsystems, Inc. All rights reserved.
*
* The contents of this file are subject to the terms of the Common Development
* and Distribution License("CDDL") (the "License"). You may not use this file
* except in compliance with the License.
*
* You can obtain a copy of the License at
* http://opensource.org/licenses/cddl1.php
* See the License for the specific language governing permissions and limitations
* under the License.
*
* When distributing the Covered Code, include this CDDL Header Notice in each file
* and include the License file at http://opensource.org/licenses/cddl1.php.
* If applicable, add the following below this CDDL Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyrighted [year] [name of copyright owner]"
* ====================
* Portions Copyrighted 2010-2013 ForgeRock AS.
*/
package org.identityconnectors.framework.impl.api.local.operations;
import java.util.HashSet;
import java.util.Set;
import org.identityconnectors.framework.common.objects.ConnectorObject;
import org.identityconnectors.framework.common.objects.ResultsHandler;
import org.identityconnectors.framework.common.objects.SearchResult;
import org.identityconnectors.framework.spi.SearchResultsHandler;
public final class DuplicateFilteringResultsHandler implements SearchResultsHandler {
// =======================================================================
// Fields
// =======================================================================
private final SearchResultsHandler handler;
private final Set<String> visitedUIDs = new HashSet<String>();
private boolean stillHandling;
// =======================================================================
// Constructors
// =======================================================================
/**
* Filter chain for producers.
*
* @param handler
* Producer to filter.
*
*/
public DuplicateFilteringResultsHandler(final SearchResultsHandler handler) {
// there must be a producer..
if (handler == null) {
throw new IllegalArgumentException("Handler must not be null!");
}
this.handler = handler;
}
public boolean handle(ConnectorObject object) {
String uid = object.getUid().getUidValue();
if (!visitedUIDs.add(uid)) {
// we've already seen this - don't pass it
// throw
return true;
}
stillHandling = handler.handle(object);
return stillHandling;
}
public void handleResult(final SearchResult result) {
handler.handleResult(result);
}
public boolean isStillHandling() {
return stillHandling;
}
}