X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.db.common%2Fsrc%2Forg%2Fsimantics%2Fdb%2Fcommon%2Fprocedure%2Fsingle%2FStagedSingleSetListener.java;h=a1fed6c56bd7761e6c37063478f9468bc19725aa;hb=bc5e6cb19f6af5f67bc5cfaad7d602841b8fdd0b;hp=4c5b0eb009487dde017c46cc5d3651122ecdfc40;hpb=969bd23cab98a79ca9101af33334000879fb60c5;p=simantics%2Fplatform.git diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/single/StagedSingleSetListener.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/single/StagedSingleSetListener.java index 4c5b0eb00..a1fed6c56 100644 --- a/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/single/StagedSingleSetListener.java +++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/single/StagedSingleSetListener.java @@ -1,50 +1,50 @@ -/******************************************************************************* - * Copyright (c) 2007, 2010 Association for Decentralized Information Management - * in Industry THTH ry. - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Eclipse Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/epl-v10.html - * - * Contributors: - * VTT Technical Research Centre of Finland - initial API and implementation - *******************************************************************************/ -package org.simantics.db.common.procedure.single; - -import java.util.HashSet; -import java.util.Set; - -import org.simantics.db.procedure.Listener; - -abstract public class StagedSingleSetListener implements Listener>{ - - private Set previous = null; - - public void start(Set items) {} - public void add(T item) {} - public void remove(T item) {} - - @Override - public synchronized void execute(final Set result) { - - if(previous == null) { - - start(result); - - } else { - - HashSet added = new HashSet(result); - added.removeAll(previous); - HashSet removed = new HashSet(previous); - removed.removeAll(result); - - for(T t : added) add(t); - for(T t : removed) remove(t); - - } - - previous = result; - - } - -} +/******************************************************************************* + * Copyright (c) 2007, 2010 Association for Decentralized Information Management + * in Industry THTH ry. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * VTT Technical Research Centre of Finland - initial API and implementation + *******************************************************************************/ +package org.simantics.db.common.procedure.single; + +import java.util.HashSet; +import java.util.Set; + +import org.simantics.db.procedure.Listener; + +abstract public class StagedSingleSetListener implements Listener>{ + + private Set previous = null; + + public void start(Set items) {} + public void add(T item) {} + public void remove(T item) {} + + @Override + public synchronized void execute(final Set result) { + + if(previous == null) { + + start(result); + + } else { + + HashSet added = new HashSet(result); + added.removeAll(previous); + HashSet removed = new HashSet(previous); + removed.removeAll(result); + + for(T t : added) add(t); + for(T t : removed) remove(t); + + } + + previous = result; + + } + +}