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%2FSingleSetListener.java;h=54ed69a7471d6c9f8b48ca2b4879c365609d2fe9;hb=HEAD;hp=7da48efa5eb216ef0c03e972333ae19128a731c1;hpb=969bd23cab98a79ca9101af33334000879fb60c5;p=simantics%2Fplatform.git diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/single/SingleSetListener.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/single/SingleSetListener.java index 7da48efa5..54ed69a74 100644 --- a/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/single/SingleSetListener.java +++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/single/SingleSetListener.java @@ -1,64 +1,64 @@ -/******************************************************************************* - * 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.Collection; -import java.util.HashSet; - -import org.simantics.db.Disposable; -import org.simantics.db.procedure.Listener; -import org.simantics.db.procedure.SetListener; - -abstract public class SingleSetListener implements Listener>, SetListener, Disposable { - - private boolean disposed = false; - - private Collection previous = null; - - public void add(T result) {}; - public void remove(T result) {}; - - @Override - public void execute(Collection result) { - - if(result == null) result = new HashSet(); - - if(previous == null) { - - for(T t : result) add(t); - - } 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; - - } - - public void dispose() { - disposed = true; - } - - @Override - public boolean isDisposed() { - return disposed; - } - -} +/******************************************************************************* + * 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.Collection; +import java.util.HashSet; + +import org.simantics.db.Disposable; +import org.simantics.db.procedure.Listener; +import org.simantics.db.procedure.SetListener; + +abstract public class SingleSetListener implements Listener>, SetListener, Disposable { + + private boolean disposed = false; + + private Collection previous = null; + + public void add(T result) {}; + public void remove(T result) {}; + + @Override + public void execute(Collection result) { + + if(result == null) result = new HashSet(); + + if(previous == null) { + + for(T t : result) add(t); + + } 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; + + } + + public void dispose() { + disposed = true; + } + + @Override + public boolean isDisposed() { + return disposed; + } + +}