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/**
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* Copyright (C) 2007 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.taxeditor.navigation.navigator;
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import java.util.HashSet;
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import java.util.Set;
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import org.eclipse.core.runtime.IProgressMonitor;
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import org.eclipse.core.runtime.IStatus;
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import org.eclipse.core.runtime.Status;
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import org.eclipse.core.runtime.jobs.Job;
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import org.eclipse.swt.widgets.Display;
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import org.eclipse.ui.IEditorPart;
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import eu.etaxonomy.cdm.hibernate.HibernateProxyHelper;
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import eu.etaxonomy.cdm.model.common.CdmBase;
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import eu.etaxonomy.cdm.model.name.TaxonNameBase;
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import eu.etaxonomy.cdm.model.taxon.ITaxonTreeNode;
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import eu.etaxonomy.cdm.model.taxon.Taxon;
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import eu.etaxonomy.cdm.persistence.hibernate.CdmDataChangeEvent;
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import eu.etaxonomy.cdm.persistence.hibernate.CdmDataChangeEvent.EventType;
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import eu.etaxonomy.cdm.persistence.hibernate.CdmDataChangeMap;
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import eu.etaxonomy.taxeditor.model.AbstractDataChangeBehaviour;
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import eu.etaxonomy.taxeditor.model.IDataChangeBehavior;
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import eu.etaxonomy.taxeditor.navigation.NavigationUtil;
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/**
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* <p>TaxonNavigatorDataChangeBehavior class.</p>
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*
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* @author n.hoffmann
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* @created 01.04.2009
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* @version 1.0
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*/
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public class TaxonNavigatorDataChangeBehavior extends AbstractDataChangeBehaviour implements
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IDataChangeBehavior {
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private final TaxonNavigator source;
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private Set<CdmBase> staleObjects;
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/**
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* <p>Constructor for TaxonNavigatorDataChangeBehavior.</p>
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*
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* @param taxonNavigator a {@link eu.etaxonomy.taxeditor.navigation.navigator.TaxonNavigator} object.
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*/
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public TaxonNavigatorDataChangeBehavior(TaxonNavigator taxonNavigator) {
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source = taxonNavigator;
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}
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/* (non-Javadoc)
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* @see eu.etaxonomy.taxeditor.store.model.IDataChangeBehavior#isRelevant(java.lang.Object, eu.etaxonomy.cdm.persistence.hibernate.CdmCrudEvent)
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*/
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/**
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* <p>isRelevant</p>
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*
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* @param events a {@link eu.etaxonomy.cdm.persistence.hibernate.CdmDataChangeMap} object.
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* @return a boolean.
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*/
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public boolean isRelevant(CdmDataChangeMap events) {
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// TODO react only on insert/update/delete of taxon and synonym objects
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// and on update of name objects
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boolean relevant = false;
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staleObjects = new HashSet<CdmBase>();
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for(CdmDataChangeEvent event : events.getAllEvents()){
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EventType eventType = event.getEventType();
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CdmBase eventEntity = event.getEntity();
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Set<CdmBase> affectedObjects = event.getAffectedObjects();
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if(affectedObjects != null) {
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for(CdmBase cb : affectedObjects) {
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staleObjects.add((CdmBase)HibernateProxyHelper.deproxy(cb));
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}
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}
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// all tree node changes are relevant
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if((eventType == EventType.INSERT || eventType == EventType.DELETE || eventType == EventType.UPDATE)
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&& event.getEntity() instanceof ITaxonTreeNode){
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return true;
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}
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// name updates of the accepted taxon of open editors are relevant
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if(eventType == EventType.UPDATE && event.getEntity() instanceof TaxonNameBase){
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TaxonNameBase name = null;
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if(eventEntity instanceof TaxonNameBase){
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name = (TaxonNameBase) eventEntity;
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}else if(eventEntity instanceof Taxon){
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name = ((Taxon) eventEntity).getName();
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}else{
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continue;
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}
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Set<IEditorPart> openEditors = NavigationUtil.getOpenEditors();
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/*for(IEditorPart editor : openEditors){
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if(name.equals(((TaxonEditorInput) editor.getEditorInput()).getTaxon().getName())){
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return true;
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}
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}*/
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}
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if (eventType == EventType.DELETE){
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return true;
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}
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if(eventType == EventType.UPDATE && event.getEntity() instanceof Taxon){
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TaxonNameBase name = null;
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if(eventEntity instanceof Taxon){
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name = ((Taxon) eventEntity).getName();
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}else{
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continue;
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}
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// Set<IEditorPart> openEditors = NavigationUtil.getOpenEditors();
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/*for(IEditorPart editor : openEditors){
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if(name.equals(((TaxonEditorInput) editor.getEditorInput()).getTaxon().getName())){
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return true;
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}
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}*/
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}
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// if(eventType == EventType.UPDATE){
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// relevant = true;
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// CdmBase entity = event.getEntity();
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// if((entity instanceof TaxonNameBase)
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// || (entity instanceof Taxon)
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// || (entity instanceof Synonym)){
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// staleObjects.add(entity);
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// }
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// }
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}
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return false;
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// @deprecated
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// react on everything except load
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// if(events.sizeByEventType(EventType.INSERT) > 0){
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// return true;
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// }else if(events.sizeByEventType(EventType.UPDATE) > 0){
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// return true;
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// }else if(events.sizeByEventType(EventType.DELETE) > 0){
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// return true;
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// }else{
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// return false;
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// }
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}
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/* (non-Javadoc)
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* @see eu.etaxonomy.taxeditor.store.model.IDataChangeBehavior#reactOnDataChange(java.lang.Object, eu.etaxonomy.cdm.persistence.hibernate.CdmCrudEvent)
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*/
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/** {@inheritDoc} */
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@Override
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public void reactOnDataChange(CdmDataChangeMap events) {
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if(isRelevant(events)){
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final Display display = Display.getCurrent();
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Job job = new Job("Updating Taxon Navigator") {
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@Override
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protected IStatus run(IProgressMonitor monitor) {
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monitor.beginTask("Updating Taxon Navigator", 3);
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monitor.worked(1);
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// clear the session completely
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monitor.subTask("Clearing Taxon Navigators session");
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display.asyncExec(new Runnable() {
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@Override
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public void run() {
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source.getConversationHolder().clear();
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}
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});
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// FIXME completely clearing the session is a brute force approach.
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// It would be much more elegant to clear only those elements that have been changed.
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// I could not get that to work but we should consider workin on this because we might
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// run into serious performance issues, especially when it comes to large trees
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//
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// at least, we moved this to a job so it can run in a background thred
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// seems to improve the situation but not sure if final solution
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monitor.worked(1);
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monitor.subTask("Refreshing viewer");
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display.asyncExec(new Runnable() {
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@Override
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public void run() {
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if(staleObjects != null && staleObjects.size() > 0) {
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source.refresh(staleObjects);
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} else {
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source.refresh();
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}
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}
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});
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monitor.worked(1);
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monitor.done();
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return Status.OK_STATUS;
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}
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};
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job.setPriority(Job.SHORT);
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job.schedule();
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}
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}
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}
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