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// $Id$
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/**
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* Copyright (C) 2018 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.remoting.cache;
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import java.util.HashSet;
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import java.util.Set;
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import eu.etaxonomy.cdm.api.application.CdmApplicationState;
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import eu.etaxonomy.cdm.api.service.ICommonService;
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import eu.etaxonomy.cdm.api.service.UpdateResult;
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import eu.etaxonomy.cdm.api.service.dto.CdmEntityIdentifier;
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import eu.etaxonomy.cdm.cache.CdmEntityCacheKey;
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import eu.etaxonomy.cdm.cache.CdmTransientEntityCacher;
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import eu.etaxonomy.cdm.model.common.CdmBase;
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/**
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* Note: The methods of this class were originally found in the {@link CdmTransientEntityCacher}.
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* Once that class was moved to cdmlib it was not possible to move these methods, too,
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* because of the current dependency on CdmApplicationState.
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* In future it should be tried to move them also to cdmlib by replacing the
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* {@link CdmApplicationState} dependency e.g. by adding {@link ICommonService} as parameter
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* to the method {@link #load(CdmEntityIdentifier)}
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*
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* @author k.luther
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* @date 15.03.2018
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*/
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public class ConversationalTransientEntityCacher extends CdmTransientEntityCacher {
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public ConversationalTransientEntityCacher(Object sessionOwner) {
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super(sessionOwner);
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}
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private CdmBase load(CdmEntityIdentifier cei) {
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return CdmApplicationState.getCommonService().findWithUpdate(cei.getCdmClass(), cei.getId());
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}
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public UpdateResult load(UpdateResult result, boolean update) {
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// probably a good time to broadcast to other sessions
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Set<CdmBase> updatedObjects = result.getUpdatedObjects();
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if (result.getCdmEntity()!= null){
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updatedObjects.add(result.getCdmEntity());
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}
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Set<CdmBase> reloadedObjects = new HashSet<>();
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Set<CdmEntityIdentifier> updatedCdmIds = result.getUpdatedCdmIds();
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boolean updatedCdmIdsIsEmpty = updatedCdmIds.isEmpty();
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// if the cdm identifier set contains identifiers of objects already
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// present in the updated objects set remove them
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for(CdmBase updatedObject : updatedObjects) {
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if(updatedObject != null) {
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if (exists(new CdmEntityCacheKey<>(updatedObject))){
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CdmEntityIdentifier cdmEntityIdentifier = new CdmEntityIdentifier(updatedObject.getId(), updatedObject.getClass());
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if(!updatedCdmIdsIsEmpty && updatedCdmIds.contains(cdmEntityIdentifier)) {
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updatedCdmIds.remove(cdmEntityIdentifier);
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}
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}
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CdmBase cachedObj = load(updatedObject, update);
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reloadedObjects.add(cachedObj);
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}
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}
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// remote load cdm identifiers of objects which already exist
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// in the cache
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for(CdmEntityIdentifier id : updatedCdmIds) {
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@SuppressWarnings({ "rawtypes", "unchecked" })
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CdmEntityCacheKey<?> cacheKey = new CdmEntityCacheKey(id.getCdmClass(), id.getId());
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if(exists(cacheKey)) {
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reloadedObjects.add(load(id));
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}
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}
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updatedObjects.clear();
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result.addUpdatedObjects(reloadedObjects);
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return result;
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}
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}
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