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/**
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* Copyright (C) 2014 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.session;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.List;
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import java.util.Map;
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import java.util.UUID;
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import org.apache.logging.log4j.LogManager;import org.apache.logging.log4j.Logger;
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import eu.etaxonomy.cdm.api.service.IService;
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import eu.etaxonomy.cdm.api.service.UpdateResult;
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import eu.etaxonomy.cdm.cache.CdmTransientEntityCacher;
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//import eu.etaxonomy.taxeditor.remoting.cache.CdmTransientEntityCacher;
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import eu.etaxonomy.cdm.cache.EntityCacherDebugResult;
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import eu.etaxonomy.cdm.model.common.CdmBase;
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import eu.etaxonomy.cdm.persistence.dao.initializer.IBeanInitializer;
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import eu.etaxonomy.cdm.persistence.dto.MergeResult;
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import eu.etaxonomy.taxeditor.remoting.cache.ConversationalTransientEntityCacher;
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import net.sf.ehcache.statistics.FlatStatistics;
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/**
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* NOTE : It would be nice to have this class performing merge / delete operations
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* using services, but this is only possible if we can 'intelligently'
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* get from a model class to the corresponding service class
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*
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* @author cmathew
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* @date 20 Oct 2014
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*/
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public class CdmEntitySession implements ICdmEntitySession {
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private static final Logger logger = LogManager.getLogger(CdmEntitySession.class);
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private final CdmEntitySessionManager cdmEntitySessionManager;
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private final ICdmEntitySessionEnabled sessionOwner;
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private ConversationalTransientEntityCacher cdmTransientEntityCacher;
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private List<ICdmEntitySessionEnabled> changeObservers;
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public CdmEntitySession(ICdmEntitySessionEnabled sessionOwner, CdmEntitySessionManager cdmEntitySessionManager) {
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this.sessionOwner = sessionOwner;
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this.cdmEntitySessionManager = cdmEntitySessionManager;
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init(sessionOwner, cdmEntitySessionManager);
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}
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private void init(ICdmEntitySessionEnabled sessionOwner, CdmEntitySessionManager cdmEntitySessionManager) {
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this.cdmTransientEntityCacher = new ConversationalTransientEntityCacher(sessionOwner);
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this.changeObservers = new ArrayList<>();
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cdmEntitySessionManager.addToOwnerSessionMap(sessionOwner, this);
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}
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@Override
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public <O extends Object> O load(O obj, boolean update) {
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return cdmTransientEntityCacher.load(obj, update);
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}
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@Override
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public <T extends CdmBase> T load(T cdmBase, boolean update) {
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return cdmTransientEntityCacher.load(cdmBase, update);
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}
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@Override
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public UpdateResult load(UpdateResult updateResult, boolean update) {
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return cdmTransientEntityCacher.load(updateResult, update);
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}
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@Override
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public <T extends CdmBase> MergeResult<T> load(MergeResult<T> mergeResult, boolean update) {
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return cdmTransientEntityCacher.load(mergeResult, update);
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}
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@Override
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public <T extends CdmBase> void update() {
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Collection<T> rootEntities = getRootEntities();
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if(rootEntities != null) {
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for(T rootEntity : rootEntities) {
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load(rootEntity, true);
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}
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}
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}
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// @Override
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// public <T extends ICdmBase> void update(T cdmBase, Set<CdmBase> affectedObjects) {
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// addEvent(cdmBase, affectedObjects, EventType.UPDATE);
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// }
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//
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// @Override
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// public <T extends ICdmBase> void update(T cdmBase, CdmBase affectedObject) {
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// Set<CdmBase> set = new HashSet<CdmBase>();
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// set.add(affectedObject);
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// addEvent(cdmBase, set, EventType.UPDATE);
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// }
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//
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//
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// @Override
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// public <T extends ICdmBase> void delete(T cdmBase, Set<CdmBase> affectedObjects) {
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// addEvent(cdmBase, affectedObjects, EventType.DELETE);
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// }
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//
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// @Override
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// public <T extends ICdmBase> void delete(Set<T> cdmBases, Set<CdmBase> affectedObjects) {
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// addEvent(cdmBases, affectedObjects, EventType.DELETE);
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// }
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@Override
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public <T extends CdmBase> EntityCacherDebugResult debug(T cdmBase) {
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return debug(Arrays.asList(cdmBase), true);
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}
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@Override
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public <T extends CdmBase> EntityCacherDebugResult debug(Collection<T> rootEntities, boolean includeIgnored) {
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EntityCacherDebugResult entityCacherDebugResult =
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new EntityCacherDebugResult(cdmTransientEntityCacher, rootEntities, includeIgnored);
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return entityCacherDebugResult;
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}
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@Override
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public <T extends CdmBase> EntityCacherDebugResult debug(boolean includeIgnored) {
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return debug(getRootEntities(), includeIgnored);
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}
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@Override
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public <T extends CdmBase> Collection<T> load(Collection<T> cdmBaseList, boolean update) {
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return cdmTransientEntityCacher.load(cdmBaseList, update);
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}
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@Override
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public void setEntitiesAsLatest() {
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//FIXME:Remoting need to think more about whether we really need this
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// List<CdmBase> entities = cdmTransientEntityCacher.getAllEntities();
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// for(CdmBase entity : entities) {
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// cdmEntitySessionManager.setEntityAsLatest(entity);
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// }
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}
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@Override
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public void bind() {
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logger.info("Binding session with owner " + sessionOwner.toString());
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if(!cdmEntitySessionManager.contains(sessionOwner)) {
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init(sessionOwner, cdmEntitySessionManager);
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}
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cdmEntitySessionManager.bind(sessionOwner);
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}
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@Override
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public void dispose() {
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cdmTransientEntityCacher.dispose();
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changeObservers.clear();
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cdmEntitySessionManager.remove(sessionOwner);
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}
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// @Override
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// public void addEvent(ICdmBase cdmBase, Set<CdmBase> affectedObjects, EventType eventType) {
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// affectedObjects = (Set<CdmBase>) load(affectedObjects, true);
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// CdmDataChangeEvent cdce = CdmDataChangeEvent.NewInstance((CdmBase)cdmBase, affectedObjects, eventType);
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// CdmPostDataChangeObservableListener.getDefault().notifyObservers(cdce);
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// }
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/**
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* Returns a persisted entity specified by the <code>uuid</code>
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* or null if the entity does not exist,
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* loads it to the entityCacher
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*
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* @param service
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* @param uuid
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*
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* @return
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*/
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@Override
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public <T extends CdmBase> T remoteLoad(IService<T> service, UUID uuid) {
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T cdmBase = service.load(uuid);
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return load(cdmBase, false);
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}
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/**
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* Returns the cdm entity specified by the <code>uuid</code>,
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* recursively initializes all bean properties given in the
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* <code>propertyPaths</code> parameter,
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* the loaded entity is also loaded to the entityCache
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* <p>
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* For detailed description and examples <b>please refer to:</b>
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* {@link IBeanInitializer#initialize(Object, List)}
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*
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* @param service
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* @param uuid
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* @param propertyPath
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*
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* @return
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*/
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@Override
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public <T extends CdmBase> T remoteLoad(IService<T> service, UUID uuid, List<String> propertyPaths) {
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T cdmBase = service.load(uuid, propertyPaths);
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return load(cdmBase, false);
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}
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@Override
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public <T extends CdmBase> UUID remoteSave(IService<T> service, T cdmBase) {
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UUID uuid = service.save(cdmBase).getUuid();
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load(cdmBase,false);
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return uuid;
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}
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@Override
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public <T extends CdmBase> T remoteUpdate(IService<T> service, T cdmBase) {
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T mergedCdmBase = service.merge(cdmBase, true).getMergedEntity();
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return mergedCdmBase;
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}
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@Override
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public boolean isActive() {
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return cdmEntitySessionManager.getActiveSession() == this;
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}
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@Override
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public ICdmEntitySessionEnabled getOwner() {
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return sessionOwner;
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}
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@Override
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public FlatStatistics getCacheStatistics() {
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return cdmTransientEntityCacher.getCacheStatistics();
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}
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@Override
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public <T extends CdmBase> Collection<T> getRootEntities() {
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return sessionOwner.getRootEntities();
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}
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public CdmTransientEntityCacher getCacher() {
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return cdmTransientEntityCacher;
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}
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@Override
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public List<String> getPropertyPaths(Object obj) {
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Map<Object, List<String>> propertyPathsMap = sessionOwner.getPropertyPathsMap();
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if(propertyPathsMap == null || propertyPathsMap.isEmpty()) {
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return null;
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}
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return propertyPathsMap.get(obj);
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}
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//this method is called by DefaultNewEntityListener whenever
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//a new entity is created (constructor call) while the current
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//session is active
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@Override
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public void addNewCdmEntity(CdmBase newEntity) {
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cdmTransientEntityCacher.load(newEntity);
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}
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}
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