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/**
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* Copyright (C) 2017 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.vaadin.mvp;
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import org.apache.log4j.Logger;
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import org.springframework.context.event.EventListener;
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import eu.etaxonomy.cdm.api.service.IService;
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import eu.etaxonomy.cdm.model.common.CdmBase;
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import eu.etaxonomy.cdm.service.CdmStore;
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import eu.etaxonomy.cdm.vaadin.event.EntityChangeEvent;
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import eu.etaxonomy.vaadin.mvp.event.EditorPreSaveEvent;
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import eu.etaxonomy.vaadin.mvp.event.EditorSaveEvent;
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/**
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* Provides generic save operations of modified cdm entities.
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*
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* @author a.kohlbecker
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* @since Apr 5, 2017
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*
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*/
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public abstract class AbstractCdmEditorPresenter<DTO extends CdmBase, V extends ApplicationView<?>> extends AbstractEditorPresenter<DTO, V> {
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private static final long serialVersionUID = 2218185546277084261L;
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private static final Logger logger = Logger.getLogger(AbstractCdmEditorPresenter.class);
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public AbstractCdmEditorPresenter() {
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super();
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logger.trace(this._toString() + " constructor");
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}
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CdmStore<DTO, IService<DTO>> store ;
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protected CdmStore<DTO, IService<DTO>> getStore() {
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if(store == null){
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store = new CdmStore<>(getRepo(), getService());
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}
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return store;
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}
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/**
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* @return
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*/
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protected abstract IService<DTO> getService();
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@SuppressWarnings("unchecked")
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@Override
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@EventListener // the generic type parameter <DTO> must not be used here otherwise events will not be received
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public void onEditorPreSaveEvent(EditorPreSaveEvent preSaveEvent){
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if(!isFromOwnView(preSaveEvent)){
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return;
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}
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super.onEditorPreSaveEvent(preSaveEvent);
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}
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@SuppressWarnings("unchecked")
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@Override
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@EventListener // the generic type parameter <DTO> must not be used here otherwise events will not be received
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public void onEditorSaveEvent(EditorSaveEvent saveEvent){
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if(!isFromOwnView(saveEvent)){
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return;
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}
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// the bean is now updated with the changes made by the user
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DTO bean = (DTO) saveEvent.getBean();
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bean = handleTransientProperties(bean);
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EntityChangeEvent changeEvent = getStore().saveBean(bean);
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if(changeEvent != null){
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eventBus.publishEvent(changeEvent);
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}
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}
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/**
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* EditorPresneters for beans with transient properties should overwrite this method to
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* update the beanItem with the changes made to the transient properties.
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* <p>
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* This is necessary because Vaadin MethodProperties are readonly when no setter is
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* available. This can be the case with transient properties. Automatic updating
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* of the property during the fieldGroup commit does not work in this case.
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*
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* @deprecated editors should operate on DTOs instead, remove this method if unused.
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*/
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@Deprecated
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protected DTO handleTransientProperties(DTO bean) {
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// no need to handle transient properties in the generic case
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return bean;
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}
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@Override
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protected DTO prepareAsFieldGroupDataSource(DTO bean){
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DTO mergedBean = getStore().mergedBean(bean);
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// DTO mergedBean = bean;
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return mergedBean;
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}
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/**
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* If the bean is contained in the session it is being updated by
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* doing an evict and merge. The fieldGroup is updated with the merged bean.
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*
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* @param bean
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*
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* @return The bean merged to the session or original bean in case a merge was not necessary.
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*/
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private DTO mergedBean(DTO bean) {
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DTO mergedBean = getStore().mergedBean(bean);
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((AbstractPopupEditor<DTO, AbstractCdmEditorPresenter<DTO, V>>)getView()).updateItemDataSource(mergedBean);
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return mergedBean;
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}
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@Override
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protected final void saveBean(DTO bean){
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// blank implementation, since this is not needed in this or any sub class
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// see onEditorSaveEvent() instead
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}
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@Override
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protected final void deleteBean(DTO bean){
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EntityChangeEvent changeEvent = getStore().deleteBean(bean);
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if(changeEvent != null){
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eventBus.publishEvent(changeEvent);
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}
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}
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}
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