|
1
|
/**
|
|
2
|
* Copyright (C) 2017 EDIT
|
|
3
|
* European Distributed Institute of Taxonomy
|
|
4
|
* http://www.e-taxonomy.eu
|
|
5
|
*
|
|
6
|
* The contents of this file are subject to the Mozilla Public License Version 1.1
|
|
7
|
* See LICENSE.TXT at the top of this package for the full license terms.
|
|
8
|
*/
|
|
9
|
package eu.etaxonomy.vaadin.mvp;
|
|
10
|
|
|
11
|
import org.apache.log4j.Logger;
|
|
12
|
import org.hibernate.Session;
|
|
13
|
import org.springframework.context.event.EventListener;
|
|
14
|
import org.springframework.transaction.TransactionStatus;
|
|
15
|
|
|
16
|
import eu.etaxonomy.cdm.api.service.IService;
|
|
17
|
import eu.etaxonomy.cdm.model.common.CdmBase;
|
|
18
|
import eu.etaxonomy.cdm.service.CdmStore;
|
|
19
|
import eu.etaxonomy.cdm.vaadin.event.EntityChangeEvent;
|
|
20
|
import eu.etaxonomy.vaadin.mvp.event.EditorPreSaveEvent;
|
|
21
|
import eu.etaxonomy.vaadin.mvp.event.EditorSaveEvent;
|
|
22
|
|
|
23
|
/**
|
|
24
|
* Provides generic save operations of modified cdm entities.
|
|
25
|
*
|
|
26
|
* @author a.kohlbecker
|
|
27
|
* @since Apr 5, 2017
|
|
28
|
*
|
|
29
|
*/
|
|
30
|
public abstract class AbstractCdmEditorPresenter<DTO extends CdmBase, V extends ApplicationView<?>> extends AbstractEditorPresenter<DTO, V> {
|
|
31
|
|
|
32
|
private static final long serialVersionUID = 2218185546277084261L;
|
|
33
|
|
|
34
|
private static final Logger logger = Logger.getLogger(AbstractCdmEditorPresenter.class);
|
|
35
|
|
|
36
|
TransactionStatus tx = null;
|
|
37
|
|
|
38
|
Session session = null;
|
|
39
|
|
|
40
|
CdmStore<DTO, IService<DTO>> store ;
|
|
41
|
|
|
42
|
public AbstractCdmEditorPresenter() {
|
|
43
|
super();
|
|
44
|
logger.trace(this._toString() + " constructor");
|
|
45
|
}
|
|
46
|
|
|
47
|
protected CdmStore<DTO, IService<DTO>> getStore() {
|
|
48
|
if(store == null){
|
|
49
|
store = new CdmStore<>(getRepo(), getService());
|
|
50
|
}
|
|
51
|
return store;
|
|
52
|
}
|
|
53
|
|
|
54
|
|
|
55
|
/**
|
|
56
|
* @return
|
|
57
|
*/
|
|
58
|
protected abstract IService<DTO> getService();
|
|
59
|
|
|
60
|
@SuppressWarnings("unchecked")
|
|
61
|
@Override
|
|
62
|
@EventListener // the generic type parameter <DTO> must not be used here otherwise events will not be received
|
|
63
|
public void onEditorPreSaveEvent(EditorPreSaveEvent preSaveEvent){
|
|
64
|
if(!isFromOwnView(preSaveEvent)){
|
|
65
|
return;
|
|
66
|
}
|
|
67
|
|
|
68
|
session = getSession();
|
|
69
|
logger.trace(this._toString() + ".onEditorPreSaveEvent - session: " + session);
|
|
70
|
logger.trace(this._toString() + ".onEditorPreSaveEvent - starting transaction");
|
|
71
|
tx = getStore().startTransaction();
|
|
72
|
// merge the bean and update the fieldGroup with the merged bean, so that updating
|
|
73
|
// of field values in turn of the commit are can not cause LazyInitializationExeptions
|
|
74
|
// the bean still has the original values at this point
|
|
75
|
logger.trace(this._toString() + ".onEditorPreSaveEvent - merging bean into session");
|
|
76
|
mergedBean((DTO) preSaveEvent.getBean());
|
|
77
|
}
|
|
78
|
|
|
79
|
@SuppressWarnings("unchecked")
|
|
80
|
@Override
|
|
81
|
@EventListener // the generic type parameter <DTO> must not be used here otherwise events will not be received
|
|
82
|
public void onEditorSaveEvent(EditorSaveEvent saveEvent){
|
|
83
|
if(!isFromOwnView(saveEvent)){
|
|
84
|
return;
|
|
85
|
}
|
|
86
|
// the bean is now updated with the changes made by the user
|
|
87
|
DTO bean = (DTO) saveEvent.getBean();
|
|
88
|
bean = handleTransientProperties(bean);
|
|
89
|
EntityChangeEvent changeEvent = getStore().saveBean(bean);
|
|
90
|
if(changeEvent != null){
|
|
91
|
eventBus.publishEvent(changeEvent);
|
|
92
|
}
|
|
93
|
}
|
|
94
|
|
|
95
|
/**
|
|
96
|
* EditorPresneters for beans with transient properties should overwrite this method to
|
|
97
|
* update the beanItem with the changes made to the transient properties.
|
|
98
|
* <p>
|
|
99
|
* This is necessary because Vaadin MethodProperties are readonly when no setter is
|
|
100
|
* available. This can be the case with transient properties. Automatic updating
|
|
101
|
* of the property during the fieldGroup commit does not work in this case.
|
|
102
|
*
|
|
103
|
* @deprecated editors should operate on DTOs instead, remove this method if unused.
|
|
104
|
*/
|
|
105
|
@Deprecated
|
|
106
|
protected DTO handleTransientProperties(DTO bean) {
|
|
107
|
// no need to handle transient properties in the generic case
|
|
108
|
return bean;
|
|
109
|
}
|
|
110
|
|
|
111
|
/**
|
|
112
|
* If the bean is contained in the session it is being updated by
|
|
113
|
* doing an evict and merge. The fieldGroup is updated with the merged bean.
|
|
114
|
*
|
|
115
|
* @param bean
|
|
116
|
*
|
|
117
|
* @return The bean merged to the session or original bean in case a merge was not necessary.
|
|
118
|
*/
|
|
119
|
private DTO mergedBean(DTO bean) {
|
|
120
|
DTO mergedBean = getStore().mergedBean(bean);
|
|
121
|
((AbstractPopupEditor<DTO, AbstractCdmEditorPresenter<DTO, V>>)getView()).updateItemDataSource(mergedBean);
|
|
122
|
return mergedBean;
|
|
123
|
|
|
124
|
}
|
|
125
|
|
|
126
|
@Override
|
|
127
|
protected final void saveBean(DTO bean){
|
|
128
|
// blank implementation, since this is not needed in this or any sub class
|
|
129
|
// see onEditorSaveEvent() instead
|
|
130
|
}
|
|
131
|
|
|
132
|
@Override
|
|
133
|
protected final void deleteBean(DTO bean){
|
|
134
|
EntityChangeEvent changeEvent = getStore().deleteBean(bean);
|
|
135
|
if(changeEvent != null){
|
|
136
|
eventBus.publishEvent(changeEvent);
|
|
137
|
}
|
|
138
|
|
|
139
|
}
|
|
140
|
|
|
141
|
}
|