我正在研究Jspresso框架(使用Swing启动项目(。我已经在组件之间建立了 N-N 个双向关系,但与这些关系对应的字段没有出现。 例如,我在项目和学生之间有关系(一个学生可以有很多项目,一个项目可以有很多学生(。当我添加项目并在其详细信息视图中打开它时,我可以创建一个新学生并将其添加到项目中,但我无法将现有学生添加到项目中,也无法根据搜索视图中的学生搜索项目。 有没有办法显示这个?
这是我的观点。
// Implement your views here using the SJS DSL.
form('Project.pane',
parent:'decoratedView',
labelsPosition:'ASIDE',
columnCount:2,
fields: ['name','students','technologies','usesTrainers','technicalTrainers']){
actionMap{
actionList('FILE'){
action(ref:'saveModuleObjectFrontAction')
action(ref:'reloadModuleObjectFrontAction')
}
}
}
table'Project-students.table',
parent:'decoratedView',
actionMap:'masterDetailActionMap'
split_vertical'Project.proj.view',
model:'Project',
top:'Project.pane',
bottom:'Project-students.table'
form('Student.pane',
parent:'decoratedView',
labelsPosition:'ASIDE',
columnCount:2){
actionMap{
actionList('FILE'){
action(ref:'saveModuleObjectFrontAction')
action(ref:'reloadModuleObjectFrontAction')
}
}
}
table'Student-technologies.table',
parent:'decoratedView',
actionMap:'masterDetailActionMap'
split_vertical'Student.proj.view',
model:'Student',
top:'Student.pane',
bottom:'Student-technologies.table'
form('Trainer.pane',
parent:'decoratedView',
labelsPosition:'ASIDE',
columnCount:5)
form('Technology.pane',
parent:'decoratedView',
labelsPosition:'ASIDE',
columnCount:5)
这是我的模型。
// Implement your domain here using the SJS DSL.
Interface('Traceable',
interceptors: 'TraceableLifecycleInterceptor',
uncloned: ['createTimestamp',
'lastUpdateTimestamp','lastUpdatedBy','createdBy']) {
string_64 'createdBy',readOnly:true
date_time 'createTimestamp', timeZoneAware: true, readOnly: true
string_64 'lastUpdatedBy', readOnly:true
date_time 'lastUpdateTimestamp', timeZoneAware: true, readOnly: true
}
Entity ('Project', extend:'Traceable',toString:'name',
icon:'project.png',
rendered: ['name','lastUpdateTimestamp','lastUpdatedBy','createTimestamp','createdBy'],
queryable: ['name']){
string_64 'name'
set 'technologies', composition:true, ref:'Technology'
set 'technicalTrainers', composition:true, ref:'Trainer'
set 'usesTrainers', composition:true, ref:'Trainer'
set 'students', composition:true, ref:'Student'
}
Entity ('Technology', extend:'Traceable',toString:'name',
icon:'technology.png',
rendered: ['name','lastUpdateTimestamp','lastUpdatedBy','createTimestamp','createdBy'],
queryable: ['name']){
string_64 'name'
set 'projects', ref:'Project', reverse:'Project-technologies'
set 'studentsAbleToUseIt', ref:'Technology', reverse:'Student-technologies'
set 'trainersAbleToTeachIt', ref:'Technology', reverse:'Trainer-technologies'
}
Interface ('Person', extend:'Traceable'){
string_64 'lastname'
string_64 'firstname'
date_time 'createTimestamp', timeZoneAware: true, readOnly: true
date_time 'lastUpdateTimestamp', timeZoneAware: true, readOnly: true
}
Entity ('Trainer',
extend: 'Person',
toString:'firstname',
icon:'trainer.png',
rendered: ['firstname','lastname','lastUpdateTimestamp','lastUpdatedBy','createTimestamp','createdBy'],
queryable: ['firstname','lastname']){
set 'projectsAsTechnicalTrainer', ref:'Project', reverse:'Project-technicalTrainers'
set 'projectsAsUsesTrainer', ref:'Project', reverse:'Project-usesTrainers'
set 'technologies', composition:true, ref:'Technology'
date_time 'createTimestamp', timeZoneAware: true, readOnly: true
date_time 'lastUpdateTimestamp', timeZoneAware: true, readOnly: true
}
Entity ('Student',
extend: 'Person',
toString:'firstname',
icon:'student.png',
rendered: ['firstname','lastname','lastUpdateTimestamp','lastUpdatedBy','createTimestamp','createdBy'],
queryable: ['firstname','lastname']){
set 'technologies', composition:true, ref:'Technology'
set 'projects', ref:'Project', reverse:'Project-students'
date_time 'createTimestamp', timeZoneAware: true, readOnly: true
date_time 'lastUpdateTimestamp', timeZoneAware: true, readOnly: true
}
您绝对可以轻松实现这两个目标。
1/N-N
关系可以简单地看作两种1-N
关系。因此,您可以在面向Project
的视图上使用Project-students
关系,在面向学生的视图上使用Student-projects
。您可以使用 2 个不同的过滤器模块(一个在Project
上,一个在Student
上(,也可以补充您的Project.proj.view
,以便通过添加一个额外的表格来添加第二级细节,该表格将在第一个表格详细信息中显示所选学生的Student-projects
。
像这样:
split_vertical ('Project.proj.view',
model:'Project',
top:'Project.pane') {
bottom {
split_horizontal(
left: 'Project-students.table',
right: 'Student-projects.table',
cascadingModels: true
)
}
}
2/关于选择现有Project
或Student
并将其添加到相应集合的能力,您可以使用自定义 LOV 操作,如 Jspresso-CE 参考文档的第一章中所述。
像这样:
table('Project-students.table') {
actionMap {
actionList('EDIT'){
action(parent:'lovAction',
custom:[
autoquery:false,
entityDescriptor_ref:'Student',
okAction_ref:'addAnyToMasterFrontAction'
]
)
action(ref:'removeAnyCollectionFromMasterFrontAction')
}
}
}
3/对于按Student
(或相反(过滤Project
,Jspresso 支持将集合属性定义为过滤器属性。在这种情况下,筛选器视图将为学生安装一个 LOV 以筛选项目。
如果要在每个项目筛选器视图上默认使用它,请直接在模型上声明它。
像这样:
Entity ('Project'
...
queryable : ['name', 'students']
...){
...
}