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https://issues.apache.org/jira/browse/ISIS-648?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dan Haywood updated ISIS-648:
-----------------------------
Description:
As originally described in http://markmail.org/message/7uqgptkwkspai276
~~~
The requirement is to be able to:
a) provide the ability for some actions to be bulk-only
b) provide a mechanism so that all objects selected to have a bulk action upon
be able to interact with each other in the context of that action
- for example, to pass information along
c) for the return type of a bulk action to be respected rather than ignore
- because there are many such returns, only the value of the last one
should be acted up
Tackling (a) first, that is an extension to the @Bulk annotation:
@Bulk(BULK_AND_REGULAR) or @Bulk(BULK_ONLY)
For (b), enhance the existing @Bulk.InteractionContext class so that can put or
get user data.
For (c), this is an enhancement to the Wicket viewer
~~~
As a worked example of how to use these capabilties: we want to be able to
update a bunch of objects, which then add themselves to some sort of wizard.
public class ToDoItem {
@Bulk(BULK_ONLY)
public ToDoItemBulkChangeWizard bulkUpdate() {
Bulk.InteractionContext ctxt = Bulk.InteractionContext.get();
ToDoItemBulkChangeWizard wizard =
(ToDoItemBulkChangeWizard)ctxt.getIserData("wizard");
if(wizard == null) {
wizard =
container.newViewModelInstance(ToDoItemBulkChangeWizard.class, new
UUID().toString());
ctxt.setUserData("wizard", wizard);
}
wizard.add(this);
return wizard;
}
}
public class ToDoItemBulkChangeWizard extends AbstractViewModel {
// viewModelInit() and viewModelMemento() omitted
private List<ToDoItem> _items = Lists.newArrayList();
public List<ToDoItem> getItems() { return _items; }
@Programmatic
public void add(ToDoItem item) { _items.add(item); }
public ToDoItemBulkChangeWizard markAllAsCompleted() {
for(ToDoItem item: _items) {
item.complete();
}
}
public ToDoItemBulkChangeWizard markAllAsNotYetCompleted() {
for(ToDoItem item: _items) {
item.notYetComplete();
}
}
}
Note that the wizard above would need to serialize the _sites field somehow.
The BookmarkServiceDefault (serialize each object to its oid string) and the
ViewModelSupportDefault class (serialize a bunch of strings to a single string)
should allow you to do this.
was:
Perhaps as described in http://markmail.org/message/7uqgptkwkspai276
> Improve support for bulk update
> -------------------------------
>
> Key: ISIS-648
> URL: https://issues.apache.org/jira/browse/ISIS-648
> Project: Isis
> Issue Type: New Feature
> Components: Core, Viewer: Wicket
> Affects Versions: viewer-wicket-1.3.1, core-1.3.0
> Reporter: Dan Haywood
> Assignee: Dan Haywood
> Fix For: viewer-wicket-1.4.0, core-1.4.0
>
>
> As originally described in http://markmail.org/message/7uqgptkwkspai276
> ~~~
> The requirement is to be able to:
> a) provide the ability for some actions to be bulk-only
> b) provide a mechanism so that all objects selected to have a bulk action
> upon be able to interact with each other in the context of that action
> - for example, to pass information along
> c) for the return type of a bulk action to be respected rather than ignore
> - because there are many such returns, only the value of the last one
> should be acted up
> Tackling (a) first, that is an extension to the @Bulk annotation:
> @Bulk(BULK_AND_REGULAR) or @Bulk(BULK_ONLY)
> For (b), enhance the existing @Bulk.InteractionContext class so that can put
> or get user data.
> For (c), this is an enhancement to the Wicket viewer
> ~~~
> As a worked example of how to use these capabilties: we want to be able to
> update a bunch of objects, which then add themselves to some sort of wizard.
> public class ToDoItem {
> @Bulk(BULK_ONLY)
> public ToDoItemBulkChangeWizard bulkUpdate() {
> Bulk.InteractionContext ctxt = Bulk.InteractionContext.get();
> ToDoItemBulkChangeWizard wizard =
> (ToDoItemBulkChangeWizard)ctxt.getIserData("wizard");
> if(wizard == null) {
> wizard =
> container.newViewModelInstance(ToDoItemBulkChangeWizard.class, new
> UUID().toString());
> ctxt.setUserData("wizard", wizard);
> }
> wizard.add(this);
> return wizard;
> }
> }
> public class ToDoItemBulkChangeWizard extends AbstractViewModel {
> // viewModelInit() and viewModelMemento() omitted
> private List<ToDoItem> _items = Lists.newArrayList();
> public List<ToDoItem> getItems() { return _items; }
> @Programmatic
> public void add(ToDoItem item) { _items.add(item); }
> public ToDoItemBulkChangeWizard markAllAsCompleted() {
> for(ToDoItem item: _items) {
> item.complete();
> }
> }
> public ToDoItemBulkChangeWizard markAllAsNotYetCompleted() {
> for(ToDoItem item: _items) {
> item.notYetComplete();
> }
> }
> }
> Note that the wizard above would need to serialize the _sites field somehow.
> The BookmarkServiceDefault (serialize each object to its oid string) and the
> ViewModelSupportDefault class (serialize a bunch of strings to a single
> string) should allow you to do this.
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