Hi Louis,
Am 07.10.2012 um 07:43 schrieb Louis Demers <[email protected]>:
> Hi,
>
> I have a lot of different hierarchical data ( Bill of Materials or BOM,
> Manifest, Revisions ...) So I wanted to write a generic Hierarchy component
> that would iterate through the relationships to build the hierarchy. I would
> then reuse this component, properly configured with keypaths and simply
> design new display components (BOMCell, RevisionCell, ManifestCell...) for
> each types of data I need to display.
> I assume that ERXComponentContent is the key or at least part of the solution
>
> <wo:Hierarchy rootObject="$ro">
> <wo:BOMCell />
> </wo:Hierarchy>
>
> <wo:Hierarchy rootObject="$ro">
> <wo:RevisionCell />
> </wo:Hierarchy>
>
> etc.
>
>
> In my Hierarchy.wo I have
>
> <wo:loop list="$children" item= "$aChild">
> <wo:ERXWOComponentContent />
> </wo:loop>
>
> Or even have it recurse down the tree...
>
> <wo:loop list="$children" item= "$aChild">
> <wo:Hierarchy rootObject="$aChild">
> <wo:ERXWOComponentContent />
> </ wo:Hierarchy>
> </wo:loop>
>
>
> I imagine my BOMCell would look like
>
> <div>
> [
> <wo:string value="$^aChild" />
That would only work if BOMCell had a binding "aChild" (besides being
non-synchronizing or stateless) which it doesn't.
You could create an interface for the hierarchy class, lets say
IRootObjectProvider and call parent() in your BOMCell checking for that
interface and if the parent component does implement it get the object to work
with (otherwise probably throw an exception or just do nothing).
public class Hierarchy extends ERXComponent implements IRootObjectProvider {
public EOEnterpriseObject rootObject;
…
public EOEnterpriseObject rootObject() {
return rootObject;
}
}
public class BOMCell extends ERXStatelessComponent {
…
public EOEnterpriseObject rootObject() {
WOComponent parent = parent();
if (parent instance of IRootObjectProvider) {
return ((IRootObjectProvider)parent). rootObject();
}
return null;
}
}
> ]
> </div>
>
> I've looked through similar components in Wonder and I can't seem to get it
> to work. My problem seems to be that my BOMCell component never gets to the
> node data...
>
> I also investigated making Hierarchy a ERXDynamicComponent without success,
> but I suspect that too would be a clean way of doing it.
>
> Thanks for any clues...
>
>
> Louis Demers eng.
> www.obzerv.com
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