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question asked: Aug 01 '08, 6:43 a.m.
question was seen: 5,001 times
last updated: Aug 01 '08, 6:43 a.m.

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How to use query model on helper items

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Vibha Sinha (164●36●10) | asked Aug 01 '08, 6:43 a.m.
Hi,

I am extending the Jazz provided repository with my own data model.

I need to query on certain attributes which have been marked as queryable in a helper data item. However, how do I initialize the QueryModel in such a case.

For SimpleTypes, I have been using:
<Item>QueryModel.<Item>QueryModel.ROOT

However, in the query model generated for helper items, I do not get the ROOT attribute

Thanks
- Vibha

3 answers

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Matt Lavin (2.7k●2) | answered Aug 01 '08, 7:38 a.m.
FORUM MODERATOR / JAZZ DEVELOPER
'Helper' models are, by definition, not root level Items. You can only
store a Helper model by attaching it to an Item, and you can only query
for it by starting at an <Item>QueryModel.ROOT and traversing a
queryable path to the helper.

vssinha wrote:
Hi,

I am extending the Jazz provided repository with my own data model.

I need to query on certain attributes which have been marked as
queryable in a helper data item. However, how do I initialize the
QueryModel in such a case.

For SimpleTypes, I have been using:
Item>QueryModel.<Item>QueryModel.ROOT

However, in the query model generated for helper items, I do not get
the ROOT attribute

Thanks
- Vibha
0
permanent link
Vibha Sinha (164●36●10) | answered Aug 01 '08, 10:27 a.m.
Hi

Pardon my ignorance, but would it be possible to get an example of how to traverse a queryable path to the helper ?

Thanks
0
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Balaji Krish (1.8k●1●2) | answered Aug 01 '08, 11:04 a.m.
JAZZ DEVELOPER
If ItemA has a HelperB that has a queryable attribute c, you can do the
following (Note that you can traverse a helper only from an item that owns
it)..

ItemAQueryModel x = ItemAQueryModel.ROOT;
IItemQuery q = IItemQuery.FACTORY.newInstance(x);
q.filter(x.helperB().attributeC()._eq(.....)

------- Balaji

"vssinha" <vibha> wrote in message
news:g6v6hg$aeu$1@localhost.localdomain...
Hi

Pardon my ignorance, but would it be possible to get an example of how
to traverse a queryable path to the helper ?

Thanks

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