Re: [eclipselink-users] Get Expression from Query By Example Query

[Tim Hollosy <hollosyt@xxxxxxxxx>]

Thanks, just what I was looking for.

./tch



On Tue, Nov 10, 2009 at 9:59 AM, James Sutherland <jamesssss@xxxxxxxxx> wrote:
>
> There is no direct support for QBE on UpdateAllQuerys, but you can build an
> Expression from a QBE query.
>
> Just create the QBE read query, then access the query's
> QueryByExampleMechanism and call buildSelectionCriteria(AbstractSession),
> passing your Session.
>
>
> tch wrote:
>>
>> Is it possible to get an "underlying expression" that represents the
>> expression that an example object on a Query creates, or is this a
>> non-sensical question? The reason I ask is, I'd like to be able to mix
>> Query by Example with an UpdateAllQuery. For example, process a search
>> using query by example, then run an UpdateAllQuery on these same
>> results. I've been able to do this with a ReportQuery -- transfer the
>> Example Object from a Read All Query to a Report Query, which is quite
>> handy and I'd like to do the same thing with an UpdateAllQuery, but it
>> doesn't appear that this is possible with the current API.
>>
>> TIA
>>
>> ./tch
>>
>>
>
>
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