Re: API question, replacement for QueryByCriteria(Object)

Hi Antoine,

Antoine Levy-Lambert wrote:
> Hi,
> 
> I am a slide developer (jakarta slide). I am concerned because jakarta 
> slide build fails in Gump.
> 
> One of the errors is due to the following line in 
> org.apache.slide.store.ojb.property.ElementListPropertyHandler [1] :
> 
>                     QueryByCriteria query = new 
> QueryByCriteria(propertyPeer);
> 
>  From the log of the org.apache.ojb.broker.query.QueryByCriteria class 
> (or now interface) [2], the constructor used above was removed 2 years 
> and 5 months ago. [3]

OJB trunk is unstable OJB 2.x (Criteria api based on interfaces). The 
OJB_1_0_RELEASE branch is the stable upcoming OJB 1.0.5.

> 
> slide ships with db-ojb version 1.0.1 (yes, this is old).
> 
> Could someone kindly suggest how to rewrite the construct above using 
> the current ojb API ?

based on latest from OJB_1_0_RELEASE branch (1.0.5):

// build query out of all non-null fields
Query query = QueryFactory.newQueryByExample(template);
or
// build query based on object identity (all PK's, other fields will be 
ignored)
Query query = QueryFactory.newQuery(template);
or
// use findByIdentity, similar to QueryFactory.newQuery(template)
Identity oid = broker.serviceIdentity().buildIdentity( 
PropertyPeer.class, new Long(propertyPeer.getPropertyId()));
propertyPeer = (PropertyPeer) broker.getObjectByIdentity(oid);

(all examples should work with TRUNK sources too)

By the way, why do you lookup the PropertyPeer object immediately after 
store?

regards,
Armin

> 
> Then I could fix gump, and make slide build against the latest db-ojb.
> 
> Thanks very much,
> 
> Antoine
> 
> 
> 
> 
> [1] 
> http://svn.apache.org/viewvc/jakarta/slide/trunk/src/stores/org/apache/slide/store/ojb/property/ElementListPropertyHandler.java?revision=208458&view=markup 
> 
> [2] 
> http://svn.apache.org/viewvc/db/ojb/trunk/src/java/org/apache/ojb/broker/query/QueryByCriteria.java?view=log 
> 
> [3]
> Revision 364071 - (view) (download) (annotate) - [select for diffs]
> Modified Fri Aug 27 19:55:43 2004 UTC (2 years, 5 months ago) by brj
> File length: 15700 byte(s)
> Diff to previous 363951 (colored)
> better handling for QueryByExample. criteria is built during runtime.
> constructor QueryByCriteria(Object anExampleObject) removed !
> 
> 
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