orderby attribute in repository_user.xml not always respected
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Key: OJB-75
URL: http://issues.apache.org/jira/browse/OJB-75
Project: OJB
Type: Bug
Components: PB-API
Versions: 1.0.3
Environment: All
Reporter: Al Lofus
We have an object mapping defined that contains a collection-descriptor. That
collection-descriptor uses an orderby attribute and an indirection table, as
follows:
<class-descriptor class="com.dchoc.common.entity.LeagueEntity" table="LEAGUES">
<field-descriptor id="1" name="id" column="ID" jdbc-type="INTEGER"
primarykey="true" autoincrement="true"/>
<field-descriptor id="2" name="name" column="NAME" jdbc-type="VARCHAR"/>
<collection-descriptor
name="members"
auto-retrieve="true"
auto-update="object"
auto-delete="object"
proxy="true"
indirection-table="LEAGUE_MEMBERS"
orderby="leagueSequence"
element-class-ref="com.dchoc.common.entity.LeagueAccountEntity">
<fk-pointing-to-this-class column="LEAGUE_ID"/>
<fk-pointing-to-element-class column="LEAGUE_ACCOUNT_ID"/>
</collection-descriptor>
</class-descriptor>
We were having problems where sometimes the objects returned in the members
collection were ordered by the leagueSequence, and sometimes they weren't. From
our testing, we determined that the objects in the members collection were
ordered by leagueSequence when the LeagueEntity objects were obtained via a
call to PersistenceBroker.getObjectByQuery(Query). When the LeagueEntity
objects were obtained via a call to
PersistenceBroker.getCollectionByQuery(Query), the objects in the members
collection were *not* ordered by leagueSequence (they were ordered by a default
order of ID/primary key). We turned on the SQL generation for OJB and verified
that in the former case, the SQL select statement includes an order by clause,
and in the latter case, it does not.
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