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[JBoss-dev] [ jboss-Bugs-576410 ] JBossQL ordered queries and Sets broken?
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From: SourceForge.net <no...@so...> - 2003-05-22 10:10:23
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Bugs item #576410, was opened at 2002-07-02 17:43 Message generated for change (Comment added) made by loubyansky You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=376685&aid=576410&group_id=22866 Category: JBossCMP Group: v3.0 Rabbit Hole Status: Open Resolution: Postponed Priority: 5 Submitted By: Stephen Coy (scoy) Assigned to: Alexey Loubyansky (loubyansky) Summary: JBossQL ordered queries and Sets broken? Initial Comment: If I declare an ejbSelect method: public abstract Set ejbSelectUserLists(UserLocal user) throws javax.ejb.FinderException; and override the ejb-ql with JBossQL in jbosscmp-jdbc.xml like: <query> <query-method> <method-name>ejbSelectUserLists</method-name> <method-params> <method-param>com.whitesmiths.sacha.ejb.auth.interfaces.UserLocal</method-param> </method-params> </query-method> <jboss-ql>SELECT DISTINCT rs.role.worklist FROM User AS u, IN (u.userRoleSeqs) AS rs WHERE rs.role.worklist IS NOT NULL AND u = ?1 ORDER BY rs.role.worklist.precedence ASC</jboss-ql> </query> with an ORDER BY clause, then the ordering of the collection is lost when it gets stuffed into a HashSet for return to the caller. I think the relevant code is around line 86 in org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCSelectorBridge. I don't know what the pros/cons are of using a java.util.TreeSet are for this purpose, especially since it is clearly overkill when ordering is not requested. This is easily resolvable by using DISTINCT in the query and returning a Collection for the time being, so the solution may be to simply document it this way. CVS branch: Branch_3_0 ---------------------------------------------------------------------- >Comment By: Alexey Loubyansky (loubyansky) Date: 2003-05-22 13:10 Message: Logged In: YES user_id=543482 Implementation proposed by Kevin Conner. ---------------------------------------------------------------------- Comment By: Alexey Loubyansky (loubyansky) Date: 2002-09-27 08:31 Message: Logged In: YES user_id=543482 Dain, I take it. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=376685&aid=576410&group_id=22866 |