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Posted to dev@cayenne.apache.org by "Robert Wruck (JIRA)" <de...@cayenne.apache.org> on 2008/10/05 22:52:11 UTC
[jira] Created: (CAY-1115) Prefetch on SelectQueries doesn't
resolve ToOneFaults
Prefetch on SelectQueries doesn't resolve ToOneFaults
-----------------------------------------------------
Key: CAY-1115
URL: https://issues.apache.org/cayenne/browse/CAY-1115
Project: Cayenne
Issue Type: Bug
Components: Cayenne Core Library
Affects Versions: 1.2 [STABLE]
Environment: 1.2.4 on Linux
Reporter: Robert Wruck
Assignee: Andrus Adamchik
final SelectQuery q = new SelectQuery(MyObject.class);
q.addPrefetch("myRelObject");
final List l = dataContext.performQuery(q);
For each element in the returned List, myRelObject is a ToOneFault that will be resolved by a separate query.
This result is not affected by setSemantics on the prefetch (JOINT, DISJOINT behave just the same way).
Expected result: myRelObject is filled with the prefetched entity object.
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[jira] Commented: (CAY-1115) Prefetch on SelectQueries doesn't
resolve ToOneFaults
Posted by "Andrus Adamchik (JIRA)" <de...@cayenne.apache.org>.
[ https://issues.apache.org/cayenne/browse/CAY-1115?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13138#action_13138 ]
Andrus Adamchik commented on CAY-1115:
--------------------------------------
Hi Robert,
in general to-one prefetch works just fine, so there may be something specific to your mapping of this relationship. Could you post a sample mapping that has the affected tables/entities and relationships between them? (if you don't want to make it publicly visible, you can email it to me directly: andrus at objectstyle dot org)
> Prefetch on SelectQueries doesn't resolve ToOneFaults
> -----------------------------------------------------
>
> Key: CAY-1115
> URL: https://issues.apache.org/cayenne/browse/CAY-1115
> Project: Cayenne
> Issue Type: Bug
> Components: Cayenne Core Library
> Affects Versions: 1.2 [STABLE]
> Environment: 1.2.4 on Linux
> Reporter: Robert Wruck
> Assignee: Andrus Adamchik
>
> final SelectQuery q = new SelectQuery(MyObject.class);
> q.addPrefetch("myRelObject");
> final List l = dataContext.performQuery(q);
> For each element in the returned List, myRelObject is a ToOneFault that will be resolved by a separate query.
> This result is not affected by setSemantics on the prefetch (JOINT, DISJOINT behave just the same way).
> Expected result: myRelObject is filled with the prefetched entity object.
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[jira] Commented: (CAY-1115) Prefetch on SelectQueries doesn't
resolve ToOneFaults
Posted by "Robert Wruck (JIRA)" <de...@cayenne.apache.org>.
[ https://issues.apache.org/cayenne/browse/CAY-1115?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13141#action_13141 ]
Robert Wruck commented on CAY-1115:
-----------------------------------
Hi Andrus,
after some debugging, it turned out today that in some cases the number of fetched objects exceeded the DataRowStore size... DOH!
I was fooled by the fact that the relationships are initially populated with a ToOneFault that normally gets resolved from the local cache.
Please close this one.
> Prefetch on SelectQueries doesn't resolve ToOneFaults
> -----------------------------------------------------
>
> Key: CAY-1115
> URL: https://issues.apache.org/cayenne/browse/CAY-1115
> Project: Cayenne
> Issue Type: Bug
> Components: Cayenne Core Library
> Affects Versions: 1.2 [STABLE]
> Environment: 1.2.4 on Linux
> Reporter: Robert Wruck
> Assignee: Andrus Adamchik
>
> final SelectQuery q = new SelectQuery(MyObject.class);
> q.addPrefetch("myRelObject");
> final List l = dataContext.performQuery(q);
> For each element in the returned List, myRelObject is a ToOneFault that will be resolved by a separate query.
> This result is not affected by setSemantics on the prefetch (JOINT, DISJOINT behave just the same way).
> Expected result: myRelObject is filled with the prefetched entity object.
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[jira] Closed: (CAY-1115) Prefetch on SelectQueries doesn't resolve
ToOneFaults
Posted by "Andrus Adamchik (JIRA)" <de...@cayenne.apache.org>.
[ https://issues.apache.org/cayenne/browse/CAY-1115?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andrus Adamchik closed CAY-1115.
--------------------------------
Resolution: Won't Fix
> Prefetch on SelectQueries doesn't resolve ToOneFaults
> -----------------------------------------------------
>
> Key: CAY-1115
> URL: https://issues.apache.org/cayenne/browse/CAY-1115
> Project: Cayenne
> Issue Type: Bug
> Components: Cayenne Core Library
> Affects Versions: 1.2 [STABLE]
> Environment: 1.2.4 on Linux
> Reporter: Robert Wruck
> Assignee: Andrus Adamchik
>
> final SelectQuery q = new SelectQuery(MyObject.class);
> q.addPrefetch("myRelObject");
> final List l = dataContext.performQuery(q);
> For each element in the returned List, myRelObject is a ToOneFault that will be resolved by a separate query.
> This result is not affected by setSemantics on the prefetch (JOINT, DISJOINT behave just the same way).
> Expected result: myRelObject is filled with the prefetched entity object.
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