Message:
A new issue has been created in JIRA.
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View the issue:
http://objectstyle.org/jira/secure/ViewIssue.jspa?key=CAY-360
Here is an overview of the issue:
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Key: CAY-360
Summary: Non-refreshed Named Queries in Modeler throw exception
Type: Bug
Status: Assigned
Priority: Major
Project: Cayenne
Components:
Cayenne Core Library
Fix Fors:
1.1
1.2 [DEV]
Versions:
1.1
1.2 [DEV]
Assignee: Andrus Adamchik
Reporter: Michael Gentry
Created: Thu, 1 Sep 2005 9:50 AM
Updated: Thu, 1 Sep 2005 9:50 AM
Environment: All
Description:
Jeff de Vries was reporting problems on the Cayenne User list regarding having a named query defined in Cayenne Modeler, but getting an exception (Caching of unnamed queries is not supported.) when he used a Shared/DataContext cache and didn't refresh result. An example of the calling code is:
dataContext.performQuery("MyQuery", false);
Researching the issue I discovered:
DataContext.performQuery(String, boolean) ->
DataContext.performQuery(String, Map, boolean) ->
(actual named query) SelectQuery.createQuery((Map) ->
SelectQuery.queryWithParameters(Map) ->
SelectQuery.queryWithParameters(Map, boolean)
This final method creates a new SelectQuery (local variable "query") and and copies data from the original query into the new one, but omitted copying the query name, hence the exception listed above.
There is a comment at the bottom of this method which states:
// TODO: implement algorithm for building the name based on the original name and
// the hashcode of the map of parameters. This way query clone can take advantage
// of caching.
Should discuss on Cayenne Developer if it is OK to copy the name or if we should MD5/etc the name.
/dev/mrg
PS. This effects 1.1 and 1.2.
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