The following comment has been added to this issue:
Author: Gavin King
Created: Fri, 20 Jun 2003 10:14 PM
Body:
It would be a source of bugs to re-use the same array each time. Anyway the cost of array creation is tiny compared to the cost of hitting the database.
But I will accept you patch. Thanks.
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Here is an overview of the issue:
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Key: HB-146
Summary: Eliminate array creation for single column queries
Type: Patch
Status: Unassigned
Priority: Minor
Project: Hibernate2
Components:
core
Versions:
2.0.1
Assignee:
Reporter: Chris Nokleberg
Created: Fri, 20 Jun 2003 1:11 AM
Updated: Fri, 20 Jun 2003 1:14 AM
Description:
IteratorImpl currently created a new Object[] for each row returned from a query. For single column queries the iterator then just pulls the single value out of the array before returning it. This patch removes the array creation for single column queries.
BTW, why was the decision made to use a new array for each row? Even in the case of multiple value queries, it would be much more efficient to reuse the same array. The user could copy the values into a new array if so desired. It's probably too late to change this, unfortunately...
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