Message:
The following issue has been reopened.
Reopener: Christian Bauer
Date: Wed, 6 Aug 2003 5:05 PM
OK, thanks for spotting this.
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View the issue:
http://opensource.atlassian.com/projects/hibernate/secure/ViewIssue.jspa?key=HB-238
Here is an overview of the issue:
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Key: HB-238
Summary: Documentation Bug - Retrieving the size of a collection
Type: Improvement
Status: Reopened
Priority: Trivial
Project: Hibernate2
Components:
core
Fix Fors:
2.0.2
Versions:
2.0.2
Assignee:
Reporter: Paul Rivers
Created: Wed, 6 Aug 2003 2:23 PM
Updated: Wed, 6 Aug 2003 5:05 PM
Description:
In the documentation in section 9.13, the is says:
You can count the number of query results without actually returning them:
Integer size = (Integer) s.filter( collection, "select count(*)" ).get(0);
The query, session.filter() returns a collection, not a list! So the call to .get(0) results in a compile error. Instead, the correct way to do it is listed in the faq:
( (Integer) s.createFilter( collection, "select count(*)" ).iterate().next() ).intValue()
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