[Hibernate-issues] [Hibernate-JIRA] Commented: (HB-111) fields defined as formulas...

[<leg...@at...>]

The following comment has been added to this issue:

     Author: Gavin King
    Created: Wed, 30 Jul 2003 4:04 AM
       Body:
This is now implemented for properties of <class> or <subclass>; not for properties of <component>s, nor for properties in a <joined-subclass> heirarchy.

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  http://opensource.atlassian.com/projects/hibernate/secure/ViewIssue.jspa?key=HB-111


Here is an overview of the issue:
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        Key: HB-111
    Summary: fields defined as formulas...
       Type: New Feature

     Status: In Progress
   Priority: Minor

    Project: Hibernate2
 Components: 
             core
   Versions:
             2.0rc2

   Assignee: Gavin King
   Reporter: Fabio Parise

    Created: Thu, 29 May 2003 4:58 AM
    Updated: Wed, 30 Jul 2003 4:02 AM

Description:
Trying to define a computed field (i.e. 'status1000' as the result of the following computation: status+1000; where 'status' is a table column) in this way:

<property column="STATUS+1000" length="10" name="status1000" not-null="true" type="java.lang.Long" update="false" insert="false"/>

if the first 7 chars of the attribute 'column' contains some non-valid chars for sql aliases, the produced SELECT statement will fail.

In the example the alias for the computed field is 'STATUS+16_', which is not a valid sql alias.

SELECT WkfPr0_.pkid as pkid, ..., WkfPr0_.STATUS+1000 as STATUS+16_ FROM WKF_PROCESS_CLASS WkfPr0_ WHERE WkfPr0_.pkid=?

if the field involved in the formula has a longer name i.e. MYSTATUS --> formula=MYSTATUS+1000, the computed alias is MYSTATU16_, which is a valid alias.


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