PM99374: JPA VERSION FIELD IN A PROJECTION ALWAYS RETURNED AS AN INTEGER

Fixes are available

APAR status

Closed as program error.

Error description

When a JPQL query is run to retrieve a field of a JPA Entity,
JPA should return the correct Java type as defined in the JPA
Entity.  However, when a field defined as an @Version, and a
type of Long or Short, the returned field type is an Integer.

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application      *
*                  Server V8.0.0, V8.5.0, and V8.5.5 who make  *
*                  use of a JPA @Version field.                *
****************************************************************
* PROBLEM DESCRIPTION: Version field in a JPA projection       *
*                      always returned as an Integer.          *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
There is an issue where a @Version field is returned as an
Integer when the field is defined as a Long or Short. To
explain, lets take this entity:
@Entity
public class LongVersionEntity implements Serializable {
.......
 &#130; &#160; &#130; &#160; &#130; &#160; &#130; &#160;@Version
 &#130; &#160; &#130; &#160; &#130; &#160; &#130; &#160;protected Long version;
.......
With this entity take the following query:
String str = "SELECT o.id, o.version FROM LongVersionEntity o";
Query query = em.createQuery(str);
List<Object[]> objectList = query.getResultList();
for (Object[] objects : objectList) {
 &#130; &#160; &#130; &#160; &#130; &#160; &#130; &#160;objects[1].getClass() //Will return Integer.
........
Notice in this query we are selecting the version field. When
iterating over the results, we will find that
objects[1].getClass() will return Integer, rather than Long.
The results are the same for the other supported types,
except for Timestamp.

Problem conclusion

With this fix, code has been added to OpenJPA to ensure that
an @Version field returned from a query is of the correct type.

The fix for this APAR is currently targeted for
inclusion in Service Levels (Fix Packs) 8.0.0.9 and 8.5.5.2 of
WebSphere Application Server versions 8.0.0 and 8.5.5.

Please refer to the recommended updates page for delivery
information:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980

Temporary fix

Comments

APAR Information

APAR number
PM99374
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
800
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2013-10-17
Closed date
2014-01-15
Last modified date
2014-01-15

APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name
WEBS APP SERV N
Fixed component ID
5724H8800

Applicable component levels

R800 PSY
UP
R850 PSY
UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
28 April 2022

Tips

PM99374: JPA VERSION FIELD IN A PROJECTION ALWAYS RETURNED AS AN INTEGER

Fixes are available

Subscribe

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name

Fixed component ID

Applicable component levels

R800 PSY

R850 PSY

Document Information

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