PI97786: ECLIPSELINK THROWS "ARGUMENT TYPE MISMATCH" FOR JPQL CASE EXPRESSION

Fixes are available

APAR status

Closed as program error.

Error description

"IllegalArgumentException: argument type mismatch" error when we
use SUM and CASE in JPQL.



Here is the exception when the issue happened.


[err] java.lang.IllegalArgumentException: argument type mismatch

[err]     at
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)

[err]     at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeCons
tructorAccessorImpl.java:83)

[err]     at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Delega
tingConstructorAccessorImpl.java:57)

[err]     at
java.lang.reflect.Constructor.newInstance(Constructor.java:437)

[err]     at
org.eclipse.persistence.internal.security.PrivilegedAccessHelper
.invokeConstructor(PrivilegedAccessHelper.java:489)

[err]     at
org.eclipse.persistence.queries.ReportQueryResult.buildResult(Re
portQueryResult.java:122)

[err]     at [internal classes]

[err]     at
org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.interna
lExecuteQuery(UnitOfWorkImpl.java:2899)

[err]     at
org.eclipse.persistence.internal.sessions.AbstractSession.execut
eQuery(AbstractSession.java:1863)

[err]     at
org.eclipse.persistence.internal.sessions.AbstractSession.execut
eQuery(AbstractSession.java:1845)

[err]     at
org.eclipse.persistence.internal.sessions.AbstractSession.execut
eQuery(AbstractSession.java:1810)

[err]     at
org.eclipse.persistence.internal.jpa.QueryImpl.executeReadQuery(
QueryImpl.java:258)

[err]     at
org.eclipse.persistence.internal.jpa.QueryImpl.getResultList(Que
ryImpl.java:473)

Local fix

```
N/A
```

Problem summary

****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application      *
*                  Server Liberty - Java Persistence APA -     *
*                  JPA 2.1 & EclipseLink                       *
****************************************************************
* PROBLEM DESCRIPTION: EclipseLink incorrectly handles CASE    *
*                      & SUM operations by setting the wrong   *
*                      return type to the function             *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
Example:
@NamedQuery(
name="EntityTbl1.dto01a",
query="SELECT new model.Dto01("
+ "t.itemString1, "
+ "CASE t.itemString2 WHEN 'J' THEN 'Japan' ELSE
'Other' END, "
+ "SUM(CASE WHEN t.itemString3 = 'C' THEN 1 ELSE 0
END), "
+ "SUM(CASE WHEN t.itemString4 = 'D' THEN 1 ELSE 0
END) ) "
+ "FROM EntityTbl01 t "
+ "GROUP BY t.itemString1, t.itemString2")
public class Dto01 {
public Dto01(String str1,String str2,String str3,String
str4) {...}
public Dto01(String str1,String str2,Integer
integer1,Integer integer2) {...}
}
Test:
Query query = em.createNamedQuery("EntityTbl1.dto01a");
List<Dto01> dto01 = query.getResultList();
Exception:
UnitOfWork(831207702)--Thread(Thread[main,5,main])--
java.lang.IllegalArgumentException:
argument type mismatch
at
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeCons
tructorAccessorImpl.java:83)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Delega
tingConstructorAccessorImpl.java:57)
at
java.lang.reflect.Constructor.newInstance(Constructor.java:437)
at
org.eclipse.persistence.internal.security.PrivilegedAccessHelper
.invokeConstructor(PrivilegedAccessHelper.java:489)
at
org.eclipse.persistence.queries.ReportQueryResult.buildResult(Re
portQueryResult.java:122)
at
org.eclipse.persistence.queries.ReportQueryResult.<init>(ReportQ
ueryResult.java:79)
at
org.eclipse.persistence.queries.ReportQuery.buildObject(ReportQu
ery.java:598)

Problem conclusion

The fix for this APAR changes the EclipseLink implementation
and involves an update to the thirdparty source. See
https://bugs.eclipse.org/bugs/show_bug.cgi?id=534515

The fix for this APAR is currently targeted for inclusion in
Service Level (Fix Pack) 9.0.0.9 of WebSphere Application
Server version 9.0 and in fix pack 18.0.0.2 for WebSphere
Application Server Liberty. 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
PI97786
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
900
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2018-05-10
Closed date
2018-07-12
Last modified date
2018-07-12

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

R900 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":"9.0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
02 November 2021

Tips

PI97786: ECLIPSELINK THROWS "ARGUMENT TYPE MISMATCH" FOR JPQL CASE EXPRESSION

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

R900 PSY

Document Information

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