APAR status
Closed as program error.
Error description
The stack will contain java.lang.ClassCastException: java.lang.Object; incompatible with test.servlet.CodeTable when attempting to call a Stored Procedure using JPA and cast the resulting data to the appropriate class.
Local fix
Move the the orm.xml contents to annotations on the class.
Problem summary
**************************************************************** * USERS AFFECTED: All users of the Java Persistence API * * (JPA) 2.0 feature of the IBM WebSphere * * Application Server V7 Feature Pack for * * OSGi Applications and Java Persistence API * * 2.0 who make use of column names with * * number values in their Java Persistence * * API (JPA) Entities. * **************************************************************** * PROBLEM DESCRIPTION: Incorrectly generated SQL for numeric * * column names defined in JPA Entities. * **************************************************************** * RECOMMENDATION: * **************************************************************** When a numeric column name is specified with a single number (for example: "1"), incorrect SQL is generated. The SQL is supposed to have a single set of double quotes around the name. Different incorrect SQL is generated, depending on the OpenJPA release. For JPA 1.0 releases of OpenJPA, there are no quotes (for example: 1). For JPA 2.0 releases of OpenJPA, there are 2 sets of double quotes (for example: ""1""). To follow are some examples for databases that support double quote delimiters: *For annotations: @Column(name = "\"2\"") public String description; *For xml: <attributes> <id name="id"> <column name=""1"" /> </id> <basic name="description"> <column name=""2"" /> </basic> </attributes> With this example in mind, and given this issue is slightly different on the different OpenJPA releases, we must describe the issue as it relates to the various JPA releases of OpenJPA, as follows: *For JPA 1.0 releases of OpenJPA, a column name that starts with a number doesn't work and as mentioned incorrect SQL is generated. The column name needs to be delimited with the the specific database delimiter in the SQL. However, delimited identifiers are not supported in the JPA specification until JPA 2.0. OpenJPA does however attempt to support delimited identifies to a certain point in JPA 1.0 releases. Even manually delimiting the column name in the annotation or orm xml causes a problem. Note that this APAR only address and fixes column names. Manual delimiting of other database identifiers may not work on JPA 1.0 releases of OpenJPA. *For JPA 2.0 release of OpenJPA, delimited identifier support is mandated by the JPA 2.0 specification and is provided in the corresponding OpenJPA releases. This provides support for both manually delimited identifiers and auto delimiting identifiers based on 'starting' and 'embedded' characters. However, there is a simple bug in this support when a single numeric name is provided as a column name (as mentioned above, incorrect SQL is generated).
Problem conclusion
This fix will allow proper SQL to be generated for manually delimiting column names in JPA 1.0 releases of OpenJPA. On JPA 2.0 release of OpenJPA, this fix will allow proper SQL to be generated for both manually delimited identifiers and auto delimiting identifiers. The fix for this APAR is currently targeted for inclusion in Fix Pack 1.0.0.9 for the Feature Pack for OSGi Applications and Java Persistence API 2.0. 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
PM66746
Reported component name
JPA OSGI FEATUR
Reported component ID
5724J0857
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2012-06-13
Closed date
2012-07-09
Last modified date
2012-07-09
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
JPA OSGI FEATUR
Fixed component ID
5724J0857
Applicable component levels
R700 PSY
UP
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Document Information
Modified date:
29 September 2020