[ https://issues.apache.org/jira/browse/OPENJPA-605?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Fay Wang updated OPENJPA-605:
-----------------------------

    Attachment: openjpa.patch

The patch fixes the NPE introduced from the earlier one.

> Informix will throw an exception when a unique index is explictily created on the primary key columns
> -----------------------------------------------------------------------------------------------------
>
>                 Key: OPENJPA-605
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-605
>             Project: OpenJPA
>          Issue Type: Bug
>            Reporter: Fay Wang
>         Attachments: openjpa.patch, openjpa.patch
>
>
> When an entity is defined as following (unique index annotation on the primary key field. In this situation): 
> @Entity
> @Table(name="AddressBean")   
> public class AddressBeanAno implements IAddressBean,  Serializable {
>     @EmbeddedId
>     @Index(name="street_index",unique=true)
>     @Column(length=30)
>     private AddressPK street;
> Informix will issue an error:
> Caused by: org.apache.openjpa.lib.jdbc.ReportingSQLException: Index already exists on column. {stmnt 1440372186 CREATE UNIQUE INDEX street_index ON AddressBean (street)} [code=-350, state=S0011]
> 	at org.apache.openjpa.lib.jdbc.LoggingConnectionDecorator.wrap(LoggingConnectionDecorator.java:192)
> 	at org.apache.openjpa.lib.jdbc.LoggingConnectionDecorator.access$3(LoggingConnectionDecorator.java:189)
> 	at org.apache.openjpa.lib.jdbc.LoggingConnectionDecorator$LoggingConnection$LoggingStatement.executeUpdate(LoggingConnectionDecorator.java:762)
> 	at org.apache.openjpa.lib.jdbc.DelegatingStatement.executeUpdate(DelegatingStatement.java:114)
> 	at org.apache.openjpa.jdbc.schema.SchemaTool.executeSQL(SchemaTool.java:1204)
> 	at org.apache.openjpa.jdbc.schema.SchemaTool.createIndex(SchemaTool.java:1019)
> 	at org.apache.openjpa.jdbc.schema.SchemaTool.add(SchemaTool.java:554)
> 	at org.apache.openjpa.jdbc.schema.SchemaTool.add(SchemaTool.java:344)
> 	at org.apache.openjpa.jdbc.schema.SchemaTool.run(SchemaTool.java:321)
> 	at org.apache.openjpa.jdbc.meta.MappingTool.record(MappingTool.java:501)
> Per Informaix SQL syntax guide (Create Index section):
> You can not add a unique index to a column or column list that a primary -key constraint on it. The reason is  that defining the column or column list as the primary key causes the database server to create a unique internal index on the column or column list. So you cannot create another unique index on this column or column list with CREATE INDEX statement.    

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