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From "Fay Wang (JIRA)" <>
Subject [jira] Updated: (OPENJPA-605) Informix will throw an exception when a unique index is explictily created on the primary key columns
Date Wed, 21 May 2008 05:44:55 GMT


Fay Wang updated OPENJPA-605:

    Attachment: openjpa.patch

Sorry, I did not notice Albert's comments. This patch is based on his comments.

> Informix will throw an exception when a unique index is explictily created on the primary
key columns
> -----------------------------------------------------------------------------------------------------
>                 Key: OPENJPA-605
>                 URL:
>             Project: OpenJPA
>          Issue Type: Bug
>            Reporter: Fay Wang
>         Attachments: openjpa.patch, openjpa.patch, 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,
> 	at org.apache.openjpa.lib.jdbc.LoggingConnectionDecorator.wrap(
> 	at org.apache.openjpa.lib.jdbc.LoggingConnectionDecorator.access$3(
> 	at org.apache.openjpa.lib.jdbc.LoggingConnectionDecorator$LoggingConnection$LoggingStatement.executeUpdate(
> 	at org.apache.openjpa.lib.jdbc.DelegatingStatement.executeUpdate(
> 	at org.apache.openjpa.jdbc.schema.SchemaTool.executeSQL(
> 	at org.apache.openjpa.jdbc.schema.SchemaTool.createIndex(
> 	at org.apache.openjpa.jdbc.schema.SchemaTool.add(
> 	at org.apache.openjpa.jdbc.schema.SchemaTool.add(
> 	at
> 	at org.apache.openjpa.jdbc.meta.MappingTool.record(
> 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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