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From "Michael Dick (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (OPENJPA-1133) DBDictionary.getPlaceholderValueString returns 0 for boolean which fails in PostgreSQL database.
Date Tue, 16 Jun 2009 16:19:07 GMT

     [ https://issues.apache.org/jira/browse/OPENJPA-1133?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael Dick resolved OPENJPA-1133.
-----------------------------------

       Resolution: Fixed
    Fix Version/s: 2.0.0
                   1.3.0

Thanks for the patch Ravi. 

> DBDictionary.getPlaceholderValueString returns 0 for boolean which fails in PostgreSQL
database.
> ------------------------------------------------------------------------------------------------
>
>                 Key: OPENJPA-1133
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-1133
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: query
>    Affects Versions: 2.0.0
>         Environment: openJPA trunk.
> PostgreSQL 8.3
>            Reporter: Ravi P Palacherla
>            Assignee: Ravi P Palacherla
>             Fix For: 1.3.0, 2.0.0
>
>         Attachments: OPENJPA-1133_trunk.patch
>
>
> When DBDictionary.getPlaceholderValueString is called with Types.BIT, it returns "0".

> PostgreSQL actually requires that a boolean be set. It cannot handle a numeric argument.
> Fix Description:
> Overriden DBDictionary.getPlaceholderValueString() inside PostgresDictionary to process
Types.BIT correctly. 
> Now, the method returns 'false' value when Types.BIT is passed as Column.type.
> Test case:
> The above bug is exposed from Kodo product which internally uses openJPA.
> When a query is made on a subclass using kodo api.
> Kodo generates an SQL ( with help of openJPA) that has UNION in it.
> It generates a SQL similar to the following:
>  SELECT 0  FROM public.classA t0 UNION ALL SELECT t0.guidance FROM public.classB t0
>  
> It got 0 from the openJPA DBDictionary.getPlaceholderValueString as the guidance data
type is boolean.
> The above SQL will throw an exception in postgreSQL db saying: 
> ERROR: UNION types integer and boolean cannot be matched.

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