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From Stefan Guggisberg <stefan.guggisb...@gmail.com>
Subject Re: Can oracle be used with jackrabbit?
Date Thu, 15 Dec 2005 13:30:06 GMT
hi antonis

On 12/15/05, Antonis Tsaltas <Antonis.Tsaltas@eurodyn.com> wrote:
> Dear all,
>
> I am trying to use oracle with jackrabbit and the steps I have followed
> are the following:
>
> 1) I have created the ddl files needed for creating the schemas with
> oracle database similar to the existing ones and add them to the
> appropriate package in the jackrabbit jar generated after the build.
> However, when I tried to run a sample application I got nested
> exceptions during the configuration of the repository and more specific
> during the insertion of the root node due to the case that Oracle is
> treating an emptry string and null as the same and the fsname of the
> root node is empty string.
>
> 2) Next I tried to allow nullable values for the fsname as this will
> only be the case for the root node and there will be no manual updates
> to the repository. At this point it failed again when it tried to add an
> entry '/meta' in fsentries table when it was checking if the parent of
> this node exists (which is root node '/' ). There it performs the
> following query:
>
> select 1 from REP_FSENTRY where FSENTRY_PATH = '/' and
> FSENTRY_NAME is null
>
> which is in oracle equivalent with this:
>
> select 1 from REP_FSENTRY where FSENTRY_PATH = '/' and
> FSENTRY_NAME=''
>
> and then it tries to insert the root node again but there is the logical
> constraint:
>
> create unique index ${schemaObjectPrefix}FSENTRY_IDX on
> ${schemaObjectPrefix}FSENTRY
>   (FSENTRY_PATH, FSENTRY_NAME).
>
> Are there any suggestion or does anyone know if jackrabbit can work fine
> with oracle db server?

well there's no reason why that shouldn't be the case in general.
but because of oracle's rather exotic and non-standard 'feature' of treating
empty values as null you will probably have to write some oracle specific
code :(

cheers
stefan



>
> Thanx
>

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