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Re: JDBC to ODBC bridge question...

Nikolai Devereaux wrote:
> Is it enough for xmlBlaster that I set up my database url to
> "jdbc:odbc://server/dbname" or do I need to modify the source to explicitly
> load a jdbc->odbc bridge?

No source modifications necessary.
You can even access simultaneous many different databases from
different vendors,
where each is automatically pooled separately.

> I've tried to send a message to xmlBlaster with this format:
> Key:
> <key oid='' contentMime='text/xml' contentMimeExtended='SQL_QUERY'></key>
> Content:
> <database:adapter>
>   <database:url>jdbc:odbc://server/dbname</database:url>
>   <database:username>username</database:username>
>   <database:password>password</database:password>
>   <database:interaction type='query' />
>   <database:command><![CDTATA[SELECT * FROM tableName]]></database:command>
>   <database:connectionlifespan ttl='1' />
>   <database:rowlimit max='30' />
>   <database:confirmation confirm='true' />
> </database:adapter>
> QoS:
> <qos>
>   <destination>__sys__jdbc</destination>
> </qos>
> Watching the xmlBlaster Control Panel window as it receives the message, I
> notice that the last call that happens in "TRACE" mode is "[XmlDBAdapter]
> Get connection..."
> This happens right before a call to create a new "ConnectionDescriptor"  I
> don't think I ever return from this function, because there are several Log
> calls immediately after this that are never output in the XmlBlaster Control
> Panel.
> The constructor for ConnectionDescriptor accepts an XmlDocument and parses
> it... so I can't figure out what's going on.
> If anyone has any ideas, that would be absolutely fantastic. =)
> Take care,
> Nik

Hi Nik,

I believe it is a bug which was fixed some weeks ago.
This bug was introduced when we switched to the new SAX2
parser and is related to the missing namespace declaration.
Suns crimson parser failed without this xmlns declaration.

You need a never cvs update and need to add
this declaration:

 <database:adapter xmlns:database='http://www.xmlBlaster.org/jdbc'>

I will update our documentation.

Hope it helps, if not please report again.


Marcel Ruff
mailto:ruff at swand.lake.de