For the purposes of the list.

Begin forwarded message:

From: Charles Foster Subject: Re: ConnectionPoolXQDataSource Date: 12 December 2013 20:41:44 GMT To: rajeshwar.kamineni@neustar.biz

Hi Raj,

There is the class:

net.xqj.basex.BaseXConnectionPoolXQDataSource

Which is an implementation of ConnectionPoolXQDataSource [1].

However, as far as I'm aware. No Connection Pool Manager yet exists for XQJ. So you would have to write your own. If you were to write your own, then using instances of ConnectionPoolXQDataSource is definitely the way to go.

I plan to write an XQJ Connection Pool Manager at some point in the future, but it won't be free. If you know of someone who is willing to pay the development of an XQJ Connection Pooler Mechanism, then I'm up for making this a priority of other pieces of work I've got on.

BaseX supports ACID transactions within the context of a single running XQuery, but doesn't support client transactions.

Both Sedna and MarkLogic do support client transactions though.

To find out if an XQJ implementation supports client side transactions, amongst other things, you can inspect at its XQMetaData [2], specifically the "boolean isTransactionSupported()" method.

Kind Regards,

Charles

[1] http://xqj.net/javadoc/javax/xml/xquery/ConnectionPoolXQDataSource.html [2] http://xqj.net/javadoc/javax/xml/xquery/XQMetaData.html

On 12 Dec 2013, at 17:29, rajeshwar.kamineni@neustar.biz wrote:

...

Raj Kamineni:

Just wondering if there is an implementation of this ConnectionPoolXQDataSource for baseX.

I have background in the JDBC SQL so I am thinking in terms of connection pool to database.

Also, I got an error: Client side transaction are not supported. Is it the baseX that doesn't support it or is it the xqj driver that is unable to handle it now..

thanks Raj Sr. Architect Neustar.