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From "Tan, Lee" <Lee....@qg.com>
Subject FW: Batched Statements
Date Thu, 19 Apr 2007 21:49:25 GMT
What is the interest in trying to implement this in iBatis?
http://ayende.com/Blog/archive/2006/09/13/7276.aspx has some good
statistics on possible performance gains accessing these included
batching methods via reflection and delegates.

We're looking at the same problems and right now the prevailing winds
are pushing us to use iBatis only for Selects, all Updates, Inserts, or
Deletes would be handled manually like Ron suggested below, and I'd like
to avoid that.

Thoughts?

-----Original Message-----
From: Clough, Samuel (USPC.PRG.Atlanta)
[mailto:Samuel_Clough@princetonrg.com]
Sent: Thursday, January 04, 2007 7:06 AM
To: user-cs@ibatis.apache.org
Subject: RE: Batched Statements

That's helpful, but I was looking to see if there was going to be a way
to do it in iBatis.  IIRC, NHIbernate has a way to do it, but them
Nhibernate so abstracts the sql I may be thinking of something else. It
would be nice to just call something like BeginBatch on the datamapper
and then FlushBatch to execute the statements.  Since I'm using iBatis,
I'd rather keep all the sql in iBatis so that everything's clean.  If I
have to batch up raw sql statements myself then I'm losing the benefits
of iBatis.

Just thinking out loud, it would also be a nice trick if when you had an
update, insert, delete, etc statement where the parameter class was a
domain object if you could pass an array of domain objects and iBatis
would automatically loop over each object and execute the statement for
each object in the array, again preferably in a batch if possible.  I
know that would not be obvious, but it might be a nice trick if you need
to so several inserts of the same type like I do on a current project. 

-----Original Message-----
From: Ron Grabowski [mailto:rongrabowski@yahoo.com]
Sent: Wednesday, January 03, 2007 4:53 PM
To: user-cs@ibatis.apache.org
Subject: Re: Batched Statements

Batching is a new feature of ADO.Net's 2.0 DataAdapter class:

http://davidhayden.com/blog/dave/archive/2006/01/05/2665.aspx

I believe JDBC natively supports batching.

When it makes sense to batch things I usually use a StringBuilder and
build the raw sql statements myself.

----- Original Message ----

From: "Clough, Samuel (USPC.PRG.Atlanta)"
<Samuel_Clough@princetonrg.com>

To: user-cs@ibatis.apache.org

Sent: Wednesday, January 3, 2007 3:45:00 PM

Subject: Batched Statements



         I noticed that there  is an ability in the Java version to
batch statements.  So far I have been  unable to find that ability in
iBatis by looking around or by searching google,  the mailing list
archives, etc.  Is there some way to batch statements that  I have
missed?  If not is it planned for a future  release? 
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