On 06 Jan 2004 21:33, craigduncan wrote:

>I am using middlegen and hibernate to generate hbm.xml files and java
>files from an existing database.  My ant script runs middlegen and all
>the output files from that process are written to the build dir.
>Consequently  an "ant clean" will remove all that generated code.  I
>would like to keep this behaviour as that is what you would expect a
>clean to do.  What I want to do is skip the middlgen target if the
>database has not changed.  Any suggestions on how to do this?  I have
>looked at the ant "uptodate" task but I can't see how to effectively
use
>that.

>I noticed in the example above there is a unless="middlegen.skip" and
>thought maybe you have figured out a way to do what I want to do.

>Thanks for any input.

>Craig Duncan


How you detect the database has changed is difficult. If you can just 
set the proerty and your done. If you cannot, you would know as a 
developer (maybe), so you can set the property on the Ant command line 
prepared for processing the target.