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nicomouss
 Post subject: hbm2ddl nant task
PostPosted: Fri Mar 07, 2008 10:31 am 
Newbie

Joined: Fri Mar 07, 2008 9:30 am
Posts: 1
Hi all,

I'm trying to use the hbm2ddl nant task. I would like to auto-generate DDL script based on my mapping files.

Here is my Nant build file :

Code:
<project name="DDL Generator" default="generateDDLScript" basedir="." xmlns="http://nant.sf.net/release/0.85/nant.xsd">
  <loadtasks assembly="C:\Program Files\NHibernate\bin\net-2.0\NHibernate.Tasks.dll"/>
  <target name="generateDDLScript">
    <hbm2ddl connectionprovider="NHibernate.Connection.DriverConnectionProvider"
             dialect="NHibernate.Dialect.MsSql2005Dialect"
             connectiondriverclass="NHibernate.Driver.SqlClientDriver"
             connectionstring="data source=.\SQLEXPRESS;database=Test;Trusted_Connection=Yes;"
             droponly="false"
             exportonly="true"
             delimiter=" GO "
             outputtoconsole="false"
             formatnice="true"
             outputfilename=".\Test.sql">
      <assemblies>
        <include name=".\MyTestProject.Dal.dll"></include>
      </assemblies>
    </hbm2ddl>
  </target>
</project>


(Note : the mapping files are embedded as resources in the MyTestProject.Dal.dll assembly)

When I launch the build, here are the console traces :

Code:
NAnt 0.85 (Build 0.85.2478.0; release; 14/10/2006)
Copyright (C) 2001-2006 Gerry Shaw
http://nant.sourceforge.net

Buildfile: file:///C:/Temp/DDL.build
Target framework: Microsoft .NET Framework 2.0
Target(s) specified: generateDDLScript

[loadtasks] Scanning assembly "NHibernate.Tasks" for extensions.

generateDDLScript:

  [hbm2ddl] Adding assembly file C:\Temp\MyTestProject.Dal.dll
  [hbm2ddl] Successful DDL schema output: .\Test.sql

BUILD SUCCEEDED

Total time: 0.3 seconds.


The result is an empty Test.sql file...
Any idea what's wrong here ?

Thanks by advance,

Nicolas
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critchie
 Post subject:
PostPosted: Sat May 10, 2008 2:41 pm 
Newbie

Joined: Sat May 10, 2008 2:37 pm
Posts: 2
Was there ever an answer found for this? I'm having the exact same issue.
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critchie
 Post subject:
PostPosted: Tue May 13, 2008 9:26 pm 
Newbie

Joined: Sat May 10, 2008 2:37 pm
Posts: 2
I may have figured this out. My configuration assumed that my mapping files were embedded but I failed to include them as resources in my Nant build process.

I say "may have" because when I couldn't get the task to work I created a console application to generate the DDL and I was having the same issue... an empty *.sql file. After I embedded the mapping files properly everything worked fine. I haven't gone back to set this up as a task to see if it works but I assume it will.

So bottom line... make sure your mapping files are embedded resources if you a expecting them to be.
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