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How to use hbm2java and cfg2hbm

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whitesox12

Post subject: How to use hbm2java and cfg2hbm

Posted: Tue Apr 25, 2006 5:19 pm

Newbie

Joined: Fri Apr 14, 2006 8:55 am
Posts: 6

Hi,

I am new to hibernate and need some information. I looked at several examples online and tried them too.

One thing I can't figure out is how to use hbm2java and cfg2hbm, didn't find any docs., can someone point me to some tutorial that explains how to use these.

I see following text on most of the *.hbm.xml files

Code:

<!--
Auto-generated mapping file from
the bibernate.org cfg2hbm engine
-->

and on persistent classes

Code:

/**
 * generated by hbm2java
 */

Can some please tell me when are these tools being used. As don't want to create the above files manually and would rather like to use the
the above tools. Any help is appreciated.

Thanks

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david

Post subject:

Posted: Wed Apr 26, 2006 2:45 am

Hibernate Team

Joined: Tue Aug 26, 2003 7:19 pm
Posts: 2364
Location: Brisbane, Australia

Here is a sample Ant script for hbm2java.. This should get you started.

Code:

<target name="hbm2java" description="Generate .java from .hbm files.">
  <delete>
    <fileset dir="${hibernateDO.dir}">
      <include name="**/*.java"/>            
    </fileset>         
  </delete>
      
  <taskdef name="hibernatetool" classname="org.hibernate.tool.ant.HibernateToolTask">
    <classpath refid="classpath.common"/>
  </taskdef>
      
  <hibernatetool destdir="${src.dir}">
    <configuration>
      <fileset dir="${src.dir}">
        <include name="**/hbm/*.hbm.xml"/>
      </fileset>
    </configuration>
    <hbm2java generics="false"/>
  </hibernatetool>

</target> 

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whitesox12

Post subject:

Posted: Wed Apr 26, 2006 10:55 am

Newbie

Joined: Fri Apr 14, 2006 8:55 am
Posts: 6

Thanks, how does cfg2hbm works. Looks like I need some king of configuration file available to use this. Any help is appreciated?

Thanks

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david

Post subject:

Posted: Wed Apr 26, 2006 10:05 pm

Hibernate Team

Joined: Tue Aug 26, 2003 7:19 pm
Posts: 2364
Location: Brisbane, Australia

First step is to review the documentation
http://www.hibernate.org/hib_docs/tools/reference/en/html/ant.html#d0e645

I think you mean hbm2hbmxml as there have been a few name changes for many parts of the tools untilities over recent times.

So here is a basic snippit of Ant xml for reverse engineering the database.

Code:

<hibernatetool>
 <jdbcconfiguration propertyfile="etc/hibernate.properties" />
 <hbm2hbmxml destdir="${build.dir}/src" /> 
</hibernatetool>

Then you can use hbm2java to create the POJOs.

BTW: If this is helpful you should click the approrpiate link so others will know the information has some value.

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