Hibernate Extension 2.1 generating 0 size java files ?

bruehlicke · **Posted:** Mon Apr 12, 2004 11:32 am

I have just upgrated my hibernate-tools.jar from 2.0.3 to Hibernate Extensions 2.1 and it generates now 0 kb sized Java files. Using the old 2.0.3 hibernate-tools.jar instead wokrs fine ..... any had the same ? Any new stuff I am missing here ?

Thanx
B-)

bruehlicke · **Posted:** Mon Apr 12, 2004 11:41 am

The error I get using the new hibernate-tools.jar via the ant build

<target name="gen-src" depends="splash" unless="gen-src.not.required">
<taskdef
name="hbm2java"
classname="net.sf.hibernate.tool.hbm2java.Hbm2JavaTask"
classpathref="gen-src.class.path"
/>

<hbm2java output="${src.dir}" classpathref="gen-src.class.path">
<fileset dir="${src.dir}/com/xyz/hibernate/model">
<include name="**/*.hbm.xml"/>
</fileset>
</hbm2java>

</target>

is

gen-src:
[hbm2java] Processing 15 files.
[hbm2java] Building hibernate objects
[hbm2java] Apr 12, 2004 10:36:43 AM net.sf.hibernate.tool.hbm2java.Generator generate
[hbm2java] INFO: Generating 1 in C:\job\perforce\project\main\java\xyz\src
[hbm2java] java.lang.NullPointerException
[hbm2java] at net.sf.hibernate.tool.hbm2java.BasicRenderer.isPropertySet(BasicRenderer.java:611)
[hbm2java] at net.sf.hibernate.tool.hbm2java.BasicRenderer.generateConcreteEmptyClasses(BasicRenderer.java:332)
[hbm2java] at net.sf.hibernate.tool.hbm2java.BasicRenderer.render(BasicRenderer.java:59)
[hbm2java] at net.sf.hibernate.tool.hbm2java.Generator.write(Generator.java:138)
[hbm2java] at net.sf.hibernate.tool.hbm2java.Generator.writeRecur(Generator.java:115)
[hbm2java] at net.sf.hibernate.tool.hbm2java.Generator.generate(Generator.java:104)
[hbm2java] at net.sf.hibernate.tool.hbm2java.CodeGenerator.main(CodeGenerator.java:125)
[hbm2java] at net.sf.hibernate.tool.hbm2java.Hbm2JavaTask.processFile(Hbm2JavaTask.java:145)
[hbm2java] at net.sf.hibernate.tool.hbm2java.Hbm2JavaTask.execute(Hbm2JavaTask.java:95)
[hbm2java] at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:269)
[hbm2java] at org.apache.tools.ant.Task.perform(Task.java:364)
[hbm2java] at org.apache.tools.ant.Target.execute(Target.java:301)
[hbm2java] at org.apache.tools.ant.Target.performTasks(Target.java:328)
[hbm2java] at org.apache.tools.ant.Project.executeTarget(Project.java:1215)
[hbm2java] at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:383)
[hbm2java] at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:269)
[hbm2java] at org.apache.tools.ant.Task.perform(Task.java:364)
[hbm2java] at org.apache.tools.ant.Target.execute(Target.java:301)
[hbm2java] at org.apache.tools.ant.Target.performTasks(Target.java:328)
[hbm2java] at org.apache.tools.ant.Project.executeTarget(Project.java:1215)
[hbm2java] at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:383)
[hbm2java] at org.apache.tools.ant.taskdefs.CallTarget.execute(CallTarget.java:107)
[hbm2java] at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:269)
[hbm2java] at org.apache.tools.ant.Task.perform(Task.java:364)
[hbm2java] at org.apache.tools.ant.Target.execute(Target.java:301)
[hbm2java] at org.apache.tools.ant.Target.performTasks(Target.java:328)
[hbm2java] at org.apache.tools.ant.Project.executeTarget(Project.java:1215)
[hbm2java] at org.apache.tools.ant.Project.executeTargets(Project.java:1063)
[hbm2java] at org.apache.tools.ant.Main.runBuild(Main.java:632)
[hbm2java] at org.apache.tools.ant.Main.startAnt(Main.java:183)
[hbm2java] at org.apache.tools.ant.launch.Launcher.run(Launcher.java:197)
[hbm2java] at org.apache.tools.ant.launch.Launcher.main(Launcher.java:56)
[hbm2java] Apr 12, 2004 10:36:43 AM net.sf.hibernate.tool.hbm2java.Generator generate
[hbm2java] INFO: Generating 1 in C:\job\perforce\project\main\java\xyz\src

bruehlicke · **Posted:** Mon Apr 12, 2004 2:22 pm

And it did not change when adding the meta tags for "implement-equals" and "use-in-equals" as described in the release notes

<class
name="com.xyz.hibernate.model.Company"
table="COMPANY"
>
<meta attribute="implement-equals"/>

<id
name="companyS"
column="COMPANY_S"
type="java.lang.String"
length="19">
<meta attribute="use-in-equals"/>
<generator class="comxyz.hibernate.SurrogateKeyGenerator"/>
</id>

<property
name="companyCode"
column="COMPANY_CODE"
type="java.lang.String"
length="40"
/>
... etc

Hope somebody can explain what I am doing wrong ?
B-)

max · **Posted:** Mon Apr 12, 2004 4:16 pm

either make a simple example and add it as a jira issue or try to follow the code and see why it happens..

bruehlicke · **Posted:** Mon Apr 12, 2004 4:44 pm

Thanx, until I find some time to debug the code I sent this info in case somebody has similar problems ....

Here a simple example. Initially generated with Middlegen and edited to add the new meta tags
From the error it seam slike ant is having problems. Using exaqct same ant file and Hbm mapping file
it works file with the 2.0.3 hibernate-tools.jar ...

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 2.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd" >

<hibernate-mapping default-cascade="save-update">


<class
name="com.xyz.hibernate.model.TestCountry"
table="TEST_COUNTRY"
>
<meta attribute="implement-equals"/>

<id
name="countryS"
type="java.lang.String"
column="COUNTRY_S"
>
<meta attribute="use-in-equals"/>
<generator class="assigned" />
</id>

<property
name="name"
type="java.lang.String"
column="NAME"
not-null="true"
length="40"
/>

</class>
</hibernate-mapping>

And the ant parts of intrests are where the hibernate/tools contains the new hibernate-tools.jar file

<path id="gen-src.class.path">
<pathelement path="${classes.dir}"/>
<fileset dir="${dev.home}/hibernate">
<include name="hibernate2.jar"/>
</fileset>
<fileset dir="${dev.home}/hibernate/lib">
<include name="*.jar"/>
</fileset>
<fileset dir="${dev.home}/hibernate/tools">
<include name="*.jar"/>
</fileset>
<fileset dir="${dev.home}/hibernate/tools/lib">
<include name="*.jar"/>
</fileset>
</path>

<target name="gen-src" unless="gen-src.not.required">
<taskdef
name="hbm2java"
classname="net.sf.hibernate.tool.hbm2java.Hbm2JavaTask"
classpathref="gen-src.class.path"
/>

<hbm2java output="${src.dir}" classpathref="gen-src.class.path">
<fileset dir="${src.dir}/com/xyz/hibernate/model">
<include name="**/*.hbm.xml"/>
</fileset>
</hbm2java>

</target>

Best
B-)

max · **Posted:** Mon Apr 12, 2004 5:42 pm

arh darn - i've found the bug in the default configuration of hbmj2ava ;(

if you use the --config option then there should be no problems.

bruehlicke · **Posted:** Mon Apr 12, 2004 6:26 pm

GREAT !! -- I just have to edit my ant build file than and add an argument to the hbm2java - thanx so much ! Don't yet know howto do that - but that I can figure out myselfe ... thanx again

B-)

bruehlicke · **Posted:** Tue Apr 13, 2004 10:28 am

Hmm - have tried to look around on apache.org but could not find a way to add the "--config" option to hbm2java when using in a TaskDef with ant like
<target name="gen-src" unless="gen-src.not.required">

<taskdef
name="hbm2java"
classname="net.sf.hibernate.tool.hbm2java.Hbm2JavaTask"
classpathref="gen-src.class.path"
/>

<hbm2java output="${src.dir}" classpathref="gen-src.class.path">
<fileset dir="${src.dir}/com/xyz/hibernate/model">
<include name="**/*.hbm.xml"/>
</fileset>
</hbm2java>

</target>

anybody has an idea here how we can add the "--config" ?!?! Of course we could use a <java> block but then how to tell the hbm2java to take all files as example above in a given directory using <fileset> ??!?!

any comments appreaciated ...
B-)

max · **Posted:** Tue Apr 13, 2004 11:52 am

how about just adding config="someconfig.xml" as an attribute ?

bruehlicke · **Posted:** Tue Apr 13, 2004 12:21 pm

Cool ! .. You mean something like

<target name="gen-src" unless="gen-src.not.required">
<taskdef
name="hbm2java"
classname="net.sf.hibernate.tool.hbm2java.Hbm2JavaTask"
classpathref="gen-src.class.path"
/>

<hbm2java output="${src.dir}" classpathref="gen-src.class.path" config="${dev.home}/conf/hbm2java.xml">
<fileset dir="${src.dir}/com/xyz/hibernate/model">
<include name="**/*.hbm.xml"/>
</fileset>
</hbm2java>

</target>

What should the hbm2java.xml than contain to trigger the --config ?

.. sorry my dum question but I am not a ant/xml star ... hope you can give me a hint
The stuff above at least is OLK - now I just need to know how the hbm2java.xml should look like...

thanx
B-)

max · **Posted:** Tue Apr 13, 2004 12:55 pm

how about reading about it in the manual about the config.xml file ? ;)

javalistic · **Joined:** Wed Apr 14, 2004 4:01 pm **Posts:** 2

Did anyone figure out how to do this?

max · **Posted:** Wed Apr 14, 2004 5:21 pm

read the docs in section 19.1.2

It explains what a config.xml can contain.

But for the lazy ones here is the contents for the default handling in hbm2java:

Code:

<codegen>
    <generate renderer="net.sf.hibernate.tool.hbm2java.BasicRenderer"/>
</codegen>

and that can be used by either by --config in a cmd line or config= attribute in ant

bruehlicke · **Posted:** Thu Apr 15, 2004 9:55 am

Jeg takker og bukker !

Finally I got it to work here the Hbm mapping file with the new meta attributes needed and the ant build file and the config file (hbm2java.xml) containing what Max just posted.

Max: Is there an option to turn on by default that the system should generate the hashcode and equals without having to give every file the new 2 meta tags ? I see that for one of my mapping files where I used the composite-id the hashcode and equals where created even without specifying the new Meta attributes ....

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 2.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd" >

<hibernate-mapping default-cascade="save-update">

<class
name="com.xyz.hibernate.model.Company"
table="COMPANY"
>

<meta attribute="implement-equals">true</meta>

<id
name="companyS"
column="COMPANY_S"
type="java.lang.String"
length="19">
<meta attribute="use-in-equals">true</meta>
<generator class="com.xyz.hibernate.SurrogateKeyGenerator" />
</id>

<property
name="companyCode"
column="COMPANY_CODE"
type="java.lang.String"
length="40"
/>

</class>
</hibernate-mapping>

The ant file to generate code I use is like where the hbm2java.xml file contains exact what Max has posted.

<target name="gen-src" unless="gen-src.not.required">
<taskdef
name="hbm2java"
classname="net.sf.hibernate.tool.hbm2java.Hbm2JavaTask"
classpathref="gen-src.class.path"
/>

<hbm2java output="${src.dir}" classpathref="gen-src.class.path" config="${dev.home}/conf/hbm2java.xml">
<fileset dir="${src.dir}/com/xyz/hibernate/model">
<include name="**/*.hbm.xml"/>
</fileset>
</hbm2java>

</target>

Thanx Max !

max · **Posted:** Thu Apr 15, 2004 10:03 am

"Jeg takker og bukker !" - hvilen Houston, Texas i Danmark er det lige du kommer fra ? ;)

back to ya' question:

meta tags are per default inheritable (as you can read in the docs...)
so if you want something to work for all things - simply put the <meta> at a higher level! Like in the config.xml !

;)