hbm2ddl makes drop statements with drop="false" se

tharrisx · **Posted:** Tue Dec 13, 2005 4:19 am

I'm using annotations in my pojo classes, and I have an Ant task to output a DDL file from those classes. But, even though I specify drop="false" in the hbm2ddl task, the drop statements are still generated. Why? Bug?

I'm using MySQL 4.0.17 with MySQL Connector 3.0.14.

Here's an excerpt from my Ant file:

Code:

  <target name="generate-schema" depends="">
    <hibernatetool destdir="${sql.dir}">
      <classpath>
        <path refid="compile-classpath"/>
        <pathelement location="${build.classes}"/>
      </classpath>
      <annotationconfiguration configurationfile="./hibernate.cfg.xml"/>
      <hbm2ddl create="true" drop="false" export="false" outputfilename="whatever.sql"/>
    </hibernatetool>
  </target>

And here's the contents of my hibernate.cfg.xml:

Code:

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
    "-//Hibernate/Hibernate Configuration DTD//EN"
    "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
  <session-factory name="java:hibernate/SessionFactory">
    <property name="hibernate.connection.url">jdbc:mysql://192.168.2.5:3306/housing</property>
    <property name="hibernate.connection.username">housing</property>
    <property name="hibernate.connection.password">housing</property>
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="hibernate.dialect">org.hibernate.dialect.MySQLInnoDBDialect</property>
    <property name="hibernate.default_catalog">housing</property>
    <property name="hibernate.show_sql">false</property>
    <property name="hibernate.use_sql_comments">false</property>
    <mapping package="org.jini.housing.data"/>
    <mapping class="org.jini.housing.data.Housing"/>
    <mapping class="org.jini.housing.data.HousingProperty"/>
    <mapping class="org.jini.housing.data.Neighborhood"/>
    <mapping class="org.jini.housing.data.Tenant"/>
    <mapping class="org.jini.housing.data.TenantProperty"/>
    <mapping class="org.jini.housing.data.TenantType"/>
    <mapping class="org.jini.housing.data.TenantVersion"/>
    <mapping class="org.jini.housing.data.TenantVersionProperty"/>
  </session-factory>
</hibernate-configuration>

Hibernate version:
Hibernate 3.1rc1
Hibernate Annotations 3.1beta6
Hibernate Tools 3.0alpha1

tharrisx · **Posted:** Tue Dec 13, 2005 4:34 am

After downloading and replacing the hibernate-tools.jar with the newest one, 3.1.0beta2, I now get:

Code:

java.lang.IllegalAccessError: tried to access method org.hibernate.tool.hbm2ddl.SchemaExport.execute(ZZZZ)V from
 class org.hibernate.tool.ant.Hbm2DDLExporterTask
        at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1225)
        at org.apache.tools.ant.Project.executeTarget(Project.java:1185)
        at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:40)
        at org.apache.tools.ant.Project.executeTargets(Project.java:1068)
        at org.apache.tools.ant.Main.runBuild(Main.java:668)
        at org.apache.tools.ant.Main.startAnt(Main.java:187)
        at org.apache.tools.ant.launch.Launcher.run(Launcher.java:246)
        at org.apache.tools.ant.launch.Launcher.main(Launcher.java:67)
Caused by: java.lang.IllegalAccessError: tried to access method org.hibernate.tool.hbm2ddl.SchemaExport.execute(ZZZZ)V from class org.hibernate.tool.ant.Hbm2DDLExporterTask
        at org.hibernate.tool.ant.Hbm2DDLExporterTask.execute(Hbm2DDLExporterTask.java:55)
        at org.hibernate.tool.ant.HibernateToolTask.execute(HibernateToolTask.java:143)
        at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
        at org.apache.tools.ant.Task.perform(Task.java:364)
        at org.apache.tools.ant.Target.execute(Target.java:341)
        at org.apache.tools.ant.Target.performTasks(Target.java:369)
        at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1216)
        ... 7 more
--- Nested Exception ---
java.lang.IllegalAccessError: tried to access method org.hibernate.tool.hbm2ddl.SchemaExport.execute(ZZZZ)V from class org.hibernate.tool.ant.Hbm2DDLExporterTask
        at org.hibernate.tool.ant.Hbm2DDLExporterTask.execute(Hbm2DDLExporterTask.java:55)
        at org.hibernate.tool.ant.HibernateToolTask.execute(HibernateToolTask.java:143)
        at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
        at org.apache.tools.ant.Task.perform(Task.java:364)
        at org.apache.tools.ant.Target.execute(Target.java:341)
        at org.apache.tools.ant.Target.performTasks(Target.java:369)
        at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1216)
        at org.apache.tools.ant.Project.executeTarget(Project.java:1185)
        at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:40)
        at org.apache.tools.ant.Project.executeTargets(Project.java:1068)
        at org.apache.tools.ant.Main.runBuild(Main.java:668)
        at org.apache.tools.ant.Main.startAnt(Main.java:187)
        at org.apache.tools.ant.launch.Launcher.run(Launcher.java:246)
        at org.apache.tools.ant.launch.Launcher.main(Launcher.java:67)

[/code]

max · **Posted:** Tue Dec 13, 2005 4:38 am

use the hibernate that comes with the tools (or just use the just released hibernate 3.1)

tharrisx · **Posted:** Tue Dec 13, 2005 4:52 am

Will that work with Annotations 3.1beta6?

I realize that these subprojects are all in development/beta, but I'm a little confused.

Hibernate Annotations 3.1beta6 requires Hibernate 3.1rc1. That is the latest version available.

Tom

max · **Posted:** Tue Dec 13, 2005 5:08 am

annotations should soon be out with a full release. Until then try to just use the annotaitons that i bundle with the tools (just for the schema generation)

tharrisx · **Posted:** Tue Dec 13, 2005 5:18 am

Using the following jars from the HibernateTools-3.1.0.beta2.zip solved both problems!

For others' sanity, here's the latest compatible versions of the libraries:
hibernate3.jar - 3.1.rc3
hibernate-annotations.jar- 3.1beta7
hibernate-tools.jar - 3.1.0beta2

I'm not sure if that beta2 zip really contains hibernate 3.1rc3 or the new release version, if perhaps, the manifest file in there wasn't updated.

Thanks again!

Tom

max · **Posted:** Tue Dec 13, 2005 5:50 am

they are the latest build that worked with the tools - now that 3.1 has come out life should be much easier soon ;)