cant find annotated class using <mapping package> in c

ewentworth · **Joined:** Tue Oct 11, 2005 11:11 am **Posts:** 2

I would like to use the <mapping package="..."> tag to find my annotated classes instead of the more explicit <mapping class="..">. But when I use the mapping package tag, it doesn't find my entities.

hibernate version
using hibernate annotations version 3.1 beta 6 with hibernate 3.1 rc1 and hibernate tools 3.0.0 alpha 4a

mapping files
Here is my ant task I am running:

Code:

<target name="db-gen-create-sql" depends="compile,create-hibernate-cfg,copy-generated-resources" description="creates ddl schema file from hibernate files">
   <echo message="creating table schema in ${build.dir} with the name of 'create-tables.sql'"/>

   <hibernatetool destdir="${build.dir}" >
      <annotationconfiguration configurationfile="${hibernate.config.file}" />
      <hbm2ddl export="true" console="false" drop="false" create="true"
                    outputfilename="${project.name}-create.ddl" delimiter=";"/>
   </hibernatetool>

</target>

Here is the configuration that DOESNT work

Code:

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <property name="hibernate.connection.url">jdbc:oracle:thin:@localhost:1521:iesdevl</property>
        <property name="show_sql">true</property>
        <property name="dialect">org.hibernate.dialect.OracleDialect</property>
        <property name="query.factory_class">org.hibernate.hql.classic.ClassicQueryTranslatorFactory</property>
        <property name="hibernate.connection.username">xxxx</property>
        <property name="hibernate.connection.password">xxxx</property>
        <property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
      <property name="hibernate.default_schema">dbridge</property>
      <mapping package="edu.uwec.lts.adminservices"/>
    </session-factory>
</hibernate-configuration>

Only difference to make it work is to use <mapping class> instead

Code:

when I use the mapping package tag, the ant task processes normally, but no schema is generated. When I use the <mapping class> tag the schema is generated. It seems to be ignoring the <mapping package> tag altogether.

off topic:
I am also trying to instantiate a hibernate session using an IoC framework (Spring) and passing in package names vs. explicit class references there too, and same problem occurs. I can show this code if you like, too.

ewentworth · **Joined:** Tue Oct 11, 2005 11:11 am **Posts:** 2

Upon further looking...

It was politely brought to my attention that I misunderstood the use of the <mapping package> tag for the hibernate config file (hibernate.cfg.xml). It, of course, is used to find package level annotations on package-info.java, not to provide a scan capability to find annotated classes within a package.

Although, this is what we were hoping for: a way to provide a pattern to indicate the annotated classes, rather than explicitly listing them. Due to the modularization of our project, we would rather not have a large list of all annotated entities centrally maintained, but be discovered in run-time depending on which modules were in the classpath for the given configuration.

Has anyone else desired this feature?

max · **Posted:** Tue Oct 18, 2005 12:34 pm

ejb3 has autodiscovery stuff - dont know if that is applicable to hibernateannotations too

aswinnair · **Joined:** Tue Oct 11, 2005 11:03 am **Posts:** 4

You are in luck if you are using hibernate with Spring framework. Spring has a nice org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean bean implementation that takes a list of packages to scan for the annotated classes. The property is "packagesToScan" I think.