GeneratingClasses and mappingFiles from database schema/ sql with ant/maven

Question

hi,
I have an application using the the following ant script (it creates mapping files - hbms and sql schema for my database, basing on xdoclet for hibernate), (application also use spring beans in configuration file):
<?xml version="1.0" encoding="UTF-8"?>
<project name="demo" default="generate">
     <property file="build.properties" />
      <target name="init">
           <echo message="Clening..."/>
           <delete dir="target" failonerror="false"/>
           <echo message="Creating folders..."/>
        <mkdir dir="target"/>
        <mkdir dir="target/classes"/>
        <mkdir dir="target/jar"/>
           <echo message="Defining xdoclet2 ant task..."/>
        <path id="xdoclet2.task.classpath">
            <fileset dir="lib/xdoclet">
                <include name="*.jar"/>
            </fileset>
        </path>
        <path id="project.classpath">
            <fileset dir="lib">
                <include name="*.jar"/>
            </fileset>
        </path>
        <taskdef
            name="xdoclet2"
            classname="org.xdoclet.ant.XDocletTask"
            classpathref="xdoclet2.task.classpath"
            />
    </target>
     <target name="generate" depends="init" description="Cleans and builds everything.">
           <echo message="Generating hbms..."/>
        <xdoclet2>
            <fileset dir="source/src">
                <include name="**/*Model.java"/>
            </fileset>
            <component
                classname="org.xdoclet.plugin.hibernate.HibernateMappingPlugin"
                destdir="target/hbm"
                version="2.0"
                />
        </xdoclet2>
           <echo message="Compiling..."/>
          <javac classpathref="project.classpath" destdir="target/classes"
               srcdir="source/src">
          </javac>
           <echo message="Creating jar..."/>
          <jar destfile="target/jar/demo.jar">
               <fileset dir="target/classes"/>
               <fileset dir="resources"/>
               <fileset dir="target/hbm"/>
          </jar>
        <path id="hibernate.task.classpath">
            <fileset dir="lib">
                <include name="*.jar"/>
            </fileset>
            <fileset dir="target/jar">
                <include name="*.jar"/>
            </fileset>
        </path>
           <echo message="Creating database schema..."/>
         <taskdef name="schemaexport"
              classname="net.sf.hibernate.tool.hbm2ddl.SchemaExportTask"
              classpathref="hibernate.task.classpath"/>
              <schemaexport
                  properties="resources/hibernate.properties"
                  quiet="no"
                  text="no"
                  drop="no"
                  delimiter=";"
                  output="target/schema-export.sql">
                  <fileset dir="target/hbm">
                      <include name="**/*.hbm.xml"/>
                  </fileset>
              </schemaexport>
     </target>
</project>EXAMPLE MAPPING FILE:
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 2.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping>
  <class table="DEMO_ADDRESS" name="amg.demo.model.AddressModel">
    <id unsaved-value="null" name="id">
      <generator class="native">
        <param name="sequence">id_seq</param>
      </generator>
    </id>
    <version unsaved-value="undefined" name="version" column="version" type="java.lang.Long"/>
    <property name="firstName"/>
    <property name="lastName"/>
    <property name="type" type="amg.demo.model.AddressTypeEnum"/>
    <property name="zipCode"/>
  </class>
</hibernate-mapping>I wish I would know how to make an inverse operation - I mean having the sql database schema I should generate classes and propably the mapping xml-es.
Could u please give me some example applications/ant or maven scripts with some database sql schemat or some not very complicated links to the tutorials concerning this problem?

Answer 1

If you're using Eclipse check out some of the Hibernate tools. I have used these before:
http://www.eclipse-plugins.info/eclipse/search.jsp?query=hibernate