how hbm2java make tostring method

afattahi · **Joined:** Mon Jan 24, 2005 11:56 am **Posts:** 24

Hi,

We want to create java code and cfg files from database. So we used
[code]

<hibernatetool destdir="${destdir}" >
<jdbcconfiguration
packagename="com.mycomp.entities"
configurationfile="${hibernate.cfg}"

/>

<hbm2java jdk5="true" />
<hbm2hbmxml />
[/code]

All works fine. But I want that my generated classes impliment tostring, equals and hash map. What property should I add to <hbm2java> task? Is it supported? I don not want to use Eclipse Plug in, just and task.

I found that when you generate java from hbm2hbmxml u must add some meta tags, but what about java code from database?

Another issue: how can i set the defualt id generator. Should I change the velocity templates?

Regards,
Alireza Fattahi

max · **Posted:** Mon Mar 06, 2006 8:35 pm

not implmented for reverse engineering. you can customize the templates if you want it know.

btw. implementing equals/hashcode is not safe to do automatically since there is no indication of what is the unique part of an entity (which cannot be the id, see www.hibernate.org/109.html ...)

afattahi · **Joined:** Mon Jan 24, 2005 11:56 am **Posts:** 24

Hi,

Can I change the default generator from <generator class="assigned" /> to some thing in ant task else or I should change template?

Regards,
Alireza Fattahi

max · **Posted:** Wed Mar 08, 2006 7:20 am

currently easiest done by implementing a custom reverseengineeringstrategy.

something class

class MyRevEng extends DelegatingReverseEngineeringStrategy {

String getTableIdentiferStrategyName(TableIdentifier t) {
return "native"; //or do some selection depending on the value of t
}
}

afattahi · **Joined:** Mon Jan 24, 2005 11:56 am **Posts:** 24

Hi,

For the first issue, I found away:
1) I changed the persistentclass.hbm.vm and add in "use-in-tostring" to it.
<meta attribute="use-in-tostring"> true </meta> you can add other code generator parameters here take a look at http://www.hibernate.org/hib_docs/tools ... degen.html

2) I made ddl to java in a two phases task. First from ddl to hbmxml with jdbcconfiguration configuration, second from hbm to java with configuration. It is as below (hope other find it use full):

Code:

<project name="Hibernate-Tool" default="ddl2hbmxml">
    <property name="sourcedir" value="${basedir}/src"/>
    <property name="targetdir" value="${basedir}/bin"/>
    <property name="librarydir" value="${basedir}/exploded/WEB-INF/lib"/>
    <property name="docdir" value="${basedir}/doc"/>
    <property name="sqlfile" value="${docdir}/dal/Schema.sql"/>
    <property name="hibernate.cfg" value="${basedir}/src/Maps/hibernate.cfg.xml"/>
    <property name="destdir" value="${basedir}/src"/>
    <path id="libraries">
        <fileset dir="${librarydir}">
            <include name="*.jar"/>
        </fileset>
        <pathelement location="${sourcedir}"/>
        <pathelement location="${sourcedir}/Maps/"/>
        <pathelement location="${targetdir}"/>
    </path>
    <target name="ddl2hbmxml" description="db>>cfg">
        <taskdef
                name="hibernatetool"
                classname="org.hibernate.tool.ant.HibernateToolTask"
                classpathref="libraries"/>
        <hibernatetool destdir="${destdir}">
            <jdbcconfiguration
                    packagename="com.bonakdar.dal.entities"
                    configurationfile="${hibernate.cfg}"
                    />
            <hbm2hbmxml/>
            <hbm2cfgxml destdir="${destdir}/Maps"/>
            <!--<hbm2doc destdir="${docdir}/dal"/>-->
        </hibernatetool>
    </target>
    <target name="hbm2java" description="cf>>java" depends="ddl2hbmxml">
        <taskdef
                name="hibernatetool"
                classname="org.hibernate.tool.ant.HibernateToolTask"
                classpathref="libraries"/>
        <hibernatetool destdir="${destdir}">
            <configuration
                    configurationfile="${hibernate.cfg}"
                    />
            <hbm2java jdk5="true"/>
            <hbm2ddl destdir="${docdir}/dal" />
        </hibernatetool>
    </target>
</project>

Regards,
Alireza Fattahi