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Posted to users@cocoon.apache.org by Michael Wolf <wu...@scirem.de> on 2003/12/10 12:40:47 UTC

ojb in flow

Hello,

I'm trying to use ojb from the flow.
To start I only want to use the ojb PersistenceBroker like it is shown 
in the GT2003 slides from Christian Haul.

I have installed the ojb block, but without jdo (i didn't include 
jdo.jar and jori.jar)

So far I wasn't able to do it.
What classes do I have to import to make it run?
Is there a special place to put them.

Thanks,

Michael


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Re: ojb in flow

Posted by Antonio Gallardo <ag...@agsoftware.dnsalias.com>.
Michael Wolf dijo:
> My question was more about the flow.
>
> To use the PersistenceBroker I tried:
>
> importClass(Packages.org.apache.ojb.broker.PersistenceBroker);
> importClass(Packages.org.apache.ojb.broker.PersistenceBrokerFactory);
> importClass(Packages.org.apache.ojb.broker.util.ui.AsciiSplash);
>
> function ojbTest(){
> broker = PersistenceBrokerFactory.defaultPersistenceBroker();
> }
>
> when calling the function I get the following error message:
> java.lang.NoClassDefFoundError

Ok. I understand. To be honest I don't use OJB inside javascript, because
it turns to me to be hardly debugable. Note I don't said you can not debug
javascript at all.

Also it looks very complicated to me. I prefer to build a serie of handler
and call them from inside the flow. As a Java IDE I use eclipse
(http://www.eclipse.org/)

In eclipse I create a project with the following libs:

db.jar -- created using druid - it is a container for JDO beans.
(autogenerated).
jdo.jar
jdori.jar
cocoon-ojb-block.jar
avalon-framework.jar
commons-lang-2.0.jar
commons-beanutils-1.6.1.jar (optional)
commons-jxpath-20030909.jar (optional)
db-ojb-1.0rc520031210.jar

most of the libs are from cocoon.

Then I build a dbHandler.jar with the Handler classes (one for each woody
form) using eclipse.org.

Copy the dbHandler.jar to your WEB-INF/lib and restart tomcat.

After that we can call the classes from dbHandler.jar from inside script.

Example, this script manage the creation of a user:

cocoon.load("resource://org/apache/cocoon/woody/flow/javascript/woody2.js");
cocoon.load("context://resources/flow/autentificar.js");

function createform(form) {
    if (autorizar("auth")) {
        form.showForm("create-form-display");

        var bean = new Packages.net.agssa.sga.Auth_user();
        var handler = new
Packages.net.agssa.sga.forms.auth_user.Auth_userHandler();
        var factory;

        form.save(bean);
        try {
            factory =
cocoon.getComponent(Packages.org.apache.cocoon.ojb.jdo.components.JdoPMF.ROLE);

            handler.insert(bean, factory);
        } finally {
            cocoon.releaseComponent(factory);
        }
        success("Users", "Users inserted successfully", "Create a another
user?","create");
    }
}

BTW, the Handler written in javascript will look very ugly to my eyes.
This is my view point.

I hope this would help. If not feel free to ask again :-D

Best Regards,

Antonio Gallardo

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Re: ojb in flow

Posted by Michael Wolf <wu...@scirem.de>.
My question was more about the flow.

To use the PersistenceBroker I tried:

importClass(Packages.org.apache.ojb.broker.PersistenceBroker);
importClass(Packages.org.apache.ojb.broker.PersistenceBrokerFactory);
importClass(Packages.org.apache.ojb.broker.util.ui.AsciiSplash);

function ojbTest(){
broker = PersistenceBrokerFactory.defaultPersistenceBroker();
}

when calling the function I get the following error message:
java.lang.NoClassDefFoundError

Michael




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Re: ojb in flow

Posted by Antonio Gallardo <ag...@agsoftware.dnsalias.com>.
Michael Wolf dijo:
> Hello,
>
> I'm trying to use ojb from the flow.
> To start I only want to use the ojb PersistenceBroker like it is shown
> in the GT2003 slides from Christian Haul.
>
> I have installed the ojb block, but without jdo (i didn't include
> jdo.jar and jori.jar)

PLease update from the CVS. I just committed a new OJB lib to allow the
use of JDO 1.01

Just copy jdo.jar and jdori.jar in WEB-INF/lib

> So far I wasn't able to do it.
> What classes do I have to import to make it run?

Check if you have uncommented the OJB block in your local.blocks.properties.

> Is there a special place to put them.

If you want to include them in the war, then copy the jdo.jar and
jdori.jar in /$COCOON/lib/local

then rebuild, the libs will be included in you war file.

Best Regards,

Antonio Gallardo

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