JTA/JTS for non-EJB & non-J2EE server used

I have a standalone java program which calls methods on 2 java classes (c1, c2) These are Non-EJB/non-RMI/non-CORBA plain java classes.
the method in c1 updates table t1 in database db1
the method in c2 updates table t2 in database db2
I would like to use JTA for conducting a 2PC based transaction. I know this can be done in an application/server or a J2EE container environment because they have built-in Transaction Managers (TM). and one just has to use JNDI to look up the UserTransaction object and then define the transaction boundaries. However, how do I all the above if I don't have access to a J2EE server and an EJB server?
It seems like I would have to use a standalone Transaction Manager (not bundled with the app-server).

Hi,
My company has just released a (beta!) version of a generic java transaction manager. Although it offers some lightweight beans as standard development model, this does not have to be the case: the core idea is an extensible and very advanced transaction kernel. JTA comptable.
This software is server-oriented: the transactional kernel (which also does recovery) startup and shutdown events trigger the start (initialization) and shutdown of your 'extension' classes. This is necessary because otherwise your resources will not be recoverable: if the transaction manager starts up, then it will first do recovery, and therefore your resources need to be available.
You can ask for a beta version through our website:
http://www.atomikos.com
Note, however: we did not yet implement the XA DataSources. Rather, we have a kind of 'external' stored procedures that allow distributed transactions over regular JDBC connections. You would have to implement your solution along this line, or wait for the XA datasources.
If there proves to be a lot of demand,
we can of course speed up development on XA. It is not a very big effort.
Best regards,
Guy
Guy Pardon ( [email protected] )
Atomikos Software Technology: Transactioning the Net
http://www.atomikos.com/

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Hi,
IS there any way to deploy ejbs in J2EE without using the deployment tool? I am using the j2ee 1.2.1.
Thanks,
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When I was in my companies Java Boot Camp (6 week fulltime training in Java technologies) the class was split about 75/25 with 75% of the class using a deployment tool (I think it was WebGain). The other 25% did not use a deployment tool. I was one of the 25%.
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O-R Relations in Sun J2EE SERVER/OC4j

The O-R Mappings in Sun J2EE SERVER using Deployer Tool
Not working ...
I badly need help....

Raj -
You can use an old style (pfd 1 I think) of the ejb2.0 cmp/cmr with OC4J/Orion. The container will manage the relationships for you. I use it quite frequently in fact, though it is not advertised too heavily in the documentation. Once the ejb2.0 spec is incorporated fully into OC4J - you will have to make the odd change here-and-there.
For instance, create your abstract implementation classes -
Dept and Emp...
public abstract class DeptEJB implements EnityBean
//abstract getters/setters
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(etc)
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public void addEmp(Emp emp) throws RemoteException,FinderException,NamingException,CreateException
this.getEmps().add(emp);
public abstract void setEmps(Collection emps);
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After you have done this, you will need to put the relationship into the ejb-jar.xml file....You will need to create an ejb2.0 style descriptor.
For instance....
<?xml version = '1.0' encoding = 'windows-1252'?>
<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
<ejb-jar>
<enterprise-beans>
<entity>
<description>Dept Entity Bean</description>
<display-name>Department</display-name>
<ejb-name>Dept</ejb-name>
<home>mypackage.DeptHome</home>
<remote>mypackage.Dept</remote>
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<persistence-type>Container</persistence-type>
<prim-key-class>java.lang.String</prim-key-class>
<abstract-schema-name>Dept</abstract-schema-name>
<cmp-version>2.X</cmp-version>
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... In that same list (different than current ejb2.0)...
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<cmp-field>
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<entity>
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<prim-key-class>java.lang.String</prim-key-class>
<abstract-schema-name>Emp</abstract-schema-name>
<cmp-version>2.X</cmp-version>
<reentrant>False</reentrant>
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<cmp-field>
<field-name>some_field</field-name>
</cmp-field>
... etc ...
</entity>
... The rest of your enterprise bean information
</enterprise-beans>
..... Next comes the relationships section ...
<<<<<NOTE - this differs somewhat from the final EJB2.0 spec
<<<<and you will need to make any required changes once it
<<<becomes final in OC4J
<relationships>
<ejb-relation>
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          <role-source>
          <ejb-name>Dept</ejb-name>
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          <cmr-field>
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          <cmr-field-type>java.util.Collection</cmr-field-type>
          </cmr-field>
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Okay - that is a quick way to look at it from ejb2.0 (as it exists today in OC4J) container managed relationships. As stated, this will change somewhat when the spec is finalized in OC4J (they are quiet about when that will happen).
If you want to do container managed relationships in ejb1.1 - go to the Orion support site www.atlassian.com and go to this link:
http://kb.atlassian.com/content/orionsupport/articles/complex-or.html
Hope I have helped somewhat and haven't completely confused the issue!
Cheers
Ray
Thanx for the information...
I am Using J2EE RI Server ...
can i have an example Code like Dept-Emp with 1-* Relation Ship
i am trying the same...
Plz clarify...
* Shouls We Create the Relation ship fields and relation
in the DataBase itself
OR
The Container Will Manage for us
Cheers
Raj

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I had the problem with starting server too.
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I didn't think my machine was running another process while I attempted to run j2ee server.
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JTA/JTS for non-EJB & non-J2EE server used

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