Hi,
Jeff Barnes wrote:
> First, I don't understand how to use ejx. I assume the
> methodology code, create deployment descriptor, create
> jboss.xml, create jaws.xml. I have code. I don't have
> any config files. So, I open ejx and click 'New
> ejb-jar.xml'. What next? The only notable actions are
> "new" and "open" and the rest of the menu bar. I don't
> understand how to create the ejb-jar.xml. What works
> for everyone else? Do I need to create the files
> manually then edit with ejx?
I agree. There seems to be no actionable widgets in the GUI to add a new
bean, etc. I gave up and did my xml manually. I have snipped some examples
below so you can copy/apply them.
> Second, I don't know how to use jboss cmp with oracle.
> I have the drivers. What do I do now?
You have to edit conf/jboss.conf and perhaps conf/jboss.properties. Again, I
have snipped samples below.
Note that the <resource-ref> blocks were supplied by Dave Smith in answer to
one of my queries a few days ago. Thanks again Dave!
> Sorry for the naive questions, but I'm at the point
> where I've exhausted the alternatives.
>
> Jeff Barnes
No problem, Jeff. I think you are in good company.
Cheers,
Vaughn
=== place something like this in conf/jboss.conf ===
<MLET CODE = "org.jboss.jdbc.DataSourceImpl"
ARCHIVE="jboss.jar,cloudscape.jar" CODEBASE="../lib/ext/">
<ARG TYPE="java.lang.String"
VALUE="jdbc:cloudscape:CloudscapeDB;create=true">
<ARG TYPE="java.lang.String" VALUE="Cloudscape">
<ARG TYPE="java.lang.String" VALUE="COM.cloudscape.core.JDBCDriver">
<ARG TYPE="java.lang.String" VALUE="">
<ARG TYPE="java.lang.String" VALUE="">
</MLET>
-- Note: the first line is the db access url; second is the db name as you
refer to it in xml and apps; third is name of driver; forth and fifth is
username and password, perhaps "scott" and "tiger" for Oracle :-) Sorry I
don't have a specific Oracle example at this time. Please post your results
when you get it working...
=== perhaps place something like this in conf/jboss.properties ===
cloudscape.system.home=/c:/work/app/cloudscape
-- Note: This line allows cloudscape's in-VM engine to access the database
w/o doing client-server. I think this nullifies the use of the first line
above in the conf/jboss.conf example... You will likely not put anything
like this in your properties file since Oracle will be client-server, but I
am just documenting it here for others.
=== ejb-jar.xml ===
-- Note: This example only shows how to use BMP and how to access the
database from within a session bean by doing direct queries. If you want to
do CMP you may have to use other examples, such as bank.jar (source url
posted a few days ago). I think you will be most interested in the
<resource-ref /> blocks.
<?xml version="1.0" encoding="Cp1252"?>
<ejb-jar>
<description>Some Application</description>
<display-name>SomeApp</display-name>
<enterprise-beans>
<session>
<display-name>MainAccessBean</display-name>
<ejb-name>MainAccessBean</ejb-name>
<home>com.co.app.ejb.main.MainAccessHome</home>
<remote>com.co.app.ejb.main.MainAccess</remote>
<ejb-class>com.co.app.ejb.main.MainAccessBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Bean</transaction-type>
<!-- stateful session bean not working -- commented out for now
<ejb-ref>
<ejb-ref-name>ejb/GroupBean</ejb-ref-name>
<ejb-ref-type>Session</ejb-ref-type>
<home>com.co.app.ejb.group.GroupHome</home>
<remote>com.co.app.ejb.group.Group</remote>
<ejb-link>GroupBean</ejb-link>
</ejb-ref>
-->
<resource-ref>
<description>Default datasource</description>
<res-ref-name>jdbc/Cloudscape</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
</session>
<!-- note: stateful session bean not working at this time
-->
<session>
<display-name>GroupBean</display-name>
<ejb-name>GroupBean</ejb-name>
<home>com.co.app.ejb.group.GroupHome</home>
<remote>com.co.app.ejb.group.Group</remote>
<ejb-class>com.co.app.ejb.group.GroupBean</ejb-class>
<session-type>Stateful</session-type>
<transaction-type>Container</transaction-type>
<ejb-ref>
<ejb-ref-name>ejb/ItemBean</ejb-ref-name>
<ejb-ref-type>Entity</ejb-ref-type>
<home>com.co.app.ejb.item.ItemHome</home>
<remote>com.co.app.ejb.item.Item</remote>
<ejb-link>ItemBean</ejb-link>
</ejb-ref>
<resource-ref>
<description>Default data source</description>
<res-ref-name>jdbc/Cloudscape</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
</session>
<entity>
<display-name>ItemBean</display-name>
<ejb-name>ItemBean</ejb-name>
<home>com.co.app.ejb.item.ItemHome</home>
<remote>com.co.app.ejb.item.Item</remote>
<ejb-class>com.co.app.ejb.item.ItemBean</ejb-class>
<persistence-type>Bean</persistence-type>
<prim-key-class>java.lang.Integer</prim-key-class>
<reentrant>False</reentrant>
<resource-ref>
<description>Default data source</description>
<res-ref-name>jdbc/Cloudscape</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
</entity>
</enterprise-beans>
</ejb-jar>
=== jboss.xml ===
-- Note: I think you will be most interested in the <resource-ref /> blocks.
<?xml version="1.0" encoding="Cp1252"?>
<jboss>
<enterprise-beans>
<session>
<ejb-name>MainAccessBean</ejb-name>
<jndi-name>appname/MainAccess</jndi-name>
<configuration-name>Default Stateless SessionBean</configuration-name>
<!-- stateful session beans not working -- commented out for now
<ejb-ref>
<ejb-ref-name>ejb/GroupBean</ejb-ref-name>
<jndi-name></jndi-name>
</ejb-ref>
-->
<resource-ref>
<res-ref-name>jdbc/Cloudscape</res-ref-name>
<resource-name>jdbc/Cloudscape</resource-name>
</resource-ref>
</session>
<session>
<ejb-name>GroupBean</ejb-name>
<jndi-name>appname/Group</jndi-name>
<configuration-name>Stateful SessionBean</configuration-name>
<ejb-ref>
<ejb-ref-name>ejb/ItemBean</ejb-ref-name>
<jndi-name></jndi-name>
</ejb-ref>
<resource-ref>
<res-ref-name>jdbc/Cloudscape</res-ref-name>
<resource-name>jdbc/Cloudscape</resource-name>
</resource-ref>
</session>
<entity>
<ejb-name>ItemBean</ejb-name>
<jndi-name>appname/Item</jndi-name>
<configuration-name>BMP EntityBean</configuration-name>
<resource-ref>
<res-ref-name>jdbc/Cloudscape</res-ref-name>
<resource-name>jdbc/Cloudscape</resource-name>
</resource-ref>
</entity>
<secure>false</secure>
</enterprise-beans>
-- -- -- from here to eof is standard stuff; get it from an example or
tutorial...
=== finally, a code snippet for doing database access; BMP, that is ===
-- Note: don't for get to do ds.close() in your calling method to return the
connection to the pool...
private Connection connectToDatabase() throws NamingException,
SQLException
{
InitialContext ic = new InitialContext();
DataSource ds = (DataSource) ic.lookup("Cloudscape");
return ds.getConnection();
}
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