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JDBC in DD?

  Asked By: Danielle    Date: Nov 25    Category: Java    Views: 818
  

I have a small doubt in EJB's..

Where does the database(JDBC) info (oracle or sybase or db2)
is stored in each of these cases. Container Managed
and Bean Managed.

CMP:??
BMP:??

Is the JDBC info stored in DD(Deployment Descriptor)?

Can anyone send a sample DD.

Out of the blue:
I had/have a doubt whether computers support fluorescent colors?

24.5 million colors.. and is fluroscent one of these?

If any one has idea can someone give hex values for
fluorescent green
fluorescent pink

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2 Answers Found

 
Answer #1    Answered By: Bonifaco Garcia     Answered On: Nov 25


In bmp  these things such as getConnection(), createStatement(),
executeQuery() and ... are used in ejbLoad().
Instead in cmp  persistent fields for EJBs are included in a DD file which
in WebLogic is ejb-jar.xml
for example:


<cmp-field>
<field-name>name</field-name>
</cmp-field>
<cmp-field>
<field-name>age</field-name>
</cmp-field>
...

Plus some little things in weblogic-ejb-jar.xml
JDBC stuff such as datasource, table and also mapping between the fields
defined in ejb-jar.xml and the actual attributes of the underlying table
goes into weblogic-ejb-jar.xml

...
<ejb-name>MyEJB</ejb-name>
<data-source-name>MyDS</data-source-name>
<table-name>MyCustomers</table-name>
<field-map>
<cmp-field>name</cmp-field>
<dbms-column>cust_name</dbms-column>
</field-map>
<field-map>
<cmp-field>age</cmp-field>
<dbms-column>cust_age</dbms-column>
</field-map>

 
Answer #2    Answered By: Estella Mitchell     Answered On: Nov 25


As you may know I am in NY and working to have another dedicated server
in east coast (NY, Boston, Albany ...) so if you guys have a client
(serious ones) let me know. It would be linux (or similar) with database
connectivity. JSP/J2EE/PHP would be supported ...

Also I can do hosting for charity stuff or more importantly for Important
Interesting Persian(Iranian) sites.

 
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