JSP-Jdeveloper

Question

I am a web developer using Jdeveloper 3.0 to
develop applications , which are mainly related with data base handlings.
I am not able to add a filed(attribute) to
the form, not able to alter its prompt text,
vary its size?
can you suggestme some tips?
I have built a application module. with business components. Entity object,object view and all ohter for a single table resinding in oracle 8i data base.
When I right click the applicatin module ,
I see a pop up menu wehre if I click test
I am able to see the business component browser,(applet viewer) and here I am able to
see the additioally added attribute, I am able to call my own method added to the entity object.
BUt the smae is not working when a create a JSP using teh same application module?
why?
any additional setting to be done?
please mail me informaations I willbe thankfule to you..
my mail id:
[email protected]
with athat moudle and
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Answer 1

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by JDev Team ():
If I understand, you have created an entity object and a view object in your application module. Is the additional attribute a new column you have added to the table in the database, or a 'calculated attribute' that you added to the view object.
When you see it in the app module tester, is it read only? Do you want it to be read only or editable?
Is the view object based on one EO, or more than one?
What is the code you are using to add the new field to your JSP and set its prompt text?
Laura<HR></BLOCKQUOTE>
SORRY FOR ONCE AGAIN SENDING THE SAME MESSGE:
bUT WE NEED REPLY URGENTLY..
THANKS FOR THE REPLY,
PLEASE NOTE MY REPLY PREFIXED WITH DLV: FOR
YOUR QUERIES.
f I understand, you have created an entity object and a
view object in your application module.
DLV: Yes we have created a entity object for a data
base table and coresponding view object for the same,
through wizard.
Is the additional
attribute a new column you have added to the table in
the
database, or a 'calculated attribute' that you added to
the
view object.
DLV: This addtional attribute is a not a data base
column. we added this addtional attribute using the
wizard(edit view object).
this attribute is "calculated attribute". we also modified
the prompt text for that attribute in the wizard.
When you see it in the app module tester, is it read
only?
Do you want it to be read only or editable?
DLV: this attribute is read only. it is not editable. the
purpose of this attribute is to display the name for a
code, the code is the foreign key in the entity object.
since the name of the code is in some other table in
data base, we used our own method to get the name
using the JDBC calls.
we added this method to the entity object class.
method name
boolean vaidateItemCode(String value){}
when we use the tester ,
we are able to see the new attribute with our set
prompt.
the validating method is also working and returns the
name to the new added attribute, as we expect.
But the same is not woking when we create a JSP for
the above appilcation module.
we are not able see the added attribute in the
Browser(netscape,IE5).
the validation method we wrote is also not working in
this environment.(IE5)
plese see the addtional method which we added to the
entity object
public boolean validateItemCode(String Value) {
try{
DBTransaction dbt = this.getDBTransaction();
PreparedStatement Ps =
dbt.createPreparedStatement("select 'x' from jom_item
where item_code =?",1);
Ps.setString(1,Value);
ResultSet rs = Ps.executeQuery();
if (rs.next())
JOptionPane.showMessageDialog(new Frame(),"Insert
Error","Code Alreadly
Exits",JOptionPane.ERROR_MESSAGE);
return false;
catch(Exception ex)
JOptionPane.showMessageDialog(new Frame(),"error
code "+ex,"ietem
code",JOptionPane.ERROR_MESSAGE);
return false ;
return true;
once we wrote the messgae save and compiled the
same we are able to see the respective change in the
corresponding xml file.
Is the view object based on one EO, or more than one?
DLV: the view objcet is based on only one entity
object.
What is the code you are using to add the new field to
your JSP and set its prompt text?
DLV: we have not written any code in JSP for addeing
the attribute.
we are not able to add a field to the JSP. But wer are
able to modify the existing attribute's prompt using the
setTEXt method of the "editCurrentRecord" bean.
HOPE we have clarified your quiries .
what addtional coding we need to write in JSP so the
addtional method which we wrote for the entity object
is getting reflected in the JSP
and
HOw to add the addtional attirbute(non-database-field)
to the JSP which corresponds to entity objcet/view
object
we have also posted addtional dbouts regarding the
customization of error codes.
ONCE AGAIN THANKS FOR YOUR
REPLY,CONSIDERATION.
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