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post_change trigger on item [message #515485]

Mon, 11 July 2011 18:41

nik.gujeran
Messages: 11
Registered: July 2011

Junior Member

Hello,

I am very new to oracle forms. I am asked to change an existing field (Category_Desc) from a data block (applications) from a current form with a different field (Facility) from another table (Places) that is not used in the current data blocks. How do i do that and how should i populate the data... The common string between the table used in the form (applications) and the non used table (Places) is the ID No.

Could someone help me make this change and also with a possible trigger to generate the data....

Thank you so much in advance.

Nick

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Re: post_change trigger on item [message #515501 is a reply to message #515485]

Tue, 12 July 2011 00:05

Littlefoot
Messages: 21823
Registered: June 2005
Location: Croatia, Europe

Senior Member
Account Moderator

To populate that item (that doesn't belong to a table data block is based on), Use

WHEN-VALIDATE-ITEM trigger when inserting new values
POST-QUERY when querying existing data

Query (i.e. SELECT statement looks the same in both cases, something like

select p.facility
  into :block.facility
  from places p
  where p.some_id = :block.some_id;

Include exception handlers if you wish (such as NO-DATA-FOUND).

A POST-CHANGE trigger you mentioned in a topic title is not to be used any more. In the old days (Forms 3.0), it was the only option you had, but now it is here only for backward compatibility so - don't use it.

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Re: post_change trigger on item [message #515642 is a reply to message #515501]

Tue, 12 July 2011 10:39

nik.gujeran
Messages: 11
Registered: July 2011

Junior Member

Thank you so very much littlefoot...

I really appreciate your help...

thanks
Nick

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