Validations in a database block before commit

Hi Folks,
I have a database block with three fields : Agency, Start Date, End Date. Agency has a List Of values. I need to change the LOV contents depending upon the values already entered. For example any agency with end date as null should not appear in the list and if end date is entered for an agency then it should start appearing in the list...etc. I have to consider both committed and Uncomitted data. Is there a way to traverse through the block without actually navigating through it. The user should not know see the cursor moving anywhere.
Any suggestions and ideas are most welcome.
Thanks a lot
Pranati

Forms does a select for update when a database item is changed, so the locks have already been established regardless of whether you do a post. You can confirm this behaviour by adding an on-lock trigger.
Your requirement to read other records in the block without navigating CAN be achieved using calculation properties, and I have used this technique several times in situations like yours.
Create another agency field in a control block.
Create a hidden non-database numeric item in your block with a calculation property of formula. The formula should be a user-written function with parameters of control.agency, datablock.agency, datablock.date. Write the function in the form program units: if the agencies match and the date exists return 1 else return 0.
Create a field in the control block with a summary calculation property doing a sum of the other cxalculated item.
Now all you need to do is copy the agency code from your current record into control.agency and hey presto ,the summary field instantly tells you how many other records for that agency have dates.
An alternative method would be to maintain a copy of your block in a record group, but that could get rather complicated.

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thanx for your reply..
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exa...
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Thanks,
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915968 wrote:
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null

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Welcome to the forum.
Unfortunately you posted this question in the Database - General forum. Try posting in the Forms forum
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The result of the code above is that only the last record fetched shows up in
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The problem was with the following code segment:
tmp_curr_rec_id := get_block_property( :system.current_block, current_record );
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After omitting these two lines, the code worked properly.
Thansk for all whoe replied.
Regards,
Tamas

Validations in a database block before commit

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