Report 7B :- Validating Parameter Range

nuraniuscc

Hi,

I have 2 parameters, namely, Begin Date and End Date. The one validation I need to do is ensure that the difference between those 2 dates is a maximum of 6 months.

How do I do that?
Where can I put in my Custom error message? OR
Is there a default error message?

Please explain step by step, So I can use it rightaway.

Thanks
Nurani Sivakumar

bhanley

You can validate parameters in any of the scripting events available to you throughout the report's life cycle. The initialize event of the report design is one option. From here you will be able to get the parameter's value using the following code:

reportContext.getParameterValue("pParameterName");

If you need to store the upper and lower limits on the range you are evaluating, try using hidden parameters on the report. Your users will not see them and you can easily override them at run time should the range change over time. Then access the hidden parameters in the scripting block jsut as you access the public parameters.

Once you have evaluated the parameters, you can choose to act on the results of the evaluation however you see fit. One option would be to have your report contain two elements. The default element is what is seen should the parameters pass validation. The other element is an error condition shown to the user should they supply invalid parameters. Make the error condition a hidden element. Should the validation routine fail, hide the default element in the report and make the error description element visible.

Hope this helps.