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Is it possible to check if parameter allows null at rendering time? [message #827530]

Fri, 23 March 2012 13:06

Alexey Romanov

Messages: 263
Registered: May 2010

Senior Member

I want to show a checkbox in a report if a certain parameter allows null values. From IGetParameterDefinitionTask I can get IParameterDefnBase or ParameterHandle, but neither seems to include the data I need. Is there a way to access it?

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Re: Is it possible to check if parameter allows null at rendering time? [message #827539 is a reply to message #827530]

Fri, 23 March 2012 13:23

Alexey Romanov

Messages: 263
Registered: May 2010

Senior Member

Oh right, I can just check if IParameterDefnBase is an IScalarParameterDefn and cast it. But why is IScalarParameterDefn.allowNull() deprecated?

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Re: Is it possible to check if parameter allows null at rendering time? [message #827762 is a reply to message #827539]

Fri, 23 March 2012 19:07

Jason Weathersby

Messages: 9167
Registered: July 2009

Senior Member

I believe it was deprecated in favor of using:

* @return whether the parameter is required.<br>
* the rule for String type is:
* <li>isRequired=true, allowNull and allowBlank are false</li>
* <li>isRequired=false, allowNull and allowBlank are true</li>
* <br>
* for other type like integer:
* <li>isRequired=true, allowNull and allowBlank are false</li>
* <li>isRequired=false, allowNull and allowBlank are true</li>
*/
boolean isRequired( );

Jason

On 3/23/2012 9:23 AM, Alexey Romanov wrote:
> Oh right, I can just check if IParameterDefnBase is an
> IScalarParameterDefn and cast it. But why is
> IScalarParameterDefn.allowNull() deprecated?

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Re: Is it possible to check if parameter allows null at rendering time? [message #827811 is a reply to message #827762]

Fri, 23 March 2012 20:38

Alexey Romanov

Messages: 263
Registered: May 2010

Senior Member

I thought there were 3 different checkboxes for "allow null", "allow blank" and "is required" in parameter editor. Will need to recheck after the weekend.

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