Bug 177439 Need an easy way to determine default value for a dynamic parameter
Currently, I have to bring up the data set editor, preview the results in the data set and make a mental note of the value to use for a report parameter that depends on a data set. It would be nice to have a drop down on the default value field, such as <Select value> which when selected queries the data set and presents me with a list to select from.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/CascadingParametersDialog.java
}
			if ( element == newParameter )
			{
				if ( isSingle( ) )
				{
					if ( element == getFirstParameter( ) )
					{
						if ( !COLUMN_DATA_SET.equals( property ) )
						{
							return false;
						}
					}
					else
					{
						if ( !COLUMN_VALUE.equals( property ) )
						{
							return false;
						}
					}
				}
				else if ( !COLUMN_DATA_SET.equals( property ) )
				{
					return false;
				}
			}
			if ( COLUMN_VALUE.equals( property ) )
			{
				if ( getDataSetColumns( (ScalarParameterHandle) element, true ).length == 0 )
				{
					return false;