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
catch ( SemanticException e )
				{
					ExceptionHandler.handle( e );
				}
			}
			else if ( COLUMN_DISPLAY_TEXT.equals( property ) )
			{
				try
				{
					( (ScalarParameterHandle) actualElement ).setLabelExpr( DEUtil.getColumnExpression( (String) value ) );
				}
				catch ( SemanticException e )
				{
					ExceptionHandler.handle( e );
				}
			}
			if ( actualElement == newParameter )
			{
				if ( ( isSingle( ) || ( newParameter.getDataSetName( ) != null && newParameter.getDataSetName( )
						.length( ) > 0 ) )
						&& ( !COLUMN_NAME.equals( property ) ) )
				{
					try
					{
						inputParameterGroup.getParameters( ).add( newParameter );
					}
					catch ( SemanticException e )
					{
						ExceptionHandler.handle( e );
						return;