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/ParameterDialog.java
selectionChioceList.addItem( choice );
						}
					}
				}
				inputParameter.setDataSetName( null );
				inputParameter.setValueExpr( null );
				inputParameter.setLabelExpr( null );
			}
			else
			{
				
				inputParameter.setValueType( DesignChoiceConstants.PARAM_VALUE_TYPE_DYNAMIC );
				inputParameter.setDataSetName( dataSetChooser.getText( ) );
				inputParameter.setValueExpr( getExpression( columnChooser.getText( ) ) );
				
				
				if ( displayTextChooser.getText( ).equals( "<None>" ) )
				{
					inputParameter.setLabelExpr( "" );
				}
				else
				{
					inputParameter.setLabelExpr( getExpression( displayTextChooser.getText( ) ) );
				}
			}
			
			inputParameter.setHelpText( UIUtil.convertToModelString( helpTextEditor.getText( ),
					false ) );
			
			inputParameter.setCategory( formatCategroy );