Bug 207119 Newly added binding row._outer["a"] is not shown in the list of group key [0004]
Description: Newly added binding row._outer["a"] is not shown in the list of group key. Build number: 2.2.1.v20071022-0630 Steps to reproduce: 1. New a table table1 binding to CUSTOMERS, insert table2 binding to ORDERS in table1. 2. Add a Column Binding to table2, set row._outer["CUSTOMERNUMBER"] as expression. 3. Add a group to table2, and check the Group On drop-down list. Expected result: Column Binding is listed. Actual result: No Column Binding is listed. Error log: N/A
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/data/ui/util/DataUtil.java
return null;
						}
					}
				}
			}
		}
		return ExpressionUtil.createJSParameterExpression( ( (OdaDataSetParameterHandle) paramDefn ).getParamName( ) );
	}	
	
	/**
	 * To check whether the object with the specific type should be converted
	 * 
	 * @param type
	 * @return true if should be converted
	 */
	private static boolean isToBeConverted( String type ) 
	{
		return type.equals( DesignChoiceConstants.PARAM_TYPE_STRING )
		|| type.equals( DesignChoiceConstants.PARAM_TYPE_DATETIME )
		|| type.equals( DesignChoiceConstants.PARAM_TYPE_TIME )
		|| type.equals( DesignChoiceConstants.PARAM_TYPE_DATE );
	}
	/**
	 * Delete the last "_" part
	 * 
	 * @param name
	 * @return String
	 */
	private static String prepareConfigVarName( String name )
	{