Bug 136522 [Regression]DateTime parameter can't be drag to the layout
Steps to reproduce: 1.New a date time parameter 2.Drag it to the layout Actual result: A BIRT exception occurred. Plug-in Provider:Eclipse.org Plug-in Name:BIRT Model Plug-in ID:org.eclipse.birt.report.model Version:2.1.0.N20060412-2230 Error Code:Error.PropertyValueException.CHOICE_NOT_FOUND Error Message:The choice value "dateTime" is not found.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dnd/InsertInLayoutUtil.java
return isHandleValid( (DataSetHandle) insertObj )
						&& ( (DataSetHandle) insertObj ).getDataSource( ) != null
						&& handleValidateDataSet( targetPart );
		}
		else if ( insertObj instanceof ResultSetColumnHandle )
		{
			return handleValidateDataSetColumn( (ResultSetColumnHandle) insertObj,
					targetPart );
		}
		else if ( insertObj instanceof ScalarParameterHandle )
		{
			return isHandleValid( (ScalarParameterHandle) insertObj )
					&& handleValidateParameter( targetPart );
		}
		return false;
	}
	/**
	 * Checks if all the DataSetColumn has the same DataSet.
	 * 
	 * @param array
	 *            all elements
	 * @return false if not same; true if every column has the same DataSet or
	 *         the element is not an instance of DataSetColumn
	 */
	protected static boolean checkSameDataSetInMultiColumns( Object[] array )
	{
		if ( array == null )
			return false;
		Object dataSet = null;
		for ( int i = 0; i < array.length; i++ )