Class RowInfo

Object
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   +--RowInfo

class RowInfo

Contains all the information related to a row pertaining to a ScrollTable or MetapushTable that is about to be displayed in a screen table. In these cases, the same data row can be displayed more than once on different cells, because of scrolling operations. Each time, a call to the "onRowUpdate" event handler is issued and a RowInfo instance is supplied. Specifically, for each row it supplies:

• The current values for the row fields
• The related formatted values to be shown in the cells

- ScrollTable.onRowUpdate()
- MetapushTable.onRowUpdate()

Constructor Detail

RowInfo

RowInfo()

Used by Lightstreamer to provide a value object to each call of the various onRowUpdate event handlers.

See:
- ScrollTable.onRowUpdate()
- MetapushTable.onRowUpdate()

getCellValue

String getCellValue(<FieldDescriptor> field)

Inquiry method that gets the formatted value for a specified field. The formatted value is the text that is actually written in the cell.

Parameters:
field - a field descriptor object for the requested field. A String field name or a Number representing a field position can also be used directly, instead of a field descriptor object.

Returns:
A formatted text; it cannot be null, unless a nonexistent field is specified.

getServerValue

String getServerValue(<FieldDescriptor> field)

Inquiry method that gets the value for a specified field. If the involved row came from a Server update, then it is the value as received from the Server in case of a subscribed field or set in Table.onItemUpdate() in case of an extra field. If the incoming row was supplied through a call to VisualTable.showValues(), then it is the value as supplied in that call.

Parameters:
field - a field descriptor object for the requested field. A String field name or a Number representing a field position can also be used directly, instead of a field descriptor object.

Returns:
A value. Null is an allowed value for a field, too; a null value is also returned for an extra field that was not assigned.