Package com.ebasetech.xi.api

Interface TableRowIterator

All Superinterfaces:

java.io.Serializable

public interface TableRowIterator
extends java.io.Serializable

The TableRowIterator interface represents a collection of table rows, and provides methods for iterating through the table rows either forwards or backwards, to address the underlying columns and their values.

Example:

 var rows = tables.ORDERS.rows;
 while (rows.next())
 {
   tables.ORDERS.ORDER_VAT.value = tables.ORDERS.ORDER_VALUE.value * vatRate;
 }
 

Further documentation.

Since:

V4.4

Method Summary

Modifier and Type	Method	Description
boolean	first()	Sets the table's current row to point to the first row.
int	getSize()	Returns the size i.e.
boolean	last()	Sets the table's current row to point to the last row.
boolean	next()	Sets the table's current row to point to the next table row and returns false if no more rows exist.
boolean	previous()	Sets the table's current row to point to the previous table row and returns false if no more rows exist.

Method Details

next

boolean next()

Sets the table's current row to point to the next table row and returns false if no more rows exist.

All table rows referenced by an iterator can be processed within a loop within while (iter.next()) as shown in the example below.

When all rows have been processed by repeated calls to next(), this method returns false and the current row is reset to its original value i.e the current row number before any methods on this TableRowIterator were invoked. If all rows are not processed i.e. this method does not return false, the current row is not reset.

Javascript example:

 var orders = tables.ORDERS;
 var iter = orders.getRows();
 while (iter.next())
 {
   orders.ORDER_VAT.value = orders.ORDER_VALUE.value * vatRate;
 }
 

Returns:

false when all rows have been processed, true otherwise

Since:

V4.4

See Also:

Table.getCurrentRow()

previous

boolean previous()

Sets the table's current row to point to the previous table row and returns false if no more rows exist. This method works the same as the next() method except that rows are returned in reverse order. The current row can be positioned to the last row using the last() method}.

Returns:

false when all rows have been processed, true otherwise

Since:

V4.4

See Also:

Table.getCurrentRow()

first

boolean first()

Sets the table's current row to point to the first row.

Returns:

false when no rows exist, true otherwise

Since:

V4.4

See Also:

Table.getCurrentRow()

last

boolean last()

Sets the table's current row to point to the last row.

Returns:

false when no rows exist, true otherwise

Since:

V4.4

See Also:

Table.getCurrentRow()

getSize

int getSize()

Returns the size i.e. number of rows, within the iterator.

Returns:

number of rows

Since:

V4.4