*TREE_FROM_DEPENDENCIES Function
Syntax
Arguments
- Tree_List
Data formatted to populate a tree control.
- data
Parent-child pairs of values.
- format
A character string that defines how to parse each line in Tree_List for the parent and child data. Format must contain 'P' and 'C' placeholders to designate the parent and child. For example, if the data in Format is of the form parent|child, then Format should be P|C. "P" = parent value, "C" = child value
- separator
Optional. Default = CR-LF. The separator between pairs of parent-child values.
Description
Transform child/parent pairs into a tree.
Discussion
The *TREE_FROM_DEPENDENCIES() function transforms parent-child pairs of values into a format suitable for displaying in a tree control. This function is useful for taking hierarchical information that is stored in a flat table (i.e. shared keys representing parent and child) and populating a tree control with that data.
Example
? *tree_from_dependencies(<<%str% Beverage|Wine Beverage|Beer Beer|Lager Beer|Ale Lager|Cervesa Lager|Pilsener Ale|Stout Ale|Porter Ale|Weizen Wine|White Wine Wine|Red Wine White Wine|Reisling White Wine|Chardonnay White Wine|Pinot Gris Red Wine|Cabernet Red Wine|Shiraz Red Wine|Nebbiola Red Wine|Pinot Noir Red Wine|Merlot %str%,"p|c") = Beverage Beverage|Wine Beverage|Wine|White Wine Beverage|Wine|White Wine|Reisling Beverage|Wine|White Wine|Chardonnay Beverage|Wine|White Wine|Pinot Gris Beverage|Wine|Red Wine Beverage|Wine|Red Wine|Cabernet Beverage|Wine|Red Wine|Shiraz Beverage|Wine|Red Wine|Nebbiola Beverage|Wine|Red Wine|Pinot Noir Beverage|Wine|Red Wine|Merlot# Beverage|Beer Beverage|Beer|Lager Beverage|Beer|Lager|Cervesa Beverage|Beer|Lager|Pilsener Beverage|Beer|Ale Beverage|Beer|Ale|Stout Beverage|Beer|Ale|Porter Beverage|Beer|Ale|Weizen
See Also