Using Block Evaluate to Sort an Array of Objects

PML Customisation User Guide

Arrays : Arrays of Objects : Using Block Evaluate to Sort an Array of Objects

Using Block Evaluate to Sort an Array of Objects

There are no built-in array methods yet for sorting an array of objects. A possible technique is to use a block evaluation to create an array of keys to sort:

- - Create a block to extract the object member on which to sort

!ExtractKeys = object BLOCK ('!MyEmployees[!Evalindex].Name')

- - Evaluate the block to generate an array of sort keys

!SortKeys = !MyEmployees.Evaluate(!ExtractKeys)

- - Create a new array containing the sorted element positions

!NewOrder = !SortKeys.SortedIndices()

- - Apply the sorted element positions to the original array

!MyEmployees.ReIndex(!NewOrder)

This Evaluate method is the equivalent of the older command:

VAR .. EVALUATE .. INDICES ARRAY

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