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Implementing Delta Query Support with Syclo Exchange TablesLocate this document in the navigation structure

Implement delta calculations for an enity using the Syclo foundation framework.

Context

This example describes the minimum set up required for adding changes to an exchange table whenever a business partner is inserted, modified, or deleted.
  1. Creating Tables, Structures, and Triggers
    Create the table, structures, and triggers that collects entity changes and passes them to the Syclo Framework.
  2. Creating Exchange Objects in Syclo
    An exchange object combines technical objects, such as an exchange class handler, an exchange table, and a lock object, with configuration rules. It allows you to control runtime change-detection behavior by defining specific rules for different scenarios.
  3. Configuring Delta Tokens
    Enable delta query support via a Syclo exchange table by modifying an existing GET_ENTITYSET method to supply a delta token for the initial query.
  4. Retrieving Entity Set Deltas
    Redefine the GET_ENTITYSET_DELTA method in the runtime data provider class to return only new or changed entities from the change pointer table, based on the timestamp in the delta token.

Task overview: Implementing Delta Queries

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