Change History (Reuse Library)

In the previous article, we learned, how to embed a change log in the custom business object. Here we are going to learn, how to capture the same in the ABSL scripting.

Change History is a SAP reuse library, which contains a function that you can use to retrieve data from a supplied Business Object and its nodes that were changed during the given period based on the Platform Change Document service.

Prerequisites

Should have a knowledge on Change History (Business Object).

For more information about the change history Business Object creation, see http://blog.sankaranss.com/2017/06/22/change-history/.

Description

Syntax: <BusinessObject>.Read(“NameSpace”, UUID, NodeID, FromDate, ToDate, User );

1. BusinessObjectName defines the name of the Business Object.
2. Define the namespace, e.g,. AP.CRM.Global:Lead.
3. UUID: Retrieve current instant UUID. To get current UUID, Context.GetCurrentIdentityUUID()
4. NodeID provides the NodeID of the Root node for the requested instance.
5. The other four parameters are optional:
   • NodeName: Restricts the result to given node
   • ToChangeDateTime: If no value is given the current date and time is taken
   • FromChangeDateTime: If no value is given 30 days earlier than the ToChangeDateTime is used
   • ChangerUUID: Only the changes made to the respective user are returned

Example for SAP Business Object

// get all changes of SAP Business Object Lead based upon Lead Root node ID

var myLeadRootNodeId : UUID;
myLeadRootNodeId = …
var currentUser = Context.GetCurrentIdentityUUID();
var myChanges = ChangeHistory.Read( “AP.CRM.Global:Lead”, myLeadRootNodeId, “Root”, this.FromDateTime, this.ToDateTime, currentUser );

Example for Custom Business Object

// get all changes of Custom Business Object MyOwnBusinessObject based upon own BO Root node ID

var currentUser = Context.GetCurrentIdentityUUID();
var myChanges = ChangeHistory.Read(“MyOwnBusinessObject”,  this.GetObjectNodeReference().UUID, “Root”);

Testing

Debug the code and check the output as shown in the below screenshot.

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Reference: © 2017 SAP SE. All rights reserved.