ABAP Testing The Unit Test Framework for OOP HowTo Guide by SAP PRESS

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Persistent Classes To use the Persistence Service for objects, the classes of these objects must have been created as persistent classes in Class Builder. The term persistent class does not imply that a class is persistent (every class is persistent as a template for objects).

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ABAP Persistent Classes: Coding without SQL 68 15 21,724 Introduction This weblog was really sparked by a conversation that I had the other day. I was talking with a Java developer who was fairly new to the SAP world, but claimed to already be an ABAP expert. He was commenting on the ABAP programming language.

Understanding Persistence Service

Figure 1 Creating the Persistent Class Persistent classes are like normal classes and are created using the class builder (se24). The only difference while creating a persistent class is the tick mark Persistent Class, which identifies the class as a persistent class.

ABAP Testing The Unit Test Framework for OOP HowTo Guide by SAP PRESS

Creating a Persistent Class (SAP Library - ABAP Workbench Tools) Relevancy Factor: 20.0. You need to use the prefix CL_ (or a corresponding naming convention in the customer namespace) for Persistent Class es. The auxiliary classes use the same convention.

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The Persistence Service is a software layer that manages persistent objects. This software layer consists of a general part and a class-specific part. It is made up of global classes and interfaces from the Class Library. The class-specific part is specially generated for each persistent class.

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Procedure In the Repository Browser (transaction SE80), navigate to the package in which you want to create a persistent class. In the context menu of the package, choose Create → Class Library → Class. The Create Class dialog box appears. In the Class Type group box, choose Persistent Class.

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Today we will see how to use the Persistent Object services in the test application. You can find all these under ABAP Objects. Get the Agent Object by accessing the public attribute AGENT in the agent class. For Read access, get the persistent object by using the GET_PERSISTENT method of the agent object. To create entry using the persistent.

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persistent class Special class whose attributes are associated with database tables using object-relational mapping. Can be created using Mapping Assistant in Class Builder. The objects of persistent classes are managed by object services . persistent class

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To create a persistent class from the initial screen of the Object Navigator (SE80): Select the category Class/Interface in from the object list. Enter the name of the new class according to the naming conventions . Confirm your entries with ENTER . Confirm that you want to create the class. The system displays the Create Class. dialog box.

Leading practices ABAP Persistent Classes Advanced Solutions

This simple class now let me easily generate simple classes for selection. 1) Generate persistent class. 2) Define local variable for query. 3) Call query with agent and query structure. The provided class is just a prototype. If you wish - you can copy it and try to use it.

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1 Here is a dynamic solution, query_data is the result returned from the call to get_persistent_by_query ( ). In the end the data will be stored in structured table

, you can use this to display in your ALV. Note that there is little control over the order of the field.

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The agent class manages the persistent objects at runtime. The medhods of the agent class can be mostly redefined. Besides of them, the agent class can be extended with new attributes, methodes etc. More details to the Object Services under ABAP - Object Services Standard BAPIs

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Persistent class ABAP Program stays in the local ABAP memory for the session only till the runtime of that program. This data lives only as long as its context - that is, as long as its associated procedure (for local procedure data); its object (for attributes of classes); or its program (for global program data).

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CL_persistent The class CL_persistent is a class created as a persistent class using Class Builder. The objects of this class are managed by the persistence service. These objects are known as managed objects (note that a managed object does not necessarily have to be a persistent object).

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The Persistence Service lets the ABAP programmer work with relational database data in an object-oriented way. So we're talking here about an [ORM| http://en.wikipedia.org/wiki/Object-relational_mapping] framework.

A part of the persistent class diagram of the safety casebase. Download Scientific Diagram

Step 1 Create ABAP package Open ABAP Development Tools (ADT) and select your ABAP Cloud Project you created in Create an SAP BTP ABAP Environment Trial User. Right-click on ZLOCAL and select New > ABAP Package. Create a new ABAP package: Name: ZTRAVEL_APP_XXX Description: Package for travel XXX Superpackage: ZLOCAL Check Add to favorite packages.