A part of the persistent class diagram of the safety casebase
ABAP Object Services. In this blog you are going to read some information about ABAP Object Services and how to create persistent class object with single-table using mapping assistant tool, create object instance with class agent, consumer perspective and record converted into database table. #1. Creating Persistent Object with single-table.
Leading practices ABAP Persistent Classes Advanced Solutions
ABAP Persistent Classes: Coding without SQL 68 15 21,738 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.
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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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1. So why cant we just use the the same ourselves. What is the advantage of creating a persistent object and then using get/set methods? IMO, this only makes things complex. 2. Lets say I want to retrieve multiple records into an internal table: Below is an example from Former Member:
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Persistence Classes: In Class Builder, there is an option to create a "Persistent Class" and once created, the system automatically creates a Class Actor or Class Agent which has the following inheritance relationships. The moment you create a Persistent Class, workbench also generates two additional classes: ZCB_PERSIST_SFLIGHT as the Base Class
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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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Basis Components ABAP Runtime Environment Persistent Class Source: Official SAP Glossary Persistent Class Definition Special class whose attributes are linked to database tables using object relational mapping. Can be created using the Mapping Assistant of the Class Builder. The objects of persistent classes are managed using object services.
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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).
Leading practices ABAP Persistent Classes Advanced Solutions
Once the database table is defined, a persistence class must be defined. In order to define persistent classes, follow these steps: Call transaction SE24. Enter a suitable name of the persistent class to be created. We will create a class by entering the name ZCL_MY_PERSIST. Enter the name in the Class field and click on the Create button.
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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.
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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 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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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
