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Persistent Object: Why do we need Persistent Object Service: To better understand the need of the persistent objects we need to first understand the concept of the transient data. The local data for the program like Attributes of the class, or program data is known as the transient data.
Normally, with ABAP we load the data into our transient data, work on that and put it back to the database table if required. At this point of time, our data exists in the two places: Transient data ABAP program local data and in the appropriate database table or other storage medium which is the persistent data. To avoid having the same data at the same time in two different contexts, we should use the persistent objects.
Because by definition, the persistent data is the data which will be preserved beyond the run time. For SAP, we could have the persistent data in form of the Database table or file operations. Example Code: Find the attachment. However, the Persistence Service within Object Services allows application developers to work with persistent objects. The Persistence Service can be thought of as a software layer between the ABAP program and the data repository that is, the database , which allows you to save the attributes of objects with a unique identity, and then load them again when you need them.
Development objects are the individual parts of an ABAP application like reports, transactions, and function modules. Program components such as events, screens, menus, and function modules are also development objects. Objects that programs can share are development objects as well. These shareable objects include database fields, field definitions, and program messages. A package is a container for objects that logically belong together; for example, all of the objects in an application.
A package is also a type of development object.
An example of a package might be General Ledger Accounting. When you create a new object or change an existing object, the system asks you to assign the object to a package. When you complete work on a development object like a program, screen, or menu, you generate a runtime version of the object.
This runtime version is stored, along with the object, in the Repository. An application consists of several runtime objects that are processed by the work processes in the SAP System. In a standard SAP installation, development and live operation take place in separate systems. New applications are created in the development system and transported to the production system. Daily work takes place in the production system which uses runtime versions created in the development system.
The division between production and development systems is recommended because changes to an existing ABAP application take immediate effect. To prevent disturbances in daily work flow in the production system, all developments are carried out in development systems designed especially for this purpose. The Transport Organizer The Transport Organizer is used to move applications from the development system to the production system.
The Workbench Organizer also provides version control and tracking. Naming Standards Nomenclature: A Developer key — Allows a user to develop custom objects can be new programs, database tables, functions, or any other work bench object. The Developer Key is entered only one time and it registers the user-name for Development roles.
ECC 6. Introduction 6 2. SAP Navigation 7 a. History of ABAP 11 4. ABAP Repository 14 6. ABAP Workbench 16 a. Transaction Codes 7. Development Objects and Packages b. Storing Development Objects c.
Transport Organizer 8. ABAP Keys 23 a. ABAP Developer key b. Data Storage in SAP 26 ABAP Dictionary 27 Database Tables 31 a.
Table Attributes b.
Creating a New Database Table Database Table Views 43 a. Database View b. Projection View Parameter ID 63 a. Display b.
Creating New Parameter ID Overview b. Create Function Group c. Create Function Module ABAP Reporting Dialog Programming a. Tabstrip Control ABAP Debugger b. Runtime Analysis c. Performance Trace Data Transfer Methods a. Features b. Standard Functions for ALV Saving and Printing of Reports List of Transaction Code Conclusion and Credits Ver: SAP Overview and Navigation a. Login On: Standard Toolbar Icons: To display it, click the arrow Print current screen Cancel Exit current task without saving data Save Saves the work Hard Copy Exit Returns to initial screen without saving data Create shortcut Create a shortcut to any report, transaction Create session Create a new session Find and Find next Search for data in current screen; extend research c.
Standard Exit Keys: New Session Icon: ABAP Keys: Access Key a.
Published on Apr 7,