What is the use of chain Endchain in ABAP?

What is the use of chain Endchain in ABAP?

CHAIN and ENDCHAIN define processing chain in SAP ABAP Dynpro Flow logic. User can execute FIELD and MODULE between CHAIN and ENDCHAIN. Also, the statements between CHAIN and ENDCHAIN form a processing chain which cannot be nested.

What is chain Endchain in module pool?

chain-endchain. When this command is used, all of the fields on the screen that belong to the processing chain (all of the fields listed in the field statements) are made ready for input again. Other fields are not ready for input.

What is Poh in SAP?

Process on Help-Request (POH) : F1 Help Whenever F1 is pressed the POH event for the specified data element is executed. If the PROCESS ON HELP-REQUEST event does not exist in the process logic of a screen, the documentation of the field in the ABAP Dictionary is taken as a basis and displayed.

What is an on input statement in SAP ABAP?

ON INPUTThe ABAP module is called only if the field contains a value other than its initial value. This initial value is determined by the data type of the field: Space for character fields, zero for numeric fields. Even if the user enters the initial value of the screen as the initial value, the module is not called.

What is SAP chain statement?

The statements FIELD and MODULE can be executed between CHAIN and ENDCHAIN. The statements between CHAIN and ENDCHAIN form a processing chain. Processing chains cannot be nested. The statement CHAIN can be specified in the event blocks at PAI and PBO, is ignored, however, in the event block at PBO.

How does Itertools chain work?

It is a function that takes a series of iterables and returns one iterable. It groups all the iterables together and produces a single iterable as output. Its output cannot be used directly and thus explicitly converted into iterables. This function come under the category iterators terminating iterators.

What are the types of internal tables in SAP ABAP?

There are 3 ABAP Internal Table Types:

  • Standard Tables. Access by linear table index or key. Response time proportional to table size.
  • Sorted Tables. Filled in sorted order. Access by linear index or sort key. Response time logarithmically proportional to table size.
  • Hashed Tables.

How do you give F4 help in module pool?

First, go to SE11 and create your own search help (if you don’t know how to create a search help please feel free to ask me, it is very easy). Now in your module pool program go to the layout of your screen. Now when you see the attributes of this field in the Dict tab you will find the field Search Help.

What is the difference between on input and on request in module pool?

Assigned Tags Even if the user enters the initial value of the screen as the initial value, the module is not called. (ON REQUEST, on the other hand, does trigger the call in this case.) The module is only called if the user has entered something in the field.

What are the three kinds of internal table?

Internal Table Types

  • Standard tables. Most appropriate for general table operations. Accessed by referring to the table index (which is the quickest access method).
  • Sorted tables. Most appropriate where the table is to be filled in sorted order. Sorted tables are filled using the INSERT statement.
  • Hashed tables.
  • October 8, 2022