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ABAP Keyword Documentation → ABAP − Reference → Calling and leaving program units → Calling Processing Blocks → Calling Procedures → Method Calls → Dynamic Method Call →Syntax
CALL METHOD dynamic_meth { parameter_list
| parameter_tables }.
Effect
This statement calls the method dynamically specified in dynamic_meth(Dynamic Invoke). Actual parameters are assigned to formal parameters of the method, either statically using parameter_list or dynamically using parameter_tables. The syntax of parameter_list is the same as that in the explicit parameter specification for the static method call.
Notes
Security Note
If used wrongly, dynamic calls of program units can present a serious security risk. Names of program
units that are passed to a program from the outside must be checked thoroughly before being used in dynamic calls. The system class CL_ABAP_DYN_PRG, for example, can be used to do this. See
Dynamic Calls.
System Fields
The system field sy-subrc is set to 0 when a method is called. If a
non-class-based exception is raised that was handled by the assignment of a value, then sy-subrc is set to this value.
Example
Dynamic call of the static method gui_download of global class cl_gui_frontend_services for storing the content of an internal table in a file on the current presentation server. The names of the class and method are specified in the strings class and meth. The interface parameters are passed in the internal table ptab and return values are assigned to the exceptions of the method are assigned using table etab. Exceptions that occur at the method call itself are handled in a TRY control structure with statement CATCH.
DATA: line TYPE c LENGTH 80,
text_tab LIKE STANDARD TABLE OF line,
filename TYPE string,
filetype TYPE c LENGTH 10,
fleng TYPE i.
DATA: meth TYPE string,
class TYPE string,
ptab TYPE abap_parmbind_tab,
etab TYPE abap_excpbind_tab.
DATA: exc_ref TYPE REF TO cx_sy_dyn_call_error.
class = 'CL_GUI_FRONTEND_SERVICES'.
meth = 'GUI_DOWNLOAD'.
filename = 'c:\temp\text.txt'.
filetype = 'ASC'.
ptab = VALUE #( ( name = 'FILENAME'
kind = cl_abap_objectdescr=>exporting
value = REF #( filename ) )
( name = 'FILETYPE'
kind = cl_abap_objectdescr=>exporting
value = REF #( filetype ) )
( name = 'DATA_TAB'
kind = cl_abap_objectdescr=>changing
value = REF #( text_tab ) )
( name = 'FILELENGTH'
kind = cl_abap_objectdescr=>importing
value = REF #( fleng ) ) ).
etab = VALUE #( ( name = 'OTHERS' value = 4 ) ).
TRY.
CALL METHOD (class)=>(meth)
PARAMETER-TABLE
ptab
EXCEPTION-TABLE
etab.
CASE sy-subrc.
WHEN 1.
...
...
ENDCASE.
CATCH cx_sy_dyn_call_error INTO exc_ref.
MESSAGE exc_ref->get_text( ) TYPE 'I'.
ENDTRY.
Catchable Exceptions
CX_SY_DYN_CALL_EXCP_NOT_FOUND
CX_SY_DYN_CALL_ILLEGAL_CLASS
CX_SY_DYN_CALL_ILLEGAL_METHOD
CX_SY_DYN_CALL_ILLEGAL_TYPE
CX_SY_DYN_CALL_PARAM_MISSING
CX_SY_DYN_CALL_PARAM_NOT_FOUND
CX_SY_REF_IS_INITIAL
Non-Catchable Exceptions