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danrega
2023-08-02 14:15:03 +02:00
parent 4de07b25e7
commit 75a4822517
4 changed files with 1237 additions and 438 deletions
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731
06_Dynamic_Programming.md
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4
16_Data_Types_and_Objects.md
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@@ -53,7 +53,7 @@ Data objects:
## ABAP Data Types
ABAP is rich in built-in data types and offers a wide range of options for defining data types and data objects in in different contexts.
ABAP is rich in built-in data types and offers a wide range of options for defining data types and data objects in different contexts.
Data types can be divided into three groups:
- [Elementary data types](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenelementary_data_type_glosry.htm)
- [Complex data types](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abencomplex_data_type_glosry.htm)
@@ -63,7 +63,7 @@ For an overview, see the [ABAP Type Hierarchy](https://help.sap.com/doc/abapdocu
### Elementary Data Types
- Elementary (or scalar) data types are based directly on a set of [built-in ABAP types](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenbuiltin_abap_type_glosry.htm).
- Are not composed of of other data types.
- Are not composed of other data types.
- Are types for holding numeric values, text information, binary data and special types for date and time.
- Are further divided into elementary types of fixed and variable length.
- Note: The length and the memory requirements of data objects of fixed length data types are fixed, that is, they cannot change at runtime. The length and memory requirements of data objects of variable length data types can actually change at runtime, depending on their contents.

73
src/zcl_demo_abap_display.clas.abap
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@@ -4,18 +4,21 @@
* output in the ADT console
*
* -------------------------- NOTE -------------------------------------
* This class is used to display deep types contained in the cheat sheet
* example classes in older ABAP releases.
* This helper class is only used to display complex types contained in
* the example classes of the ABAP cheat sheets in older ABAP releases.
* In newer ABAP releases, this helper class is, in principle, not needed.
* You can use the write method of the classrun interface directly and
* display all types.
*
* The code presented in this class is intended only to support the ABAP
* cheat sheets. It is not intended for direct use in a production system
* environment. The code examples in the ABAP cheat sheets are primarily
* intended to provide a better explanation and visualization of the
* syntax and semantics of ABAP statements, not to solve concrete
* programming tasks. For production application programs, you should
* always work out your own solution for each individual case. There is
* no guarantee for the correctness or completeness of the code.
* Furthermore, there is no legal responsibility or liability for any
* environment. The code examples in the ABAP cheat sheets are primarily
* intended to provide a better explanation and visualization of the
* syntax and semantics of ABAP statements, not to solve concrete
* programming tasks. For production application programs, you should
* always work out your own solution for each individual case. There is
* no guarantee for the correctness or completeness of the code.
* Furthermore, there is no legal responsibility or liability for any
* errors or their consequences that may occur when using the the example
* code.
*
@@ -59,99 +62,61 @@ CLASS ZCL_DEMO_ABAP_DISPLAY IMPLEMENTATION.
ENDMETHOD.
METHOD display.
"Checking data type
DATA(type_descr) = cl_abap_typedescr=>describe_by_data( input ).
CASE type_descr->kind.
WHEN cl_abap_typedescr=>kind_struct.
DATA(struct_descr) = CAST cl_abap_structdescr( type_descr ).
"Checking for complex output
IF struct_descr->struct_kind = cl_abap_structdescr=>structkind_nested
OR line_exists( struct_descr->components[ type_kind = cl_abap_typedescr=>typekind_table ] )
OR line_exists( struct_descr->components[ type_kind = cl_abap_typedescr=>typekind_dref ] )
OR line_exists( struct_descr->components[ type_kind = cl_abap_typedescr=>typekind_oref ] ).
DATA(to_be_serialized) = abap_true.
ELSE.
DATA(display) = mo_out->get( data = input name = name ).
ENDIF.
WHEN cl_abap_typedescr=>kind_table.
DATA(table_descr) = CAST cl_abap_tabledescr( type_descr ).
TRY.
DATA(line_type_struct_descr) = CAST cl_abap_structdescr( table_descr->get_table_line_type( ) ).
"Checking for complex output
IF line_type_struct_descr->struct_kind = cl_abap_structdescr=>structkind_nested
OR line_exists( line_type_struct_descr->components[ type_kind = cl_abap_typedescr=>typekind_table ] )
OR line_exists( line_type_struct_descr->components[ type_kind = cl_abap_typedescr=>typekind_dref ] )
OR line_exists( line_type_struct_descr->components[ type_kind = cl_abap_typedescr=>typekind_oref ] ).
to_be_serialized = abap_true.
ELSE.
display = mo_out->get( data = input name = name ).
ENDIF.
CATCH cx_sy_move_cast_error.
to_be_serialized = abap_true.
ENDTRY.
WHEN cl_abap_typedescr=>kind_class.
to_be_serialized = abap_true.
WHEN cl_abap_typedescr=>kind_intf.
to_be_serialized = abap_true.
WHEN cl_abap_typedescr=>kind_elem.
display = mo_out->get( data = COND string( WHEN name IS INITIAL THEN input ELSE `"` && name && `":` && cl_abap_char_utilities=>newline && input ) ).
WHEN cl_abap_typedescr=>kind_ref.
"Checking for data references
IF type_descr->type_kind = cl_abap_typedescr=>typekind_dref.
"Checking type of dereferenced data object
DATA(type_check_dref) = cl_abap_typedescr=>describe_by_data( input->* ).
"Processing (non-)elementary types
IF type_check_dref->kind = type_descr->kind_elem.
display = mo_out->get( data = COND string( WHEN name IS INITIAL THEN input->* ELSE `"` && name && `":` && cl_abap_char_utilities=>newline && input->* ) ).
ELSE.
to_be_serialized = abap_true.
ENDIF.
ELSE.
to_be_serialized = abap_true.
ENDIF.
ENDCASE.
"Processing complex output by serializiation
FIND SUBSTRING `Data type not yet supported ...` IN display MATCH OFFSET DATA(off) MATCH LENGTH DATA(len).
IF sy-subrc = 0 OR to_be_serialized = abap_true.
"ABAP JSON serializing
DATA(json) = /ui2/cl_json=>serialize( data = input
pretty_name = /ui2/cl_json=>pretty_mode-low_case
@@ -160,16 +125,12 @@ CLASS ZCL_DEMO_ABAP_DISPLAY IMPLEMENTATION.
format_output = abap_true
assoc_arrays = abap_true
assoc_arrays_opt = abap_true ).
IF to_be_serialized = abap_true.
IF name IS INITIAL.
REPLACE PCRE `^` IN display WITH json && cl_abap_char_utilities=>newline.
ELSE.
REPLACE PCRE `^` IN display WITH `"` && name && `":` && cl_abap_char_utilities=>newline && json && cl_abap_char_utilities=>newline.
ENDIF.
"substring found
ELSE.
IF name IS INITIAL.
@@ -177,26 +138,18 @@ CLASS ZCL_DEMO_ABAP_DISPLAY IMPLEMENTATION.
ELSE.
REPLACE SECTION OFFSET off LENGTH len OF display WITH `"` && name && `":` && cl_abap_char_utilities=>newline && json && cl_abap_char_utilities=>newline.
ENDIF.
ENDIF.
mo_out->write( display ).
ELSE.
mo_out->write( display ).
ENDIF.
ENDMETHOD.
METHOD next_section.
mo_out->write( `_________________________________________________________________________________`
&& cl_abap_char_utilities=>newline
&& cl_abap_char_utilities=>newline
&& heading
&& cl_abap_char_utilities=>newline ).
ENDMETHOD.
ENDCLASS.
ENDCLASS.

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src/zcl_demo_abap_dynamic_prog.clas.abap
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