versioning documents in webdynpro abap abap

8/2/2019 Versioning Documents in Webdynpro Abap ABAP

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versioning files in abap

webdynpro...

Step1:Create a Transparent table as shown in the figure.

Note: Make employee Number foreign key from table pa0003.

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Create a value range for document category.

Step 2:

Create a webdynpro component and create 2 views and 2 windows as shown.

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DOCNR TYPE ZPHOTO-DOCNR.

DOCVR TYPE ZPHOTO-DOCVR.

EMPID TYPE ZPHOTO-PERNR.

NAME TYPE ZPHOTO-SNAME.

FILE_TYPE TYPE STRING.

FILE_NAME TYPE STRING.

FILE_SIZE TYPE STRING.

CATEGORY TYPE ZPHOTO-DOCUMENT_CAT.

FILE_CONTENTS TYPE XSTRING.

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sTEP 3:

Design a view as shown.

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Step 4:

Create 2 buttons, one for upload and one more to view all employees and also

create on actions as shown.

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Write the code for respective method to work.

METHOD onactionupload .

DATA lo_nd_n_upload TYPEREFTO if_wd_context_node.

DATA lo_el_n_upload TYPEREFTO if_wd_context_element.

DATA ls_n_upload TYPE wd_this->element_n_upload.

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DATA lo_nd_n_file_download TYPEREFTO if_wd_context_node.

DATA lt_n_file_download TYPE wd_this->elements_n_file_download.

DATA ls_file_upload TYPE zphoto.

DATA: lv_flag TYPE zphoto-docnr,

lv_flag1 TYPE zphoto-dokvr,

itab TYPETABLEOF zphoto.

* navigate from to via lead selection

lo_nd_n_file_download = wd_context->get_child_node( name = wd_this-

>wdctx_n_file_download ).


lo_nd_n_upload = wd_context->get_child_node( name = wd_this->wdctx_n_upload

).

* get element via lead selection

lo_el_n_upload = lo_nd_n_upload->get_element( ).

* @TODO handle not set lead selection

IF lo_el_n_upload ISNOTINITIAL.

* get all declaredattributes

lo_el_n_upload->get_static_attributes(

IMPORTING

static_attributes = ls_n_upload ).

* ls_n_uploadwill contain the File name file type and file contents *

*****************************************************************************

******

SELECTMAX( docnr ) INTO lv_flag FROM zphoto.

ls_n_upload-docnr = lv_flag + 1.************** **************************************************************

*****

ls_n_upload-file_size = XSTRLEN( ls_n_upload-file_contents ).

*****************************************************************************

****

* ls_n_upload-docnr= sy-dbcnt + 1.

*****************************************************************************

****

ls_file_upload-docnr = ls_n_upload-docnr.

ls_file_upload-pernr = ls_n_upload-empid.""

ls_file_upload-file_name = ls_n_upload-file_name.

ls_file_upload-file_type = ls_n_upload-file_type.

ls_file_upload-file_size = ls_n_upload-file_size.

ls_file_upload-document_cat = ls_n_upload-category.

ls_file_upload-sname = ls_n_upload-name.""

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ls_file_upload-file_contents = ls_n_upload-file_contents.

****Logic for Version Management***

*loop at ls_file_upload.

IF ls_n_upload-file_type = ls_file_upload-file_type AND

ls_n_upload-empid = ls_file_upload-pernr AND

ls_n_upload-category = ls_file_upload-document_cat.

SELECTMAX( dokvr ) INTO lv_flag1 FROM zphoto WHERE

pernr = ls_n_upload-empid

AND FILE_NAME = LS_FILE_UPLOAD-FILE_NAME

AND FILE_TYPE = ls_file_upload-file_type

AND FILE_SIZE = ls_file_upload-file_SIZE

AND document_cat = ls_n_upload-category

AND SNAME = LS_N_UPLOAD-NAME.

* AND FILE_CONTENTS = LS_N_UPLOAD-FILE_CONTENTS.

ls_n_upload-dokvr = lv_flag1 + 1.

ELSE.

ls_n_upload-dokvr = 1.

* else.

*ls_n_upload-dokvr = lv_flag+ 1.

ENDIF.

*

ls_file_upload-dokvr = ls_n_upload-dokvr.

* endloop.

****Logic for Version Management***

INSERT zphoto FROM ls_file_upload.

IF sy-subrc = 0.

SELECT * INTO CORRESPONDING FIELDSOFTABLE lt_n_file_download FROM zph

oto.

lo_nd_n_file_download->bind_table( new_items = lt_n_file_download set_initial_elements = abap_true ).

ENDIF.

ENDIF.

ENDMETHOD.

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method ONACTIONVIEW_DETAILS .

DATA lo_window_manager TYPEREFTO if_wd_window_manager.

DATA lo_api_component TYPEREFTO if_wd_component.

DATA lo_window TYPEREFTO if_wd_window.

lo_api_component = wd_comp_controller->wd_get_api( ).

lo_window_manager = lo_api_component->get_window_manager( ).lo_window = lo_window_manager->create_window(

window_name = 'POPUPW'

* title =

* close_in_any_case = abap_true

message_display_mode = if_wd_window=>co_msg_display_mo

de_selected

* close_button = abap_true

button_kind = if_wd_window=>co_buttons_ok

message_type = if_wd_window=>co_msg_type_none

default_button = if_wd_window=>co_button_ok

).

lo_window->open( ).

endmethod.

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Write the below code to initialize the view.

method WDDOINIT .

DATA lo_nd_n_upload TYPEREFTO if_wd_context_node.

DATA lo_el_n_upload TYPEREFTO if_wd_context_element.

DATA ls_n_upload TYPE wd_this->element_n_upload.

DATA lo_nd_n_file_download TYPEREFTO if_wd_context_node.

DATA lt_n_file_download TYPE wd_this->elements_n_file_download.

data ls_file_upload TYPE Zphoto.


lo_nd_n_file_download = wd_context->get_child_node( name = wd_this-

>wdctx_n_file_download ).


lo_nd_n_upload = wd_context->get_child_node( name = wd_this-

>wdctx_n_upload ).

* get element via lead selection

lo_el_n_upload = lo_nd_n_upload->get_element( ).

select

docnr

dokvr

pernr

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sname

file_name

file_type

file_size

document_cat

file_contents

from zphoto

intoTABLE lt_n_file_download.

SORT lt_n_file_download BY EMPID ASCENDING.

lo_nd_n_file_download->bind_table( new_items = lt_n_file_download set_initial

_elements = abap_true ).

endmethod.

Step 5:Create a node in the second view as shown.

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Initialize the view .

method WDDOINIT .

DATA lo_nd_emp TYPEREFTO if_wd_context_node.

DATA lt_emp TYPE wd_this->elements_documentdetails.

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lo_nd_emp = wd_context->get_child_node( name = wd_this-

>wdctx_documentdetails ).

* @TODO handle non existant child

* IF lo_nd_emp IS INITIAL.

* ENDIF.

* * @TODO compute values

* * e.g. call a model function

*

select * from zphoto intotable lt_emp .

lo_nd_emp->bind_table( new_items = lt_emp set_initial_elements = abap_true

).

endmethod.

Map the first view Main to the first window,

And the second view to the second window(For popup)

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Create an application and test.

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Note: Upload bmp images only.

Future Scope: To make the same work for all the other file

formats.

Test giving the same employee number, name, and

document category and upload the same file to see the

versioning. You can upload the same file as many times

required making the change in the contents thus satisfying

the need to maintain the files according to category and

versions.

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