Exporting ALV to Memory2

Transkript

1 Exporting ALV to Memory2 Wir greifen den Trick nach SUBMIT an die ALV-Daten im Office-Format zu gelangen noch einmal auf und zeigen, wie man aus dem XML-String eine Tabelle erhält. In diesem Beispiel rufen wir das Beispielprogramm BCALV_FULLSCREEN_DEMO auf, um mittels ALV-Grid Daten zu erzeugen. Die Flugdatenbank muss natürlich gefüllt sein!! Die grundlegenden Bestandteile sind bereits im vorherigen Artikel erläutert worden. In diesem Programm zeigen wir, wie man die im XML-Format vorliegenden Daten in eine interne Tabelle umwandelt. Das XML-Ergebnis wird dabei Ereignisgesteuert bearbeitet. Das bedeutet: Die XML-Tags werden Stück für Stück durchlaufen und im Programm wird entsprechend darauf reagiert. XML Die zurückgelieferte XML-Struktur, die die Tabelle beschreibt ist recht komplex. Hier ist die Beispiel-XML-Datei zu sehen: Uns interessieren jedoch nur die folgenden Tags: Anzahl der Spalten <Table><Column/><Column/></Table> Zellen und Zelleninhalte <Cell><Data>Inhalt</data></cell>

2 Coding REPORT zz_export_alv_to_memory_demo01. * CLASS lcl_xml DEFINITION CLASS lcl_xml DEFINITION. PUBLIC SECTION. CLASS-METHODS call_report IMPORTING iv_repid TYPE syrepid iv_list TYPE char1. CLASS-METHODS create_table IMPORTING iv_fields TYPE i EXPORTING ed_table TYPE REF TO data. CLASS-METHODS display_data IMPORTING it_table TYPE STANDARD TABLE PREFERRED PARAMETER it_table. ENDCLASS. "lcl_xml DEFINITION * CLASS lcl_xml IMPLEMENTATION CLASS lcl_xml IMPLEMENTATION. METHOD call_report. *== Data DATA lv_guid TYPE guid_32. DATA ls_params TYPE rsparams. DATA lt_params TYPE TABLE OF rsparams. *== Create and export GUIID for ALV lv_guid = cl_salv_export_db_storage=>create_guid( ). EXPORT l_mode = 'M' TO MEMORY ID 'ALV_EXTRACT_MODE'. EXPORT l_guid = lv_guid TO MEMORY ID 'ALV_EXTRACT_GUID'. *== Call Report SUBMIT (iv_repid) WITH SELECTION-TABLE lt_params AND RETURN. "#EC CI_SUBMIT DATA lv_xstring TYPE xstring. DATA lr_stream_factory TYPE REF TO if_ixml_stream_factory. DATA lr_ixml TYPE REF TO if_ixml. DATA lr_istream TYPE REF TO if_ixml_istream. DATA lr_doc TYPE REF TO if_ixml_document. DATA lr_parser TYPE REF TO if_ixml_parser. DATA lv_events TYPE i. DATA lv_number_of_fields TYPE i.

3 DATA lr_event TYPE REF TO if_ixml_event. DATA lv_type TYPE i. DATA lv_current_node TYPE string. DATA lv_current_value TYPE string. DATA lv_cell_index TYPE i. *== Import XML-data from AVL and convert to stream lv_xstring = cl_salv_export_db_storage=>import_xmlstring ( guid = lv_guid ). lr_ixml = cl_ixml=>create( ). lr_stream_factory = lr_ixml->create_stream_factory( ). lr_istream = lr_stream_factory->create_istream_xstring ( string = lv_xstring ). lr_doc = lr_ixml->create_document( ). *== Create parser for document lr_parser = lr_ixml->create_parser( document = lr_doc istream = lr_istream stream_factory = lr_stream_factory ). *== deactivate DOM generation lr_parser->set_dom_generating( space ). *== data for dynamically generated internal table DATA ld_table TYPE REF TO data. FIELD-SYMBOLS <table> TYPE STANDARD TABLE. FIELD-SYMBOLS <row> TYPE ANY. "line of <table>. FIELD-SYMBOLS <cell> TYPE string. *== define Parser events lv_events = if_ixml_event=>co_event_element_pre2 + if_ixml_event=>co_event_element_post + if_ixml_event=>co_event_text_post. *== Register XML-Events lr_parser->set_event_subscription( lv_events ). DO. *== get next event (XML-tag) lr_event = lr_parser->parse_event( ). IF lr_event IS INITIAL. EXIT. *== get type of event lv_type = lr_event->get_type( ). *== New element CASE lv_type.

4 WHEN if_ixml_event=>co_event_element_pre2. *===> Event "PRE2" lv_current_node = lr_event->get_name( ). IF iv_list <> space. WRITE: / lv_current_node. CASE lv_current_node. WHEN 'Column'. *=====> New Column: Add column counter ADD 1 TO lv_number_of_fields. WHEN 'Row'. *=====> New Row IF <table> IS NOT ASSIGNED. *=====> Create table if not done yet create_table( EXPORTING iv_fields = lv_number_of_fields IMPORTING ed_table = ld_table ). ASSIGN ld_table->* TO <table>. *=====> Insert new table line APPEND INITIAL LINE TO <table> ASSIGNING <row>. CLEAR lv_cell_index. WHEN 'Cell'. *======> new cell data: ADD 1 TO lv_cell_index. ASSIGN COMPONENT lv_cell_index OF STRUCTURE <row> TO <cell>. ENDCASE. WHEN if_ixml_event=>co_event_text_post. *===> Event "TEXT" CASE lv_current_node. WHEN 'Data'. *=====> get cell value and assign to table cell <cell> = lr_event->get_value( ). ENDCASE. IF iv_list <> space. lv_current_value = lr_event->get_value( ).. WRITE lv_current_value COLOR COL_TOTAL. WHEN if_ixml_event=>co_event_element_post. *===> Event "POST" IF iv_list <> space. lv_current_node = lr_event->get_name( ). WRITE: lv_current_node COLOR COL_GROUP.

5 ENDCASE. ENDDO. *== Display table IF <table> IS ASSIGNED. display_data( <table> ). ENDMETHOD. "call_report METHOD create_table. *== field catalog DATA lt_fcat FIELD-SYMBOLS <fcat> TYPE lvc_t_fcat. TYPE lvc_s_fcat. *== create field catalog for internal table DO iv_fields TIMES. *== cell APPEND INITIAL LINE TO lt_fcat ASSIGNING <fcat>. <fcat>-fieldname = sy-index. CONDENSE <fcat>-fieldname. <fcat>-tabname = 'GT_TABLE'. <fcat>-inttype = 'g'. "String ENDDO. *== generate internal table from given field catalog CALL METHOD cl_alv_table_create=>create_dynamic_table EXPORTING it_fieldcatalog = lt_fcat IMPORTING ep_table = ed_table EXCEPTIONS generate_subpool_dir_full = 1 OTHERS = 2. ENDMETHOD. "create_table METHOD display_data. *== Data DATA lv_col TYPE i. FIELD-SYMBOLS <row> TYPE ANY. FIELD-SYMBOLS <cell> TYPE string. *== Display all table lines LOOP AT it_table ASSIGNING <row>. NEW-LINE. DO.

6 *== Display each table cell ASSIGN COMPONENT sy-index OF STRUCTURE <row> TO <cell>. IF sy-subrc = 0. lv_col = ( sy-index - 1 ) * 21. WRITE AT lv_col(19) <cell> COLOR COL_POSITIVE. ELSE. EXIT. "from do ENDDO. ENDLOOP. ENDMETHOD. "display_data ENDCLASS. "lcl_xml IMPLEMENTATION *** *** *** SELECTION SCREEN *** *** SELECTION-SCREEN BEGIN OF BLOCK reps WITH FRAME TITLE text-var. PARAMETERS p_repid TYPE syrepid DEFAULT 'BCALV_FULLSCREEN_DEMO'. PARAMETERS p_data RADIOBUTTON GROUP x DEFAULT 'X'. PARAMETERS p_list RADIOBUTTON GROUP x. SELECTION-SCREEN END OF BLOCK reps. START-OF-SELECTION. *== Start report lcl_xml=>call_report( EXPORTING iv_repid = p_repid iv_list = p_list ).