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Dynamic node creation from fieldcatlog or table contents

Former Member

‎2009 Sep 08 1:20 PM

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381

Hi,

In webdynpro for abap, I want to create a node dynamically based on either of the following inputs.

1. Fieldcatalog.

2. Dynamically generated to-be contents of the node from a function module i.e. some internal table.

Can somebody help me in this regard.

Regards,

Soumya

Hi,

In webdynpro for abap, I want to create a node dynamically based on either of the following inputs.

1. Fieldcatalog.

2. Dynamically generated to-be contents of the node from a function module i.e. some internal table.

Can somebody help me in this regard.

Regards,

Soumya

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1 REPLY 1
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Former Member

‎2009 Oct 07 1:25 PM

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345

Above problem is solved with the following solution.


  DATA: ls_component   TYPE cl_abap_structdescr=>component,
        lr_type        TYPE REF TO cl_abap_datadescr,
        lt_components  TYPE cl_abap_structdescr=>component_table,
        ls_fieldcatlog TYPE LINE OF lvc_t_fcat.

  LOOP AT lt_fieldcatlog INTO ls_fieldcatlog.
    lr_type ?= cl_abap_typedescr=>describe_by_name( p_name = lt_fieldcatlog-rollname ).
    ls_component-name = ls_fieldcatlog-fieldname.
    ls_component-type = lr_type .
    APPEND ls_component TO lt_components.
  ENDLOOP.

******* Next, create a new structure and assign it to a new dynamic context node *******
  DATA:   lr_root_info TYPE REF TO if_wd_context_node_info ,
          lr_node_info TYPE REF TO if_wd_context_node_info,
          lr_structdescr TYPE REF TO cl_abap_structdescr.

  CALL METHOD cl_abap_structdescr=>create
    EXPORTING
      p_components = lt_components
    RECEIVING
      p_result     = lr_structdescr.

* Get context node info
  lr_root_info = wd_context->get_node_info( ).
* Generate new node with the dynamic structure
  CALL METHOD lr_root_info->add_new_child_node
    EXPORTING
      name                         = 'DYN_NODE'
      is_initialize_lead_selection = abap_true
      static_element_rtti          = lr_structdescr
      is_static                    = abap_false
    RECEIVING
      child_node_info              = lr_node_info.