Dynamic Programming - Attribute Mapping

Question

Hi
Im working on Web Dynpro for ABAP Application where Im using dynamic programming.
I've created node and attributes dynamically (using ADD_NEW_CHILD_NODE & ADD_ATTRIBUTE methods resp.) & bound the dynamically created Textedit UI elements to those attributes. The application is running fine upto this.
Now I want to get the text entered in textedit field from the context. For this I'm using GET_ATTRIBUTE method. Here Im getting dump with error message 'Could not find attribute V_TEST.1.CN_INPUT.1.ATTR11 '. When I debug the GET_ATTRIBUTE method, I found out that the internal table DYNAMIC_ATTRIBUTES is initial. The internal table ATTRIBUTES->* is getting populated in the metod ADD_ATTRIBUTE.
Pls suggest the solution or any alternative method for this.

Answer 1

Hi ,
this is happening because the attributes are added dynamically . to get the attribute value at runtime u have to follow the below procedure .
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 ,
           LS_COMPONENT TYPE CL_ABAP_STRUCTDESCR=>COMPONENT,
           LT_COMPONENTS TYPE CL_ABAP_STRUCTDESCR=>COMPONENT_TABLE,
           LR_TYPE TYPE  REF TO CL_ABAP_DATADESCR .
LR_TYPE ?= cl_abap_TYPEdescr=>describe_by_name( p_name  = 'MATNR' ).
    LS_COMPONENT-NAME = 'MATNR'.
    LS_COMPONENT-TYPE = LR_TYPE .
   APPEND LS_COMPONENT TO LT_COMPONENTS.
LR_TYPE ?= cl_abap_TYPEdescr=>describe_by_name( p_name  = 'MAKTX' ).
    LS_COMPONENT-NAME = 'MAKTX'.
    LS_COMPONENT-TYPE = LR_TYPE .
   APPEND LS_COMPONENT TO LT_COMPONENTS.
CALL METHOD cl_abap_structdescr=>create
      EXPORTING
        p_components = LT_COMPONENTS
           receiving
       p_result     = LR_STRUCTDESCR
CATCH cx_sy_struct_creation .
    *ENDTRY.
  LR_ROOT_INFO = WD_CONTEXT->GET_NODE_INFO( ).
        CALL METHOD lr_root_info->add_new_child_node
  498    EXPORTING
  499  *    supply_method                =
  500  *    supply_object                =
  501  *    dispose_method               =
  502  *    dispose_object               =
  503  *    static_element_type          =
  504      name                         = 'DATA'                                  " NODE NAME
  505  *    is_mandatory                 = ABAP_FALSE
  506  *    is_mandatory_selection       = ABAP_FALSE
  507  *    is_multiple                  = ABAP_TRUE
  508  *    is_multiple_selection        = ABAP_TRUE
  509  *    is_singleton                 = ABAP_FALSE
  510      is_initialize_lead_selection = ABAP_false
  511      static_element_rtti          = LR_STRUCTDESCR   
  512  *    is_static                    = ABAP_TRUE                       " ADD ATTRIBUTE AS STATIC
  513  *    attributes                   =
  514    receiving
  515      child_node_info              = LR_NODE_INFO .
Regards
Yash