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GET_ATTRIBUTE method of interface IF_WD_CONTEXT_NODE to retrieve value of context element
The GET_ATTRIBUTE method retrieves the value of an individual field/attribute of of context element.
Single context attribute not within a node
This is the simplest form of attribute to set as you can reference it directly using the WD_CONTEXT attribute.
wd_Context->get_attribute(
EXPORTING
name = 'MY_ATTRIBUTE'
IMPORTING
value = ld_attvalue "Attribute Val
).
Single line structure context node
The abap code below retrieves a value from the CARRID attribute which is within the context node CARRIERS.
*Declare variables used to reference context node and attributes
Data: it_scarr type standard table of if_MAIN=>element_CARRIERS, "MAIN(view), CARRIERS(context)
wa_scarr like line of it_scarr,
context_node type ref to if_wd_context_node,
lr_element TYPE REF TO if_wd_context_element.
* bind this data to the context of the flat structure
context_node = wd_context->get_child_node( name = 'CARRIERS').
* CARRIERS' is the name of the context node
* Once you have a link to the context node/structure you can then reference the individual attributes
lr_element = context_node->get_element( ).
lr_element->get_attribute(
EXPORTING
name = 'CARRID' " Web Dynpro: Name of Context Element
IMPORTING
value = ld_attvalue "Attribute Value
).
Table context node (multiple lines)
The abap code below retrieves the CARRID field value from within context node/table CARRIERS. Whether a context node
acts like a structure or a table can be assigned using the Cardinality setting. The code below
simply copys all row into an internal table.
* Set single value within context structure
Data: it_scarr type standard table of if_MAIN=>element_CARRIERS, "view name = MAIN, context = CARRIERS
wa_scarr like line of it_scarr,
context_node type ref to if_wd_context_node,
lr_element TYPE REF TO if_wd_context_element.
context_node = wd_context->get_child_node( name = 'CARRIERS').
* CARRIERS' is the name of the context node
* bind this data to the context of the table
context_node->bind_table( it_scarr ).
if sy-subrc eq 0.
loop at it_scarr into wa_scarr.
free lr_element.
free context_node.
context_node = wd_context->get_child_node( name = 'CARRIERS').
lr_element = context_node->get_element( sy-tabix ). "sy-tabix represents table row to reference
lr_element->get_attribute(
EXPORTING
name = 'CARRID'
IMPORTING
value = ld_attvalue "Attribute Value
).
endloop.
endif.
***IN reality you would just use the following code to capture all rows of the table
***into an itab and then loop around the internal table(it_scarr)
context_node->get_static_attributes_table(
importing
table = it_scarr ).
Also see here for how to use set_attribute to set individual value of a context attribute.
See all Methods of IF_WD_CONTEXT_NODE interface