Dynamic Programming : Bind table

[Former Member]

Hello to all,

I intend to bind a table dynamically for which i am following these steps:

1. Created the context node dynamically in WDINIT.

2. Filled the context node (made a select query and then using bind_table)

3. In WDDOModify, used the following code

CALL METHOD VIEW->GET_ROOT_ELEMENT

RECEIVING

ROOT_VIEW_ELEMENT = LR_ROOT_ELEMENT .

"DOWNCAST IT

LR_CONTAINER ?= LR_ROOT_ELEMENT.

4. Created an UI elemnt and bound the data source

CALL METHOD CL_WD_TABLE=>NEW_TABLE

EXPORTING

BIND_DATA_SOURCE = 'SFLIGHTS_CONTEXT'

ID = 'TABLE_SFLIGHT'

RECEIVING

CONTROL = LR_TABLE

.

5. CALL METHOD LR_CONTAINER->ADD_CHILD

EXPORTING

THE_CHILD = LR_TABLE

6 CALL METHOD CL_WD_FLOW_DATA=>NEW_FLOW_DATA

EXPORTING

ELEMENT = LR_TABLE

RECEIVING

CONTROL = LR_FLOW_DATA

With this all i am getting in the browser is an empty table. Well i have used the <b>bind_data_source</b> parameter = the context, and this context is very much filled in the WDDOINIT method but can't understand this behavior of getting an empty table.

Please help me with this

[Former Member]

Hi Abhishek,

I am putting the Exaple code which will help you to solve the problem. Here the logic in my example are the User enters TABLENAME into the Input field and he want to display the information about that Table with data.

DATA: lr_root_info TYPE REF TO if_wd_context_node_info,

lr_node_info TYPE REF TO if_wd_context_node_info,

lr_context_node TYPE REF TO if_wd_context_node,

lr_context_elem TYPE REF TO if_wd_context_element,

lv_tabname TYPE string,

lr_db_tab TYPE REF TO data.

FIELD-SYMBOLS: <lfs_db_tab> TYPE ANY TABLE.

• read db table name from context

lr_context_node = wd_context->get_child_node( name = 'TABLE_NAME' ).

lr_context_elem = lr_context_node->get_element( ).

lr_context_elem->get_attribute(

EXPORTING name = 'TABLENAME'

IMPORTING value = lv_tabname ).

TRANSLATE lv_tabname TO UPPER CASE.

• get meta data info of root context node

lr_root_info = wd_context->get_node_info( ).

• create context structure

CALL METHOD lr_root_info->add_new_child_node

EXPORTING

STATIC_ELEMENT_TYPE = lv_tabname

name = 'DB_TABLE'

receiving

child_node_info = lr_node_info.

• create data object of correct type and assign field symbol

CREATE DATA lr_db_tab TYPE TABLE OF (lv_tabname).

ASSIGN lr_db_tab->* TO <lfs_db_tab>.

• read DB content

SELECT * FROM (lv_tabname)

INTO CORRESPONDING FIELDS OF TABLE <lfs_db_tab>

UP TO 100 ROWS.

• bind table to context

lr_context_node = wd_context->get_child_node( name = 'DB_TABLE' ).

CALL METHOD lr_context_node->bind_table

EXPORTING

new_items = <lfs_db_tab>.

Best Regards,

Vijay

[Former Member]

Hi Vijaya,

As i mentioned previously the context node has already been created (using add_new_child_node).

The question here is : "How do i create a 'TABLE' UI element dynamically and fill it with a data source ?

I am getting an empty view when i go for

DATA: LR_LABEL TYPE REF TO CL_WD_LABEL,

LR_CARRIER_ID TYPE REF TO CL_WD_INPUT_FIELD,

LR_FLOW_DATA TYPE REF TO CL_WD_FLOW_DATA,

LR_TABLE TYPE REF TO CL_WD_TABLE.

CALL METHOD CL_WD_TABLE=>NEW_TABLE

EXPORTING

BIND_DATA_SOURCE = 'SFLIGHTS_CONTEXT'

ENABLED = ABAP_TRUE

ID = 'TABLE_SFLIGHT'

RECEIVING

CONTROL = LR_TABLE

hope i made myself clear this time.

[Former Member]

Hi Abhishek,

Here in my example GROUP_1 is a transaparent conatainer which is already created in my View. If you don't want this directly you can pass ROOTUIELEMENTCONTAINER instead of GROUP_1.

<b>See the Code Below:</b>

• Check, whether this method has been processed before

IF first_time = abap_true.

• Get reference to group, which shall be modified

DATA: lr_group TYPE REF TO cl_wd_group.

lr_group ?= view->get_element( id = 'GROUP_1' ).

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

• Define table bound to node DB_TABLE

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

DATA: lr_table TYPE REF TO cl_wd_table,

lr_context_node TYPE REF TO if_wd_context_node.

lr_context_node = wd_context->get_child_node( name = 'DB_TABLE' ).

CALL METHOD cl_wd_dynamic_tool=>create_table_from_node

EXPORTING

ui_parent = lr_group

table_id = 'TABLE'

node = lr_context_node

RECEIVING

table = lr_table.

endif.

Warm Regards,

Vijay