Problem with tableview iterator

Question

Dear friends.
I try to adopt tableview iterator in my customer's BSP pages. So, I programmed test page.
METHOD if_htmlb_tableview_iterator~render_row_start .
  m_row_ref ?= p_row_data_ref.
ENDMETHOD.
M_ROW_REF is "Static Attribute" and "Public" and "Type Ref To Z3TYDISP"
z3tydisp has structure as below
REQNO          NUMC     12
VGUBUN          CHAR     1
DSCOFVGUBUN     STRING     0
REQDT          DATS     8
RNAME          CHAR     10
VCOMP          CHAR     30
VNAME          CHAR     10
VPLACE          CHAR     5
VPLACEDSC     CHAR     20
APPROVAL     CHAR     1
DSCOFAPPROVAL     STRING     0
AND... p_row_data_ref has structure below
REQNO     N     12
VGUBUN     C     1
DSCOFVGUBUN     g     0
REQDT     D     8
RNAME     C     10
VCOMP     C     30
VNAME     C     10
VPLACE     C     5
VPLACEDSC     C     20
APPROVAL     C     1
DSCOFAPPROVAL     g     0
In my option, p_row_data_ref has same structure compared with z3tydisp. But there is "CX_SY_MOVE_CAST_ERROR". How I have to define "z3tydisp"????

Answer 1

>><b>M_ROW_REF is "Static Attribute" and "Public" and "Type Ref To Z3TYDISP"</b>
instead of this make your M_ROW_REF a instantaneous attribute. since static attribute are intantiated only once when object created and are shared by all other intances. m_row_ref contains data about the table you are going to render using tableview. so it should be public, so that get different data for different iterator objects.
your p_row_data_ref must be of type ref to data which is superior class of data types.
and if you have defined iterator "IF_HTMLB_TABLEVIEW_ITERATOR" in your interfaces. then you need not to define structure for p_row_data_ref, its already there in interface.
hope this will solve your problem,
regards,
hemendra