/* MakeColumn
*/
rc_t VCursorMakeColumn ( VCursor *self, VColumn **col, const SColumn *scol )
{
VTable *vtbl;
if ( self -> read_only )
return VColumnMake ( col, self -> schema, scol );
vtbl = self -> tbl;
return WColumnMake ( col, self -> schema, scol, vtbl -> stbl -> limit, vtbl -> mgr );
}
/* AddSColumn
*/
static
rc_t
VViewCursorAddSColumn ( VViewCursor * p_self,
uint32_t * p_idx,
const SColumn * p_scol,
const VTypedecl * p_cast,
Vector * p_cx_bind )
{
rc_t rc = 0;
VColumn *col;
/* must be readable */
if ( p_scol -> read == NULL )
{
return RC ( rcVDB, rcCursor, rcUpdating, rcColumn, rcWriteonly );
}
/* must not already be there - benign error */
col = VCursorCacheGet ( & p_self -> dad . col, & p_scol -> cid );
if ( col != NULL )
{
* p_idx = col -> ord;
rc = RC ( rcVDB, rcCursor, rcUpdating, rcColumn, rcExists );
}
else
{
/* make object */
rc = VColumnMake ( & col, p_self -> view -> schema, p_scol );
if ( rc == 0 )
{
#if 0
/* open column if cursor open or type unknown */
if ( self -> dad . state >= vcReady || scol -> td . type_id == 0 )
{
rc = RC ( rcVDB, rcCursor, rcUpdating, rcColumn, ?? );
}
else
{ /* check cast of SColumn against requested type
this is to handle the case where the column
was created incomplete, i.e. with unknown type */
if ( cast != NULL && | VTypedeclToTypedecl ( & scol -> td,
self -> schema, cast, & col -> td, NULL ) )
{
rc = RC ( rcVDB, rcCursor, rcUpdating, rcColumn, ?? );
}
}
/* MakeColumn
*/
rc_t VCursorMakeColumn ( VCursor *self, VColumn **col, const SColumn *scol )
{
return VColumnMake ( col, self -> schema, scol );
}
/* MakeColumn
*/
rc_t VTableReadCursorMakeColumn ( VTableCursor *self, VColumn **col, const SColumn *scol, Vector *cx_bind )
{
return VColumnMake ( col, self -> schema, scol );
}