MemTuple ExecCopySlotMemTupleTo(TupleTableSlot *slot, MemoryContext pctxt, char *dest, unsigned int *len)
{
uint32 dumlen;
MemTuple mtup = NULL;
Assert(!TupIsNull(slot));
Assert(slot->tts_mt_bind);
if(!len)
len = &dumlen;
if (TupHasMemTuple(slot))
{
mtup = memtuple_copy_to(slot->PRIVATE_tts_memtuple, slot->tts_mt_bind, (MemTuple) dest, len);
if(mtup || !pctxt)
return mtup;
mtup = (MemTuple) ctxt_alloc(pctxt, *len);
mtup = memtuple_copy_to(slot->PRIVATE_tts_memtuple, slot->tts_mt_bind, mtup, len);
Assert(mtup);
return mtup;
}
slot_getallattrs(slot);
mtup = memtuple_form_to(slot->tts_mt_bind, slot_get_values(slot), slot_get_isnull(slot), (MemTuple) dest, len, false);
if(mtup || !pctxt)
return mtup;
mtup = (MemTuple) ctxt_alloc(pctxt, *len);
mtup = memtuple_form_to(slot->tts_mt_bind, slot_get_values(slot), slot_get_isnull(slot), mtup, len, false);
Assert(mtup);
return mtup;
}
/* --------------------------------
* ExecCopySlotHeadTupleTo
* Copy heapTuple to a preallocated buffer. Code adapted from ExecCopySlotTuple
*
* return the copied heaptule if there is enough space, or, if the memorycontext is
* not null, which the function will alloc enough space from the context. One can
* test if the tuple is alloced (ret == dest)
*
* return NULL and set *len to space need if there is not enough space and the mem context is null.
* return NULL if heap tuple is not valid, and set *len = 0. See slot->tts_tuple case below.
* -------------------------------
*/
HeapTuple ExecCopySlotHeapTupleTo(TupleTableSlot *slot, MemoryContext pctxt, char* dest, unsigned int *len)
{
uint32 dumlen;
HeapTuple tup = NULL;
Assert(!TupIsNull(slot));
Assert(slot->tts_tupleDescriptor);
if(!len)
len = &dumlen;
if (slot->PRIVATE_tts_heaptuple)
{
tup = heaptuple_copy_to(slot->PRIVATE_tts_heaptuple, (HeapTuple) dest, len);
if(tup || !pctxt)
return tup;
tup = (HeapTuple) ctxt_alloc(pctxt, *len);
tup = heaptuple_copy_to(slot->PRIVATE_tts_heaptuple, tup, len);
Assert(tup);
return tup;
}
slot_getallattrs(slot);
tup = heaptuple_form_to(slot->tts_tupleDescriptor, slot_get_values(slot), slot_get_isnull(slot), (HeapTuple) dest, len);
if(tup || !pctxt)
return tup;
tup = (HeapTuple) ctxt_alloc(pctxt, *len);
tup = heaptuple_form_to(slot->tts_tupleDescriptor, slot_get_values(slot), slot_get_isnull(slot), tup, len);
Assert(tup);
return tup;
}
