Function ExecStoreBufferHeapTuple

src/backend/executor/execTuples.c:1408–1428

-------------------------------- * ExecStoreBufferHeapTuple * * This function is used to store an on-disk physical tuple from a buffer * into a specified slot in the tuple table. * * tuple: tuple to store * slot: TTSOpsBufferHeapTuple type slot to store it in * buffer: disk buffer if tuple is in a disk page, else InvalidBuffer * * The tuple table code acquires a pin on the buffer w

 * --------------------------------
 */
TupleTableSlot *
ExecStoreBufferHeapTuple(HeapTuple tuple,
						 TupleTableSlot *slot,
						 Buffer buffer)
{
	/*
	 * sanity checks
	 */
	Assert(tuple != NULL);
	Assert(slot != NULL);
	Assert(slot->tts_tupleDescriptor != NULL);
	Assert(BufferIsValid(buffer));

	if (unlikely(!TTS_IS_BUFFERTUPLE(slot)))
		elog(ERROR, "trying to store an on-disk heap tuple into wrong type of slot");
	tts_buffer_heap_store_tuple(slot, tuple, buffer, false);

	slot->tts_tableOid = tuple->t_tableOid;

	return slot;
}

/*
 * Like ExecStoreBufferHeapTuple, but transfer an existing pin from the caller