Function _ConstructIterator

src/execution_plan/ops/op_node_by_label_scan.c:78–107

}

static GrB_Info _ConstructIterator
(
	NodeByLabelScan *op
) {
	GrB_Info  info;
	NodeID    minId;
	NodeID    maxId;
	GrB_Index nrows;

	RG_Matrix L = Graph_GetLabelMatrix(QueryCtx_GetGraph(), op->n->label_id);
	info = RG_Matrix_nrows(&nrows, L);
	ASSERT(info == GrB_SUCCESS);

	// make sure range is within matrix bounds
	UnsignedRange_TightenRange(op->id_range, OP_GE, 0);
	UnsignedRange_TightenRange(op->id_range, OP_LT, nrows);

	if(!UnsignedRange_IsValid(op->id_range)) return GrB_DIMENSION_MISMATCH;

	if(op->id_range->include_min) minId = op->id_range->min;
	else minId = op->id_range->min + 1;

	if(op->id_range->include_max) maxId = op->id_range->max;
	else maxId = op->id_range->max - 1;

	info = RG_MatrixTupleIter_AttachRange(&op->iter, L, minId, maxId);
	ASSERT(info == GrB_SUCCESS);

	return info;
}

static OpResult NodeByLabelScanInit
(