Function _IncrementalHashEntity

src/execution_plan/ops/op_merge_create.c:19–50

convert a graph entity's components into an identifying hash code

// convert a graph entity's components into an identifying hash code
static void _IncrementalHashEntity(XXH64_state_t *state, const char **labels,
								   uint label_count, AttributeSet *set) {
	AttributeSet _set = *set;

	// update hash with label if one is provided
	XXH_errorcode res;
	UNUSED(res);

	for(uint i = 0; i < label_count; i++) {
		res = XXH64_update(state, labels[i], strlen(labels[i]));
		ASSERT(res != XXH_ERROR);
	}

	if(_set) {
		// update hash with attribute count
		res = XXH64_update(state, &_set->attr_count, sizeof(_set->attr_count));
		ASSERT(res != XXH_ERROR);

		for (uint16_t i = 0; i < _set->attr_count; ++i) {
			Attribute *a = _set->attributes + i;

			// update hash with attribute ID
			res = XXH64_update(state, &a->id, sizeof(a->id));
			ASSERT(res != XXH_ERROR);

			// update hash with the hashval of the associated SIValue
			XXH64_hash_t value_hash = SIValue_HashCode(a->value);
			res = XXH64_update(state, &value_hash, sizeof(value_hash));
			ASSERT(res != XXH_ERROR);
		}
	}
}

// revert the most recent set of buffered creations and free any allocations.
static void _RollbackPendingCreations