Function createHashPartitionedPolicy

src/backend/cdb/cdbcat.c:129–152

* createHashPartitionedPolicy-- Create a policy with data * partitioned by keys */

 * partitioned by keys 
 */
GpPolicy *
createHashPartitionedPolicy(List *keys, List *opclasses, int numsegments)
{
	GpPolicy	*policy;
	ListCell 	*lc;
	ListCell 	*lop;
	int 		idx = 0;
	int 		len = list_length(keys);

	Assert(list_length(keys) == list_length(opclasses));

	if (len == 0)
		return createRandomPartitionedPolicy(numsegments);

	policy = makeGpPolicy(POLICYTYPE_PARTITIONED, len, numsegments);
	forboth(lc, keys, lop, opclasses)
	{
		policy->attrs[idx] = (AttrNumber) lfirst_int(lc);
		policy->opclasses[idx] = (Oid) lfirst_oid(lop);
		idx++;
	}

	return policy;	
}

/*
 * GpPolicyCopy -- Return a copy of a GpPolicy object.