Oracle NDM node$ and link$ extra attributes

Question

Hello,
is there any way to create the network with extra attribute columns in node and link tables? I like to store other attributes in node table - without keeping them on a different table, and on link table I would like mustiple costs, etc.
Also I noticed there is a userData method in node. is it possible to save this userData to somewhere per node?
Best Regards,

Answer 1

Hi,
There are a few ways to have multiple cost columns. You could actually create a network on a view, and redefine the view to use the cost column you want before doing the analysis. The other way is just to create a new network, using the exising node and link tables but different cost columns. I assume this is the example you are looking for, so here is an example that adds a network called MY_NEW_NETWORK, selecting all the information from MY_OLD_NETWORK, and changing the node and link cost columns to NEW_NODE_COST_COLUMN and NEW_LINK_COST_COLUMN.
Hope this helps.
insert into user_sdo_network_metadata (
select 'MY_NEW_NETWORK',NETWORK_ID, NETWORK_CATEGORY,
GEOMETRY_TYPE, NETWORK_TYPE, NO_OF_HIERARCHY_LEVELS, NO_OF_PARTITIONS, LRS_TABLE_NAME,
LRS_GEOM_COLUMN, NODE_TABLE_NAME, NODE_GEOM_COLUMN, 'NEW_NODE_COST_COLUMN', LINK_TABLE_NAME,
LINK_GEOM_COLUMN, LINK_DIRECTION, 'NEW_LINK_COST_COLUMN', PATH_TABLE_NAME, PATH_GEOM_COLUMN,
PATH_LINK_TABLE_NAME, PARTITION_TABLE_NAME
from user_sdo_network_metadata
where network = 'MY_OLD_NETWORK');