Import Network Model from Shapefile

Question

Hello,
How to import shapefile of roads network (network data model) into oracle spatial? (Oracle+Spatial 10.2g)
http://www.oracle.com/technology/software/products/spatial/files/shape2sdojava.zip deals only with normal (non-network) spatial data..
Huge thanks!

Answer 1

Ok, putting together your help, I managed to get myself a network model, hurray! But after this script in the end (could you peep through it and tell if anything's missing), VALIDATE_NETWORK gives me this:
SDO_NET.VALIDATE_NETWORK('SHP_TABLE_NET')
No Link Geom Metadata!
How (where) would I insert that Link Geom Metadata? All I found is USER_SDO_GEOM_METADATA, but there is nowhere to insert Link data. Googled, too.
The script, together with instructions, in case you make a nice use of it ;):
* Import a Shapefile into Oracle Spatial as a normal vector map;
* (ISSIT POSSIBLE TO AVOID THIS STEP? PL/SQL .sql file script? But that with DDL restrictions, clumsy variable definitions in DERLARE section etc. drove me nuts and I gave up, just asking users to do simple Find/Replace..):
Replace all occurrences of SHP_TABLE (case sensitive, can be part of a word) in the script below with the table name of the imported map from Shapefile (copy all script from below to a text editor and perform that replace);
* Copy/Paste (in Linux: select text and then use middle mouse button or Shift+Insert to paste it in a console) the script line-by-line, follow any severe errors (ignore ones, when it writes that table cannot be dropped when it does not actually exist :) and the like).
-- delete any tables existing
EXECUTE SDO_NET.DROP_NETWORK('SHP_TABLE_NET');
DROP TABLE SHP_TABLE_PLINK$;
DROP TABLE SHP_TABLE_EDGE$;
DROP TABLE SHP_TABLE_NODE$;
DROP TABLE SHP_TABLE_LINK$;
DROP TABLE SHP_TABLE_FACE$;
-- delete any existing geometry layer
EXECUTE SDO_TOPO.DELETE_TOPO_GEOMETRY_LAYER('SHP_TABLE', 'SHP_TABLE_TOPO', 'FEATURE');
DROP TABLE SHP_TABLE_TOPO;
-- then drop existing topology
EXECUTE SDO_TOPO.DROP_TOPOLOGY('SHP_TABLE');
-- create new topology
EXECUTE SDO_TOPO.CREATE_TOPOLOGY('SHP_TABLE', 0.5);
-- insert the universal face for an empty topology
INSERT INTO SHP_TABLE_FACE$(face_id, boundary_edge_id, island_edge_id_list, island_node_id_list, mbr_geometry)
VALUES(-1, NULL, SDO_LIST_TYPE(), SDO_LIST_TYPE(), NULL);
-- create an Oracle table with a feature layer
DROP TABLE SHP_TABLE_TOPO;
-- note, do not create unique id (PRIMARY KEY) as the data in teleatlas.dbf is inconsistent
CREATE TABLE SHP_TABLE_TOPO(id NUMBER, feature SDO_TOPO_GEOMETRY);
--CREATE TABLE SHP_TABLE_TOPO(id number, type varchar2(1), feature SDO_TOPO_GEOMETRY);
-- register feature layer with topology
EXECUTE SDO_TOPO.ADD_TOPO_GEOMETRY_LAYER('SHP_TABLE', 'SHP_TABLE_TOPO', 'FEATURE', 'CURVE');
-- create updatable TOPO_MAP object and load the whole topology in cache
-- since we just created the topology, the cache will be empty
EXECUTE SDO_TOPO_MAP.DROP_TOPO_MAP('SHP_TABLE_MAP_CACHE');
EXECUTE SDO_TOPO_MAP.CREATE_TOPO_MAP('SHP_TABLE', 'SHP_TABLE_MAP_CACHE');
EXECUTE SDO_TOPO_MAP.LOAD_TOPO_MAP('SHP_TABLE_MAP_CACHE', 'true');
-- copy/paste everything in one go between BEGIN and COMMIT; (including):
-- this one will demand a considerable amount of time
BEGIN
FOR r IN (SELECT id, geometry FROM SHP_TABLE) LOOP
-- associate topological primitives with features
INSERT INTO SHP_TABLE_TOPO(id, feature)
VALUES(r.id,
SDO_TOPO_MAP.CREATE_FEATURE('SHP_TABLE',
'SHP_TABLE_TOPO',
'FEATURE',
r.geometry)
END LOOP;
END;
COMMIT;
-- commit topology changes
EXECUTE SDO_TOPO_MAP.COMMIT_TOPO_MAP;
EXECUTE SDO_TOPO_MAP.DROP_TOPO_MAP('SHP_TABLE_MAP_CACHE');
-- check how many primitives were converted (should be the same number as primitives in the DB)
SELECT COUNT(*) FROM SHP_TABLE_TOPO;
-- after an initial bulk load into an empty topology, initialize_metadata
EXECUTE SDO_TOPO.INITIALIZE_METADATA('SHP_TABLE');
-- check here what tables have been created:
SELECT table_name FROM user_tables WHERE table_name LIKE 'SHP_TABLE_%$';
CREATE TABLE SHP_TABLE_LINK$
AS SELECT edge_id AS link_id,
start_node_id,
end_node_id,
geometry
FROM SHP_TABLE_EDGE$;
-- FULL NETWORK:
--CREATE TABLE SHP_TABLE_PATH$(PATH_ID NUMBER,
-- PATH_NAME VARCHAR2(200),
-- PATH_TYPE VARCHAR2(200),
-- START_NODE_ID NUMBER NOT NULL,
-- END_NODE_ID NUMBER NOT NULL,
-- COST NUMBER,
-- SIMPLE VARCHAR2(1),
-- PATH_GEOMETRY MDSYS.SDO_GEOMETRY);
--CREATE TABLE roads_incompl_plink$(path_id number not null, link_id number not null, seq_no number not null);
--INSERT INTO USER_SDO_NETWORK_METADATA(
-- network, network_category, geometry_type,
-- node_table_name, node_geom_column,
-- link_table_name, link_geom_column, link_direction,
-- path_table_name, path_geom_column,
-- path_link_table_name)
-- VALUES(
-- 'SHP_TABLE_NET', 'SPATIAL', 'SDO_GEOMETRY',
-- 'SHP_TABLE_NODE$', 'GEOMETRY',
-- 'SHP_TABLE_LINK$', 'GEOMETRY', 'UNDIRECTED',
-- 'SHP_TABLE_PATH$', 'PATH_GEOMETRY',
-- 'SHP_TABLE_PLINK$');
-- MINIMAL NETWORK:
INSERT INTO USER_SDO_NETWORK_METADATA(
network, network_category, geometry_type,
node_table_name, node_geom_column,
link_table_name, link_geom_column, link_direction)
VALUES(
'SHP_TABLE_NET', 'SPATIAL', 'SDO_GEOMETRY',
'SHP_TABLE_NODE$', 'GEOMETRY',
'SHP_TABLE_LINK$', 'GEOMETRY', 'UNDIRECTED');
SELECT SDO_NET.VALIDATE_NETWORK('SHP_TABLE_NET') FROM DUAL;
COMMIT;