ROUTING: return driving directions defaults to true

Hi.
We use Oracle Spatial 10gR2 for routing Europe.
We solely use tables EDGE, NODE, PARTITION and neglect table SIGN_POST. When sending a request with return_driving_directions = "true" or the attribute not even set, I get the following exception:
<RoutingEngineException>
[REE-0108: SQLException caught while trying to call SDO_ROUTER_PARTITION.get_edge_info: [ORA-00904: "FROM_EDGE_ID":
ung�ltiger Bezeichner
ORA-06512: in "MDSYS.SDO_ROUTER_PARTITION", Zeile 1649
ORA-06512: in Zeile 1
</RoutingEngineException>
This obviously has to do with the empty SIGN_POST table. A simple return_driving_directions="false" in the request helps. Maybe ORACLE could change the default to be "false" in a later release???
Cheers
Sebastian

Database is good for handle large amount of data with fairly simple queries.
But SQL is not deigned to handle iterative/recursive analysis like network or graph analysis. These types of analyses usually are computation expensive. NDM java API is designed to conduct network analysis in the middle or client tiers in a generic way for network applications.
The NDM LOD(load-on-demand) Java API is the core API for network analysis. It contains many modeling features and analysis functions to make customization easier.
It provides network constraints to guide analysis w.r.t. business/application logic. It also supports user-defined cost calculators that models analysis preference/penalty. Application attributes can be defined as user data and associated with network elements (nodes/links) in network constraints or cost calculators. Most common network analysis functions are supported in the API so users can focus on their business logic/rules.
There is a PL/SQL API which is a set of java stored procedures based on NDM java in-memory API (to be deprecated). The PL/SQL API is limited (scalability and performance) by the JVM in Oracle database.
jack

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Message Edited by dawg on 08-May-200711:04 PM
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ROUTING: return driving directions defaults to true

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