15.130 SEM_APIS.REACHABLE

Format

SEM_APIS.REACHABLE(
     vcTopoIndexTab  VARCHAR2,
     src             VARCHAR2,
     dest            VARCHAR2);

Description

Finds reachability between src and dest nodes using the topological index vcTopoIndexTab.

Parameters

vcTopoIndexTab

Name of the topological index .

src

Source node ID. This is the value from VALUE_ID column of the RDF_VALUE$ table.

dest

Destination node ID. This is the value from VALUE_ID column of the RDF_VALUE$ table.

Usage Notes

None.

Examples

The following example shows reachability of two nodes.

SQL> select sem_apis.reachable(‘RDFUSER.NET1#RDF_TPX$4',803397617332062387,6459187441411756164) from sys.dual;
SEM_APIS.RE
-----------
FALSE

SQL> select sem_apis.reachable('RDFUSER.NET1#RDF_TPX$4',6459187441411756164,8918988702404702847) from sys.dual;
SEM_APIS.RE
-----------
TRUE