Oracle Driver

Oracle Driver

This SQLDriver implementation allows Gephi to use Oracle data.

No Oracle code is packaged in this module: it locates the Oracle JDBC drivers using 2 environment variables:-

1. $JDBC_PATH - a path of directories containing JDBC JAR files: any JAR files matching the file pattern “ojdbc*.jar” is considered a valid Oracle JDBC JAR;
2. $ORACLE_HOME - the usual Oracle environment variable specifying the location of the Oracle client or Instant Client.

This plugin has been tested under Windows (Windows 7) and OSX (El Capitan)

MacOS Problems

Exporting environment variables which are visible to GUI applications under OSX seems to be a non-trivial task; this approach was attempted and failed: running the application from the command line works

Failed

stumacbook:Downloads sturton$ defaults write   ~/.MacOSX/environment.plist  ORACLE_HOME -string "$ORACLE_HOME" 
stumacbook:Downloads sturton$ defaults write   ~/.MacOSX/environment.plist  JDBC_PATH -string "$ORACLE_HOME" 
stumacbook:Downloads sturton$ defaults read   ~/.MacOSX/environment.plist  
{
    "JDBC_PATH" = "/Users/sturton/Developer/instantclient_11_2";
    "ORACLE_HOME" = "/Users/sturton/Developer/instantclient_11_2";
}
stumacbook:Downloads sturton$ export TWO_TASK=192.168.0.23:1521/orcl
stumacbook:Downloads sturton$ sqlplus system/oracle

SQL*Plus: Release 11.2.0.4.0 Production on Thu Mar 3 19:16:50 2016

Copyright (c) 1982, 2013, Oracle.  All rights reserved.


Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> 

Succeeded

stumacbook:OracleDriver sturton$  /Applications/Gephi.app/Contents/MacOS/gephi 

Importing From Oracle

The queries below may be used to import the dependencies between database objects in the Oracle Developer Day VM example schemas

Node Query

SELECT       
DISTINCT     
dbms_utility.get_hash_value(owner||'~'||object_type||'~'||object_name, 1000000, 4194304  ) id   
,CASE WHEN object_type LIKE  'JAVA%' 
  THEN dbms_java.longname (object_name) 
  ELSE object_name 
  END label     
,owner  
, object_type       
,COUNT(*) OVER (PARTITION BY dbms_utility.get_hash_value(owner||'~'||object_type||'~'||object_name, 1000000, 4194304  )) duplication    
,CASE   
  WHEN  REGEXP_INSTR(object_type, 'PACKAGE.*|TYPE.*|TABLE|VIEW|TRIGGER|PROCEDURE|FUNCTION') > 0     
    THEN 'Y'    
  ELSE 'N'      
  END IS_BASE   
,CASE   
  WHEN REGEXP_INSTR(object_type, 'PROCEDURE|FUNCTION|TRIGGER|TYPE.*|PACKAGE.*') > 0 
  THEN 'PLSQL'  
  ELSE 'DDL'    
  END NAMESPACE   
,CASE   
  WHEN OBJECT_TYPE IN ('TABLE','VIEW','MATERIALIZED VIEW' )     
    THEN 'http://localhost:9090/DeveloperDay/schemaspy/'||OWNER||'/tables/'||OBJECT_NAME||'.html'   
  WHEN  REGEXP_INSTR(OBJECT_TYPE, 'PROCEDURE|FUNCTION|TRIGGER') > 0   
    THEN 'http://localhost:9090/DeveloperDay/pldoc/' || '_' || OWNER ||'.html#' || LOWER(OBJECT_NAME)   
  WHEN  REGEXP_INSTR(OBJECT_TYPE, 'PACKAGE.*|TYPE.*') > 0       
    THEN 'http://localhost:9090/DeveloperDay/pldoc/' || OBJECT_NAME ||'.html'   
  WHEN  REGEXP_INSTR(OBJECT_TYPE, 'PACKAGE BODY|TYPE BODY') > 0   
    THEN 'http://localhost:9090/DeveloperDay/pldoc/_' || OBJECT_NAME ||'.html'  
  ELSE ' '      END DOCUMENTATION_URL   
FROM DBA_OBJECTS_AE     
WHERE REGEXP_LIKE(owner , '^PLS$|^HR$|^OE$|^DEMO$')     
AND INSTR(object_name, '$') = 0  
ORDER BY id

Edge Query

SELECT 
dbms_utility.get_hash_value(owner||'~'||type||'~'||name, 1000000, 4194304  ) source
,dbms_utility.get_hash_value(referenced_owner||'~'||referenced_type||'~'||referenced_name, 1000000, 4194304  ) target
,dependency_type 
from DBA_DEPENDENCIES 
WHERE REGEXP_LIKE(owner , '^PLS$|^HR$|^OE$|^DEMO$' ) 
AND REGEXP_LIKE(referenced_owner , '^PLS$|^HR$|^OE$|^DEMO$' )