Regex not working in APEX, working on RegexPlanet - regex

Question

I am trying to create a validation for a field where the user should enter an Oracle JDBC Thin connection URL, like:
jdbc:oracle:thin:#//192.168.2.1:1521/XE
jdbc:oracle:thin:192.168.2.1:1521:X01A
jdbc:oracle:thin:#//192.168.2.1:1521/COM.EXAMPLE
I tried testing the regex with RegexPlanet and it says it's working (the regex I am using):
^jdbc:oracle:thin:[#//]*[.\w]+:\d+[:]*[/]*[a-zA-Z0-9.]*$
But when I try to validate the form using this regex it shows the error message, even when I am using the exact same URL's as the one's above. Other validations are working just fine.

Answer 1

A JDBC Thin Driver Connection string can take one of these formats:
jdbc:oracle:thin:#[HOST][:PORT]:SID
jdbc:oracle:thin:#//[HOST][:PORT]/SERVICE
jdbc:oracle:thin:[USER/PASSWORD]#[HOST][:PORT]:SID
jdbc:oracle:thin:[USER/PASSWORD]#//[HOST][:PORT]/SERVICE
Where HOST can be an IP Address or a name.
If you ignore the username/password then a regular expression to match is something like:
^jdbc:oracle:thin:#(//)?(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}|\w+):\d+[:/][a-zA-Z0-9.]+$
(although it's not perfect - but a perfect regular expression to match this would be huge)
Query:
WITH connections ( conn ) AS (
SELECT 'jdbc:oracle:thin:#//192.168.2.1:1521/XE' FROM DUAL UNION ALL
SELECT 'jdbc:oracle:thin:#192.168.2.1:1521:X01A' FROM DUAL UNION ALL
SELECT 'jdbc:oracle:thin:#//192.168.2.1:1521/COM.EXAMPLE' FROM DUAL
)
SELECT *
FROM connections
WHERE REGEXP_LIKE( conn, '^jdbc:oracle:thin:#(//)?(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}|\w+):\d+[:/][a-zA-Z0-9.]+$' );
Results:
CONN
------------------------------------------------
jdbc:oracle:thin:#//192.168.2.1:1521/XE
jdbc:oracle:thin:#192.168.2.1:1521:X01A
jdbc:oracle:thin:#//192.168.2.1:1521/COM.EXAMPLE