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[protege-owl] SWRL: Remove Whitespace

Martin O'Connor martin.oconnor at
Fri Jan 8 08:10:52 PST 2010

The SWRL parser did not correctly handle empty strings. I have fixed this bug.

The fix will be in the next release - or you can check out the latest code from the Subversion repository and build it:


----- Original Message -----
From: "mopatr" <moserpatrick at>
To: protege-owl at
Sent: Friday, January 8, 2010 2:29:46 PM GMT +00:00 GMT Britain, Ireland, Portugal
Subject: [protege-owl]  SWRL: Remove Whitespace


Is there a workaround to remove whitespaces from a literal? I tried to use
swrlb:replace(?mt:l, ?mt:z, " ", ""), but it is expected to close the
string. Replacing the whitespace with nothing, meaning just leave away the
fourth argument doesn't work neither, because all four arguments requiered.

Does anyone has an idea?

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