Regular expressions in Schema 'pattern' facet

[Gregory Khanlarov <gr...@coretek.com>]

Hi,

I have a question related to regular expressions parser in Xerces.
I am using Sun's JAXB compiler from the Java Web Services Developer's Pack
version 1.3. As far as I understand, JAXB uses Xerces when it processes an
XML Schema. I have simple type defined with a pattern facet:

<xs:simpleType name="IpAddressType">
   <xs:restriction base="xs:string">
       <xs:pattern
value="\b(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[
0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[0
1]?[0-9][0-9]?)\b" />
   </xs:restriction>
</xs:simpleType>

The ANT build process fails with the following error message:
[xjc] [ERROR] InvalidRegex: Pattern value '\b(25[0-5]|2[0-4][0-9]|[01]?[0-
9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]
?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b' is not a valid
regular expression. The reported error was: 'This expression is not
supported in the current option setting.'

I guess the string "This expression is not supported in the current option
setting." comes from Xerces code. I know that there is a way to
programmatically configure RegularExpression class to customize the
processing of regular expressions.

My questions are:

How to make JAXB work with this regular expression?
How to configure Xerces to make it parse this regular expression?


Please CC to greg@coretek.com your reply
Thank you very much,
Gregory


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