Updated: (XERCESJ-1061) Regex "$ " and "^ " characters treated as special c 2006-09-26 - By Chris Carman (JIRA)
[ http://issues.apache.org/jira/browse/XERCESJ-1061?page=all ]
Chris Carman updated XERCESJ-1061:
----------------------------------
Attachment: regexparser.java
This is a patch to org.apache.xerces.impl.xpath.regex.RegexParser.java that
should fix this issue. Just cease treating dollar and caret as special when
operating in XML Schema mode.
> Regex "$" and "^" characters treated as special chars in conflict with XML
Schema spec
> -----------------------------------------------------------------------------
---------
>
> Key: XERCESJ-1061
> URL: http://issues.apache.org/jira/browse/XERCESJ-1061
> Project: Xerces2-J
> Issue Type: Bug
> Components: XML Schema datatypes
> Affects Versions: 2.6.2
> Environment: Test Environment: Win XP SP1, JDK v1.5.0_02, Xerces v2.6
.2 (manually used; overrides any other, if packaged with the JDK)
> Reporter: Darien Kindlund
> Priority: Minor
> Attachments: regexparser.java
>
>
> Xerces rejects the following schema:
> <xs:schema xmlns:xs='http://www.w3.org/2001/XMLSchema'>
> <xs:element name="test">
> <xs:simpleType>
> <xs:restriction base="xs:string">
> <xs:pattern value="$?[0-9]+\.[0-9]{2}" />
> </xs:restriction>
> </xs:simpleType>
> </xs:element>
> </xs:schema>
> The code within org.apache.xerces.impl.xpath.regex.RegexParser throws a
parser exception over the use of the "$?" characters, unless the "$" character
is escaped. For example, this works:
> <xs:pattern value="\$?[0-9]+\.[0-9]{2}" />
> The fundamental problem is that the Xerces RegexParser code does NOT follow
the XML Schema specification, as defined by this URL:
> http://www.w3.org/TR/2000/WD-xmlschema-2-20000407/#dt-metac
> Specifically, the XML Schema specification does NOT give special meaning to
the "$" and "^" characters, whereas the RegexParser code seems to indicate that
these characters have the normal, standard UNIX definitions of "end-of-line"
and "start-of-line" anchors respectively.
> Regards,
> --
> Darien Kindlund
> The MITRE Corporation
> InfoSec Engr / Scientist, Sr.
> kindlund@(protected)
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