[jira] Assigned: (XERCESJ-1061) Regex "$" and "^" characters treated as special chars in conflict with XML Schema spec

     [ http://issues.apache.org/jira/browse/XERCESJ-1061?page=all ]

Michael Glavassevich reassigned XERCESJ-1061:
---------------------------------------------

    Assignee: Michael Glavassevich

> Regex "$" and "^" characters treated as special chars in conflict with XML 
> Schema spec
> --------------------------------------------------------------------------------------
>
>                 Key: XERCESJ-1061
>                 URL: http://issues.apache.org/jira/browse/XERCESJ-1061
>             Project: Xerces2-J
>          Issue Type: Bug
>          Components: XML Schema datatypes
>    Affects Versions: 2.6.2
>         Environment: Test Environment: Win XP SP1, JDK v1.5.0_02, Xerces 
> v2.6.2 (manually used; overrides any other, if packaged with the JDK)
>            Reporter: Darien Kindlund
>         Assigned To: Michael Glavassevich
>            Priority: Minor
>         Attachments: RegexParser.diff, regexparser.java
>
>
> Xerces rejects the following schema:
> <xs:schema xmlns:xs='http://www.w3.org/2001/XMLSchema'>
>  <xs:element name="test">
>   <xs:simpleType>
>    <xs:restriction base="xs:string">
>     <xs:pattern value="$?[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@xxxxxxxxx

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