Hi, Oleksii: Regarding question 2, aside from a few edge cases, the MarkLogic libraries have the same core implementation with JavaScript and XQuery interfaces.
The core behavior of functions in the MarkLogic libraries are (in almost every case) consistent across environments. If you are working in JavaScript and the regex implementation from v8 is a good fit for your requirements, you should take advantage of JavaScript regex objects and methods. Hoping that clarifies, Erik Hennum ________________________________ From: general-boun...@developer.marklogic.com [general-boun...@developer.marklogic.com] on behalf of Sewell, David R. (drs2n) [dsew...@virginia.edu] Sent: Wednesday, March 22, 2017 1:40 PM To: MarkLogic Developer Discussion Subject: Re: [MarkLogic Dev General] Regular Expressions I’m not sure what the answer is to question 2, but for question 1, the answer is that MarkLogic’s implementation of XPath doesn’t support the \b character escape because it is not included in the XPath specification for regular expressions, which itself is based on "XML Schema Part 2: Datatypes Second Edition”. The only single-character escapes are these: https://www.w3.org/TR/xmlschema-2/#nt-charClassEsc Some XSLT and XQuery processors support extended regular expressions as a proprietary feature (for example, Saxon has a semi-documented extension that allows full Java regex), but MarkLogic doesn’t (unless there is undocumented support that I don’t know about). David On Mar 22, 2017, at 3:55 PM, Oleksii Segeda <oseg...@worldbankgroup.org<mailto:oseg...@worldbankgroup.org>> wrote: Hi everyone, Quick questions regarding regex in ML: 1. What’s ML alternative to word boundaries \b? Seems that fn:analyze-string doesn’t support this special character. 2. Does JS version of this function (fn.analyzeString) use JS regex engine? If so, why it gives me error for fn.analyzeString("foo bar bar", "\\b<UrlBlockedError.aspx>(bar)\\b") ? Regards, Oleksii Segeda IT Analyst Information and Technology Solutions <image002.png> <image003.png> _______________________________________________ General mailing list General@developer.marklogic.com<mailto:General@developer.marklogic.com> Manage your subscription at: http://developer.marklogic.com/mailman/listinfo/general
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