[BUG] matches is not being handled by the range module

[marmoure]

While working on issue #3620, I noticed that matches is not being handled by the Range Index module.

For example, these queries are being handled by the Range Index module:

collection("/db/test")//foo[@bar eq "baz"]
collection("/db/test")//foo[contains(@bar, "b")]
collection("/db/test")//foo[starts-with(@bar, "b")]

The exception is the following query:

collection("/db/test")//foo[matches(@bar, "^b")]

Which is not handled by the Range Index, and whilst debugging this, I was unable to trigger any breakpoints within the Range Index module. The code for matches is here: https://github.com/eXist-db/exist/blob/develop/exist-core/src/main/java/org/exist/xquery/functions/fn/FunMatches.java

See below for the full test:

xquery version "3.1";

let $data := 
    <root>
        <foo bar="baz"/>
    </root>

let $old-range-xconf := 
    <collection xmlns="http://exist-db.org/collection-config/1.0">
        <index xmlns:xs="http://www.w3.org/2001/XMLSchema">
            <create qname="@bar" type="xs:string"/>
        </index>
    </collection>

let $new-range-xconf := 
    <collection xmlns="http://exist-db.org/collection-config/1.0">
        <index xmlns:xs="http://www.w3.org/2001/XMLSchema">
            <range>
                <create qname="@bar" type="xs:string"/>
            </range>
        </index>
    </collection>
    
let $test-col := xmldb:create-collection("/db", "test")
let $xconf-col :=   xmldb:create-collection("/db/system/config/db", "test")
let $conf := for $col in ("old-range-index", "new-range-index", "no-range-index")
    return
        (
            xmldb:create-collection("/db/test", $col),
            xmldb:create-collection("/db/system/config/db/test", $col),
            xmldb:store("/db/test/" || $col, "test.xml", $data)
        )
let $store-xconf-old :=    xmldb:store("/db/system/config/db/test/old-range-index", "collection.xconf", $old-range-xconf)
let $store-xconf-new :=    xmldb:store("/db/system/config/db/test/new-range-index", "collection.xconf", $new-range-xconf)
let $reinedx :=    xmldb:reindex("/db/test")

(:let $hits := collection("/db/test")//foo[@bar eq "baz"]:)
let $hits := collection("/db/test")//foo[matches(@bar, "^b")]
(:let $hits := collection("/db/test")//foo[contains(@bar, "b")]:)
(:let $hits := collection("/db/test")//foo[starts-with(@bar, "b")]:)

for $hit in $hits
return util:collection-name($hit)

[line-o]

@marmoure this was completed without a PR being merged? Could you explain what the outcome was?

[adamretter]

It was closed by mistake.