如何解决排序时发现的不可比类型：无法将xs：date与xs：integer-XSLT比较>> [

Question

如何解决排序时发现的不可比类型：无法将xs：date与xs：integer进行比较该行显示错误O’Connor v Uber Technols., Inc. (ND Cal, Dec. 05, 2013, No. C–13–3826 EMC) 2013 US Dist Lexis 171813, rev’d on other grounds (9th Cir 2018) 904 F3d 1087:此行出现两次括号（ND Cal，2013年12月5日，编号C–13 –3826 EMC）和（2018年9月Cir）。我们可以先加上括号吗？并且最后两个条目不能根据最新日期移动后代，因为正则表达式用于日期格式\((.*?)((' || string-join($months, '|') || ')\. ([0-9]{1,2}), ([0-9]{4})).*?\)

输入XML

  <root>
    <p content-type="emCase"><named-content content-type="emEntry">AFL-CIO v Unemployment Ins. Appeals Bd. (1994) 23 CA4th 51:</named-content></p>
    <p content-type="emCase"><named-content content-type="emEntry">AFL-CIO v Unemployment Ins. Appeals Bd. (1996) 13 C4th 1017:</named-content></p>
    <p content-type="emCase"><named-content content-type="emEntry">Ambat v City &#x0026; County of San Francisco (ND Cal 2010) 693 F Supp 2d 1130, rev&#x2019;d on other grounds (9th Cir 2014) 757 F3d 1017:</named-content></p>
    <p content-type="emCase"><named-content content-type="emEntry">Ambat v City &#x0026; County of San Francisco (9th Cir 2014) 757 F3d 1017:</named-content></p>
    <p content-type="emCase"><named-content content-type="emEntry">Anaheim Union High Sch. Dist. (2016) PERB Dec. No. 2504E, 41 PERC 80:</named-content></p>
    <p content-type="emCase"><named-content content-type="emEntry">Anaheim Union High Sch. Dist. (1981) PERB Dec. No. 0177E, 5 PERC 12148:</named-content></p>
    <p content-type="emCase"><named-content content-type="emEntry">Artec Group v Klimov (ND Cal, Nov. 22, 2015) 2015 US Dist Lexis 171698:</named-content></p>
    <p content-type="emCase"><named-content content-type="emEntry">Artec Group v Klimov (ND Cal, Dec. 22, 2015) 2016 US Dist Lexis 170194:</named-content></p>
    <p content-type="emCase"><named-content content-type="emEntry">O&#x2019;Connor v Uber Technols., Inc. (ND Cal, Dec. 05, 2013, No. C&#x2013;13&#x2013;3826 EMC) 2013 US Dist Lexis 171813, rev&#x2019;d on other grounds 904 F3d 1087:</named-content></p>
    <p content-type="emCase"><named-content content-type="emEntry">O&#x2019;Connor v Uber Technols., Inc. (2018) 904 F3d 1087:</named-content></p>
    <p content-type="emCase"><named-content content-type="emEntry">O&#x2019;Connor v Uber Technols., Inc. (ND Cal 2015) 82 F Supp 3d 1133:</named-content></p>
    <p content-type="emCase"><named-content content-type="emEntry">Swarmfly, Inc. v Cloudflare, Inc. (ND Cal, May 31, 2018, No. C 17-06957 WHA) 2018 US Dist Lexis 91333:</named-content></p>
    <p content-type="emCase"><named-content content-type="emEntry">Swarmify, Inc. v Cloudflare, Inc. (ND Cal, Sept. 28, 2018, No. C 17-06957 WHA) 2018 US Dist Lexis 168317:</named-content></p>
    <p content-type="emCase"><named-content content-type="emEntry">Swarmify, Inc. v Cloudflare, Inc. (ND Cal, Mar. 3, 2018, No. C 17-06597 WHA) 2018 WL 112204:</named-content></p>
    <p content-type="emCase"><named-content content-type="emEntry">Zody v Microsoft Corp. (ND Cal, June 7, 2013, No. C&#x2013;12&#x2013;00942&#x2013;YGR) 2013 US Dist Lexis 80623:</named-content></p>
    <p content-type="emCase"><named-content content-type="emEntry">Zody v Microsoft Corp. (ND Cal, July 24, 2013, No. C&#x2013;12&#x2013;00942&#x2013;YGR) 2013 US Dist Lexis 103868:</named-content></p>
</root>

XSLT

    <xsl:param name="months" as="xs:string*"
    select="'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sept', 'Oct', 'Nov', 'Dec'"/>

<xsl:param name="date-pattern" as="xs:string"
    select="'\((.*?)((' || string-join($months, '|') || ')\. ([0-9]{1,2}), ([0-9]{4})).*?\)'"/>

<xsl:output indent="yes"/>
<xsl:template match="@specific-use|named-content[@content-type='emSecs']"/>    

<xsl:function name="mf:extract-date" as="xs:date?">
    <xsl:param name="input" as="xs:string"/>
    <xsl:sequence
        select="let $match := analyze-string($input, $date-pattern)/*:match[1]
        return 
        if ($match) 
        then xs:date(
        $match//*:group[@nr = 5] 
        || '-' || format-integer(index-of($months, $match//*:group[@nr = 3]), '00') 
        || '-' || format-integer($match//*:group[@nr = 4], '00'))
        else ()"/>
</xsl:function>

<xsl:function name="mf:extract-year" as="xs:integer?">
    <xsl:param name="input" as="xs:string"/>
    <xsl:sequence
        select="analyze-string($input, '\((.*?)([0-9]{4})\)')/*:match[1]/*:group[@nr = 2]"/>
</xsl:function>

<xsl:function name="mf:extract-sort" as="xs:string?">
    <xsl:param name="input" as="xs:string"/>
    <xsl:sequence
        select="analyze-string($input, '\((.*?)\)')/*:match[1]/*:group[@nr = 1]"/>
</xsl:function>

<xsl:template match="@*|node()">
    <xsl:copy>
        <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
</xsl:template>

<xsl:template match="root">
    <xsl:copy>
        <xsl:for-each-group select="p" group-adjacent="substring-before(named-content[@content-type = 'emEntry'], '(')">
            <xsl:apply-templates select="current-group()">
                <xsl:sort select="let $year := mf:extract-year(.)
                    return if ($year) then -$year else 1"/>
                <xsl:sort select="let $date := mf:extract-date(.)
                    return if (exists($date)) then $date else 1" order="descending"/>
                <xsl:sort select="let $sort := mf:extract-sort(.)
                    return if ($sort) then $sort else 1" order="descending"/>
            </xsl:apply-templates>
        </xsl:for-each-group>
    </xsl:copy>
</xsl:template>

预期输出

<root>
   <p content-type="emCase">
      <named-content content-type="emEntry">AFL-CIO v Unemployment Ins. Appeals Bd. (1996) 13 C4th 1017:</named-content>
   </p>
   <p content-type="emCase">
      <named-content content-type="emEntry">AFL-CIO v Unemployment Ins. Appeals Bd. (1994) 23 CA4th 51:</named-content>
   </p>
   <p content-type="emCase">
      <named-content content-type="emEntry">Ambat v City &amp; County of San Francisco (9th Cir 2014) 757 F3d 1017:</named-content>
   </p>
   <p content-type="emCase">
      <named-content content-type="emEntry">Ambat v City &amp; County of San Francisco (ND Cal 2010) 693 F Supp 2d 1130, rev’d on other grounds (9th Cir 2014) 757 F3d 1017:</named-content>
   </p>
   <p content-type="emCase">
      <named-content content-type="emEntry">Anaheim Union High Sch. Dist. (2016) PERB Dec. No. 2504E, 41 PERC 80:</named-content>
   </p>
   <p content-type="emCase">
      <named-content content-type="emEntry">Anaheim Union High Sch. Dist. (1981) PERB Dec. No. 0177E, 5 PERC 12148:</named-content>
   </p>
   <p content-type="emCase">
      <named-content content-type="emEntry">Artec Group v Klimov (ND Cal, Dec. 22, 2015) 2016 US Dist Lexis 170194:</named-content>
   </p>
   <p content-type="emCase">
      <named-content content-type="emEntry">Artec Group v Klimov (ND Cal, Nov. 22, 2015) 2015 US Dist Lexis 171698:</named-content>
   </p>
   <p content-type="emCase">
      <named-content content-type="emEntry">O’Connor v Uber Technols., Inc. (2018) 904 F3d 1087:</named-content>
   </p>
   <p content-type="emCase">
      <named-content content-type="emEntry">O’Connor v Uber Technols., Inc. (ND Cal 2015) 82 F Supp 3d 1133:</named-content>
   </p>
   <p content-type="emCase">
      <named-content content-type="emEntry">O’Connor v Uber Technols., Inc. (ND Cal, Dec. 05, 2013, No. C–13–3826 EMC) 2013 US Dist Lexis 171813, rev’d on other grounds (9th Cir 2018) 904 F3d 1087:</named-content>
   </p>
   <p content-type="emCase">
      <named-content content-type="emEntry">Swarmify, Inc. v Cloudflare, Inc. (ND Cal, Sept. 28, 2018, No. C 17-06957 WHA) 2018 US Dist Lexis 168317:</named-content>
   </p>
   <p content-type="emCase">
      <named-content content-type="emEntry">Swarmfly, Inc. v Cloudflare, Inc. (ND Cal, May 31, 2018, No. C 17-06957 WHA) 2018 US Dist Lexis 91333:</named-content>
   </p>
   <p content-type="emCase">
      <named-content content-type="emEntry">Swarmify, Inc. v Cloudflare, Inc. (ND Cal, Mar. 3, 2018, No. C 17-06597 WHA) 2018 WL 112204:</named-content>
   </p>
   <p content-type="emCase">
      <named-content content-type="emEntry">Zody v Microsoft Corp. (ND Cal, July 24, 2013, No. C–12–00942–YGR) 2013 US Dist Lexis 103868:</named-content>
   </p>
   <p content-type="emCase">
      <named-content content-type="emEntry">Zody v Microsoft Corp. (ND Cal, June 7, 2013, No. C–12–00942–YGR) 2013 US Dist Lexis 80623:</named-content>
   </p>
</root>

CODE

：https://xsltfiddle.liberty-development.net/pNmC4Jf/19 如何解决排序时发现的不可比较类型：无法将xs：date与xs：integer比较这行显示错误O'Connor v Uber Technols。，Inc.（ND Cal，2013年12月5日，编号C。 ..

Answer 1

let $date := mf:extract-date(.) return if (exists($date)) then $date else 1可能是罪魁祸首，您将需要使用一些默认的xs:date，不确定要使用哪个基准日期，但是可以使用例如else xs:date('1900-01-01')。