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Re: [xsl] Returning item type of variable (problems with maps)

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On Wed, Mar 26, 2014 at 3:57 PM, David Rudel <fwqhgads@xxxxxxxxx> wrote:
> Is there a simple way to report the type of a variable for de-bugging purposes?

Hi David,

You can use the f:type() function from FXSL 2.x

Here is the test for it:

<xsl:stylesheet version="2.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
 xmlns:xdt="http://www.w3.org/2005/04/xpath-datatypes"
 xmlns:xs="http://www.w3.org/2001/XMLSchema"
 xmlns:f="http://fxsl.sf.net/"
 exclude-result-prefixes="f xs xdt"
 >
  <xsl:import href="../f/func-type.xsl"/>

  <!-- To be applied on ../data/numList.xml -->

  <xsl:output omit-xml-declaration="yes"/>

  <xsl:template match="/">
    f:apply(f:typeConstructor(11),'03'): <xsl:value-of
select="f:apply(f:typeConstructor(11),'03')"/>
    f:apply(f:typeConstructor('xxx'),'03'): <xsl:value-of
select="f:apply(f:typeConstructor('xxx'),'03')"/>
    f:apply(f:typeConstructor(11),'03') gt 4: <xsl:value-of
select="f:apply(f:typeConstructor(11),'03') gt 4"/>
    f:type(f:apply(f:typeConstructor(11),'03')): <xsl:value-of
select="f:type(f:apply(f:typeConstructor(11),'03'))"/>
    f:type(f:apply(f:typeConstructor('string'), 3)): <xsl:value-of
select="f:type(f:apply(f:typeConstructor('string'),'03'))"/>
<!--  Supported only by a SA Processor -->
    xs:token('abc') : <xsl:value-of  select="f:type(xs:token('abc'))"
       use-when="system-property('xsl:is-schema-aware')='yes'"/>
    -1 : <xsl:value-of select="f:type(-1)"/>
<!--  Supported only by a SA Processor -->
    xs:negativeInteger(-1) : <xsl:value-of
select="f:type(xs:negativeInteger(-1))"
       use-when="system-property('xsl:is-schema-aware')='yes'" />
    xs:nonPositiveInteger(0) : <xsl:value-of
select="f:type(xs:nonPositiveInteger(0))"
       use-when="system-property('xsl:is-schema-aware')='yes'" />
    0 : <xsl:value-of select="f:type(0)"/>
    3 : <xsl:value-of select="f:type(3)"/>
    3. : <xsl:value-of select="f:type(3.)"/>
    3.0E1 : <xsl:value-of select="f:type(3.0E1)"/>
    xs:float(3) : <xsl:value-of select="f:type(xs:float(3))"/>
<!--  Supported only by a SA Processor -->
    xs:positiveInteger(3) : <xsl:value-of select="f:type(xs:positiveInteger(3))"
       use-when="system-property('xsl:is-schema-aware')='yes'" />
   '3' : <xsl:value-of select="f:type('3')"/>
   (/*/*/text())[1] : <xsl:value-of select="f:type((/*/*/text())[1])"/>
   data((/*/*/text())[1]) : <xsl:value-of
select="f:type(data((/*/*/text())[1]))"/>
  </xsl:template>
</xsl:stylesheet>

when applied on the following source XML  document:

<nums>
  <num>01</num>
  <num>02</num>
  <num>03</num>
  <num>04</num>
  <num>05</num>
  <num>06</num>
  <num>07</num>
  <num>08</num>
  <num>09</num>
  <num>10</num>
</nums>

the expected, correct result is produced (the four empty types are due
to the fact that I am using a non-SA processor here):


    f:apply(f:typeConstructor(11),'03'): 3
    f:apply(f:typeConstructor('xxx'),'03'): 03
    f:apply(f:typeConstructor(11),'03') gt 4: false
    f:type(f:apply(f:typeConstructor(11),'03')): xs:integer
    f:type(f:apply(f:typeConstructor('string'), 3)): xs:string
    xs:token('abc') :
    -1 : xs:integer
    xs:negativeInteger(-1) :
    xs:nonPositiveInteger(0) :
    0 : xs:integer
    3 : xs:integer
    3. : xs:decimal
    3.0E1 : xs:double
    xs:float(3) : xs:float
    xs:positiveInteger(3) :
   '3' : xs:string
   (/*/*/text())[1] : xml:node
   data((/*/*/text())[1]) : xs:string


And here is the code of f:type itself (you'll need a few more FXSL
functions that are in the import graph):

<xsl:stylesheet version="2.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
 xmlns:xs="http://www.w3.org/2001/XMLSchema"
 xmlns:f="http://fxsl.sf.net/"
 exclude-result-prefixes="f xs"
 >
  <xsl:import href="../f/func-XpathConstructors.xsl"/>
  <xsl:output omit-xml-declaration="yes"/>

  <xsl:key name="kConstructor" match="*" use="@t"/>

  <xsl:variable name="f:vTypeConstructors">
    <f:unsignedByte t="xs:unsignedByte"/>
    <f:unsignedShort t="xs:unsignedShort"/>
    <f:unsignedInt t="xs:unsignedInt"/>
    <f:unsignedLong t="xs:unsignedLong"/>
    <f:positiveInteger t="xs:positiveInteger"/>
    <f:nonNegativeInteger t="xs:nonNegativeInteger"/>
    <f:nonPositiveInteger t="xs:nonPositiveInteger"/>
    <f:byte t="xs:byte"/>
    <f:short t="xs:short"/>
    <f:int t="xs:int"/>
    <f:long t="xs:long"/>
    <f:integer t="xs:integer"/>
    <f:decimal t="xs:decimal"/>
    <f:double t="xs:double"/>
    <f:float t="xs:float"/>
    <f:NMTOKEN t="xs:NMTOKEN"/>
    <f:NMTOKENS t="xs:NMTOKENS"/>
    <f:ENTITIES t="xs:ENTITIES"/>
    <f:ENTITY t="xs:ENTITY"/>
    <f:IDREF t="xs:IDREF"/>
    <f:IDREFS t="xs:IDREFS"/>
    <f:ID t="xs:ID"/>
    <f:NCName t="xs:NCName"/>
    <f:Name t="xs:Name"/>
    <f:language t="xs:language"/>
    <f:token t="xs:token"/>
    <f:normalizedString t="xs:normalizedString"/>
    <f:boolean t="xs:boolean"/>
    <f:duration t="xs:duration"/>
    <f:dateTime t="xs:dateTime"/>
    <f:time t="xs:time"/>
    <f:date t="xs:date"/>
    <f:gYearMonth t="xs:gYearMonth"/>
    <f:gYear t="xs:gYear"/>
    <f:gMonthDay t="xs:gMonthDay"/>
    <f:gDay t="xs:gDay"/>
    <f:gMonth t="xs:gMonth"/>
    <f:base64Binary t="xs:base64Binary"/>
    <f:hexBinary t="xs:hexBinary"/>
    <f:anyURI t="xs:anyURI"/>
    <f:QName t="xs:QName"/>
    <f:NOTATION t="xs:NOTATION"/>
    <f:string t="xs:string"/>
    <f:yearMonthDuration t="xs:yearMonthDuration"/>
    <f:dayTimeDuration t="xs:dayTimeDuration"/>
  </xsl:variable>

  <xsl:function name="f:Constructor" as="element()?">
    <xsl:param name="pTypename" as="xs:string"/>
    <xsl:sequence select="key('kConstructor',
$pTypename,$f:vTypeConstructors)"/>
  </xsl:function>

  <xsl:function name="f:typeConstructor" as="element()">
    <xsl:param name="pThis"/>
    <xsl:sequence select="key('kConstructor',
f:type($pThis),$f:vTypeConstructors)"/>
  </xsl:function>

  <xsl:function name="f:type" as="xs:string?">
    <xsl:param name="pThis"/>

    <xsl:choose>
      <xsl:when test="$pThis instance of xs:decimal">
        <xsl:choose>
          <xsl:when
use-when="system-property('xsl:is-schema-aware')='yes'"
test="true()">
          <xsl:choose>
<!--       Not supported by a Basic XSLT Processor -->
            <xsl:when test="$pThis instance of
xs:unsignedByte">xs:unsignedByte</xsl:when>
            <xsl:when test="$pThis instance of
xs:unsignedShort">xs:unsignedShort</xsl:when>
            <xsl:when test="$pThis instance of
xs:unsignedInt">xs:unsignedInt</xsl:when>
            <xsl:when test="$pThis instance of
xs:unsignedLong">xs:unsignedLong</xsl:when>

            <xsl:when test="$pThis instance of
xs:positiveInteger">xs:positiveInteger</xsl:when>
            <xsl:when test="$pThis instance of
xs:nonNegativeInteger">xs:nonNegativeInteger</xsl:when>

            <xsl:when test="$pThis instance of
xs:negativeInteger">xs:negativeInteger</xsl:when>
            <xsl:when test="$pThis instance of
xs:nonPositiveInteger">xs:nonPositiveInteger</xsl:when>

            <xsl:when test="$pThis instance of xs:byte">xs:byte</xsl:when>
            <xsl:when test="$pThis instance of xs:short">xs:short</xsl:when>
            <xsl:when test="$pThis instance of xs:int">xs:int</xsl:when>
            <xsl:when test="$pThis instance of xs:long">xs:long</xsl:when>
           </xsl:choose>
<!--      End of SA only types  -->
     </xsl:when>
          <xsl:when test="$pThis instance of xs:integer">xs:integer</xsl:when>

          <xsl:otherwise>xs:decimal</xsl:otherwise>

        </xsl:choose>
      </xsl:when>
      <xsl:when test="$pThis instance of xs:double">xs:double</xsl:when>
      <xsl:when test="$pThis instance of xs:float">xs:float</xsl:when>
      <xsl:when test="$pThis instance of xs:string">
        <xsl:choose>
          <xsl:when
use-when="system-property('xsl:is-schema-aware')='yes'"
test="true()">
<!--       Not supported by a Basic XSLT Processor -->
            <xsl:choose>
              <xsl:when test="$pThis instance of
xs:NMTOKEN">xs:NMTOKEN</xsl:when>
              <xsl:when test="$pThis instance of xs:ENTITY">xs:ENTITY</xsl:when>
              <xsl:when test="$pThis instance of xs:IDREF">xs:IDREF</xsl:when>
              <!-- TODO: What to do with list simple types?
              <xsl:when test="$pThis instance of
xs:NMTOKEN+">xs:NMTOKENS</xsl:when>
              <xsl:when test="$pThis instance of
xs:ENTITY+">xs:ENTITIES</xsl:when>
              <xsl:when test="$pThis instance of xs:IDREF+">xs:IDREFS</xsl:when>
              -->
              <xsl:when test="$pThis instance of xs:ID">xs:ID</xsl:when>
              <xsl:when test="$pThis instance of xs:NCName">xs:NCName</xsl:when>
              <xsl:when test="$pThis instance of xs:Name">xs:Name</xsl:when>
              <xsl:when test="$pThis instance of
xs:language">xs:language</xsl:when>
              <xsl:when test="$pThis instance of xs:token">xs:token</xsl:when>
              <xsl:when test="$pThis instance of
xs:normalizedString">xs:normalizedString</xsl:when>
              <xsl:otherwise>xs:string</xsl:otherwise>
            </xsl:choose>
          </xsl:when>
          <xsl:when test="true()">xs:string</xsl:when>
        </xsl:choose>
      </xsl:when>

      <xsl:when test="$pThis instance of xs:boolean">xs:boolean</xsl:when>
      <xsl:when test="$pThis instance of xs:duration">xs:duration</xsl:when>
      <xsl:when test="$pThis instance of xs:dateTime">xs:dateTime</xsl:when>
      <xsl:when test="$pThis instance of xs:time">xs:time</xsl:when>
      <xsl:when test="$pThis instance of xs:date">xs:date</xsl:when>
      <xsl:when test="$pThis instance of xs:gYearMonth">xs:gYearMonth</xsl:when>
      <xsl:when test="$pThis instance of xs:gYear">xs:gYear</xsl:when>
      <xsl:when test="$pThis instance of xs:gMonthDay">xs:gMonthDay</xsl:when>
      <xsl:when test="$pThis instance of xs:gDay">xs:gDay</xsl:when>
      <xsl:when test="$pThis instance of xs:gMonth">xs:gMonth</xsl:when>

      <xsl:when test="$pThis instance of
xs:yearMonthDuration">xs:yearMonthDuration</xsl:when>

      <xsl:when test="$pThis instance of
xs:dayTimeDuration">xs:dayTimeDuration</xsl:when>

      <xsl:when test="$pThis instance of
xs:base64Binary">xs:base64Binary</xsl:when>
      <xsl:when test="$pThis instance of xs:hexBinary">xs:hexBinary</xsl:when>
      <xsl:when test="$pThis instance of xs:anyURI">xs:anyURI</xsl:when>
      <xsl:when test="$pThis instance of xs:QName">xs:QName</xsl:when>
      <xsl:when use-when="system-property('xsl:is-schema-aware')='yes'"
           test="$pThis instance of xs:NOTATION">xs:NOTATION</xsl:when>
<!--
      <xsl:when test="$pThis instance of
xs:untypedAtomic">xs:untypedAtomic</xsl:when>
      <xsl:otherwise>Unknown xs:untypedAtomic</xsl:otherwise>
-->
      <xsl:when test="$pThis[1] instance of node()">xml:node</xsl:when>
      <xsl:otherwise>xs:string</xsl:otherwise>
    </xsl:choose>
  </xsl:function>
</xsl:stylesheet>



-- 
Cheers,
Dimitre Novatchev
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Truly great madness cannot be achieved without significant intelligence.
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To invent, you need a good imagination and a pile of junk
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Never fight an inanimate object
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To avoid situations in which you might make mistakes may be the
biggest mistake of all
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Quality means doing it right when no one is looking.
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You've achieved success in your field when you don't know whether what
you're doing is work or play
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To achieve the impossible dream, try going to sleep.
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Facts do not cease to exist because they are ignored.
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Typing monkeys will write all Shakespeare's works in 200yrs.Will they
write all patents, too? :)
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I finally figured out the only reason to be alive is to enjoy it.

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