Question

Ignore Uppercase Lowercase XML Nodes

Asked by: jay_eire

Hi Guys,
I have some XSL that is searching an XML file based on artist name (please see code snippets), I want to bring back artist nodes regardless of case for example if the user enters the artist name as Bob Dylan or BOB DYLAN or bob Dylan it should still return back the same nodes, at present it will only return back the node if it is entered exactly as it appears in the XML file, is it possible to ignore case in XSL?

Thanks
Jay

**************
XSL
**************
 
<?xml version="1.0" encoding="iso-8859-1"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:param name="artistname"></xsl:param>
  <xsl:template match="/">
    <html>
      <body>
        <h2>My CD Collection</h2>
        <table border="1">
          <tr bgcolor="#9acd32">
            <th>Title</th>
            <th>Artist</th>
            
          </tr>
          <xsl:for-each select="catalog/cd[artist=$artistname]">
            <tr>
              <td>
                <xsl:value-of select="title"/>
              </td>
              <td>
                <xsl:value-of select="artist"/>
              </td>
            </tr>
          </xsl:for-each>
          <xsl:if test="not(catalog/cd[artist=$artistname])">
            <tr bgcolor="red">
              <td colspan="2">No Results Found</td>
            </tr>
          </xsl:if>
        </table>
      </body>
    </html>
  </xsl:template>
</xsl:stylesheet>
 
**************
XML
**************
 
 
<?xml version="1.0" encoding="iso-8859-1"?>
<?xml-stylesheet type="text/xsl" href="cdcatalog.xsl"?>
<!-- Edited by XMLSpy® -->
<catalog>
  <cd>
    <title>Empire Burlesque</title>
    <artist>Bob Dylan</artist>
    <country>USA</country>
    <company>Columbia</company>
    <price>10.90</price>
    <year>1985</year>
    <link>www.google.com</link>
  </cd>
  <cd>
    <title>Hide your heart</title>
    <artist>Bonnie Dylan</artist>
    <country>UK</country>
    <company>CBS Records</company>
    <price>9.90</price>
    <year>1988</year>
    <link>www.yahoo.com</link>
  </cd>
  <cd>
    <title>Greatest Hits</title>
    <artist>Bob Parton</artist>
    <country>USA</country>
    <company>RCA</company>
    <price>9.90</price>
    <year>1982</year>
    <link>www.bing.com</link>
  </cd>
  <cd>
    <title>Still got the blues</title>
    <artist>Gary Moore</artist>
    <artist>Dylan</artist>
    <country>UK</country>
    <company>Virgin records</company>
    <price>10.20</price>
    <year>1990</year>
    <link>www.google.au</link>
  </cd>
 
  <cd>
    <title>Eros</title>
    <artist>Eros Ramazzotti</artist>
    <country>EU</country>
    <company>BMG</company>
    <price>9.90</price>
    <year>1997</year>
    <link>www.google.es</link>
  </cd>
  <cd>
    <title>One night only</title>
    <artist>Bee Gees</artist>
    <country>UK</country>
    <company>Polydor</company>
    <price>10.90</price>
    <year>1998</year>
    <link>www.google.com</link>
  </cd>
  <cd>
    <title>Sylvias Mother</title>
    <artist>Dr.Hook</artist>
    <country>UK</country>
    <company>CBS</company>
    <price>8.10</price>
    <year>1973</year>
    <link>www.amazon.com</link>
  </cd>
  <cd>
    <title>Soulsville</title>
    <artist>Jorn Hoel</artist>
    <country>Norway</country>
    <company>WEA</company>
    <price>7.90</price>
    <year>1996</year>
    <link>www.google.co.uk</link>
  </cd>
  <cd>
    <title>The very best of</title>
    <artist>Cat Stevens</artist>
    <country>UK</country>
    <company>Island</company>
    <price>8.90</price>
    <year>1990</year>
    <link>www.google.de</link>
  </cd>
 
</catalog>

                                  
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Asked On
2009-06-15 at 14:20:01ID24493766
Topics

Extensible Markup Language (XML)

,

Extensible Stylesheet Language Transformation (XSLT)

,

XQuery

Participating Experts
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Points
500
Comments
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Answers

 

by: GertonePosted on 2009-06-15 at 14:27:46ID: 24633217

<?xml version="1.0" encoding="iso-8859-1"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:param name="artistname">bob dylan</xsl:param>
    <xsl:variable name="lc">
        <xsl:text>abcdefghijklmnopqrstuvwxyz</xsl:text>
    </xsl:variable>
    <xsl:variable name="uc">
        <xsl:text>ABCDEFGHIJKLMNOPQRSTUVWXYZ</xsl:text>
    </xsl:variable>
    <xsl:template match="/">
        <html>
            <body>
                <h2>My CD Collection</h2>
                <table border="1">
                    <tr bgcolor="#9acd32">
                        <th>Title</th>
                        <th>Artist</th>
                        
                    </tr>
                    <xsl:for-each select="catalog/cd[translate(artist, $lc, $uc)= translate($artistname, $lc, $uc)]">
                        <tr>
                            <td>
                                <xsl:value-of select="title"/>
                            </td>
                            <td>
                                <xsl:value-of select="artist"/>
                            </td>
                        </tr>
                    </xsl:for-each>
                    <xsl:if test="not(catalog/cd[artist=$artistname])">
                        <tr bgcolor="red">
                            <td colspan="2">No Results Found</td>
                        </tr>
                    </xsl:if>
                </table>
            </body>
        </html>
    </xsl:template>
</xsl:stylesheet>
                                              
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by: zc2Posted on 2009-06-15 at 14:28:23ID: 24633224

in XSLT v1 you need to use the translate() function, like
select="catalog/cd[translate(artist,'qwertyuiopasdfghjklzxcvbnm','QWERTYUIOPASDFGHJKLZXCVBNM')=$artistname]"

(and pass the $artist param in uppercase)

 

by: GertonePosted on 2009-06-15 at 14:31:04ID: 24633247

Hi Jay,

XSLT2 has an upper-case() and a lower-case() function (actually XPath2 has)
In XSLT1, your only option is using a translate function
A translate function has three arguments
each character in the first argument that matches a character in the second argument at a certain position
will be replaced by the character at the same position in the third argument
that way, using the strings $lc and $uc, you can make an uppercase

 

by: GertonePosted on 2009-06-15 at 14:35:20ID: 24633269

note that
translate(artist, $lc, $uc) will uppercase artist
where
translate(artist, $uc, $lc) would lowercase

 

by: jay_eirePosted on 2009-06-15 at 14:46:48ID: 24633333

thanks for the replies,

Gertone in your example this is working perfect but the XSL if statement is being returned also.....ive attached my form im using, basically i entered a Bob Dylan as Bob dylan and then another search Gary Moore as gary moore but the No Results Found is being returned along with the nodes ...is there anyway around this?

 <xsl:if test="not(catalog/cd[artist=$artistname])">
            <tr bgcolor="red">
              <td colspan="2">No Results Found</td>
            </tr>
          </xsl:if>


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>Untitled Page</title>
    <script type="text/javascript">
        var xmlDoc;
        var xslt;
        
        function BuildResult() {           
            //code for Internet Explorer
            if (window.ActiveXObject) {
                xslt = new ActiveXObject("Msxml2.XSLTemplate");
                var xslDoc = new ActiveXObject("Msxml2.FreeThreadedDOMDocument");
 
                xslDoc.async = false;
                xslDoc.resolveExternals = false;
                xslDoc.load("cdcatalog.xsl");
                xslt.stylesheet = xslDoc;
                
                xmlDoc = new ActiveXObject("Msxml2.DOMDocument");
                xmlDoc.async = false;
                xmlDoc.resolveExternals = false;
                xmlDoc.load("cdcatalog.xml");
                
                displayResult();
            }
            // code for Mozilla, Firefox, Opera, etc.
            else if (document.implementation && document.implementation.createDocument) {
                objXml = document.implementation.createDocument("", "", null);
                objXml.load("cdcatalog.xml");
 
                objXsl = document.implementation.createDocument("", "", null);
                objXsl.load("cdcatalog.xsl");
 
                objXsl.onload = displayResult;
            }
 
        }
        function displayResult() {
            var artistname = document.getElementById('q').value;
 
            if (window.ActiveXObject) {
                var xslProc = xslt.createProcessor();
                xslProc.input = xmlDoc;
                xslProc.addParameter("artistname", artistname);
                xslProc.transform();
                document.getElementById('divResult').innerHTML = xslProc.output;
            }
            else {
                var processor = new XSLTProcessor();
                processor.importStylesheet(objXsl);
 
                processor.setParameter(null, "artistname", artistname);
                
                var trandoc = processor.transformToFragment(objXml, document);
                document.getElementById('divResult').innerHTML = "";
                document.getElementById('divResult').appendChild(trandoc);
            }            
        }
    </script>
 
</head>
<body>
   
         Find <input type="text" id="q" />
         <input type="button" value="Go" onclick="BuildResult()" />
     <div id="divResult"> </div>    
</body>
</html>
                                              
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by: GertonePosted on 2009-06-15 at 14:50:17ID: 24633352

I forgot to add the test to the other predicate too

 <xsl:if test="not(catalog/cd[artist=$artistname])">

should be

<xsl:if test="not(catalog/cd[translate(artist, $lc, $uc)= translate($artistname, $lc, $uc)]">

 

by: GertonePosted on 2009-06-15 at 14:51:25ID: 24633357

Sorry for not paying more attention...

here is the full stylesheet again, corrected this time

<?xml version="1.0" encoding="iso-8859-1"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:param name="artistname">bob dylan</xsl:param>
    <xsl:variable name="lc">
        <xsl:text>abcdefghijklmnopqrstuvwxyz</xsl:text>
    </xsl:variable>
    <xsl:variable name="uc">
        <xsl:text>ABCDEFGHIJKLMNOPQRSTUVWXYZ</xsl:text>
    </xsl:variable>
    <xsl:template match="/">
        <html>
            <body>
                <h2>My CD Collection</h2>
                <table border="1">
                    <tr bgcolor="#9acd32">
                        <th>Title</th>
                        <th>Artist</th>
                        
                    </tr>
                    <xsl:for-each select="catalog/cd[translate(artist, $lc, $uc)= translate($artistname, $lc, $uc)]">
                        <tr>
                            <td>
                                <xsl:value-of select="title"/>
                            </td>
                            <td>
                                <xsl:value-of select="artist"/>
                            </td>
                        </tr>
                    </xsl:for-each>
                    <xsl:if test="not(catalog/cd[translate(artist, $lc, $uc)= translate($artistname, $lc, $uc)])">
                        <tr bgcolor="red">
                            <td colspan="2">No Results Found</td>
                        </tr>
                    </xsl:if>
                </table>
            </body>
        </html>
    </xsl:template>
</xsl:stylesheet>
                                              
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by: jay_eirePosted on 2009-06-15 at 14:54:28ID: 24633380

excellent XSL is really powerful, thank you for the help.

 

by: GertonePosted on 2009-06-15 at 14:56:09ID: 24633390

welcome

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