Re: [xsl] Str:tokenize modification to change the <token> tag

["Vasu Chakkera" <vasucv at hotmail dot com>]

Hi Naresh. I know i am very late in answering your question. You might have 
already found your answer with the XSL gurus in this list.
I However want to post a solution that i had done earlier
The following is my solution
1. Write a Java Class and add the following method in it

  public Node getTokenizedNode(String str, String delim) {
        System.out.println(str);
        StringTokenizer strTokeniser = new StringTokenizer(str, delim, 
false);
        Document doc = null;
        Element tokens = null;
        // Create Document object

        try {
            doc = 
DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
            tokens = doc.createElement("tokens");
            while (strTokeniser.hasMoreTokens()) {
                String token = strTokeniser.nextToken();
                System.out.println(token);
                Element tokenTag = doc.createElement("token");
                tokenTag.appendChild(doc.createTextNode(token));
                tokens.appendChild(tokenTag);
            }

        } catch (ParserConfigurationException pce) {
            pce.printStackTrace();
        }
        catch(TransformerConfigurationException tce)
        {
         tce.printStackTrace();
        }
        catch(TransformerException te)
        {
         te.printStackTrace();
        }
        System.out.println("before returning");
        return tokens;
    }

If your delimited String is "A,B,C,D"
( here delimiter is comma , it could be anything.. and is in your control 
from XSL Sheet )
This Method will return to the XSL the XML element tokens , which is of the 
structure
<tokens>
<token></token>
<token></token>
<token></token>
<token></token>
</tokens>

For an XML File like below
<delimitedStrings>
<delimitedString delim = "|">
pipe1|pipe2|pipe3|pipe4
</delimitedString>

<delimitedString delim = ",">
comma1,comma2,comma3,comma4
</delimitedString>

<delimitedString delim = ":" >
colon1:colon2:colon3:colon4
</delimitedString>

</delimitedStrings>

Now your XSL sheet would look like this

<?xml version="1.0"?>
<xsl:stylesheet version="1.0" 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:xalan = "http://xml.apache.org/xalan"; exclude-result-prefixes="xalan"
xmlns:myclass= "myPackage.myClass"  extension-element-prefixes ="myclass">
<xsl:template match="/">

<xsl:apply-templates select="//delimitedString"/>
</xsl:template>

<xsl:template match="delimitedString">
<xsl:variable name="delimString" select="."/>
<xsl:variable name="delim" select="./@delim"/>
<!-- call your java method passing the String and the delimiter -->
<xsl:apply-templates 
select="myclass:getTokenizedNode($delimString,$delim)"/>
</xsl:template>

<xsl:template match="//tokens">

<xsl:apply-templates select="token"/>
</xsl:template>

<xsl:template match="token">
<!-- Here You have them with you -->
<xsl:value-of select="."/> <!-- Each token with you -->
<xsl:text>&#xa;</xsl:text>
</xsl:template>
</xsl:stylesheet>

your text output.


pipe1
pipe2
pipe3
pipe4


comma1
comma2
comma3
comma4


colon1
colon2
colon3
colon4

The above method would give you good understanding of the JAVA-XSL 
communication ... and you can create your own classes to do utility stuff 
like this and use them. Please note that in the XSL code above the namespace 
declaration is important
xmlns:myclass= "myPackage.myClass"  extension-element-prefixes ="myclass"
myPackage is the package of your class and
myClass is the class that defines the above method..
you might then want to add a functionality that would allow ur XSL to read 
from a file and display its contents. so you might want to then add a method 
to the same class like below
    public static String getFileContents(String fileName) throws IOException 
{

        FileInputStream fi = new FileInputStream(fileName);
        StringBuffer buf = new StringBuffer();
        int fileSize = fi.available();
        for (int i = 0; i < fileSize; i++) {
            buf.append((char) fi.read());
        }
        //*** read operation
        fi.close();
        return buf.toString();
    }
and in the XSL where you would want to display the file contents , just call 
the xsl:value-of like

<xsl:value-of disable-output-escaping="yes" select 
="myclass:getFileContents('c:/myfile.txt)"/>

this would print the file contents to your output..
just keep adding the functionality u want in your java code and use them in 
your XSL.

Hope this helps
Vasu

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