copy xml to xml (with java script)

Umen · September 12th, 2004, 02:30 AM

Hello experts !
this is my first post in this msg forum so be gentle ...
im trying to find a way to copy xml structure from xml file to different xml structure .
the thing is that the the second xml the one i like to copy from i need it without the root tag.
tnx

joefawcett · September 12th, 2004, 05:03 AM

The most likely solution sounds like using XSLT and the identity template. You will have to add a matching template for any nodes you want to modify or edit:

Code:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

  <xsl:template match="node()|@*">

    <xsl:copy>

      <xsl:apply-templates select="node()|@*"/>
    </xsl:copy>
  </xsl:template>
  <!--
    Templates to match nodes that need changing go here
  -->
</xsl:stylesheet>

To remove the document element you must make sure that the new document is well formed or output as text. For example if your xml is:

Code:

<oldDocElement>
  <newDocElement>
    <data>Hello, World!</data>
  </newDocElement>
</oldDocElement>

then add a template body to process oldDocElement:

Code:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

  <xsl:template match="node()|@*">

    <xsl:copy>

      <xsl:apply-templates select="node()|@*"/>
    </xsl:copy>
  </xsl:template>
  <!--
    Templates to match nodes that need changing go here
  -->
  <xsl:template match="oldDocElement">

    <xsl:apply-templates select="node()"/>  
  </xsl:template>
</xsl:stylesheet>

For details of how to use JavaScript to apply tranforms see the Ms xml 4 core services sdk at http://msdn.microsoft.com/library/de...l/xmmscXML.asp

or better still download the docs from http://msdn.com/xml.

--

Joe (Co-author Beginning XML, 3rd edition)

joefawcett · September 13th, 2004, 03:17 AM

After posting I realised that although the identity template provides a good generic solution to your problem a more straightforward approach if you just want to copy everything except the document element would be:

Code:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:template match="/">
    <xsl:copy-of select="*/*"/>
  </xsl:template>
</xsl:stylesheet>

--

Joe (Co-author Beginning XML, 3rd edition)

Umen · September 14th, 2004, 05:52 AM

tnx for the replay , i tried to look in to the msdn xml + js examples put with no real luck i also tried to get help from google but with no much luck.
can someone give some basic examples in js to me get the basic idea.
tnx

joefawcett · September 14th, 2004, 06:51 AM

I find it hard to believe you can't find any examples but here is some code to start you off, assuming your source file is oldXml.xml, the result file is newXml.xml and your transform is called removeDocElement.xsl and they are in the same folder as the following js file:

Code:

var _oDom = null;
function getSyncDom()
{
  if (!_oDom)
  {
    _oDom = new ActiveXObject("Msxml2.DomDocument.4.0");
    _oDom.async = false;
  }
  return _oDom.cloneNode(false);  
}

function doTransform(SourceDom, StyleDom)
{
  var oResultDom = getSyncDom(); 
  SourceDom.transformNodeToObject(StyleDom, oResultDom);
  return oResultDom;
}

function getErrorDescription(err)
{
  var sErrorMessage = "Error on line: " + err.line
                    + "\nat position: " + err.linePos
                    + "\nsource: " + err.srcText
                    + "\nreason: " + err.reason;
  return sErrorMessage;
} 

function main()
{
  var oSource = getSyncDom();
  var bSuccess = oSource.load("oldXml.xml");
  if (!bSuccess)
  {
    WScript.echo(getErrorDescription(oSource.parseError));
    return;
  }
  var oStyle = getSyncDom();
  bSuccess = oStyle.load("removeDocElement.xsl");
  if (!bSuccess)
  {
    WScript.echo(getErrorDescription(oStyle.parseError));
    return;
  }
  var oResult = doTransform(oSource, oStyle);
  oResult.save("newXml.xml");
  WScript.echo(oResult.xml);
}

main();

--

Joe (Co-author Beginning XML, 3rd edition)