Question

Xpath with wildcards

Asked by: calvinfoo

1. I have a list of books arranged in XML format like below (stripped down)
2. User type in any words and the system will match the words to the book title and return the sorted result.

3. I am currently facing problem on using wildcard,
4. I am just using Javascript to loop the XML

On below is my part of my problematic script that doesn't work, I hope somebody can do correction on it


----------------------------------
var myKeyword = "coral" //User enter keywords...

xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async=false;
xmlDoc.load("books.xml");
var root = xmlDoc.documentElement;
var myNodes = root.selectSingleNode("/XML");
var myXpath = "BOOK";


myXpath += "[contains(TITLE, '" + myKeyword  + "')]" //put the keywords into the Xpath... problems....

var myNodes2 = myNodes.selectNodes(myXpath);
for (i=0; i < myNodes2.length; i++)
{
 //loop and display...
 var myStr += myNodes2[i].selectSingleNode("TITLE").text;
}
myDiv.innerHTML = myStr;

---------------------------------------------------------
<XML>
<BOOK>
<TITLE>A preliminary report on the diversity and feeding relationship of reef fishes of One Tree Island, Great Barrier Reef system,</TITLE>
</BOOK>
<BOOK>
<TITLE>A preliminary underwater survey of the extent of the coral reefs in and around some of the islands in the Gulf of Mannar,</TITLE>
</BOOK>
</XML>

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Asked On
2005-09-29 at 22:02:03ID21579365
Tags

xpath

,

wildcard

Topic

Miscellaneous Web Development

Participating Experts
1
Points
300
Comments
4

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Answers

 

by: PraxisWebPosted on 2005-09-30 at 07:45:58ID: 14992756

There are a few problems I noted:
1) Not sure where your script was executing from, but you need to make sure myDiv exists before setting its value.
2) contains was not supported as an XPATH function until MSXML 4.0
3) Your initial string declaration 'myStr' needs to be outside the loop.

<html>
 <head>
  <script language="JavaScript" type="text/javascript">
function onload(){
var myKeyword = "coral";
xmlDoc = new ActiveXObject("Msxml2.DOMDocument.4.0");
xmlDoc.async=false;
xmlDoc.load("books.xml");

var root = xmlDoc.documentElement;
var myNodes = root.selectSingleNode("/XML");
var myXpath = "BOOK";

myXpath += "[contains(TITLE, '" + myKeyword  + "')]";

var myNodes2 = myNodes.selectNodes(myXpath);
var myStr ='';

for (i=0; i < myNodes2.length; i++)
{
 myStr+= myNodes2[i].selectSingleNode("TITLE").text;
}
document.all['myDiv'].innerHTML = myStr;
}
  </script>
 </head>
 <body onload="onload()">
  <div id="myDiv" name="myDiv">&nbsp;</div>
 </body>
</html>


If you get a "Cannot create automation object message" with the above code, then you will need to download msxml 4 (sp2)from microsoft.

www.microsoft.com/xml

 

by: PraxisWebPosted on 2005-10-06 at 12:25:04ID: 15033530

cavinfoo,
  Have you tried updating msxml and using the code above?

-Jason

20120131-EE-VQP-002

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