Issue in loading xml in ipl using "Microsoft.XMLDOM"

Hi,
I have a requirement where on the click of a callout button I am showing a html page with dropdown which has the values from an xml(I am doing this thru IPL). Onclick of ok, the value that was chosen by the user has to be set in the field and also based on the value chosen I need to take out a corresponding attribute from the xml. So I need to parse the same xml again. So I am using Microsoft.XMLDOM ActiveXObject for that in the javascript function. But I am not sure how to give the path of the xmlfile that has to be loaded.

I am doing like this

function loadXML(xmlFile)
{
xmlDoc.async="false";
xmlDoc.onreadystatechange=verify;
xmlDoc.load(xmlFile);
xmlObj=xmlDoc.documentElement;
}
function verify()
{
// 0 Object is not initialized
// 1 Loading object is loading data
// 2 Loaded object has loaded data
// 3 Data from object can be worked with
// 4 Object completely initialized
if (xmlDoc.readyState != 4)
{
return false;
}
}

loadXML('testxml.xml');
alert(xmlObj.xml);

I am getting null in the alert.

That is, the xml i am giving is not getting loaded...I also tried giving the path from C:\.. and also iw-bin\ it doesnt work either. Can anyone tell me how to get the xml read..

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Comments

TheYann

If you're doing that in javascript you must be sure that your xml file is on the client machine ... which doesn't seem right to me!

I would use a callserver instead if I were you, call a perl script, extract all the values you need and then you can popup the window you want at the end of the perl script.

Remember: Javascript is CLIENT-SIDE!!!

sariba

Thanks for the response. Now I understood the issue. So I am dropping that idea. Ok. I have tried out the way you have suggested,ie) I populate an array with the attributes for all the nodes (I need the attribute only of one whose value has been chosen in the dropdown shown in the window that opens on the callout) on the first time I am loading. The thing is again the array I have set is not accessible in the javascript.. I am attaching the code for reference..value2 is the attribute I am trying to get based on the value I choose.

TheYann

Create an array in javascript (so dump the javascript code on the output) and then in javascript call the caller DCT javascript frame.

var caller = opener.parent.getScriptFrame()

Now caller has access to your DCT javascript, you can now call your javascript functions like so:

caller.verify (myArray);

See what I mean?

sariba

Hi,
I have an ipl, which has both perlscript and javascript. I am creating an array in the javascript only and populating it using perlscript. The issue I am facing is not in accessing the function or the item that has to be set in DCT. The issue is I am not able to access the array itself that was set by the perlscript(I have attached the code with some comments in the previous reply). I have a caller variable called "oWindow" in the Code. Can u pls get me some idea on how to do go abt this?

TheYann

It depends on how you're accessing your perl script, using a cgi callout or a callserver for instance.

I don't really understand what you're trying to do, if you perl script you succeeded to generate a javascript array, what's the problem?
I'm really not sure of what you're trying to achieve!

sariba

I ll explain..

I have two items,1)minValue,2) value2...

minValue is a textbox and has a callout button..On the click of the button I am calling an ipl. The ipl parses the xml and populates the dropdown in a new html window. When we select the value from the dropdown and click OK the window gets closed and the value gets populated in the the textbox in the DCT.

I am done with this part...

Now the issue part...value 2 is hiddenvalue.I want to populate value2(which is an attribute of the node corresponding to the minValue chosen in xml) based on the value chosen in the minValue. If I want to call another IPL to do this,I dont have any event left now, since onItemChange doesnt work. So what I am trying is to get the value2 also during the click of ok button only. So while I am parsing the xml in the beginning I am storing value2 values in an array.. And on the click of the ok button I want get the value2 corresponding to the minValue selected from the array that I have populated..

I have been able to do this in ordinary ipls where we pass the array directly to a function in DCT javascript for setting..But here where I am opening a new html window, I am not able to access the array..It says the array is undefined..

So thats it..Hope I have been clear..

Thanks

TheYann

Ok but as I was saying before you can use the "opener" variable to access the javascript from of the caller frame.
In other words you have plenty of possibilities!

In your callout perl script, at some point you must be setting the variable

var myItem = opener.IWDatacapture.getItem("itemname");

Nothing stops you from doing more than that!

opener.IWDatacapture.callserver ("call another ipl")

But quite frankly this seems to make things a bit more complicated!

Just remember that in your ipl you have access to everything you want, the opener variable gives you that access!
So all you have to do is something like this:

var myHiddenItem = opener.IWDatacapture.getItem("hiddenitemname");
eval ("myHiddenItem.setValue ('$value2');");

In this case the eval() function will translate the perl $value2 variable and evaluate its value into the javascript code.
All in all I really don't think you need very complicated code to achieve your goal!

Hope this helps

sariba

Thanks a lot. I got it resolved. This ipl call with in another didnt work-the control didnt come back to the original ipl..nor didnt go to the js called in the second ipl(may be there was some error in my IPL-not sure cudnt explore further). I get it stored in an array when I parse for the first time only and use it later.