IT Lesson

public void changeOwner(String user, String fileId, String newOwner) {
   // Find what is the current permission of the new owner on the file
   Permission newOwnerPermission = null;
   PermissionList permissionList = RetriableTask.execute(new DrivePermissionListTask(drive.permissions().list(fileId)));
   newOwnerPermission = findPermission(permissionList, newOwner);

   if (newOwnerPermission == null) {
      // New owner is not in the list, we need to insert it
      newOwnerPermission = new Permission();
      newOwnerPermission.setValue(newOwner);
      newOwnerPermission.setType("user");
      newOwnerPermission.setRole("owner");
      Drive.Permissions.Insert insert = drive.permissions().insert(fileId, newOwnerPermission);
      RetriableTask.execute(new DrivePermissionInsertTask(insert)); 
   } else {
      // New owner is already in the list, update the existing permission
      newOwnerPermission.setRole("owner");
      Drive.Permissions.Update update = drive.permissions().update(fileId, newOwnerPermission.getId(), newOwnerPermission);
      update.setTransferOwnership(true);
      RetriableTask.execute(new DrivePermissionUpdateTask(update));
   }
}

public class RetriableTask implements Callable {
[...]
  private final Callable task;

[...]
  @Override public T call() {
     T result = null;
     try {
        startTime = System.currentTimeMillis();
        result = task.call();
     } catch (NonFatalErrorException e) {
        if (numberOfTriesLeft > 0) {
          // Wait some time, using exponential back-off in case of multiple attempts
          Thread.sleep(getWaitTime());

          // Try again
          result = call();
        } else {
          // Too many failed attempts: now this is a fatal error
          throw new RetryException();
        }
     } catch (FatalErrorException e) {
        // This one should not be retried
        Throwables.propagate(e);
     }
     return result;
  }

Thomas Gerber profile Thomas is the CTO of Altirnao. Before founding Altirnao, Thomas has led a team of senior technologists and architects on High Availability/High Performance implementations of enterprise software.

Posted by Steven Bazyl, Google Apps Marketplace Team

Like any Google service, we’re always working to refine the Google Apps Marketplace for our vendors and their customers. Normally we make small, incremental improvements and let the better experience speak for itself, but this week we think several of the new features are noteworthy enough to point out.

View Enhanced Analytics

A frequently requested feature has been improved analytics. If you have Google Analytics configured for your listing, your analytics profile will now receive the search terms and category selected by your customers.

When a customer searches on the Marketplace, the search results will all have two parameters attached: query and category. You’ll want to add these terms to your Google Analytics Website Profile. The query term will include all of the search terms the user entered into the search box, or it could be blank if the customer found your application through browsing. Similarly, the category parameter will be blank unless the customer narrowed his search or browse by picking the category you chose in your application listing, e.g. Accounting & Finance. Now you’ll have much better data about how a customer has reached your application, whether through browsing, searching, or a combination.

Count Installs

Another developer-focused enhancement we’ve made is adding a count of installs and uninstalls on each application’s listing when signed into the vendor account:

"Net install count" represents the number of current installs -- any uninstalls have already been deducted. If you add "Net install count" to "Uninstall count" you will have the total number of installations for the app since it launched. You are also able to retrieve this information from the Licensing API, but it is nice to have it easily accessible on your listing pages.

Sweep Away Those Dusty Apps

On the Vendor Profile page you’ll also that we’ve added the ability to hide unused applications (and show them again) so that you can manage your applications better and remove clutter on your dashboard. You still cannot delete applications, but you can sweep them under the rug! Note that Hiding and Unhiding are just for managing your list as a Vendor -- they do not change your Publish/Unpublish settings for each app. You can hide a published app as easily as an unpublished app.

Browse Staff Picks on the Home Page

Since announcing the Staff Picks program in May, we’ve featured a number of especially well-integrated and innovative applications on the @GoogleAtWork twitter stream and here on the Google Apps Developer Blog. Now we also feature Staff Picks on the front page of the Marketplace.

You can find four Staff Picks on the Marketplace landing page, chosen from the pool of apps selected as staff picks. See the Staff Picks page on code.google.com for more information on how we choose these apps.

Andy "Rufus" Rothfusz    blog Rufus is a Developer Programs Engineer working on Google Apps APIs and the Google Apps Marketplace. He has over 14 years of experience in developer programs covering a wide range of applications including 3D graphics acceleration, natural language processing, device security, video games and video streaming.

What?
The Webometrics Ranking (of World Universities) is being published since 2004 on a regular basis (every 6 months) using the web data as indicator of the visibility and impact of the activities of the universities, colleges and research institutions worldwide...

Aims?
The Rankings original aim was to show the commitment of these organizations to the electronic publication, the open access to scientific results and the internationalization of their activities. As other rankings are more focused on World Class Universities, our purpose is to offer an extended coverage including information about the developing countries institutions.

Findings?
Webometrics editors are very surprised to discover that Web indicators are not taken into account at all in the evaluation of the universities... The problem is really serious as the data shows a larger than expected academic digital divide affecting also to many developed countries including EU ones and Japan...

How?
The ranking is based on a combined indicator that takes into account both the volume of the Web contents and the visibility and impact of this web publications according to the number of external inlinks (sitations) they received. The ranking is updated every January and July, providing Web indicators for universities and research centres worldwide.

MasterMinds?
The WR is produced by the Cybermetrics Lab (CINDOC), a unit of the National Research Council (CSIC), the main public research body in Spain. The Lab acts as an Observatory of the Science and Technology on the Web.

Top 5 (July 2007)?

1. Stanford University
2. MIT
3. University of California Berkeley
4. Harvard University
5. Pennsylvania State University

Interestingly, ALL the Top 20 Universities according to the Webometrics Ranking (WR) are American! University of Cambridge managed only to get 21st place, and good old Oxford University could amazingly only achieve 40th place (The British Empire is certainly struggling on the Web if we should take WR seriously!). It should also be noted that Harvard still rules in the comparative analysis according to Productivity, Visibility and Impact.

If you look closer at my blog, and explore the right column a bit, I suppose you have one indicator why American Universities dominate the Web according to WR. The key success factor I would argue (according to my understanding) is the willingness, goals, strategies, and actions taken (and financial support provided) by these Universities (or their people) to participate in the Open Educational Resources (OER) global revolution. In other words, to improve ones ranking (WR way!) one needs to SHARE KNOWLEDGE beyond the borders of the University. Why educate only your students, when with todays technologies you can share your knowledge or resources to every corner of the world (Educate the World!). Lets face it content is only one part of the learning process!

Now, lets move one to South-East Asia (Scary!). Below is a selection (interest factor!) of the Regional and Global Ranking of South-East Asia according to the Webometrics Ranking (WR) of World Universities. Click here to download the top 100 list of universities belonging to the South-East of Asia (as of July 2007).

    
    
        MakeMyTrip.com
        MakeMyTrip.com is one of the good website providing Travel services to book oonline Flight,Hotel,Train and Bus tickets with guranteed lowest prices and provides new deals , offers and discount coupons every week and help you save money upto 20% while you travel.
        travellogos/makemytrip-logo.jpg
    
    
        GoIbibo.com
        GoIbibo.com is one of the good website providing Travel services to book oonline Flight,Hotel,Train and Bus tickets with guranteed lowest prices and provides new deals , offers and discount coupons every week and help you save money upto 20% while you travel.
        travellogos/goibibo_logo.png
    
    
        Abhibus.com
        Abhibus.com is one of the good website providing Travel services to book oonline Flight,Hotel,Train and Bus tickets with guranteed lowest prices and provides new deals , offers and discount coupons every week and help you save money upto 20% while you travel.
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        Travelyaari.com
        Travelyaari.com is one of the good website providing Travel services to book oonline Flight,Hotel,Train and Bus tickets with guranteed lowest prices and provides new deals , offers and discount coupons every week and help you save money upto 20% while you travel.
        travellogos/travelyaari-com-logo-w240.png
    
    
        Redbus.in
        Redbus.com is one of the good website providing Travel services to book oonline Flight,Hotel,Train and Bus tickets with guranteed lowest prices and provides new deals , offers and discount coupons every week and help you save money upto 20% while you travel.
        travellogos/logo_bc9228d_163.jpg
    
    
        Expedia.co.in
        Expedia.co.in is one of the good website providing Travel services to book oonline Flight,Hotel,Train and Bus tickets with guranteed lowest prices and provides new deals , offers and discount coupons every week and help you save money upto 20% while you travel.
        travellogos/expedia-logo.png
    
    
        Other websites
        We Provide more websites that offer good Travel services to book oonline Flight,Hotel,Train and Bus tickets with guranteed lowest prices and provides new deals , offers and discount coupons every week and help you save money upto 20% while you travel.
        travellogos/travel-agency-logos.jpg
    

function travel(){	
	if (window.XMLHttpRequest)
	 {	// code for IE7+, Firefox, Chrome, Opera, Safari
		xmlhttp=new XMLHttpRequest();
	 }
	else
	 {	// code for IE6, IE5
		xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
	 }
		xmlhttp.open("GET","Travel.xml",false);
		xmlhttp.send();
		xmlDoc=xmlhttp.responseXML;		
		travels = xmlDoc.getElementsByTagName("website");
		alert("travels:"+travels.length);
		var websites = [];
		var description = [];
		var logos = [];		
		for(var travel=0;travel	        websitename=travels[travel].getElementsByTagName("sitename")[0].childNodes[0].nodeValue;
		var websites.push(websitename);
		var des=travels[travel].getElementsByTagName("Description")[0].childNodes[0].nodeValue;
		description.push(des);
		var images = travels[travel].getElementsByTagName("Image")[0].childNodes[0].nodeValue;
		logos.push(images);
		}		
		var listview = document.getElementById("container");
		var ul = document.createElement("ul");		
		for(var i=0;i		var livalue= document.createTextNode(websites[i]);
		var desvalue = document.createTextNode(description[i]);		
		var li = document.createElement("li");	
		
		var table = document.createElement("table");
		var table1 = document.createElement("table");
		var tr1 = document.createElement("tr");
		var td1 = document.createElement("td");
		var img = new Image();
		img.src= logos[i];
		img.setAttribute("width",60);
		img.setAttribute("height",30);
		img.setAttribute(onclick, "test()");
		td1.appendChild(img);
		tr1.appendChild(td1);
		var tr2 = document.createElement("tr");
		var td2 = document.createElement("td");
		var td3 = document.createElement("td");
		td2.appendChild(livalue);
		td3.appendChild(desvalue);
		tr1.appendChild(td2);
		tr2.appendChild(td3);
		table.appendChild(tr1);
		table1.appendChild(tr2);
		li.appendChild(table);
		li.appendChild(table1);		
		ul.appendChild(li);
		}		
		listview.appendChild(ul);
		
}