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• Cloud computing - database loading question

  - by workwise

  Following is the situation, I want to know whether what I want is possible in cloud computing and is it the best way for me: 1) My main site has a Database with tables with millions of rows, and entries are added almost every second. 2) I will setup a mysql mirror, so there will be a backup database always in sync with the main one. 3) There are few tens of thousands of images- growing. So say total size of images few tens of gigabytes. I will be keeping the image data also in sync on the backup server. 4) There can be short periods where traffic can go 100X the average traffic. 5) I will be using memcache heavily - most database and even frequently used disk files/images will be in RAM. I want that the main site runs on a dedicated server. The backup server is say an Amazon EC2 instance. Now note that since it is live backup, I need to run a small instance continuously. I want that when I anticipate high traffic, I should be able to run a large instance on the cloud and transfer the traffic there. The main point is - I do not want to spend time in "loading" the database on the large instance, as it typically can take few minutes or even hours (experience). So is it possible to just scale the memory/CPU on demand, and not having to load the database or sync up the filesystem? I want to setup my backup scripts etc just ONCE. Thanks JP

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• Oracle releases ADF Mobile with Java ME CDC for iOS and Android

  - by hinkmond

  Finally. Oracle has released a new product that I've worked on for a while now. Oracle ADF Mobile is available for iOS and Android bringing Java ME CDC technology to iPhones and Android devices all over the world. Woot! Java. On iPhone and Android. Yeah, it's like that. See: Java and HTML5 on SmartPhones Here's a quote: Oracle announced the availability of Oracle ADF Mobile – a framework the enables the development of hybrid applications for mobile devices. Oracle ADF Mobile uses Java and HTML5 and enables developers to develop a single application that installs and runs on both iOS and Android systems. Java - Application logic is developed with the Java language. Oracle brings a lightweight Java VM embedded with each application so you can develop all your business logic in the platform neutral language you know and love! (Yes, even iOS!) Gosh, you'd think it was a big deal. Well, it was! So, go download yours today! Hinkmond

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• Configuration Tips for better Performance with ADF Mobile Apps

  - by SRINI INDLA

  Some tips to keep in mind to make sure ADF Mobile application's performance is optimal: 1. Select release mode in deployment profile. This is perhaps the most important thing to remember to ensure best performance for ADF Mobile Apps. Selecting this option causes the deployer to package optimized JVM and minified JS libs with the mobile app there by significantly improving the over all performance of the application. 2. For iOS you do not need to do anything else other than selecting  release mode in deploy profile. However, on Android you have to create a keystore and configure it in JDev --> Tools --> Preferences --> ADF Mobile --> Platforms : Android as shown in the snapshot below 3. Steps for generating the Keystore for Android using keytool :  4. Logging level setting in logging.properties: Make sure the log level is set to SEVERE for both framework logger as well as the application logger as follows oracle.adfmf.framework.level=SEVERE oracle.adfmf.application.level=SEVERE 5. When using SOAP WebServices with WebService Data Control make sure you select the option to copy the WSDL. This will cause the JDev to download the WSDL and all the XSDs referenced by the WSDL from the server at design time and package them with the application during deployment. This way the application does not incur the cost of downloading these resources at run time from the device.

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• Accessing Secure Web Services from ADF Mobile

  - by Shay Shmeltzer

  Most of the enterprise Web services you'll access are going to be secured - meaning they'll require you to pass a user/password in order to get to their data.  If you never created a secured Web service, it's simple in JDeveloper! For the below video I just right clicked on a Java class that I exposed as a Web service, and chose  "Web Service Properties" and then checked the "oracle/wss_username_token_service_policy" box from the list of options (that's the option supported by ADF Mobile right now): In the demo below we are going to use a "remote" login server that does the authentication of the user/pass.The easiest way to "create" a remote login server is to create a "regular" web ADF application, secure it, and deploy it on a server. The secured ADF application can just require ADF Authentication with a simple HTTP Basic Authentication - basically the next two images in the Application->Secure->Configure ADF Security menu wizard. ok - so now you have a secured ADF application - deploy it on a server and get the URL for that application.  From this point on you'll see the process in the video which deals with the configuration of your ADF Mobile app. First you'll need to enable security for your ADF mobile application, so it will prompt users to provide a user/pass combination. You'll also need to configure security on specific features. And you can have them use remote login pointing to your regular secured ADF application. Next define your Web service data control. Right click on the web service data control to "define Web Service Security". You'll also need to define the adfCredentialStoreKey property for the Web Service data control in the connections.xml file. This should be it. Here is the flow: If you haven't already - you can read more about this in the Mobile developer guide, and Andrejus has a sample for you.

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• What Computing/Programming Qualifications should I aspire for

  - by indevel

  I am a computing science post graduate in my first job from after my degree. During my 12 month review my boss posed the question "What can we do for you in terms of progressing your career?". This got me thinking, after university I hadn't really thought about what other qualifications were available. So this is my question, what courses/qualifications should I be looking to do. Which are highly regarded and which would be really useful to complete. I've searched Google it but all I see is a jumble of courses with no idea of the credibility of each. Any help is much appreciated. I'm traditionally a systems architect, but with this job I've turned to more embedded work so Id like to edge towards electronics, embedded programming, real time OS to help with my work also it would be more likely to be accepted if it was related to my job. Finally UK based courses/ qualifications are a must as travel is probably out of the question. Help me grow as a programmer.

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• Need to determine button clicked in a JQuery mobile popup and perform actions based thereon

  - by Clifford

  I am having a problem with a JQM popup. The popup has 3 buttons, and the action taken in the main program depends on which button is clicked. The code in the main program is run more than once and I am not sure why. The simple example below uses an alert to display which button on the popup was clicked. When the popup is called the first time, it works as hoped, the 2nd time, the alert is displayed twice, the 3rd time, the alert is displayed 3 times, etc. <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="css/jquery.mobile-1.3.2.min.css" /> <script type="text/javascript" charset="utf-8" src="cordova-2.6.0.js"></script> <script type="text/javascript" src="js/jquery-1.9.1.min.js"/></script> <script type="text/javascript" src="js/jquery.mobile-1.3.2.min.js"></script> <script> function doCustomDialog(text1,button1,button2,button3,callback) { $("#customDialog .customDialogDesc").text(text1); $("#customDialog .customDialogOption1").text(button1).on("click.customDialog", function(){ callback("option1"); }); $("#customDialog .customDialogOption2").text(button2).on("click.customDialog", function(){ callback("option2"); }); $("#customDialog .customDialogOption3").text(button3).on("click.customDialog", function(){ callback("option3"); }); $("#customDialog").popup("open"); } </script> </head> <body> <div data-role="page" id="mainPage"> <div data-role="content"> <INPUT type="button" id="confirm" value="Save data" /> <div data-role="popup" id="customDialog" data-title="Are you sure?" class="ui-content"> <p class ="customDialogDesc">???</p> <a href="#" class ="customDialogOption1" data-role="button" data-theme="b" data-rel="back">Yes</a> <a href="#" class ="customDialogOption2" data-role="button" data-theme="b" data-rel="back">No</a> <a href="#" class ="customDialogOption3" data-role="button" data-theme="b" data-rel="back">Cancel</a> </div> </div> </div> <script> $("#mainPage").on("pageshow", function(e) { $("#confirm").click(function() { doCustomDialog("A similar record already exists. Do you want to Update the existing record or Add a new record?", "Update", "Add", "Cancel", function( returned ) { //Do things depending on the button clicked, for now just display which button was clicked alert(returned); }); }); }); </script> </body> </html>

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• Are we ready for the Cloud computing era?

  - by andrewkatumba

  Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;} "Elite?" developer circles are abuzz with the notion of Cloud computing . The increasing bandwidth, the desire for faster and leaner operations and ofcourse the need for outsourcing non core it related business requirements e.g wordprocessing, spreadsheets, data backups. In strolls Chrome OS (am sure other similar OSes will join with their own wagons for us to jump on), offering just that, internet based services(more like a repository of), quick efficient and "reliable" and for the most part cheap and often time even free! And we all go rhapsodic!  It boils down to the age old dilemma, "if the cops are so busy protecting us then who will protect them" (even the folks back at Hollywood keep us reminded)! Who is going to ensure that these internet based services do not go down(either intentionally or by some malicious third party) leading to a multinational colossal disaster .At the risk of sounding pessimistic,  IT IS NOT AN ISSUE OF TRUST, this is but a mere case of Murphy's Law!  What then? Should the "cloud" be trusted to this extent at this time?  This is an era where challenges are rapidly solved with lightning promptness to "beat the competition", my hope is that our solutions are not just creating problems that we may not be able to solve!  Keeping my ear on the Ground.

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• ASP.NET website not working properly in mobile

  - by ria

  I have created a simple app with a page having a server side form, three fields and a button that submits and performs two operations - 1) adds the form fields to the database table 2) sends an email. Now everything works fine on the web browser on my machine but when I access the app through my mobile, the page does not seem to work. the UI and all are set but the button click functionality doesnt seem to be working and also the label which is set after a successful submit is already visible and showing the "thank you" message. Am i doing something wrong here? I have checked the app on Nokia Smartphone browser, android phone, and iphone simulator.

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• Should I use Mutex OR Critical Section for Windows Mobile RIL

  - by afriza

  Hi, I am using a Radio Layer Interface (RIL) Native API in Windows Mobile application. In this API, the return values / results of most functions are not returned immediately but are passed through a callback function which is passed to the RIL API. Some usage examples are found at XDA Develompent Tools and Google Gears Geolocation API. My question is, in these two examples, a mutex is used to guard the data instead of other synchronization objects. Now, will Critical Section do fine here in the use cases described by both examples? Which thread or process will actually call the callback functions?

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• What's the best way to create a Windows Mobile application with multiple screens in C#

  - by Joseph Earl

  I am creating a Windows Mobile Application in C# and Visual Studio 2008. The application will have 5-6 main 'screens'. There will also be bar (/area) with information (e.g. a title, whether the app is busy, etc) above the screens, and a toolbar (or similar control) below the screens with 5-6 buttons (with images) to change the active screen (i.e. the screens will share the top bar and toolbar) What is the best way to implement this? Use multiple forms, and just include the toolbar and top-bar in each Use a single form and something like the Tab control (but customised) to contain the screens Something else? Keeping in mind a) memory usage and b) time to switch screens. Thanks in advance. Any links, pointers etc are much appreciated.

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• Unit testing .Net CF apps on Windows Mobile 6.5.3 in Visual Studio 2008

  - by Johann Gerell

  Did anyone get that to work? I mean, unit testing .Net CF apps on Windows Mobile 6.5.3 in Visual Studio 2008. It works great for a WM 6 Pro target, but not for a WM 6.5.3 target. I get this error: The test adapter ('Microsoft.VisualStudio.TestTools.TestTypes.Unit.UnitTestAdapter, Microsoft.VisualStudio.QualityTools.Tips.UnitTest.Adapter, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a') required to execute this test could not be loaded. Check that the test adapter is installed properly. Not enough storage is available to process this command. Yes, I can read the error text, but I don't understand the failed run. Any clues?

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• Mobile location tracking on Google maps.

  - by Muhammad Umar Siddique

  I need to develop a feature for one of my website by which user can track any mobile number on Google maps just like the link below. Go o the following link and enter the 9810098109 number in textbox to find its location on map. http://wwwa.way2sms.com/jsp/LocateMobile.jsp I want to know either this page is using a third party tool to get the latitude and longitude along with service provider and draw the map accordingly or its some sort of feature provided by Google ? Is there any freeware services to get this done ?

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• Make VS 2008 Auto Deploy SQL Server CE 3.5 When Debugging on Windows Mobile 5.0 Device

  - by INTPnerd

  How do you make VS 2008 automatically install SQL Server CE 3.5 when debugging (F5) a CF app on a windows Mobile 5.0 device? VS used to do this automatically, but now it stopped and I don't know why. I have changed the structure of my solution and the projects, but it is still using SQL Server CE 3.5. It used to also install the Query Analyzer as well which was useful. I frequently uninstall all the programs on the device or do hard reboots so installing this manually is what I am trying to avoid.

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• Enumerating all open file handles and/or registry handles in Windows Mobile / Windows CE 5.x

  - by jdstroy

  Hi all, Is there a way to enumerate all open file handles and/or registry handles in Windows Mobile 5 / Windows CE 5.x? In particular, I'd like to get the handles for all processes in the system, and not just the ones for my application. This would be similar to the list of handles in Sysinternals's Process Explorer for Win32 or Sysinternals's handle.exe I anticipate that someone will ask "Is this absolutely necessary for your application?" My answer to that would be "I think so, unless there's a better way to get a list of all open file names and registry key names." The goal is to provide diagnostic information about an application that crashes and fails to uninstall properly, but that worked properly at one time on the same device. (I do not have debugging information for the buggy application.)

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• Keep Windows Mobile 6 phone alive in C#

  - by QAH

  Hello! I am making an application for Windows Mobile 6.1 Pocket PC (Touchscreen). I know when a Pocket PC's screen turns off, it goes into a standby mode and applications are pretty much halted in the background. My application can't do that. It needs to keep going. So my question is, how can I keep the phone alive (backlight turned on) until my application is done? An example of this would be video streaming applications such as Youtube. It keeps the phone on while the video is playing. Thanks

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• Server Push / HTTP Streaming on Windows Mobile / Windows CE

  - by afriza

  Hi, I find that HTTP Streaming / Server Push is quite promising for my project. Does someone have any clue on how to implement this in Windows Mobile? .NET / Native / other implementations are welcomed. Preferably with permissive license. some links on HTTP Steaming / Server Push: - Push Technology - Streaming HTTP / Server Push - Cross-browser implementation of “HTTP Streaming” (push) AJAX pattern - XEP-0124: Bidirectional-streams Over Synchronous HTTP (BOSH) I was thinking of using some Qt XMPP library (QXmpp) to do the job, but I'm not sure if it's up for the task and I also want to hear some opinions on this.

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• How to use Mobile Browser Definition File for a Phone vs SmartPhone seperation

  - by Denis Hoctor

  Hi all, I'm looking to revamp our mobile site with something simple for phones below the ambiguous smart phone category and something a little more interesting for the phones above this category. I'm not interested in WAP/WML for this project. I'm building a ASP.Net 4 MCV 2 app and using MBDF What I'd like to know is how best to define this differentiation when using MBDF? Screen size, Javascript, SpportsTouchScreen etc. are all in MBDF along with others but I'm not sure where to draw the line and where the data is most accurate for the broad number of devices. What do those of you out there developing for this spread of hardware & software split on? Thanks, Denis P.S. I've done my research on xHTML MP1.0 - 1.2 and the best practises for implementation to ensure broad coverage but I don't want to restrict the newer phones out there to what the base line can see.

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• Embedding IWebbrowser2 ATL interface control in C# windows mobile smart device application

  - by Ramanand Bhat

  Hi All, We have developed an ATL smart device project for to save the web page locally in windows mobile device. The application uses native IWebbrowser2 ATL interface control to browse the web page and save the web page complete. Now we need to have our UI and other user interface controls to be designed and developed using C# also we have some UI module already available in C#. So please provide us a method to embed native IWebbrowser2 ATL interface control to the C# smart device project. your feedback will be greatly appreciated. Thanks, Ramanand Bhat.

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• screen orientation problem in windows mobile application

  - by karim

  some one in tips and tricks say like this plz i cant understand that plz if u could provide saple code for that answer ,i could understand it.actullay iam facing this problem in my application where iam using C#.net,VS 2008,windows mobile 6 professional. they told like this below one If you have to support multiple screen sizes/resolutions, form inheritance is an excellent way to do it. Basically you design your form to fit the standard 320x240 screen. To support a different screen size, you just add a new form, inherit from your custom form (instead of just Form), and then re-arrange the controls as necessary.

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• Syncronizing mobile phone contacts with contacts from social networks

  - by Pentium10

  I retrieve a JSON list of contacts from a social network site. It contains firstname, lastname, displayname, data1, data2, etc... What is the efficient way to quickly lookup my local phone contacts database and "match" them based on their name. Since there are firstname, lastname and displayname this can vary. What do you think, how can the best match be achieved? Also how do I make sure I don't parse for each JSON item the whole database I want to avoide having JSON_COUNT x MOBILE COUNT steps.

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• Windows Mobile camera capture issue with DirectShow

  - by user1112111

  I wrote a C# application that uses DirectShow to allow users to take photos with the camera attached to a Windows Mobile 6 phone. The problem I spotted out is that the preview functionality stops working after a period of not using it. How could I determine what's causing this ? Is there a timeout in Windows registry that tells how much time the camera should stay on ? This is very strange as my code runs perfect when turning on/off the camera quickly enough (i.e. not letting the camera off more than ~15 seconds).

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• Can Windows Mobile Synch Services use a business layer

  - by Andy Kakembo

  We're building a Win Mobile 6 warehouse app which needs to update our server based corporate DB. We've got a C# business layer that sits on our app server and we'd really like our warehouse app to go through this. We also like MS Synch Services. Is there a way to combine the two ie can we use sync services but get them to go through our business layer ? Has anyone done this and got an example I can follow ? Is there a best practice for this kind of scenario ? Thanks, Andy

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• Retrieving Windows Mobile browser history

  - by kurige

  How can I retrieve a list of urls a user has visited on a Windows Mobile phone? I've written a program that successfully retrieves the visited urls in a user's cache, using FindFirstUrlCacheEntry and FindNextUrlCacheEntry - but as I understand it this is not the same as the user's actual web history. In any case it does not seem to give correct results. Edit: I believe the file I'm looking for is index.dat. But it's certainly not in the same place it is on a desktop machine, if it exists at all. And I'm not sure how to parse it. Any experience in this area would be greatly appreciated.

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• Transferring Data Between Server and Client (Mobile)

  - by Byron

  Scenario: Client (Mobile) - .Net CF 2.0, SQL CE 3.0 Server - .Net 2.0, SQL Server 2005, Web Service Client and Server database schemas differ. From server - only certain columns from certain tables need to be synced. From client - everything will need to be synced once client has made changes. Client will continually poll a web service to download and upload data. A framework will be developed to package and unpackage data, used by both client and server. How would you develop the packaging and unpackaging? Use datasets, serialise strongly typed objects? All suggestions welcome. Thanks

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• Performance of DirectX and Recent Windows Mobile Version

  - by Kevin

  I'm seeing very poor performance while using the managed DirectDraw wrappers for WindowsMobile. Microsoft.WindowsMobile.DirectX.Direct3D I would appear the biggest bottle neck is calling Device.Present() after building up the scene. When using the System.Diagnostics.Stopwatch and running this very trivial exmaple Using Sprites on MSDN I'm seeing it's taking approximately 150ms to call the Device.Present() method. I'm seeing this on my AT&T Tilt and on the emulator. In larger applications such as the UltimateGMan sample it's taking over a second to call this method. Does anyone have any experience with using DirectX on mobile devices? What am I missing? I would prefer to stay in the managed world but if I drop back into C++ would I see better performance?

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