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• How the dispose() method works in C#.net?

  - by Shailesh Jaiswal

  I am developing smart device application in C#. It is a window application. In that application I have created the 4 to 5 window form. I am navigating in these forms from one form to another form by using linklabel control in C#. In linklabel_Click() method which I am using to navigate I am using the code form1.show() according to need. I read that form1.show() method automatically calls the form1.dispose() method on the from1. I also read that once we dispose the form it is removed from memory & we can not call it again. But in my application no one form gets disposed. I can see all the form even after calling the form1.show() method. when I use the link to go once again to from1 it does not get disposed. Is anything wrong in my concept? I am new in C#. Please tell me how the dispose method work in above context? What is the use of dispose method. It will be better if you describe me above issue with example.

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• Languages for implementing decision trees

  - by Shailesh Tainwala

  What would be a good choice of programming language in which to implement a decision tree? The results of the implementation will be for personal use only, so no need to consider ability to publish etc. I have heard that Octave is a good option, can anyone explain why a matrix based language is recommended for implementing decision trees?

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• Are raw C++ pointers first class objects?

  - by Shailesh Kumar

  According to Wikipedia: An object is first-class when it: can be stored in variables and data structures can be passed as a parameter to a subroutine can be returned as the result of a subroutine can be constructed at runtime has intrinsic identity (independent of any given name) Somebody had once told me that raw pointers are not first class objects while smart pointers like std::auto_ptr are. But to me, a raw pointer (to an object or to a function) in C++ does seem to me to satisfy the conditions stated above to qualify as a first class object. Am I missing something?

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• Nested CheckBox in Java

  - by Shailesh Ahuja

  I want to create a nested checkbox list. If the user checks the main item, all the sub-items under and get checked. If the user checks some of the sub-items, then a blue square appears inside the main items checkbox. It should look something like this. How do I do that in Java 1.6? Can I use swing or any external library? I would like to choose the easiest and the fastest way to achieve this? My aim is to create only 1 level of nesting.

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• Cell Dequeue problem when table inside another table's cell content view

  - by Shailesh Kanzariya

  I am using two table views (Main Table and Sub Table), one table inside other's cell. I am adding Sub Table in Main Table's cell content view. I am also using different Cell Identifier for both table cells. Now, issue is : When - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath is called, very first time cell of Main Table is generated and when I scroll up/down they all are just dequeued, so it is expected and standard behavior and working fine. But, cell of Sub Table is getting created/allocated every time. It is not dequeued as it should be. I guess, its happening because Sub Table is part of Main Table's Cell Content view. But not sure and don't know how to resolve it. Can somebody help me to find the solution?

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• To display the images in mobile devices is it necessary that the images should resides on device in

  - by Shailesh Jaiswal

  I am devloping smart device application in C#. In this application I have some images in my application which I used to dispay on emulator from my application. To display the images on emulator I need to create the one folder of images which resides on the emulator. Only after that I am able to display the images in emulator. I am able to create the folder in emulator by using File-Configure-General-Shared Folder. For sharing the folder I am giving the path of the folder which contains the images. Once I share the folder the folder of images which resides in my application will get copied in emulator with the name "Storage Card". Now I need to use the path as Bitmap bmp=new Bitmap(@"/Storage Card/ImageName.jpg"); Now I am able to display the images in emulator. Can we display the images in the emulator without any image folder which resides on emultor (so that we dont need to place the image folder in emulator as in the above case by sharing the folder) ? If the answere is no then to run the application on different mobile devices we need to place the folder which contains the images on different mobile devices. Isnt it? If the answere is yes then how we can display the images on different mobile device from our application without placing any folder of images on mobile devices?

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• SHFileOperation FO_MOVE deletes a file if the destination drive is full

  - by Shailesh Kumar

  I had a piece of code which uses windows SHFileOperation function with FO_MOVE operation. Additional flags specified were FOF_NOCONFIRMATION | FOF_NOERRORUI | FOF_SILENT. A particular weird behavior was observed when the destination drive was full. In this case, MOVE could not place the file in destination folder but the source file was also lost. This was highly unexpected and this caused a loss of data. Is this the standard behavior of SHFileOperation? Can we have something like MOVE if the destination drive has space otherwise leave the file at the original place?

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• What is the difference between a module and a script in Python?

  - by Shailesh Tainwala

  Think the title summarizes the question :-)

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• Mapping integers to types using C++ template fails in a specific case

  - by Shailesh Kumar

  I am attempting to compile the following template based code in VC++ 2005. #include <iostream> using namespace std; /* * T is a template which maps an integer to a specific type. * The mapping happens through partial template specialization. * In the following T<1> is mapped to char, T<2> is mapped to long * and T<3> is mapped to float using partial template specializations */ template <int x> struct T { public: }; template<> struct T<1> { public: typedef char xType; }; template<> struct T<2> { public: typedef long xType; }; template<> struct T<3> { public: typedef float xType; }; // We can easily access the specific xType for a specific T<N> typedef T<3>::xType x3Type; /*! * In the following we are attempting to use T<N> inside another * template class T2<R> */ template<int r> struct T2 { //We can map T<r> to some other type T3 typedef T<r> T3; // The following line fails typedef T3::xType xType; }; int main() { T<1>::xType a1; cout << typeid(a1).name() << endl; T<2>::xType a2; cout << typeid(a2).name() << endl; T<3>::xType a3; cout << typeid(a3).name() << endl; return 0; } There is a particular line in the code which doesn't compile: typedef T3::xType xType; If I remove this line, compilation goes fine and the result is: char long float If I retain this line, compilation errors are observed. main.cpp(53) : warning C4346: 'T<x>::xType' : dependent name is not a type prefix with 'typename' to indicate a type main.cpp(54) : see reference to class template instantiation 'T2<r>' being compiled main.cpp(53) : error C2146: syntax error : missing ';' before identifier 'xType' main.cpp(53) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int I am not able to figure out how to make sure that T::xType can be treated as a type inside the T2 template. Any help is highly appreciated.

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• How well do you need to know HTML before delving into CSS?

  - by Shailesh Tainwala

  Is knowledge of HTML beyond the basics a prerequisite for learning CSS? I am making a learning plan so this will help me evaluate the time required better.

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• what is the basic role of Ienumerable object in .net?

  - by Shailesh Jaiswal

  I dont know anything about Ienumerable object.what is the role of Ienumarble interface in .net ? Please tell me whether it is in built? Is every class in .net automatically implements the Ienumarable interface ? why there is need to implement the ienumerable interface? what are the methods it contains & what roles they plays. Please explain in detail.

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• New Technical Articles on SOA, Mobile, IDM, WebLogic, Coherence

  - by OTN ArchBeat

  For your reading pleasure... In October the following items of techie goodness from members of the architect community were added to the ever-growing library of OTN technical articles. SOA in Real Life: Mobile Solutions by Jürgen Kress, Berthold Maier, Hajo Normann, Danilo Schmeidel, Guido Schmutz, Bernd Trops, Clemens Utschig-Utschig, Torsten Winterberg Consumers are no longer content to be chained to a desktop or laptop computer. This article, teh ninth chapter in the Industrial SOA series, describes ways companies can take SOA to go. [More SOA Articles] SOA and User Interfaces by Juergen Kress, Hajo Normann, Danilo Schmiedel, Guido Schmutz, Clemens Utschig-Utschig, Torsten Winterberg, and Bernd Trops The eighth chapter in the Industrial SOA series addresses the challenges of developing user interfaces in a service oriented architecture, and describes a practical application of Thomas Erl's UI Mediator pattern.[More SOA Articles] Enterprise Grade Deployment Considerations for Oracle Identity Manager AD Connector by Firdaus Fraz Oracle Fusion Middleware solution architect Firdaus Fraz illustrates provides best practice recommendations for setting up an enterprise deployment environment for the OIM connector for Microsoft Active Directory. [More Identity Management Articles] Coherence*Web: Sharing an httpSession Among Applications in Different Oracle WebLogic Clusters by Jordi Villena SOA solution architect Jordi Villena shows how easy it is to extend Coherence*Web to enable session sharing. [More SOA Articles] Multi-Factor Authentication in Oracle WebLogic by Shailesh K. Mishra Using multi-factor authentication to protect web applications deployed on Oracle WebLogic.[More Identity Management Articles] You'll find many more articles on many more topics here.

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• ArchBeat Link-o-Rama for 11/16/2011

  - by Bob Rhubart

  Size, Failure, and Optimization | Roger Sessions The slide deck from Roger Sessions' keynote address at the 2nd IT Architect Regional Conference in Bogota, Colombia. Webcast: Oracle Business Intelligence Mobile Event Date: Tuesday, November 29, 2011 Time: 9 a.m. PT/12 noon ET Featuring Manan Goel (Director BI Product Marketing, Oracle) and Shailesh Shedge (Director BI & Analytics Practice, Ascentt). Live Webinar: Solutions for MySQL High Availability (November 29) Tune into this webcast to learn how MySQL’s High Availability solution can help you minimize downtime and ensure business continuity. Domain-Driven Design: Useful Models for Complex Problems | @ericevans0 Domain-Driven Design: Useful Models for Complex Problems | Eric Evans Eric Evans' slide deck from the recent IASA event in Spain. Oracle Hardware goes social Introducing the Oracle Hardware Social Media Hub -- The new Facebook meeting place for the global hardware community. The hub now features a pioneering Q&A app called Oracle Ask the Expert, where you can ask questions and engage with Oracle experts. Review: WebLogic Server 11g Administration Handbook by S. Alapati Dr. Frank Munz, author of "Middleware and Cloud Computing, reviews the new WebLogic book by Sam Alapati and offers a quick overview of a couple of other new titles. SOA All the Time; Architects in AZ; Clearing Info Integration hurdles This week on the Architect Home Page on OTN.

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• ArchBeat Link-o-Rama for 2012-03-21

  - by Bob Rhubart

  Webcast: Simplify Oracle RAC Deployment with Oracle VM event.on24.com Tuesday March 20, 2012 - 9am PT / Noon ET Learn how you can: Deploy an Oracle (RAC) Database environment in minutes with Oracle VM templates Create, deploy or convert existing systems into highly available cluster environments Instantly respond to changing demand by relocating resources between servers Speakers: Ronen Kofman – Product Management Director, Oracle Markus Michalewicz – Senior Principal Product Manager, Oracle Webcast: Oracle Business Intelligence Mobile event.on24.com Event Date: Wednesday, March 28, 2012 Time: 10 a.m. PT / 1 p.m. ET Speakers: Pete Manhardt – Director Enterprise Information at Smiths Group, plc Shailesh Shedge – Director BI & Analytics Practice at Ascentt Manan Goel – Director BI Product Marketing at Oracle Seth's Blog: The extraordinary software development manager sethgodin.typepad.com "Being good at programming is insufficient qualification for becoming a world class software project manager/leader," says marketing guru Seth Godin. Mismatch: Developer skills and customer demands | Floyd Teter orclville.blogspot.com "Those of us in the developer community may need to reconsider the law of supply and demand," says Oracle ACE Director Floyd Teter, "and get on with the process of matching our skills to the demands of our customers." SOA gets mobilized; mobile gets SOA-ized: survey | Joe McKendrick www.zdnet.com "Maybe mobile is the killer app for SOA that actually will convince people to adopt the architectural style." Integrating with Oracle Fusion Applications: Discovering Integration Artifacts | Rajesh Raheja rraheja.wordpress.com Rajesh Raheja briefly discusses "the ease with which integrations are now possible using standards-based technologies with enterprise applications." Chargeback and showChargeback and showback...both a 'throw back' | Tom Laszewski blogs.oracle.com Tom Laszeski discusses strategies for tracking and applying the costs of "IT services, hardware or software to the business unit in which they are used." GlassFish 4.0 Virtualization Progress - VirtualBox | The Aquarium blogs.oracle.com Want to spawn GlassFish instances as VirtualBox virtual machines? The Aquarium shares resources that will help you get it done. Thought for the Day "Spring is the time of plans and projects." — Leo Tolstoy

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• Best of OTN - Week of November 4th

  - by CassandraClark-OTN

  It was another exciting week at OTN!  Lots of GREAT content to share.  If you had a favorite that you don't see listed let us know in the comment section below.  Java Community - JavaOne Sessions Online - We've posted 60 of the JavaOne sessions online, and we'll be rolling out more sessions every few weeks. This content is free, courtesy of Oracle.NetBeans 7.4 Released  - NetBeans 7.4 features HTML5 integration for Java EE and PHP development; support for Apache Cordova and JDK 8 preview features; enhancements to Maven, C/C++, and more.vJUG: Worldwide Virtual JUG Created - London Java Community leader and technical evangelist Simon Maple has created a Meetup called vJUG, with aim toward connecting Java Developers in the virtual world.Tori Wieldt, Java Community Manager Friday Funny: This is what REALLY happens when you give someone your business card ow.ly/q6aKUArchitect Community - Don't forget to register for the free Virtual Developer Day - Harnessing the Power of Oracle WebLogic and Oracle Coherence.  December 3rd, 2013 - Two great tracks, Design & Develop and Build, Deploy & Manage.   Why wait, register now!  Multi-Factor Authentication in Oracle WebLogic - Shailesh K. Mishra - Really good technical article on using multi-factor authentication to protect web applications deployed on Oracle WebLogic.Coherence*Web: Sharing an httpSessions Among Applications in Different Oracle WebLogic Clusters - Jordi VillenaUnderstanding when and how to select session attributes that must be stored in the local storage of the Oracle WebLogic instances and which should be leveraged to an Oracle Coherence distributed cache.  Bob Rhubart, Architect Community Manager Friday Funny - "Be yourself, everyone else is already taken." Oscar Wilde (October 16, 1854 - November 30, 1900) Irish writer and poet.

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• ArchBeat Link-o-Rama for 11/17/2011

  - by Bob Rhubart

  Building an Infrastructure Cloud with Oracle VM for x86 + Enterprise Manager 12c | Richard Rotter Richard Rotter demonstrates "how easy it could be to build a cloud infrastructure with Oracle's solution for cloud computing." Article: Social + Lean = Agile | Dave Duggal In today’s increasingly dynamic business environment, organizations must continuously adapt to survive. Change management has become a major bottleneck. Organizations’ need a practical mechanism for managing controlled variance and change in-flight to break the logjam. This paper provides a foundation for applying lean and agile principles to achieve Enterprise Agility through social collaboration. Stress Testing Java EE 6 Applications - Free Article In Free Java Magazine : Adam Bien "It is strange," says Adam Bien, "everyone is obsessed about green bars and code coverage, but testing of multi threaded behavior is widely ignored - until the applications run into massive problems." Using Access Manager to Secure Applications Deployed on WebLogic | Rene van Wijk Another great how-to post from Oracle ACE Rene van Wijk, this time involving JBoss RichFaces, Facelets, Oracle Coherence, and Oracle WebLogic Server. DOAG 2011 vs. Devoxx - Value and Attraction | Markus Eisele Oracle ACE Director Markus Eisele compares and contrasts these popular conferences with the aim of helping others decide which to attend. SOA All the Time; Architects in AZ; Clearing Info Integration hurdles SOA all the Time; Architects in AZ; Clearing Info Integration Hurdles This week on the Architect Home Page on OTN. Webcast: Oracle Business Intelligence Mobile Event Date: Wednesday, December 7, 2011 Time: 10 a.m. PT/1 p.m. ET Featuring Manan Goel (Director BI Product Marketing, Oracle) and Shailesh Shedge (Director BI and Analytics Practice, Ascentt). Webcast: Maximum Availability on Private Clouds A discussion of Oracle’s Maximum Availability Architecture, Oracle Database 11g, Oracle Exadata Database Machine, and Oracle Database appliance, featuring Margaret Hamburger (Director, Product Marketing, Oracle) and Joe Meeks (Director, Product Management, Oracle). November 30, 2011 at 10:00am PT / 1:00pm ET. Oracle Technology Network Architect Day - Phoenix, AZ Wednesday December 14, 2011, 8:30am - 5:00pm. The Ritz-Carlton, Phoenix, 2401 East Camelback Road, Phoenix, AZ 85016. Registration is free, but seating is limited.

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