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  • Talking JavaOne with Rock Star Raghavan Srinivas

    - by Janice J. Heiss
    Raghavan Srinivas, affectionately known as “Rags,” is a two-time JavaOne Rock Star (from 2005 and 2011) who, as a Developer Advocate at Couchbase, gets his hands dirty with emerging technology directions and trends. His general focus is on distributed systems, with a specialization in cloud computing. He worked on Hadoop and HBase during its early stages, has spoken at conferences world-wide on a variety of technical topics, conducted and organized Hands-on Labs and taught graduate classes.He has 20 years of hands-on software development and over 10 years of architecture and technology evangelism experience and has worked for Digital Equipment Corporation, Sun Microsystems, Intuit and Accenture. He has evangelized and influenced the architecture of numerous technologies including the early releases of JavaFX, Java, Java EE, Java and XML, Java ME, AJAX and Web 2.0, and Java Security.Rags will be giving these sessions at JavaOne 2012: CON3570 -- Autosharding Enterprise to Social Gaming Applications with NoSQL and Couchbase CON3257 -- Script Bowl 2012: The Battle of the JVM-Based Languages (with Guillaume Laforge, Aaron Bedra, Dick Wall, and Dr Nic Williams) Rags emphasized the importance of the Cloud: “The Cloud and the Big Data are popular technologies not merely because they are trendy, but, largely due to the fact that it's possible to do massive data mining and use that information for business advantage,” he explained. I asked him what we should know about Hadoop. “Hadoop,” he remarked, “is mainly about using commodity hardware and achieving unprecedented scalability. At the heart of all this is the Java Virtual Machine which is running on each of these nodes. The vision of taking the processing to where the data resides is made possible by Java and Hadoop.” And the most exciting thing happening in the world of Java today? “I read recently that Java projects on github.com are just off the charts when compared to other projects. It's exciting to realize the robust growth of Java and the degree of collaboration amongst Java programmers.” He encourages Java developers to take advantage of Java 7 for Mac OS X which is now available for download. At the same time, he also encourages us to read the caveats.

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  • Do Repeat Yourself in Unit Tests

    - by João Angelo
    Don’t get me wrong I’m a big supporter of the DRY (Don’t Repeat Yourself) Principle except however when it comes to unit tests. Why? Well, in my opinion a unit test should be a self-contained group of actions with the intent to test a very specific piece of code and should not depend on externals shared with other unit tests. In a typical unit test we can divide its code in two major groups: Preparation of preconditions for the code under test; Invocation of the code under test. It’s in the first group that you are tempted to refactor common code in several unit tests into helper methods that can then be called in each one of them. Another way to not duplicate code is to use the built-in infrastructure of some unit test frameworks such as SetUp/TearDown methods that automatically run before and after each unit test. I must admit that in the past I was guilty of both charges but what at first seemed a good idea since I was removing code duplication turnout to offer no added value and even complicate the process when a given test fails. We love unit tests because of their rapid feedback when something goes wrong. However, this feedback requires most of the times reading the code for the failed test. Given this, what do you prefer? To read a single method or wander through several methods like SetUp/TearDown and private common methods. I say it again, do repeat yourself in unit tests. It may feel wrong at first but I bet you won’t regret it later.

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  • Average SPA weight [on hold]

    - by Emmanuel Istace
    First, sorry my noobs questions, but I'm mainly Windows Developer and not Web Developer :) I'm developing a single page application with a lot of css & javascript. For now the page is 1.3Mo composed by 5 section. Here are the rounded stats : Document : 10kb Style : 60kb Images : 450 kb (already compressed, include a big gallery thumbnails) Javascript : 700kb - 600kb of "framework" (jquery, jquery-ui, boostrap, modernizer, waypoint, ...) and 100kb of custom js. Fonts : 125kb And the site is not finished yet. (Will include gmap api, and some others...) My questions are : Do you have any statistics about the average weight of an SPA ? As this is the whole website, do you think it's acceptable ? Is lazy load (for images) a solution ? What will be impact for SEO ? Is the "200kb rule" of google still relevant ? Do you know great tools to detect which javascript code is not used during the the exection of a page and then the availability to optimize these 700kb of framework js stuffs ? Can a caching strategy be an answer ? Thank you in advance for you help ! Best regards

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  • Oracle ACEs in the House

    - by Justin Kestelyn
    As is customary, the Oracle ACEs have invaded the Oracle Develop Conference agenda.Why? Because Oracle ACE-dom inherently is a stamp of not only expertise, but a unique ability to make that expertise useful to others. Plus, they're a group of "fine blokes" (UK. subjects, educate me: is that really a word?)Perhaps if you're not able to catch one of these sessions, you will be able to see the applicable ACE in action elsewhere, at a conference or user group meeting near you. Session ID Session Title Speaker, Company S313355 Developing Large Oracle Application Development Framework 11g Applications Andrejus Baranovskis, Red Samurai Consulting S316641 Xenogenetics for PL/SQL: Infusing with Java Best Practices and Design Patterns Lucas Jellema, AMIS; Alex Nuijten, AMIS S317171 Building Secure Multimedia Web Applications: Tips and Techniques Marcel Kratochvil, Piction; Melliyal Annamalai, Oracle S315660 Database Applications Lifecycle Management Marcelo Ochoa, Facultad de Ciencias Exactas S315689 Building a High-Performance, Low-Bandwidth Web Architecture Paul Dorsey, Dulcian, Inc. S316003 Managing the Earthquake: Surviving Major Database Architecture Changes Paul Dorsey, Dulcian, Inc.; Michael Rosenblum, Dulcian, Inc. S314869 Introduction to Java: PL/SQL Developers Take Heart Peter Koletzke, Quovera S316184 Deploying Applications to Oracle WebLogic Server Using Oracle JDeveloper Peter Koletzke, Quovera; Duncan Mills, Oracle S316597 Using Collections in Oracle Application Express: The Definitive Intro Raj Mattamal, Niantic Systems, LLC S313382 Using Oracle Database 11g Release 2 in an Oracle Application Express Environment Roel Hartman, Logica S313757 Debugging with Oracle Application Express and Oracle SQL Developer Dimitri Gielis, Sumneva S313759 Using Oracle Application Express in Big Projects with Many Developers Dimitri Gielis, Sumneva S313982 Forms2Future: The Ongoing Journey into the Future for Oracle-Based Organizations Lucas Jellema, AMIS; Peter Ebell, AMIS

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  • JDeveloper and ADF at UKOUG

    - by Grant Ronald
    This year, Oracle ADF and JDeveloper has a big showing at the UKOUG (about 22 hours worth!!)- Europe's largest Oracle User Group.  There are three days packed with awesome ADF content delivered by some of the leading lights in ADF Developement including Duncan Mills, Frank Nimphius, Shay Shmeltzer, Susan Duncan, Lucas Jellema, Steven Davelaar, Sten Vesterli (and I'll be there as well!). Please make sure you refer to the official agenda for timings but an outline is here (if you think there are any sessions I have missed let me know and I will add them) Monday 10:00 - 10:45 - Deepdive into logical and physical data modeling with JDeveloper 10:00 - 12:15 - Debugging ADF Applications 12:15 - 13:15 - Learn ADF Task Flows in 60 Minutes 14:30 - 15:15 - ADF's Hidden Gem - the Groovy scripting language in Oracle ADF 15:25 - 16:10 - ADF Patterns for Forms Conversions 16:35 - 17:35 - Dummies Guide to Oracle ADF 16:35 - 17:35 - ADF Security Overview - Strategies and Best Practices 17:45 - 18:30 - A Methodology for Enterprise Applications with Oracle ADF Tuesday 09:00 - 10:00 - Real World Performance Tuning for Oracle ADF 11:15 - 12:15 - Keynote: Modern Development, Mobility and Rich Internet Applications 11:15 - 12:15 - Migration to Fusion Middleware 11g: Real world cases of Forms, ADF and Identity Management upgrades 14:40 - 15:20 - What's new in JDeveloper 11gR2 14:40 - 15:20 - Development Tools Roundtable 15:35 - 16:20 - ALM in Jdeveloper is exciting! 16:40 - 17:40 - Moving Oracle Forms to Oracle ADF: Case Studies Wednesday 09:00 - 10:00 - Building a Multi-Tasking ADF Application with Dynamic Regions and Dynamic Tabs 10:10 - 10:55 - Building Highly Reusable ADF Taskflows 12:30 - 13:30 - Design Patterns, Customization and Extensibility of Fusion Applications 14:25 - 15:10 - Continuous Integration with Hudson: What a year! 14:00 - 17:00 - Wednesday Wizardry with Fusion Middleware - Live application development demonstration with ADF, SOA Suite 15:20 - 16:05 - Adding Mobile and Web 2.0 UIs to Existing Applications - The Fusion Way  16:15 - 17:00 - Leveraging ADF for Building Complex Custom Applications

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  • Where do I place XNA content pipeline references?

    - by Zabby Wabby
    I am relatively new to XNA, and have started to delve into the use of the content pipeline. I have already figured out that tricky issue of adding a game library containing classes for any type of .xml file I want to read. Here's the issue. I am trying to handle the reading of all XML content through use of an XMLHandler object that uses the intermediate deserializer. Any time reading of such data is required, the appropriate method within this object would be called. So, as a simple example, something like this would occur when a character levels: public Spell LevelUp(int levelAchived) { XMLHandler.FindSkillsForLevel(levelAchived); } This method would then read the proper .xml file, sending back the spell for the character to learn. However, the XMLHandler is having issues even being created. I cannot get it to use the using namespace of Microsoft.Xna.Framework.Content.Pipeline. I get an error on my using statement in the XMLHandler class: using Microsoft.Xna.Framework.Content.Pipeline.Serialization.Intermediate; The error is a typical reference error: Type or namespace name "'Pipeline' does not exist in the namespace 'Microsoft.Xna.Framework.Content' (are you missing an assembly reference?)" I THINK this is because this namespace is already referenced in my game's content. I would really have no issue placing this object within my game's content (since that is ALL it deals with anyways), but the Content project does not seem capable of holding anything but content files. In summary, I need to use the Intermediate Deserializer in my main project's logic, but, as far as I can make out, I can't safely reference the associated namespace for it outside of the game's content. I'm not a terribly well-versed programmer, so I may be just missing some big detail I've never learned here. How can I make this object accessible for all projects within the solution? I will gladly post more information if needed!

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  • Call for Customer Examples and Stories--PeopleTools 8.50

    - by PeopleTools Strategy Team
    PeopleTools 8.50 was a big release for us, and one that we think will provide a lot of value for customers. We've been having some interesting conversations with customers about this release at conferences, advisory board meetings, and technical group meetings. However, we would like to solicit some examples and success stories from you, our broad customer base. Do you have some examples of how you are using PeopleTools 8.50 and Enterprise Portal 9.1 that you would be willing to share? We would like to see some screen shots and perhaps a short blurb describing how you are using the Tools and Portal features, as well as any benefits accrued. Do you have a compelling success story? We are particularly interested in hearing about quantifiable improvements in user productivity, performance, cost savings, etc. You should be aware that these screen shots and stories will be public, and could appear in a conference presentation at some point. You will not be asked to serve as a formal reference, however. If you have some stories and examples you'd be willing share with us, please send them to this email address for the PeopleTools team: [email protected]

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  • Architect Day Artifacts

    - by Bob Rhubart
    In the last eight days the Oracle Technology Network Architect Day tour has stopped in Dallas, Anaheim (Disneyland, to be precise) , and at Oracle HQ in Redwood Shores,  CA. I was on-scene for the Dallas event, where I pulled a TMZ-style ambush on Chris Benedict from the Oracle Enterprise Solutions Group to capture this short video.     The other presenters escaped. But the slide decks from several of the presentations are now available on Slideshare:  IT Optimization: Reduce Data Center Costs and Set the Foundation for Future Growth as presented by Alan Levine, Oracle Enterprise Architect Senior Director Implementing Applications with SOA and Application Integration Architecture as presented by Vish Gaitonde, Director, Ecosystem Strategy, Application Integration Architecture Application Grid: Platform for Virtualization and Consolidation of Your Java Applications as presented by Sam Shah, Director, SOA and Integration, Oracle Enterprise Solutions Group Infrastructure Consolidation and Virtualization as presented by Steve Bennett, also a Director with the Oracle Enterprise Solutions Group Security in a Cloudy Architecture as presented by Geri Born, Security Specialist with the Oracle Enterprise Solutions Group I'll post more Architect Day presentations as soon as I track them down. A special thank you to Oracle ACE Directors Jordan Braunstein, Billy Tong, and Kai Yu, who were on hand in Dallas, and to fellow ACE Directors Basheer Khan and Floyd Teter for their participation in the Anaheim event.  (Floyd and his iPad came through again, allowing me to record the Anaheim panel discussion via Skype while sitting in my home office in Cleveland.) That audio, as well as audio from the panel discussion and a roundtable from the Dallas event, will be available soon as ArchBeat podcast programs. If you attended one of these events, a big thanks. Your active participation, your questions and input, are what these events are all about.  As new cities are added to the tour, we expect more of the same from the OTN architect community. And did I mention that the food is free? So stay tuned... del.icio.us Tags: oracle,otn,enterprise architecture,enterprise architect,archbeat,arch2arch,architect day Technorati Tags: oracle,otn,enterprise architecture,enterprise architect,archbeat,arch2arch,architect day   Cross-posted to the ArchBeat blog

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  • Architect Day Artifacts

    - by Bob Rhubart
    In the last eight days the Oracle Technology Network Architect Day tour has stopped in Dallas,  Anaheim (Disneyland, to be precise) , and at Oracle HQ in Redwood Shores,  CA. I was on-scene for the Dallas event, where I pulled a TMZ-style ambush on Chris Benedict from the Oracle Enterprise Solutions Group to capture this short video.     The other presenters escaped. But the slide decks from several of the presentations are now available on Slideshare:  IT Optimization: Reduce Data Center Costs and Set the Foundation for Future Growth as presented by Alan Levine, Oracle Enterprise Architect Senior Director Implementing Applications with SOA and Application Integration Architecture as presented by Vish Gaitonde, Director, Ecosystem Strategy, Application Integration Architecture Application Grid: Platform for Virtualization and Consolidation of Your Java Applications as presented by Sam Shah, Director, SOA and Integration, Oracle Enterprise Solutions Group Infrastructure Consolidation and Virtualization as presented by Steve Bennett, also a Director with the Oracle Enterprise Solutions Group Security in a Cloudy Architecture as presented by Geri Born, Security Specialist with the Oracle Enterprise Solutions Group I’ll post more Architect Day presentations as soon as I track them down. A special thank you to Oracle ACE Directors Jordan Braunstein, Billy Tong, and Kai Yu, who were on hand in Dallas, and to fellow ACE Directors Basheer Khan and Floyd Teter for their participation in the Anaheim event.  (Floyd and his iPad came through again, allowing me to record the Anaheim panel discussion via Skype while sitting in my home office in Cleveland.) That audio, as well as audio from the panel discussion and a roundtable from the Dallas event, will be available soon as ArchBeat podcast programs. If you attended one of these events, a big thanks. Your active participation, your questions and input, are what these events are all about.  As new cities are added to the tour, we expect more of the same from the OTN architect community. And did I mention that the food is free? So stay tuned… del.icio.us Tags: oracle,otn,enterprise architecture,enterprise architect,archbeat,arch2arch,architect day Technorati Tags: oracle,otn,enterprise architecture,enterprise architect,archbeat,arch2arch,architect day   Cross-posted to the Oracle Technology Network Blog

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  • Do you think that exposure to BASIC can mutilate your mind? [closed]

    - by bigown
    It is practically impossible to teach good programming to students that have had a prior exposure to BASIC: as potential programmers they are mentally mutilated beyond hope of regeneration -- Edsger W. Dijkstra I have deep respect to Dijkstra but I don't agree with everything he said/wrote. I disagree specially with this quote on linked paper wrote 35 years ago about the Dartmouth BASIC implementation. Many of my coworkers or friends programmers started with BASIC, questions below have answers that indicate many programmers had their first experience on programming at BASIC. AFAIK many good programmers started at BASIC programming. I'm not talking about Visual Basic or other "modern" dialects of BASIC running on machines full of resources. I'm talking about old times BASIC running on "toy" computer, that the programmer had to worry about saving small numbers that need not be calculated as a string to save a measly byte because the computer had only a few hundreds of them, or have to use computed goto for lack of a more powerful feature, and many other things which require the programmer to think much before doing something and forcing the programmer to be creative. If you had experience with old time BASIC on a machine with limited resources (have in mind that a simple micro-controller today has much more resources than a computer in 1975, do you think that BASIC help your mind to find better solutions, to think like an engineer or BASIC drag you to dark side of programming and mutilated you mentally? Is good to learn a programming language running on a computer full of resources where the novice programmer can do all wrong and the program runs without big problems? Or is it better to learn where the programmer can't go wrong? What can you say about the BASIC have helped you to be a better/worse programmer? Would you teach old BASIC running on a 2KB (virtual) machine to a coming programmer? Sure, only exposure to BASIC is bad. Maybe you share my opinion that modern BASIC doesn't help too much because modern BASIC, as long other programming languages, gives facilities which allow the programmer doesn't think deeper. Additional information: Why BASIC?

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  • Why is TDD not working here?

    - by TobiMcNamobi
    I want to write a class A that has a method calculate(<params>). That method should calculate a value using database data. So I wrote a class Test_A for unit testing (TDD). The database access is done using another class which I have mocked with a class, let's call it Accessor_Mockup. Now, the TDD cycle requires me to add a test that fails and make the simplest changes to A so that the test passes. So I add data to Accessor_Mockup and call A.calculate with appropriate parameters. But why should A use the accessor class at all? It would be simpler (!) if the class just "knows" the values it could retrieve from the database. For every test I write I could introduce such a new value (or an if-branch or whatever). But wait ... TDD is more. There is the refactoring part. But that sounds to me like "OK, I can do this all with a big if-elseif construct. I could refactor it using a new class ... but instead I make use of the DB accessor and do this in a totally different way. The code will not necessarily look better afterwards but I know I WANT to use the database".

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  • Everythings changes, except that it doesn&rsquo;t

    - by Dennis Vroegop
    You may have noticed this. Microsoft launched a new product this week. Well, launched is a strong word, they announced it. They call it.. The Surface! What is it? Well, it’s a cool looking family of tablets designed for Windows 8. And I have to say: they look stunning and I can’t wait to have one. There’s just one thing.. The name..Where have I heard that before? Why, indeed! Yes, it is also the name of a new paradigm in computing: Surface Computing. You may have read something about that, here on this blog for instance. Well, in order to prevent confusion they have decided to rename Surface to Pixelsense. You know, the technology that drives the ‘camera’ inside the Samsung SUR40 for Microsoft Surface…. So now, when we talk about Surface, we mean the new tablet. When we talk about Pixelsense we mean that big table… So there you have it… Welcome PixelSense! For more info see http://www.surface.com for the tablet and http://www.pixelsense.com for Pixelsense.

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  • Webinar: NoSQL - Data Center Centric Application Enablement

    - by Charles Lamb
    NoSQL - Data Center Centric Application Enablement AUGUST 6 WEBINAR About the Webinar The growth of Datacenter infrastructure is trending out of bounds, along with the pace in user activity and data generation in this digital era. However, the nature of the typical application deployment within the data center is changing to accommodate new business needs. Those changes introduce complexities in application deployment architecture and design, which cascade into requirements for a new generation of database technology (NoSQL) destined to ease that complexity. This webcast will discuss the modern data centers data centric application, the complexities that must be dealt with and common architectures found to describe and prescribe new data center aware services. Well look at the practical issues in implementation and overview current state of art in NoSQL database technology solving the problems of data center awareness in application development. REGISTER NOW>> MORE INFORMATION >> NOTE! All attendees will be entered to win a guest pass to the NoSQL Now! 2013 Conference & Expo. About the Speaker Robert Greene, Oracle NoSQL Product Management Robert GreeneRobert Greene is a principle product manager / strategist for Oracle’s NoSQL Database technology. Prior to Oracle he was the V.P. Technology for a NoSQL Database company, Versant Corporation, where he set the strategy for alignment with Big Data technology trends resulting in the acquisition of the company by Actian Corp in 2012. Robert has been an active member of both commercial and open source initiatives in the NoSQL and Object Relational Mapping spaces for the past 18 years, developing software, leading project teams, authoring articles and presenting at major conferences on these topics. In his previous life, Robert was an electronic engineer developing first generation wireless, spread spectrum based security systems.

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  • What is the advantage of currying?

    - by Mad Scientist
    I just learned about currying, and while I think I understand the concept, I'm not seeing any big advantage in using it. As a trivial example I use a function that adds two values (written in ML). The version without currying would be fun add(x, y) = x + y and would be called as add(3, 5) while the curried version is fun add x y = x + y (* short for val add = fn x => fn y=> x + y *) and would be called as add 3 5 It seems to me to be just syntactic sugar that removes one set of parentheses from defining and calling the function. I've seen currying listed as one of the important features of a functional languages, and I'm a bit underwhelmed by it at the moment. The concept of creating a chain of functions that consume each a single parameter, instead of a function that takes a tuple seems rather complicated to use for a simple change of syntax. Is the slightly simpler syntax the only motivation for currying, or am I missing some other advantages that are not obvious in my very simple example? Is currying just syntactic sugar?

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  • Visually stunning maps and PivotViewer

    - by Rob Farley
    One of the things about PivotViewer is that it runs in the Silverlight platform and can be extended recently. One of my guys at LobsterPot, Roger Noble, has used this to incorporate a Bing Maps layer, showing items which have  Latitude and Longitude values there. We’re already talking to a hospital about using this to allow them to browse their patient data, including showing the patients on a map according to which bed they’re in. Interesting times – this will involve having custom tiles instead of the ones from Bing Maps, but the idea is similar. Of course, we’ll be using Bing Maps to show where the patients live. I should also mention that this is a work-in-progress still. Figuring out how to use PivotViewer isn’t trivial, and we’ve done quite a lot of experimenting to see how to get things working. If you find bugs, please feel free to let me know (rob_farley at hotmail will usually reach me), and we’ll add them to our list. Here are some screenshots that I made recently using the collection at http://pivot.lobsterpot.com.au/flickr – by selecting a tag, you can get a new bunch of images. A couple of images that were taken in Iceland. Some from St Mary’s Lighthouse near Newcastle, UK. And some from around Big Ben in London. I’d recommend using either Firefox or Internet Explorer if you choose to browse this yourself. It seems the Chrome browser support for Silverlight doesn’t quite handle things as nicely as we’d all like. I imagine that at some point, we may enhance the Flickr collection, to be able to search on more than tags, but as a sample collection, it seems to work quite well.

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  • IT Optimization Plan Pays Off For UK Retailer

    - by Brian Dayton
    I caught this article in ComputerworldUK yesterday. The headline talks about UK-based supermarket chain Morrisons is increasing their IT spend...OK, sounds good. Even nicer that Oracle is a big part of that. But what caught my eye were three things: 1) Morrison's truly has a long term strategy for IT. In this case, modernizing and optimizing how they use IT for business advantage.   2) Even in a tough economic climate, Morrison's views IT investments as contributing to and improving the bottom line. Specifically, "The investment in IT contributed to a 21 percent increase in Morrison's underlying profit.."   3) The phased, 3-year "Optimization Plan" took a holistic approach to their business--from CRM and Supply Chain systems to the underlying application infrastructure. On the infrastructure front, adopting a more flexible Service-Oriented Architecture enabled them to be more agile and adapt their business and Identity Management helped with sometimes mundane (but costly) issues like lost passwords and being able to document who has access to what.   Things don't always turn out so rosy. And I know it was a long and difficult process...but it's nice to see a happy ending every once in a while.  

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  • Dealing with "jumping" sprites: badly centered?

    - by GigaBass
    Thing is, I've used darkFunction Editor as a way to get all the spriteCoordinates off a spriteSheet for each individual sprite, and parse the .xml it generates inside my game. It all works fine, except when the sprites are all similarly sized, but when a sprite changes from a small sprite into a big one, such as here: When from walking from some direction, to attacking, it starts "jumping", appearing glitchy, because it's not staying in the same correct position, only doing so for the right attacking sprite, due to the drawing being made from the lower left part of the rectangle. I think someone experienced will immediately recognize the problem I mean, if not, when I return home soon, I will shoot a little youtube video demonstrating the issue! So the question is: what possible solutions are there? I've thought that some sort of individual frame "offset" system might be the answer, or perhaps splitting, in this case, the sprite in 2: the sword, and the character itself, and draw sword according to character's facing, but that might be overly complex. Another speculation would be that there might be some sort of method in LibGdx, the library I'm using, that allows me to change the drawing center (which I looked for and didn't find), so I could choose from where the drawing starts.

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  • mpirun -np N, what if N is larger than my core number?

    - by Daniel
    Say I have a 4-core workstation, what would linux (Ubuntu) do if I execute mpirun -np 9 XXX Q1. Will 9 run immediately together, or they will run 4 after 4? Q2. I suppose that using 9 is not good, because the remainder 1, it will make the computer confused, (I don't know is it going to be confused at all, or the "head" of the computer will decide which core among the 4 cores will be used?) Or it will be randomly picked. Who decide which one core to call? Q3. If I feel my cpu is not bad and my ram is okay and large enough, and my case is not very big. Is it a good idea in order to fully use my cpu and ram, that I do mpirun -np 8 XXX, or even mpirun -np 12 XXX. Q4. Who decides all of these effciency optimization, Ubuntu, or linux, or motherboard or cpu? Your enlightenment would be really appreciated.

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  • Thinktecture.IdentityServer Beta 1

    - by Your DisplayName here!
    I just upload beta 1 to codeplex. Please test this version and give me feedback. Some quick notes on setup Watch the intro screencast on the codeplex site. Use the setup tool to set the signing and SSL certificate. You can now also set the ACLs on the private key for your worker pool account. IIS is required . SSL for the IIS site the STS runs in is required. Users of the STS must be in the 'IdentityServerUsers' role. Admins of the STS must be in the 'IdentityServerAdministrators' roles. What’s new? Mainly smaller bits and pieces and some refactoring. The biggest under the cover change is a new authorization model for the STS itself. If, e.g. you don’t like the new roles I introduced, you can easily change the behavior in the claims authorization manager in the STS web site project. What’s missing? The big one is Azure support. Not that I ran into unforeseeable problems here, I just wanted to wait until the on-premise version is more stabilized. Now with B1 I can start adding Azure support back.

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  • Need for gksudo for "Install new software" in eclipse

    - by Captain Giraffe
    I have been developing for android on eclipse for a while now, and my experience with the eclipse environment on Ubuntu10.10 has not been a smooth one. With the repo install of eclipse I have had to sudo eclipse to install the required components for android development. (a big red flag for me) I tried today to install updates for the eclipse and android platform and my eclipse installation seems to have broken horribly. I can no longer find and of the urls for new software if i gksudo it, if I run it in user mode it fails (as it always has) with permissions problems. I have chowned user:user all my eclipse and android related private/user files. This is a system running ubuntu 10.10 with gnome2.x. On my kubuntu 11.10 install it work a lot better. Is there an easy fix to this? Is the repo version of eclipse broken? Should I do a clean install for just my user? (if so can I retain my previously installed software? the installation process is very time consuming) I saw there was a previous post here recommending this for new installations.

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  • How To Make Hundreds of Complex Photo Edits in Seconds With Photoshop Actions

    - by Eric Z Goodnight
    Have a huge folder of images needing tweaks? A few hundred adjustments may seem like a big, time consuming job—but read one to see how Photoshop can do repetitive tasks automatically, even if you don’t know how to program! Photoshop Actions are a simple way to program simple routines in Photoshop, and are a great time saver, allowing you to re-perform tasks over and over, saving you minutes or hours, depending on the job you have to work on. See how any bunch of images and even some fairly complicated photo tweaking can be done automatically to even hundreds of images at once. When Can I use Photoshop Actions? Photoshop actions are a way of recording the tools, menus, and keys pressed while using the program. Each time you use a tool, adjust a color, or use the brush, it can be recorded and played back over any file Photoshop can open. While it isn’t perfect and can get very confused if not set up correctly, it can automate editing hundreds of images, saving you hours and hours if you have big jobs with complex edits. The image illustrated above is a template for a polaroid-style picture frame. If you had several hundred images, it would actually be a simple matter to use Photoshop Actions to create hundreds of new images inside the frame in almost no time at all. Let’s take a look at how a simple folder of images and some Image editing automation can turn lots of work into a simple and easy job. Creating a New Action Actions is a default part of the “Essentials” panel set Photoshop begins with as a default. If you can’t see the panel button under the “History” button, you can find Actions by going to Window > Actions or pressing Alt + F9. Click the in the Actions Panel, pictured in the previous illustration on the left. Choose to create a “New Set” in order to begin creating your own custom Actions. Name your action set whatever you want. Names are not relevant, you’ll simply want to make it obvious that you have created it. Click OK. Look back in the layers panel. You’ll see your new Set of actions has been added to the list. Click it to highlight it before going on. Click the again to create a “New Action” in your new set. If you care to name your action, go ahead. Name it after whatever it is you’re hoping to do—change the canvas size, tint all your pictures blue, send your image to the printer in high quality, or run multiple filters on images. The name is for your own usage, so do what suits you best. Note that you can simplify your process by creating shortcut keys for your actions. If you plan to do hundreds of edits with your actions, this might be a good idea. If you plan to record an action to use every time you use Photoshop, this might even be an invaluable step. When you create a new Action, Photoshop automatically begins recording everything you do. It does not record the time in between steps, but rather only the data from each step. So take your time when recording and make sure you create your actions the way you want them. The square button stops recording, and the circle button starts recording again. With these basics ready, we can take a look at a sample Action. Recording a Sample Action Photoshop will remember everything you input into it when it is recording, even specific photographs you open. So begin recording your action when your first photo is already open. Once your first image is open, click the record button. If you’re already recording, continue on. Using the File > Place command to insert the polaroid image can be easier for Actions to deal with. Photoshop can record with multiple open files, but it often gets confused when you try it. Keep your recordings as simple as possible to ensure your success. When the image is placed in, simply press enter to render it. Select your background layer in your layers panel. Your recording should be following along with no trouble. Double click this layer. Double clicking your background layer will create a new layer from it. Allow it to be renamed “Layer 0” and press OK. Move the “polaroid” layer to the bottom by selecting it and dragging it down below “Layer 0” in the layers panel. Right click “Layer 0” and select “Create Clipping Mask.” The JPG image is cropped to the layer below it. Coincidentally, all actions described here are being recorded perfectly, and are reproducible. Cursor actions, like the eraser, brush, or bucket fill don’t record well, because the computer uses your mouse movements and coordinates, which may need to change from photo to photo. Click the to set your Photograph layer to a “Screen” blending mode. This will make the image disappear when it runs over the white parts of the polaroid image. With your image layer (Layer 0) still selected, navigate to Edit > Transform > Scale. You can use the mouse to resize your Layer 0, but Actions work better with absolute numbers. Visit the Width and Height adjustments in the top options panel. Click the chain icon to link them together, and adjust them numerically. Depending on your needs, you may need to use more or less than 30%. Your image will resize to your specifications. Press enter to render, or click the check box in the top right of your application. + Click on your bottom layer, or “polaroid” in this case. This creates a selection of the bottom layer. Navigate to Image > Crop in order to crop down to your bottom layer selection Your image is now resized to your bottommost layer, and Photoshop is still recording to that effect. For additional effect, we can navigate to Image > Image Rotation > Arbitrary to rotate our image by a small tilt. Choosing 3 degrees clockwise , we click OK to render our choice. Our image is rotated, and this step is recorded. Photoshop will even record when you save your files. With your recording still going, find File > Save As. You can easily tell Photoshop to save in a new folder, other than the one you have been working in, so that your files aren’t overwritten. Navigate to any folder you wish, but do not change the filename. If you change the filename, Photoshop will record that name, and save all your images under whatever you type. However, you can change your filetype without recording an absolute filename. Use the pulldown tab and select a different filetype—in this instance, PNG. Simply click “Save” to create a new PNG based on your actions. Photoshop will record the destination and the change in filetype. If you didn’t edit the name of your file, it will always use the variable filename of any image you open. (This is very important if you want to edit hundreds of images at once!) Click File > Close or the red “X” in the corner to close your filetype. Photoshop can record that as well. Since we have already saved our image as a JPG, click “NO” to not overwrite your original image. Photoshop will also record your choice of “NO” for subsequent images. In your Actions panel, click the stop button to complete your action. You can always click the record button to add more steps later, if you want. This is how your new action looks with its steps expanded. Curious how to put it into effect? Read on to see how simple it is to use that recording you just made. Editing Lots of Images with Your New Action Open a large number of images—as many as you care to work with. Your action should work immediately with every image on screen, although you may have to test and re-record, depending on how you did. Actions don’t require any programming knowledge, but often can get confused or work in a counter-intuitive way. Record your action until it is perfect. If it works once without errors, it’s likely to work again and again! Find the “Play” button in your Actions Panel. With your custom action selected, click “Play” and your routine will edit, save, and close each file for you. Keep bashing “Play” for each open file, and it will keep saving and creating new files until you run out of work you need to do. And in mere moments, a complicated stack of work is done. Photoshop actions can be very complicated, far beyond what is illustrated here, and can even be combined with scripts and other actions, creating automated creation of potentially very complex files, or applying filters to an entire portfolio of digital photos. Have questions or comments concerning Graphics, Photos, Filetypes, or Photoshop? Send your questions to [email protected], and they may be featured in a future How-To Geek Graphics article. Image Credits: All images copyright Stephanie Pragnell and author Eric Z Goodnight, protected under Creative Commons. Latest Features How-To Geek ETC How To Make Hundreds of Complex Photo Edits in Seconds With Photoshop Actions How to Enable User-Specific Wireless Networks in Windows 7 How to Use Google Chrome as Your Default PDF Reader (the Easy Way) How To Remove People and Objects From Photographs In Photoshop Ask How-To Geek: How Can I Monitor My Bandwidth Usage? Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Smart Taskbar Is a Thumb Friendly Android Task Launcher Comix is an Awesome Comics Archive Viewer for Linux Get the MakeUseOf eBook Guide to Speeding Up Windows for Free Need Tech Support? Call the Star Wars Help Desk! [Video Classic] Reclaim Vertical UI Space by Adding a Toolbar to the Left or Right Side of Firefox Androidify Turns You into an Android-style Avatar

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  • XMLPad – a new tool in my developer utility belt

    - by jamiet
    Yesterday I was on the lookout for a free tool that would help me write XPath statements. I put a shout out on Twitter and Johan Barnard replied saying : Give XMLPad a try http://www.wmhelp.com/xmlpad3.htm I’m sure there are legions of developers out there that know all about XMLPad but I had never heard about it so I suspect some of you reading haven’t either. Today I downloaded it to give it a run out and I gotta say – I love it. I only used it to do one thing –constructing an XPath expression to point to a particular Configuration definition in a .dtsx file- and it allowed me to do that with consummate ease. The feature I particularly loved was that, similar to Google Suggest, it showed me results from my expression as I typed. Here is a screenshot of my XPath expression to find (and just try saying this in a hurry) the value of a property whose DTS:Name attribute equals ‘ConfigurationString’ of a Configuration definition where the value of that Configuration definition’s property whose DTS:Name attribute equals ‘ObjectName’, equals ‘BIConfig My XPath expression: /DTS:Executable/DTS:Configuration[DTS:Property[@DTS:Name=’ObjectName’]=’BIConfig’]/DTS:Property[@DTS:Name=’ConfigurationString’] and believe me, there was no way I would have been able to come up with that without a tool to help me! So, an easy tip for you – if you need to write XPath expression download XMLPad for free from http://www.wmhelp.com/xmlpad3.htm and see what it can do for you. That’s all. Its now Friday evening and I’m shutting down and relaxing before heading to the big game at Twickenham tomorrow (yes, I have a ticket ). Have a good one! @Jamiet

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  • Software Architecture and Design vs Psychology of HCI class

    - by Joey Green
    I have two classes to choose from and I'm wanting to get an opinion from the more experienced game devs which might be better for someone who wants to be an indie game dev. The first is a Software Architecture and Design course and the second is a course titled Psychology of HCI. I've previously have taken a Software Design course that was focused only on design patterns. I've also taken an Introduction to HCI course. Software Architecture and Design Description Topics include software architectures, methodologies, model representations, component-based design ,patterns,frameworks, CASE-based desgins, and case studies. Psychology of HCI Description Exploration of psychological factors that interact with computer interface usablilty. Interface design techniques and usability evaluation methods are emphasized. I know I would find both interesting, but my concern is really which one might be easier to pick up on my own. I know HCI is relevant to game dev, but am un-sure if the topics in the Software Architecture class would be more for big software projects that go beyond the scope of games. Also, I'm not able to take both because the overlap.

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  • Keep Your Eye on the Ball

    - by [email protected]
    With the FIFA World Cup 2010 in South Africa almost a week underway, the soccer fans all around the World are talking about at least 2 things. That typical vuvuzela sound and the new Jabulani ball, saying it moves unpredictably, is difficult to handle and somehow the altitude of the World Cup stadiums also seem to be a contributing factor.(Picture taken from http://www.flickr.com/photos/warrenski/4143923059/ under a Creative Commons license)Although the FIFA states that it hasn't received any official complaints, the end users don't seem to be very happy with this new ball. This brings me to a comparison with IT management and testing. When you're in a situation where you're introducing a new product, in IT terms, introducing a new application, you would like to test all possible scenarios that your end users could be using and experiencing. However, that's a very time and resource intensive process to do for every application change or update.  It's like getting ready for the big game but you have no game plan.That's why a new approach has been developed. One that's based on the 80/20 rule. Testing 80% of the application will cost about 20% of the efforts. The remaining 20% of your application will not be tested before deployment, but monitored with a real user monitoring solution immediately after deployment. These tools track all user experiences, including error messages and the performance and availability metrics from an end user perspective. Should any anomaly occur, you would be able to repair it quickly so you and your end users can get back into the game.These real user sessions can be easily converted into testing scripts, so the 80% of the application testing can be complimented with the remaining 20%.Oracle Enterprise Manager 11g group of products offers both the real user monitoring solution with Oracle Real User Experience Insight, as well as the required testing solution with Oracle Application Testing Suite. Visit our Oracle Enterprise Manager 11g resource center and find out how it's Business-Driven IT Management approach will help you keep your eye on your business ball.Happy World Cup.

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  • How to Best Optimize up Model Transforms, Import 3DS Animations Into XNA 4.0?

    - by Jason R. Mick
    Relative beginner to XNA, but trying to build a multi-purpose (3D) game frameworking in XNA 4. Been using the Reed (O'Reilly) and Cawood/McGee (McGraw Hill) guides. My question is multi-faceted and involves how to most efficiently handle models. I'm using 3DS Max 2010 with kw-Xport to ship out my models as .X files. Solved an early problem by using my depth stencil state. My models are now loading properly (yay!) and I have basic bounding working, I just want to optimize transforming models and get animations working as a next step. My questions on models are: 1. Do you have any suggestions for good resources on exporting 3DS animations to XNA? I've seen some resources on how to handle animations in XNA, but most skimp on basic topics of how to convert multi-animation 3DS files. For example how do I take one big long string of keyframed animations (say running, frame 5-20, climbing frames 25-45, etc.) and turned them into named XNA animations. To my understanding every XNA animation has to have a name, but I haven't seen any tutorials on creating a new named animation from a subset of frames. 2. Is it faster to load a model once and animate/transform that base model on the fly @ draw time, or to load multiple models? My game will have multiple enemies, and I've already seen some lagginess in XNA, so II want to make my code efficient... 3. I've heard people on app hub talking about making custom content processors for models-- what is the benefit of this? Does it speed up transforming or animating the models? If so, can you point me towards any good (model-centric) tutorials? (I've built a custom height map content processor to generate terrain, following Cawood's examples, I'm just a bit confused as to how a model content processor would be implemented.)

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