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• ArchBeat Link-o-Rama for 11/15/2011

  - by Bob Rhubart

  Java Magazine - November/December 2011 - by and for the Java Community Java Magazine is an essential source of knowledge about Java technology, the Java programming language, and Java-based applications for people who rely on them in their professional careers, or who aspire to. Enterprise 2.0 Conference: November 14-17 | Kellsey Ruppel "Oracle is proud to be a Gold sponsor of the Enterprise 2.0 West Conference, November 14-17, 2011 in Santa Clara, CA. You will see the latest collaboration tools and technologies, and learn from thought leaders in Enterprise 2.0's comprehensive conference." The Return of Oracle Wikis: Bigger and Better | @oracletechnet The Oracle Wikis are back - this time, with Oracle SSO on top and powered by Atlassian's Confluence technology. These wikis offer quite a bit more functionality than the old platform. Cloud Migration Lifecycle | Tom Laszewski Laszewski breaks down the four steps in the Set Up Phase of the Cloud Migration lifecycle. Architecture all day. Oracle Technology Network Architect Day - Phoenix, AZ - Dec14 Spend the day with your peers learning from Oracle experts in engineered systems, cloud computing, Oracle Coherence, Oracle WebLogic, and more. Registration is free, but seating is limited. SOA all the Time; Architects in AZ; Clearing Info Integration Hurdles This week on the Architect Home Page on OTN. Live Webcast: New Innovations in Oracle Linux Date: Tuesday, November 15, 2011 Time: 9:00 AM PT / Noon ET Speakers: Chris Mason, Elena Zannoni. People in glass futures should throw stones | Nicholas Carr "Remember that Microsoft video on our glassy future? Or that one from Corning? Or that one from Toyota?" asks Carr. "What they all suggest, and assume, is that our rich natural 'interface' with the world will steadily wither away as we become more reliant on software mediation." Integration of SABSA Security Architecture Approaches with TOGAF ADM | Jeevak Kasarkod Jeevak Kasarkod's overview of a new paper from the OpenGroup and the SABSA institute "which delves into the incorporatation of risk management and security architecture approaches into a well established enterprise architecture methodology - TOGAF." Cloud Computing at the Tactical Edge | Grace Lewis - SEI Lewis describes the SEI's work with Cloudlets, " lightweight servers running one or more virtual machines (VMs), [that] allow soldiers in the field to offload resource-consumptive and battery-draining computations from their handheld devices to nearby cloudlets." Simplicity Is Good | James Morle "When designing cluster and storage networking for database platforms, keep the architecture simple and avoid the complexities of multi-tier topologies," says Morle. "Complexity is the enemy of availability." Mainframe as the cloud? Tom Laszewski There's nothing new about using the mainframe in the cloud, says Laszewski. Let Devoxx 2011 begin! | The Aquarium The Aquarium marks the kick-off of Devoxx 2011 with "a quick rundown of the Java EE and GlassFish side of things."

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• Is there a way to update all Java related alternatives?

  - by James McMahon

  Is there a way to quickly switch over all the Java related alternatives using update-alternatives? For instance, if want to switch Java over to 7, I run sudo update-alternatives --config java and select the Java 7 OpenJdk. But if I run update-alternatives --get-selections | grep java I get the following, appletviewer auto /usr/lib/jvm/java-6-openjdk-amd64/bin/appletviewer extcheck auto /usr/lib/jvm/java-6-openjdk-amd64/bin/extcheck idlj auto /usr/lib/jvm/java-6-openjdk-amd64/bin/idlj itweb-settings auto /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/itweb-settings jar auto /usr/lib/jvm/java-6-openjdk-amd64/bin/jar jarsigner auto /usr/lib/jvm/java-6-openjdk-amd64/bin/jarsigner java manual /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java javac auto /usr/lib/jvm/java-6-openjdk-amd64/bin/javac javadoc auto /usr/lib/jvm/java-6-openjdk-amd64/bin/javadoc javah auto /usr/lib/jvm/java-6-openjdk-amd64/bin/javah javap auto /usr/lib/jvm/java-6-openjdk-amd64/bin/javap javaws auto /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/javaws jconsole auto /usr/lib/jvm/java-6-openjdk-amd64/bin/jconsole jdb auto /usr/lib/jvm/java-6-openjdk-amd64/bin/jdb jexec auto /usr/lib/jvm/java-6-openjdk-amd64/jre/lib/jexec jhat auto /usr/lib/jvm/java-6-openjdk-amd64/bin/jhat jinfo auto /usr/lib/jvm/java-6-openjdk-amd64/bin/jinfo jmap auto /usr/lib/jvm/java-6-openjdk-amd64/bin/jmap jps auto /usr/lib/jvm/java-6-openjdk-amd64/bin/jps jrunscript auto /usr/lib/jvm/java-6-openjdk-amd64/bin/jrunscript jsadebugd auto /usr/lib/jvm/java-6-openjdk-amd64/bin/jsadebugd jstack auto /usr/lib/jvm/java-6-openjdk-amd64/bin/jstack jstat auto /usr/lib/jvm/java-6-openjdk-amd64/bin/jstat jstatd auto /usr/lib/jvm/java-6-openjdk-amd64/bin/jstatd keytool auto /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/keytool native2ascii auto /usr/lib/jvm/java-6-openjdk-amd64/bin/native2ascii orbd auto /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/orbd pack200 auto /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/pack200 policytool auto /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/policytool rmic auto /usr/lib/jvm/java-6-openjdk-amd64/bin/rmic rmid auto /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/rmid rmiregistry auto /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/rmiregistry schemagen auto /usr/lib/jvm/java-6-openjdk-amd64/bin/schemagen serialver auto /usr/lib/jvm/java-6-openjdk-amd64/bin/serialver servertool auto /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/servertool tnameserv auto /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/tnameserv unpack200 auto /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/unpack200 wsgen auto /usr/lib/jvm/java-6-openjdk-amd64/bin/wsgen wsimport auto /usr/lib/jvm/java-6-openjdk-amd64/bin/wsimport xjc auto /usr/lib/jvm/java-6-openjdk-amd64/bin/xjc As you can see, my Java alternative was switched over to 7, but every other alternative based on OpenJDK 6 was not switched over. Sure I could switch each one manually or write a script to do so, but I assume there is a better way to accomplish this.

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• How to Write an E-Book

  A few days ago my attention was drawn to a tweet spat between Karl Seguin and Scott Hanselman around the relaunch of ASP.NET and the title element in HTML. Tempest in a teapot of course, but worthwhile as I did some googling on Karl and found his blog at codebetter.com. From there it was a short jump to his free e-book, The Foundations of Programming. This short book is distinguished by its orientation, opinionated, its tone, mentoring and its honesty, which is refreshing. In Foundations, Karl covers what he considers the basics of programming and good design, including test driven development, dependency injection and domain driven design. Karl is opinionated, as the topics suggest, and doesnt bother to pretend that he doesnt think what hes suggesting is the better way, not just another way. He is aligned with ALT.NET, and gives an excellent overview of what that means; an overview more enlightening than the ALT.NET site. ALT.NET has its critics, but presenting a strong opinion grabbed my attention as a reader. It is a short walk from opinionated to hectoring,  but Karl held my attention without insulting me. He takes the time to explain, with examples, from the ground up, the problems that test driven development and dependency injection solve. So for dependency injection he builds it up from no DI, to a hand crafted approach, to a full fledged DI framework. This approach is more persuasive than just proscriptive and engaged me as the reader to follow along with his train of thought. Foundations is not as pedantic as I am making it sound. The final ingredient in Karls mix is honesty. He acknowledges that sometimes unit testing does cost more up front and take more time. He admits that sometimes he designs something a certain way just to be testable. He also warns that focusing too much on DI and loose coupling can lead to the poor design you are trying to avoid. These points add depth to his argument as I could tell hes speaking from experience, with some hard won lessons. I enjoyed The Foundations of Programming. When I was done with it, I was amazed how much I got a lot out of its 80 some pages. It is a rarity to come across something worthwhile that is longer then a tweet, but shorter than a tome these days. Well done Karl.   -- Relevant Links -- The now titled and newly relaunched page in question: http://www.asp.net/ The pleasantly confusing ALT.NET homepage: http://altdotnet.org/ A longer review, with details, chapter listings and all that important stuff: http://accidentaltechnologist.com/book-reviews/book-review-foundations-of-programming-by-karl-seguin/Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• formula for replicating glTexGen in opengl es 2.0 glsl

  - by visualjc

  I also posted this on the main StackExchange, but this seems like a better place, but for give me for the double post if it shows up twice. I have been trying for several hours to implement a GLSL replacement for glTexGen with GL_OBJECT_LINEAR. For OpenGL ES 2.0. In Ogl GLSL there is the gl_TextureMatrix that makes this easier, but thats not available on OpenGL ES 2.0 / OpenGL ES Shader Language 1.0 Several sites have mentioned that this should be "easy" to do in a GLSL vert shader. But I just can not get it to work. My hunch is that I'm not setting the planes up correctly, or I'm missing something in my understanding. I've pored over the web. But most sites are talking about projected textures, I'm just looking to create UV's based on planar projection. The models are being built in Maya, have 50k polygons and the modeler is using planer mapping, but Maya will not export the UV's. So I'm trying to figure this out. I've looked at the glTexGen manpage information: g = p1xo + p2yo + p3zo + p4wo What is g? Is g the value of s in the texture2d call? I've looked at the site: http://www.opengl.org/wiki/Mathematics_of_glTexGen Another size explains the same function: coord = P1*X + P2*Y + P3*Z + P4*W I don't get how coord (an UV vec2 in my mind) is equal to the dot product (a scalar value)? Same problem I had before with "g". What do I set the plane to be? In my opengl c++ 3.0 code, I set it to [0, 0, 1, 0] (basically unit z) and glTexGen works great. I'm still missing something. My vert shader looks basically like this: WVPMatrix = World View Project Matrix. POSITION is the model vertex position. varying vec4 kOutBaseTCoord; void main() { gl_Position = WVPMatrix * vec4(POSITION, 1.0); vec4 sPlane = vec4(1.0, 0.0, 0.0, 0.0); vec4 tPlane = vec4(0.0, 1.0, 0.0, 0.0); vec4 rPlane = vec4(0.0, 0.0, 0.0, 0.0); vec4 qPlane = vec4(0.0, 0.0, 0.0, 0.0); kOutBaseTCoord.s = dot(vec4(POSITION, 1.0), sPlane); kOutBaseTCoord.t = dot(vec4(POSITION, 1.0), tPlane); //kOutBaseTCoord.r = dot(vec4(POSITION, 1.0), rPlane); //kOutBaseTCoord.q = dot(vec4(POSITION, 1.0), qPlane); } The frag shader precision mediump float; uniform sampler2D BaseSampler; varying mediump vec4 kOutBaseTCoord; void main() { //gl_FragColor = vec4(kOutBaseTCoord.st, 0.0, 1.0); gl_FragColor = texture2D(BaseSampler, kOutBaseTCoord.st); } I've tried texture2DProj in frag shader Here are some of the other links I've looked up http://www.gamedev.net/topic/407961-texgen-not-working-with-glsl-with-fixed-pipeline-is-ok/ Thank you in advance.

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• Site Studio Mobile Example - WCM Reuse

  - by john.brunswick

  Mobile internet usage is growing by leaps and bounds and it is theorized that in the not-to-distant future it will eclipse traditional access via desktop browsers. Mary Meeker, a managing director at Morgan Stanley and head of their global technology research team, recently predicted that mobile usage will eclipse desktop usage within the next 5 years in an Events@Google series presentation. In order for organizations to reach their prospects, customers and business partners, they will need to make their content readily available on mobile devices. A few years ago it was fairly challenging to provide a special, separate, site to cater to mobile users using technologies like WML (Wireless Markup Language). Modern mobile browsers have rendered the need for this as irrelevant and now the focus has moved toward providing a browsing experience that works well on small screen sizes and is highly performant. What does all of this mean for Oracle UCM? Taking site content from an existing Site Studio site and targeting it for consumption for mobile devices is a very straightforward process that is aided by a number of native capabilities in the product. The example highlighted in this post takes advantage of dynamic conversion capabilities in Oracle UCM to enable site content to be created and updated via MS Office documents. These documents are then converted to a simple, clean HTML format for consumption in the desktop and mobile browsing experiences. To help better understand how this is possible the example below shows a fictional .COM and its mobile site counterpart that both leverage the same underlying content. The scenario is not complete or production ready, but highlights that a mobile experience may be best delivered by omitting portions of a site that would be present within the version served to desktop clients. If you have browsed CNet (news.com) on a mobile device it becomes quickly apparent that they are serving an optimized version for your mobile device. An iPhone style version can be accessed at http://iphone.cnet.com/. In order to do that they leveraged some work done for the iPhone iUi project developed by Joe Hewitt that provides mobile browsers an experience that is similar to what users may find in a native iPhone application. For our example parts of this framework are used (the CSS) and this approach provides a page that will degrade nicely over a wide range of mobile browsers, since it is comprised of lightweight HTML markup and CSS. The iPhone iUi framework also provides some nice JavaScript to enable animated transitions between pages, but for the widest range of mobile browser compatibility we will only incorporate the CSS and HTML DIV / UL based page markup in our example.

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• Pure Front end JavaScript with Web API versus MVC views with ajax

  - by eyeballpaul

  This was more a discussion for what peoples thoughts are these days on how to split a web application. I am used to creating an MVC application with all its views and controllers. I would normally create a full view and pass this back to the browser on a full page request, unless there were specific areas that I did not want to populate straight away and would then use DOM page load events to call the server to load other areas using AJAX. Also, when it came to partial page refreshing, I would call an MVC action method which would return the HTML fragment which I could then use to populate parts of the page. This would be for areas that I did not want to slow down initial page load, or areas that fitted better with AJAX calls. One example would be for table paging. If you want to move on to the next page, I would prefer it if an AJAX call got that info rather than using a full page refresh. But the AJAX call would still return an HTML fragment. My question is. Are my thoughts on this archaic because I come from a .net background rather than a pure front end background? An intelligent front end developer that I work with, prefers to do more or less nothing in the MVC views, and would rather do everything on the front end. Right down to web API calls populating the page. So that rather than calling an MVC action method, which returns HTML, he would prefer to return a standard object and use javascript to create all the elements of the page. The front end developer way means that any benefits that I normally get with MVC model validation, including client side validation, would be gone. It also means that any benefits that I get with creating the views, with strongly typed html templates etc would be gone. I believe this would mean I would need to write the same validation for front end and back end validation. The javascript would also need to have lots of methods for creating all the different parts of the DOM. For example, when adding a new row to a table, I would normally use the MVC partial view for creating the row, and then return this as part of the AJAX call, which then gets injected into the table. By using a pure front end way, the javascript would would take in an object (for, say, a product) for the row from the api call, and then create a row from that object. Creating each individual part of the table row. The website in question will have lots of different areas, from administration, forms, product searching etc. A website that I don't think requires to be architected in a single page application way. What are everyone's thoughts on this? I am interested to hear from front end devs and back end devs.

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• What will be important in Training in 2011?

  - by anders.northeved

    Now that we have started a new year I would like to give you a list of topics I think we will be discussing in training and learning in 2011. Some of the areas we have discussed earlier will still be just as important in 2011: Time-to-knowledge Still one of the most important issues for the training department. Internal content production Related to time-to-knowledge. How do we convert internal knowledge to a format that can be used for teaching others? LMS integration How do we get our existing LMS fully integrated with our other ERP modules like HCM, Order Management, Finance, Payroll etc. Some areas have been discussed before, but we’ll focus more on these in 2011: Combining internal and external training A majority of training departments use a combination of external and internal training. Having the right mix is vital for the quality and efficiency for most training organizations. Certification More rules and regulations means managing all employee certifications is more important than ever. Evolving trends in 2011: Social Learning We have been talking about this for a long time, but 2011 will be the year where we will start using it for real (OK, I also said so last year – but this year I’m right…). Real-life use of SCORM 2004 Again a topic we have talked about for a long time, but we are now actually starting to use it to give learners a better e-learning experience. How do we engage and delight the learner? e-learning makes economical sense, it can be easy to understand, it is convenient – but how do we make it more engaging and delight our learners? How to include more types of training in LMS One of the main focus area of 2011 will be how to manage and measure mobile learning , on-the-job-training and other forms of training in the LMS. Mobile Learning With the ever growing use of smart phones mobile learning will be THE hot topic of 2011 in the training world. New topics we will begin discussing in 2011: What is beyond web 2.0 and social learning? - could it be content verification and personal accreditation? Why gaming will not be the silver bullet for all types of e-learning Many people believe gaming can be used for any kind of training, but the creation is too expensive and time consuming for most applications. Do you agree with these predictions? What are your own predictions? Let me see your comments! (photo: © Marti, photoxpress.com)

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• Silverlight Cream for February 14, 2011 -- #1047

  - by Dave Campbell

  In this Issue: Mohamed Mosallem, Tony Champion, Gill Cleeren, Laurent Bugnion, Deborah Kurata, Jesse Liberty(-2-), Tim Heuer, Mike Taulty, John Papa, Martin Krüger, and Jeremy Likness. Above the Fold: Silverlight: "Binding to a ComboBox in Silverlight : A Gotcha" Tony Champion WP7: "An Ultra Light Windows Phone 7 MVVM Framework" Jeremy Likness Shoutouts: Steve Wortham has a post up discussing Silverlight 5, HTML5, and what the future may bring From SilverlightCream.com: Silverlight 4.0 Tutorial (12 of N): Collecting Attendees Feedback using Windows Phone 7 Mohamed Mosallem is up to number 12 in his Silverlight tutorial series. He's continuing his RegistrationBooth app, but this time, he's building a WP7 app to give attendee feedback. Binding to a ComboBox in Silverlight : A Gotcha If you've tried to bind to a combobox in Silverlight, you've probably either accomplished this as I have (with help) by having it right once, and continuing, but Tony Champion takes the voodoo out of getting it all working. Getting ready for Microsoft Silverlight Exam 70-506 (Part 5) Gill Cleeren has Part 5 of his exam preparation post up on SilverlightShow. As with the others, he provides many external links to good information. Referencing a picture in another DLL in Silverlight and Windows Phone 7 Laurent Bugnion explains the pitfalls and correct way to reference an image from a dll... good info for loading images such as icons for Silverlight in general and WP7 also. Silverlight MVVM Commanding II Deborah Kurata has a part 2 up on MVVM Commanding. The first part covered the built-in commanding for controls that inherit from ButtonBase... this post goes beyond that into other Silverlight controls. Reactive Drag and Drop Part 1 This Drag and Drop with Rx post by Jesse Liberty is the 4th in his Rx series. He begins with a video from the Rx team and applies reactive programming to mouse movements. Yet Another Podcast #24–Reactive Extensions On the heels of his previous post on Rx, in his latest 'Yet Another Podcast', Jesse Liberty chats with Matthew Podwysocki and Bart De Smet about Reactive Extensions. Silverlight 4 February 2011 Update Released Today Tim Heuer announced the release of the February 2011 Silverlight 4 release. Check out Tim's post for information about what's contained in this release. Blend Bits 25–Templating Part 3 In his 3rd Templating tutorial in BlendBits, Mike Taulty demonstrates the 'Make into Control' option rather than the other way around. Silverlight TV 61: Expert Chat on Deep Zoom, Touch, and Windows Phone John Papa interviews David Kelley in the latest Silverlight TV... David is discussing touch in Silverlight and for WP7 and his WP7 apps in the marketplace. Simple Hyperlinkbutton style Martin Krüger has a cool Hyperlink style available at the Expression Gallery. Interesting visual for entertaining your users. An Ultra Light Windows Phone 7 MVVM Framework Jeremy Likness takes his knowledge of MVVM (Jounce), and WP7 and takes a better look at what he'd really like to have for a WP7 framework. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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• Book Review (Book 10) - The Information: A History, a Theory, a Flood

  - by BuckWoody

  This is a continuation of the books I challenged myself to read to help my career - one a month, for year. You can read my first book review here, and the entire list is here. The book I chose for March 2012 was: The Information: A History, a Theory, a Flood by James Gleick. I was traveling at the end of last month so I’m a bit late posting this review here. Why I chose this book: My personal belief about computing is this: All computing technology is simply re-arranging data. We take data in, we manipulate it, and we send it back out. That’s computing. I had heard from some folks about this book and it’s treatment of data. I heard that it dealt with the basics of data - and the semantics of data, information and so on. It also deals with the earliest forms of history of information, which fascinates me. It’s similar I was told, to GEB which a favorite book of mine as well, so that was a bonus. Some folks I talked to liked it, some didn’t - so I thought I would check it out. What I learned: I liked the book. It was longer than I thought - took quite a while to read, even though I tend to read quickly. This is the kind of book you take your time with. It does in fact deal with the earliest forms of human interaction and the basics of data. I learned, for instance, that the genesis of the binary communication system is based in the invention of telegraph (far-writing) codes, and that the earliest forms of communication were expensive. In fact, many ciphers were invented not to hide military secrets, but to compress information. A sort of early “lol-speak” to keep the cost of transmitting data low! I think the comparison with GEB is a bit over-reaching. GEB is far more specific, fanciful and so on. In fact, this book felt more like something fro Richard Dawkins, and tended to wander around the subject quite a bit. I imagine the author doing his research and writing each chapter as a book that followed on from the last one. This is what possibly bothered those who tended not to like it, I think. Towards the middle of the book, I think the author tended to be a bit too fragmented even for me. He began to delve into memes, biology and more - I think he might have been better off breaking that off into another work. The existentialism just seemed jarring. All in all, I liked the book. I recommend it to any technical professional, specifically ones involved with data technology in specific. And isn’t that all of us? :)

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• 10.10 freezing when sftp downloading

  - by aGr

  My ubuntu 10.10 is freezing during downloading from my other computer on sftp. I thought it might be some nautilus issues so I tried it via command line and I got the same thing - after few minutes the whole computer freezes. Mostly the numlock led is blinking (I've heard somewhere that this means a kernel panic), but not in 100% cases. I dunno if that helps but here is a log from /var/log/message in the time that this happened. At least I hope so - it wasn't that big, when it happened before. But this looks quite "errorish", right? (isn't complete - see bottom) Jan 5 17:57:49 tomas-ntb kernel: imklog 4.2.0, log source = /proc/kmsg started. Jan 5 17:57:49 tomas-ntb rsyslogd: [origin software="rsyslogd" swVersion="4.2.0" x-pid="953" x-info="http://www.rsyslog.com"] (re)start Jan 5 17:57:49 tomas-ntb rsyslogd: rsyslogd's groupid changed to 103 Jan 5 17:57:49 tomas-ntb rsyslogd: rsyslogd's userid changed to 101 Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] Initializing cgroup subsys cpuset Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] Initializing cgroup subsys cpu Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] Linux version 2.6.35-24-generic (buildd@vernadsky) (gcc version 4.4.5 (Ubuntu/Linaro 4.4.4-14ubuntu5) ) #42-Ubuntu SMP Thu Dec 2 01:41:57 UTC 2010 (Ubuntu 2.6.35-24.42-generic 2.6.35.8) Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] BIOS-provided physical RAM map: Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] BIOS-e820: 0000000000000000 - 000000000009e800 (usable) Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] BIOS-e820: 000000000009e800 - 00000000000a0000 (reserved) Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved) Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] BIOS-e820: 0000000000100000 - 00000000dffa8000 (usable) Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] BIOS-e820: 00000000dffa8000 - 00000000dffb0000 (ACPI NVS) Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] BIOS-e820: 00000000dffb0000 - 00000000dffbff00 (ACPI data) Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] BIOS-e820: 00000000dffbff00 - 00000000dfff0000 (ACPI NVS) Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] BIOS-e820: 00000000dfff0000 - 00000000e0000000 (reserved) Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved) Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved) Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] BIOS-e820: 00000000ff700000 - 0000000100000000 (reserved) Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] BIOS-e820: 0000000100000000 - 0000000120000000 (usable) Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] BIOS-e820: 0000000120000000 - 0000000140000000 (reserved) Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] Notice: NX (Execute Disable) protection cannot be enabled: non-PAE kernel! Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] DMI 2.5 present. Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] AMI BIOS detected: BIOS may corrupt low RAM, working around it. Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] last_pfn = 0xdffa8 max_arch_pfn = 0x100000 Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106 Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] Scanning 0 areas for low memory corruption Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] modified physical RAM map: Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] modified: 0000000000000000 - 0000000000010000 (reserved) Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] modified: 0000000000010000 - 000000000009e800 (usable) Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] modified: 000000000009e800 - 00000000000a0000 (reserved) Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] modified: 00000000000e0000 - 0000000000100000 (reserved) Jan 5 17:57:49 tomas-ntb kernel: [ 0.000000] modified: 0000000000100000 - 00000000dffa8000 (usable) ... to long - for whole and better view click here

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• ODUG lands DotNetNuke guru Nik Kalyani as a speaker

  - by Brian Scarbeau

  If you are in the Orlando, FL area during the first week of May then you should head over to the Orlando DotNetNuke user group meeting. Nik Kalyani will be the speaker and you will learn a great deal from him. DotNetNuke Module Development with the MVP Pattern This session focuses on introducing attendees to the Model-View-Presenter pattern, support for which was recently introduced in the DotNetNuke Core. We'll start with a quick overview of the pattern, compare it to MVC, and then dive right into code. We will start with fundamentals and then develop a full-featured module using this pattern. In order to do justice to the pattern, we will use ASP.NET WebForms controls minimally and implement most of the UI using jQuery plug-ins. Finally, to increase audience participation (both present at the meeting and remote), we will use a hackathon-style model and allow anybody, anywhere to follow along with the presentation and code their own MVP-based solution that they can share online during or after the session. A URL with full instructions for the hackathon will be posted online a few days prior to the meeting. About Our Speaker Nik Kalyani is Co-founder and Strategic Advisor for DotNetNuke Corp., the company that manages the DotNetNuke Open Source project. Kalyani is also Founder and CEO of HyperCrunch. He is a technology entrepreneur with over 18 years of experience in the software industry. He is irrationally exuberant about technology, especially if it has anything to do with the Internet. HyperCrunch is his latest startup business that builds on his knowledge and experience from prior startups, two of them venture-funded. Kalyani is a creative tinkerer perpetually interested in looking around the corner and figuring out new and interesting ways to make the world a better place. An experienced web developer, he finds the business strategy and marketing aspects of the software business more exciting than writing code. When he does create software, his primary expertise is in creating products with compelling user experiences. Kalyani is most proficient with Microsoft technologies, but has no religious fanaticism about them. Kalyani has a bachelor’s degree in computer science from Western Michigan University. He is a frequent speaker at technology conferences and user group meetings. He lives in Mountain View, California with his wife and daughters. He blogs at http://www.kalyani.com and is @techbubble on Twitter.

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• The curious case of SOA Human tasks' automatic completion

  - by Kavitha Srinivasan

  A large south-Asian insurance industry customer using Oracle BPM and SOA ran into this. I have survived this ordeal previously myself but didnt think to blog it then. However, it seems like a good idea to share this knowledge with this reader community and so here goes.. Symptom: A human task (in a SOA/BPEL/BPM process) completes automatically while it should have been assigned to a proper user.There are no stack traces, no related exceptions in the logs. Why: The product is designed to treat human tasks that don't have assignees as one that is eligible for completion. And hence no warning/error messages are recorded in the logs. Usecase variant: A variant of this usecase, where an assignee doesnt exist in the repository is treated as a recoverable error. One can find this in the 'pending recovery' instances in EM and reactivate the task by changing the assignees in the bpm workspace as a process owner /administrator. But back to the usecase when tasks get completed automatically... When: This happens when the users/groups assigned to a task are 'empty' or null. This has been seen only on tasks whose assignees are derived from an assignment expression - ie at runtime an XPath is used to determine who to assign the task to. (This should not happen if task assignees are populated via swim-lane roles.) How to detect this in EM For instances that are auto-completed thus, one will notice in the Audit Trail of such instances, that the 'outcome' of the task is empty. The 'acquired by' element will also show as empty/null. Enabling the oracle.soa.services.workflow.* logger in em should print more verbose messages about this. How to fix this The application code needs two fixes: input to HT: The XSLT/XPath used  to set the task 'assignee' and the process itself should be enhanced to handle nulls better. For eg: if no-data-found, set assignees to alternate value, force default assignees etc. output from HT: Additionally, in the application code, check that the 'outcome' of the HT is not-null. If null, route the task to be performed again after setting the assignee correctly. Beginning PS4FP, one should be able to use 'grab' to route back to the task to fire again. Hope this helps. 

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• Is hiring a "chief intern" a good idea?

  - by dukeofgaming

  I'm starting an internship program for our software department and I was wondering about creating a position ("chief intern", intern supervisor, or whatever one should call it) with the following responsibilities: Train interns Coach interns Manage projects and tasks for interns Supervise intern's work in terms of rhythm and quality Act as a liaison between the main team's needs and interns performance/aspirations Evaluate and facilitate intern's progress when they want to grab a higher-level domain-specific task (at this point, a main dev team member can do mentoring) Get freely involved in the main team's software development tasks so that he himself can grow, and have full mentorship from the main dev team. I'm thinking that an apprentice-level engineer (below Jr., or Jr.; but being a graduate and working full-time) can handle this for a while (he will be trained by the main dev team first), until one of two things happen: He/she decides to move on to the main dev team by recommending an appropriate replacement (or me finding another one as a new hire) Keep leading the interns while still being able to grow to Jr. Eng., Eng., Sr. Eng I know the notion of a "chief intern" is common within the medical world, but I don't really know about that in the software world (I was a freelancer for most of my university years). A side-intention to this is also that, if this ends up being a higher rotation position (organically) because the intern supervisor wants to join the main dev team, this could help interns that aspire this position emerge as leaders. My main intention for this, though, is removing distractions from the main team but without making the interns suffer the lack of attention, which could lead to boredom and little intern retention. Is this "chief intern" idea common (or good at least)?, are there any obvious risks to it that I might not be seeing? Edit: I have a draft plan for the kind of work the interns would be doing: Are R&D mini-projects a good activity for interns? Edit #2: My intention is not keeping them isolated, but having someone focus on giving attention to them when we cannot. Edit #3: I'm now convince it is a good idea, but I will take the organic approach to hiring someone in such position: do it myself until I cannot. This way I'll know better what to expect from a person I hire for this role in the future, as well as what works and what doesn't with interns.

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• A* navigational mesh path finding

  - by theguywholikeslinux

  So I've been making this top down 2D java game in this framework called Greenfoot [1] and I've been working on the AI for the guys you are gonna fight. I want them to be able to move around the world realistically so I soon realized, amongst a couple of other things, I would need some kind of pathfinding. I have made two A* prototypes. One is grid based and then I made one that works with waypoints so now I need to work out a way to get from a 2d "map" of the obstacles/buildings to a graph of nodes that I can make a path from. The actual pathfinding seems fine, just my open and closed lists could use a more efficient data structure, but I'll get to that if and when I need to. I intend to use a navigational mesh for all the reasons out lined in this post on ai-blog.net [2]. However, the problem I have faced is that what A* thinks is the shortest path from the polygon centres/edges is not necessarily the shortest path if you travel through any part of the node. To get a better idea you can see the question I asked on stackoverflow [3]. I got a good answer concerning a visibility graph. I have since purchased the book (Computational Geometry: Algorithms and Applications [4]) and read further into the topic, however I am still in favour of a navigational mesh (See "Managing Complexity" [5] from Amit’s Notes about Path-Finding [6]). (As a side note, maybe I could possibly use Theta* to convert multiple waypoints into one straight line if the first and last are not obscured. Or each time I move back check to the waypoint before last to see if I can go straight from that to this) So basically what I want is a navigational mesh where once I have put it through a funnel algorithm (e.g. this one from Digesting Duck [7]) I will get the true shortest path, rather than get one that is the shortest path following node to node only, but not the actual shortest given that you can go through some polygons and skip nodes/edges. Oh and I also want to know how you suggest storing the information concerning the polygons. For the waypoint prototype example I made I just had each node as an object and stored a list of all the other nodes you could travel to from that node, I'm guessing that won't work with polygons? and how to I tell if a polygon is open/traversable or if it is a solid object? How do I store which nodes make up the polygon? Finally, for the record: I do want to programme this by myself from scratch even though there are already other solutions available and I don't intend to be (re) using this code in anything other than this game so it does not matter that it will inevitably be poor quality. http://greenfoot.org http://www.ai-blog.net/archives/000152.html http://stackoverflow.com/q/7585515/ http://www.cs.uu.nl/geobook/ http://theory.stanford.edu/~amitp/GameProgramming/MapRepresentations.html http://theory.stanford.edu/~amitp/GameProgramming/ http://digestingduck.blogspot.com/2010/03/simple-stupid-funnel-algorithm.html

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• Are You Afraid of Each Other? Study Shows CMO’s/CIO’s Missing Benefits of Collaboration

  - by Mike Stiles

  Remember that person in school you spent months being too scared to talk to?  Then when you finally did, it led to a wonderful friendship…if not something more. New research from Oracle, Social Media Today and Leader Networks shows marketing and IT need to get over whatever’s holding them back and start reaping the benefits of collaboration. Back in the old days of just a few years ago, marketing could stay on their side of the building, IT could stay on their side of the building, and both could refer to the other as “those guys.” Today, the structure of organizations is shifting from islands to “us,” one integrated body where each part knows what the other parts are doing, and all parts work together in accomplishing job one…a winning customer experience. Ignore that, and you start losing. Give your reluctance to change priority over the benefits of new collaborations, and you start losing. You’re either working together and accelerating forward or getting in the way of each other’s separate agendas and grinding down…much to your competitors’ delight. The study reveals a basic current truth: those who are collaborating in marketing and IT report being more effective, however less than 1/3 report collaborating even “frequently.” In other words, this is obviously a good thing, so we’d better not do it. Smart. The white paper, “Socially Driven Collaboration,” set out to explore how today’s always-changing digital, social and mobile landscape is forcing change across the enterprise, whether it’s welcomed or not. Part of what it found is marketing and IT leaders are not unaware of what’s going on and see their roles evolving. And both know the ability to collaborate more effectively now exists. And of those who are collaborating, over 2/3 say they’re “more effective” professionally because of it. Yet even if you don’t want to take the Oracle study’s word for it, an August 2013 Accenture study of 400 senior marketing and 250 IT executives revealed only 10% think CMO/CIO collaboration is at the right level. There’s a lot of room for improvement here, and not just around people. Collaboration is also being called for across processes and technologies. Business benefits of such collaboration cited in the Oracle study include stronger marketing messages, faster speed-to-market, greater product adoption, faster discovery of product and service shortcomings, and reduction in project costs. Those are the benefits you will cheat yourself out of by keeping “those guys” at arm’s length and continuing to try to function in traditional roles while modern business and the consumer is changing around you. “Intelligence is the ability to adapt to change.” –Stephen Hawking @mikestilesPhoto: istockphoto

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• Oracle Releases New Mainframe Re-Hosting in Oracle Tuxedo 11g

  - by Jason Williamson

  I'm excited to say that we've released our next generation of Re-hosting in 11g. In fact I'm doing some hands-on labs now for our Systems Integrators in Italy in a couple of weeks and targeting Latin America next month. If you are an SI, or Rehosting firm and are looking to become an Oracle Partner or get a better understanding of Tuxedo and how to use the workbench for rehosting...drop me a line. Oracle Tuxedo Application Runtime for CICS and Batch 11g provides a CICS API emulation and Batch environment that exploits the full range of Oracle Tuxedo's capabilities. Re-hosted applications run in a multi-node, grid environment with centralized production control. Also, enterprise integration of CICS application services benefits from an open and SOA-enabled framework. Key features include: CICS Application Runtime: Can run IBM CICS applications unchanged in an application grid, which enables the distribution of large workloads across multiple processors and nodes. This simplifies CICS administration and can scale to over 100,000 users and over 50,000 transactions per second. 3270 Terminal Server: Protects business users from change through support for tn3270 terminal emulation. Distributed CICS Resource Management: Simplifies deployment and administration by allowing customers to run CICS regions in a distributed configuration. Batch Application Runtime: Provides robust IBM JES-like job management that enables local or remote job submissions. In addition, distributed batch initiators can enable parallelization of jobs and support fail-over, shortening the batch window and helping to meet stringent SLAs. Batch Execution Environment: Helps to run IBM batch unchanged and also supports JCL functionality and all common batch utilities. Oracle Tuxedo Application Rehosting Workbench 11g provides a set of automated migration tools integrated around a central repository. The tools provide high precision which results in very low error rates and the ability to handle large applications. This enables less expensive, low-risk migration projects. Key capabilities include: Workbench Repository and Cataloguer: Ensures integrity of the migrated application assets through full dependency checking. The Cataloguer generates and maintains all relevant meta-data on source and target components. File Migrator: Supports reliable migration of datasets and flat files to an ISAM or Oracle Database 11g. This is done through the automated migration utilities for data unloading, reloading and validation. It also generates logical access functions to shield developers from data repository changes. DB2 Migrator: Similarly, this tool automates the migration of DB2 schema and data to Oracle Database 11g. COBOL Migrator: Supports migration of IBM mainframe COBOL assets (OLTP and Batch) to open systems. Adapts programs for compiler dialects and data access variations. JCL Migrator: Supports migration of IBM JCL jobs to a Tuxedo ART environment, maintaining the flow and characteristics of batch jobs.

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• Cocos3d lighting problem

  - by Parasithe

  I'm currently working on a cocos3d project, but I'm having some trouble with lighting and I have no idea how to solve it. I've tried everything and the lighting is always as bad in the game. The first picture is from 3ds max (the software we used for 3d) and the second is from my iphone app. http://prntscr.com/ly378 http://prntscr.com/ly2io As you can see, the lighting is really bad in the app. I manually add my spots and the ambiant light. Here is all my lighting code : _spot = [CC3Light lightWithName: @"Spot" withLightIndex: 0]; // Set the ambient scene lighting. ccColor4F ambientColor = { 0.9, 0.9, 0.9, 1 }; self.ambientLight = ambientColor; //Positioning _spot.target = [self getNodeNamed:kCharacterName]; _spot.location = cc3v( 400, 400, -600 ); // Adjust the relative ambient and diffuse lighting of the main light to // improve realisim, particularly on shadow effects. _spot.diffuseColor = CCC4FMake(0.8, 0.8, 0.8, 1.0); _spot.specularColor = CCC4FMake(0, 0, 0, 1); [_spot setAttenuationCoefficients:CC3AttenuationCoefficientsMake(0, 0, 1)]; // Another mechansim for adjusting shadow intensities is shadowIntensityFactor. // For better effect, set here to a value less than one to lighten the shadows // cast by the main light. _spot.shadowIntensityFactor = 0.75; [self addChild:_spot]; _spot2 = [CC3Light lightWithName: @"Spot2" withLightIndex: 1]; //Positioning _spot2.target = [self getNodeNamed:kCharacterName]; _spot2.location = cc3v( -550, 400, -800 ); _spot2.diffuseColor = CCC4FMake(0.8, 0.8, 0.8, 1.0); _spot2.specularColor = CCC4FMake(0, 0, 0, 1); [_spot2 setAttenuationCoefficients:CC3AttenuationCoefficientsMake(0, 0, 1)]; _spot2.shadowIntensityFactor = 0.75; [self addChild:_spot2]; I'd really appreciate if anyone would have some tip on how to fix the lighting. Maybe my spots are bad? maybe it's the material? I really have no idea. Any help would be welcomed. I already ask some help on cocos2d forums. I had some answers but I need more help.

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• Oracle Systems and Solutions at OpenWorld Tokyo 2012

  - by ferhat

  Oracle OpenWorld Tokyo and JavaOne Tokyo will start next week April 4th. We will cover Oracle systems and Oracle Optimized Solutions in several keynote talks and general sessions. Full schedule can be found here. Come by the DemoGrounds to learn more about mission critical integration and optimization of complete Oracle stack. Our Oracle Optimized Solutions experts will be at hand to discuss 1-1 several of Oracle's systems solutions and technologies. Oracle Optimized Solutions are proven blueprints that eliminate integration guesswork by combing best in class hardware and software components to deliver complete system architectures that are fully tested, and include documented best practices that reduce integration risks and deliver better application performance. And because they are highly flexible by design, Oracle Optimized Solutions can be implemented as an end-to-end solution or easily adapted into existing environments. Oracle Optimized Solutions, Servers,  Storage, and Oracle Solaris  Sessions, Keynotes, and General Session Talks DAY TIME TITLE Notes Session Wednesday  April 4 9:00 - 11:15 Keynote: ENGINEERED FOR INNOVATION - Engineered Systems Mark Hurd,  President, Oracle Takao Endo, President & CEO, Oracle Corporation Japan John Fowler, EVP of Systems, Oracle Ed Screven, Chief Corporate Architect, Oracle English Session K1-01 11:50 - 12:35 Simplifying IT: Transforming the Data Center with Oracle's Engineered Systems Robert Shimp, Group VP, Product Marketing, Oracle English Session S1-01 15:20 - 16:05 Introducing Tiered Storage Solution for low cost Big Data Archiving S1-33 16:30 - 17:15 Simplifying IT - IT System Consolidation that also Accelerates Business Agility S1-42 Thursday  April 5 9:30 - 11:15 Keynote: Extreme Innovation Larry Ellison, Chief Executive Officer, Oracle English Session K2-01 11:50 - 13:20 General Session: Server and Storage Systems Strategy John Fowler, EVP of Systems, Oracle English Session G2-01 16:30 - 17:15 Top 5 Reasons why ZFS Storage appliance is "The cloud storage" by SAKURA Internet Inc L2-04 16:30 - 17:15 The UNIX based Exa* Performance IT Integration Platform - SPARC SuperCluster S2-42 17:40 - 18:25 Full stack solutions of hardware and software with SPARC SuperCluster and Oracle E-Business Suite  to minimize the business cost while maximizing the agility, performance, and availability S2-53 Friday April 6 9:30 - 11:15 Keynote: Oracle Fusion Applications & Cloud Robert Shimp, Group VP, Product Marketing Anthony Lye, Senior VP English Session K3-01 11:50 - 12:35 IT at Oracle: The Art of IT Transformation to Enable Business Growth English Session S3-02 13:00-13:45 ZFS Storagge Appliance: Architecture of high efficient and high performance S3-13 14:10 - 14:55 Why "Niko Niko doga" chose ZFS Storage Appliance to support their growing requirements and storage infrastructure By DWANGO Co, Ltd. S3-21 15:20 - 16:05 Osaka University: Lower TCO and higher flexibility for student study by Virtual Desktop By Osaka University S3-33 Oracle Developer Sessions with Oracle Systems and Oracle Solaris DAY TIME TITLE Notes LOCATION Friday April 6 13:00 - 13:45 Oracle Solaris 11 Developers D3-03 13:00 - 14:30 Oracle Solaris Tuning Contest Hands-On Lab D3-04 14:00 - 14:35 How to build high performance and high security Oracle Database environment with Oracle SPARC/Solaris English Session D3-13 15:00 - 15:45 IT Assets preservation and constructive migration with Oracle Solaris virtualization D3-24 16:00 - 17:30 The best packaging system for cloud environment - Creating an IPS package D3-34 Follow Oracle Infrared at Twitter, Facebook, Google+, and LinkedIn  to catch the latest news, developments, announcements, and inside views from  Oracle Optimized Solutions.

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• Generate DROP statements for all extended properties

  - by jamiet

  This evening I have been attempting to migrate an existing on-premise database to SQL Azure using the wizard that is built-in to SQL Server Management Studio (SSMS). When I did so I received the following error: The following objects are not supported = [MS_Description] = Extended Property Evidently databases containing extended properties can not be migrated using this particular wizard so I set about removing all of the extended properties – unfortunately there were over a thousand of them so I needed a better way than simply deleting each and every one of them manually. I found a couple of resources online that went some way toward this: Drop all extended properties in a MSSQL database by Angelo Hongens Modifying and deleting extended properties by Adam Aspin Unfortunately neither provided a script that exactly suited my needs. Angelo’s covered extended properties on tables and columns however I had other objects that had extended properties on them. Adam’s looked more complete but when I ran it I got an error: Msg 468, Level 16, State 9, Line 78 Cannot resolve the collation conflict between "Latin1_General_100_CS_AS" and "Latin1_General_CI_AS" in the equal to operation. So, both great resources but I wasn’t able to use either on their own to get rid of all of my extended properties. Hence, I combined the excellent work that Angelo and Adam had provided in order to manufacture my own script which did successfully manage to generate calls to sp_dropextendedproperty for all of my extended properties. If you think you might be able to make use of such a script then feel free to download it from https://skydrive.live.com/redir.aspx?cid=550f681dad532637&resid=550F681DAD532637!16707&parid=550F681DAD532637!16706&authkey=!APxPIQCatzC7BQ8. This script will remove extended properties on tables, columns, check constraints, default constraints, views, sprocs, foreign keys, primary keys, table triggers, UDF parameters, sproc parameters, databases, schemas, database files and filegroups. If you have any object types with extended properties on them that are not in that list then consult Adam’s aforementioned article – it should prove very useful. I repeat here the message that I have placed at the top of the script: /* This script will generate calls to sp_dropextendedproperty for every extended property that exists in your database. Actually, a caveat: I don't promise that it will catch each and every extended property that exists, but I'm confident it will catch most of them! It is based on this: http://blog.hongens.nl/2010/02/25/drop-all-extended-properties-in-a-mssql-database/ by Angelo Hongens. Also had lots of help from this: http://www.sqlservercentral.com/articles/Metadata/72609/ by Adam Aspin Adam actually provides a script at that link to do something very similar but when I ran it I got an error: Msg 468, Level 16, State 9, Line 78 Cannot resolve the collation conflict between "Latin1_General_100_CS_AS" and "Latin1_General_CI_AS" in the equal to operation. So I put together this version instead. Use at your own risk. Jamie Thomson 2012-03-25 */ Hope this is useful to someone! @Jamiet

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• Algorithm for spreading labels in a visually appealing and intuitive way

  - by mac

  Short version Is there a design pattern for distributing vehicle labels in a non-overlapping fashion, placing them as close as possible to the vehicle they refer to? If not, is any of the method I suggest viable? How would you implement this yourself? Extended version In the game I'm writing I have a bird-eye vision of my airborne vehicles. I also have next to each of the vehicles a small label with key-data about the vehicle. This is an actual screenshot: Now, since the vehicles could be flying at different altitudes, their icons could overlap. However I would like to never have their labels overlapping (or a label from vehicle 'A' overlap the icon of vehicle 'B'). Currently, I can detect collisions between sprites and I simply push away the offending label in a direction opposite to the otherwise-overlapped sprite. This works in most situations, but when the airspace get crowded, the label can get pushed very far away from its vehicle, even if there was an alternate "smarter" alternative. For example I get: B - label A -----------label C - label where it would be better (= label closer to the vehicle) to get: B - label label - A C - label EDIT: It also has to be considered that beside the overlapping vehicles case, there might be other configurations in which vehicles'labels could overlap (the ASCII-art examples show for example three very close vehicles in which the label of A would overlap the icon of B and C). I have two ideas on how to improve the present situation, but before spending time implementing them, I thought to turn to the community for advice (after all it seems like a "common enough problem" that a design pattern for it could exist). For what it's worth, here's the two ideas I was thinking to: Slot-isation of label space In this scenario I would divide all the screen into "slots" for the labels. Then, each vehicle would always have its label placed in the closest empty one (empty = no other sprites at that location. Spiralling search From the location of the vehicle on the screen, I would try to place the label at increasing angles and then at increasing radiuses, until a non-overlapping location is found. Something down the line of: try 0°, 10px try 10°, 10px try 20°, 10px ... try 350°, 10px try 0°, 20px try 10°, 20px ...

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• SQL SERVER – Three Puzzling Questions – Need Your Answer

  - by pinaldave

  Last week I had asked three questions on my blog. I got very good response to the questions. I am planning to write summary post for each of three questions next week. Before I write summary post and give credit to all the valid answers. I was wondering if I can bring to notice of all of you this week. Why SELECT * throws an error but SELECT COUNT(*) does not This is indeed very interesting question as not quite many realize that this kind of behavior SQL Server demonstrates out of the box. Once you run both the code and read the explanation it totally makes sense why SQL Server is behaving how it is behaving. Also there is connect item is associated with it. Also read the very first comment by Rob Farley it also shares very interesting detail. Statistics are not Updated but are Created Once This puzzle has multiple right answer. I am glad to see many of the correct answer as a comment to this blog post. Statistics are very important and it really helps SQL Server Engine to come up with optimal execution plan. DBA quite often ignore statistics thinking it does not need to be updated, as they are automatically maintained if proper database setting is configured (auto update and auto create). Well, in this question, we have scenario even though auto create and auto update statistics are ON, statistics is not updated. There are multiple solutions but what will be your solution in this case? When to use Function and When to use Stored Procedure This question is rather open ended question – there is no right or wrong answer. Everybody developer has always used functions and stored procedures. Here is the chance to justify when to use Stored Procedure and when to use Functions. I want to acknowledge that they can be used interchangeably but there are few reasons when one should not do that. There are few reasons when one is better than other. Let us discuss this here. Your opinion matters. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, Readers Contribution, Readers Question, SQL, SQL Authority, SQL Performance, SQL Puzzle, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, SQLAuthority News, SQLServer, T SQL, Technology

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• July, the 31 Days of SQL Server DMO’s – Day 29 (sys.dm_os_buffer_descriptors)

  - by Tamarick Hill

  The sys.dm_os_buffer_descriptors Dynamic Management View gives you a look into the data pages that are currently in your SQL Server buffer pool. Just in case you are not familiar with some of the internals to SQL Server and how the engine works, SQL Server only works with objects that are in memory (buffer pool). When an object such as a table needs to be read and it does not exist in the buffer pool, SQL Server will read (copy) the necessary data page(s) from disk into the buffer pool and cache it. Caching takes place so that it can be reused again and prevents the need of expensive physical reads. To better illustrate this DMV, lets query it against our AdventureWorks2012 database and view the result set. SELECT * FROM sys.dm_os_buffer_descriptors WHERE database_id = db_id('AdventureWorks2012') The first column returned from this result set is the database_id column which identifies the specific database for a given row. The file_id column represents the file that a particular buffer descriptor belongs to. The page_id column represents the ID for the data page within the buffer. The page_level column represents the index level of the data page. Next we have the allocation_unit_id column which identifies a unique allocation unit. An allocation unit is basically a set of data pages. The page_type column tells us exactly what type of page is in the buffer pool. From my screen shot above you see I have 3 distinct type of Pages in my buffer pool, Index, Data, and IAM pages. Index pages are pages that are used to build the Root and Intermediate levels of a B-Tree. A Data page would represent the actual leaf pages of a clustered index which contain the actual data for the table. Without getting into too much detail, an IAM page is Index Allocation Map page which track GAM (Global Allocation Map) pages which in turn track extents on your system. The row_count column details how many data rows are present on a given page. The free_space_in_bytes tells you how much of a given data page is still available, remember pages are 8K in size. The is_modified signifies whether or not a page has been changed since it has been read into memory, .ie a dirty page. The numa_node column represents the Nonuniform memory access node for the buffer. Lastly is the read_microsec column which tells you how many microseconds it took for a data page to be read (copied) into the buffer pool. This is a great DMV for use when you are tracking down a memory issue or if you just want to have a look at what type of pages are currently in your buffer pool. For more information about this DMV, please see the below Books Online link: http://msdn.microsoft.com/en-us/library/ms173442.aspx Follow me on Twitter @PrimeTimeDBA

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• Open World Day 1 Continued

  - by Antony Reynolds

  A Day in the Life of an Oracle OpenWorld Attendee Part II A couple of things I forgot to mention about yesterdays OpenWorld. First I attended a presentation on SOA Suite and Virtualization which explained how Oracle Virtual Assembly Builder (OVAB) can be used to accelerate the deployment of an Enterprise Deployment Guide (EDG) compliant SOA Suite infrastructure.  OVAB provides the ability to introspect a deployed software component such as WebLogic Server, SOA Suite or other components and extract the configuration and package it up for rapid deployment into an Oracle Virtual Machine.  OVAB allows multiple machines to be configured and connections made between the machines and outside resources such as databases.  That by itself is pretty cool and has been available for a while in OVAB.  What is new is that Oracle has done this for an EDG compliant installations and made it available as an OVAB assembly for customers to use, significantly accelerating the deployment of an EDG deployment.  A real help for customers standing up EDG environments, particularly in test, dev and QA environments. The other thing I forgot to mention was the most memorable demo I saw at OpenWorld.  This was done by my co-author Matt Wright who was showcasing the products of his company Rubicon Red.  They showed a really cool application called OneSpot which puts all the information about a single users business processes in one spot!  Apparently a customer suggested the name.  It allows business flows to be defined that map onto events.  As events occur the status of the business flow is updated to reflect the change.  The interface is strongly reminiscent of social media sites and provides a graphical view of business flows.  So how does this differ from BPEL and BPM process flows?  The OneSpot process flow is more like a BAM process flow, it is based on events arriving from multiple sources, and is focused on the clients view of the process, not the actual business process.  This is important because it allows an end user to get a view of where his current business flow is and what actions, if any, are required of him.  This by itself is great, but better still is that OneSpot has a real time updating view of events that have occurred (BAM style no need to refresh the browser).  This means that as new events occur the end user can see them and jump to the business flow or take other appropriate actions.  Under the covers OneSpot makes use of Oracle Human Workflow to provide a forms interface, but this is not the HWF GUI you know!  The HWF GUI screens are much prettier and have more of a social media feel about them due to their use of images and pulling in relevant related information.  If you are at OOW I strongly recommend you visit Matt or John at the Rubicon Red stand and ask, no demand a demo of OneSpot!

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• How do you structure computer science University notes?

  - by Sai Perchard

  I am completing a year of postgraduate study in CS next semester. I am finishing a law degree this year, and I will use this to briefly explain what I mean when I refer to the 'structure' of University notes. My preferred structure for authoring law notes: Word Two columns 0.5cm margins (top, right, bottom, middle, left) Body text (10pt, regular), 3 levels of headings (14/12/10pt, bold), 3 levels of bulleted lists Color A background for cases Color B background for legislation I find that it's crucial to have a good structure from the outset. My key advice to a law student would be to ensure styles allows cases and legislation to be easily identified from supporting text, and not to include too much detail regarding the facts of cases. More than 3 levels of headings is too deep. More than 3 levels of a bulleted list is too deep. In terms of CS, I am interested in similar advice; for example, any strategies that have been successfully employed regarding structure, and general advice regarding note taking. Has latex proved better than Word? Code would presumably need to be stylistically differentiated, and use a monospaced font - perhaps code could be written in TextMate so that it could be copied to retain syntax highlighting? (Are notes even that useful in a CS degree? I am tempted to simply use a textbook. They are crucial in law.) I understand that different people may employ varying techniques and that people will have personal preferences, however I am interested in what these different techniques are. Update Thank you for the responses so far. To clarify, I am not suggesting that the approach should be comparable to that I employ for law. I could have been clearer. The consensus so far seems to be - just learn it. Structure of notes/notes themselves are not generally relevant. This is what I was alluding to when I said I was just tempted to use a textbook. Re the comment that said textbooks are generally useless - I strongly disagree. Sure, perhaps the recommended textbook is useless. But if I'm going to learn a programming language, I will (1) identify what I believe to be the best textbook, and (2) read it. I was unsure if the combination of theory with code meant that lecture notes may be a more efficient way to study for an exam. I imagine that would depend on the subject. A subject specifically on a programming language, reading a textbook and coding would be my preferred approach. But I was unsure if, given a subject containing substantive theory that may not be covered in a single textbook, people may have preferences regarding note taking and structure.

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• How To: Automatically Remove www from a Domain in IIS7

  I recently moved the DevMavens.com site from one server to another and needed to ensure that the www.devmavens.com domain correctly redirected to simply devmavens.com.  This is important for SEO reasons (you dont want multiple domains to refer to the same content) and its generally better to use the shorter URL (www is so 20th century) rather than wasting 4 characters for zero gain. My friend and IIS guru Scott Forsyth pointed me to his blog post on how to set up IIS URL Rewriting.  To get started, you simply install IIS Rewrite from this link using the super awesome Web Platform Installer.  You should get something like this when youre done with the install: If you already have IIS Manager open, you may need to close it and re-open it before you see the URL Rewrite module.  Once you do, you should see it listed for any given Site under the IIS section: Double click on the URL Rewrite icon, and then choose the Add Rule(s) action.  You can simply create a blank rule, and name it Redirect from www to domain.com.  Essentially were following the instructions from Scott Forsyths post, but in reverse since hes showing how to add 4 useless characters to the URL and Im interested in removing them. After adding the name, well set the Match Url sections Using dropdown to Wildcards and specify a pattern of simply * to match anything. In the Conditions section we need to add a new condition with an Input of {HTTP_HOST} such that it should match the pattern www.devmavens.com (replace this with your domain). Ignore the Server Variables section. Set the action to Redirect and the Redirect URL to http://devmavens.com/{R:0} (replace with your domain).  The {R:0} will be replaced with whatever the user had entered.  So if they were going to http://www.devmavens.com/default.aspx theyll now be going to http://devmavens.com/default.aspx. The complete Inbound Rule should look like this: Thats it!  Test it out and make sure you havent accidentally used my exact URLs and started sending all of your users to devmavens.com! :)  Be sure to read Scotts post for more information on how to use regular expressions for your rules, and how to set them up via web.config rather than IIS manager. Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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