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  • Which browsers support font embedding.

    - by jonhobbs
    I've been reading about the @font-face rule and trying to work out if it's worth using it in a project to render "franklin gothic medium" for title instead of something like sIfr. I figured that for browsers that don't support it I could make it fall back on Arial. The thing is that I'm having trouble getting a definitive answer about which browsers support embedding fonts in this way. So far I've worked out the IE does, but doesn't support .ttf files. Other browsers I'm not sure. If anyone could point me towards some kinf of compatibility chart that would be great. Jon

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  • Basic Android Layout Question

    - by jonhobbs
    Hi, I'm new to android but I've been working my way through the tutoials. Still trying to get my head round layouts in a non-html world and was wondering how to achieve the following.... 1) I'd like to set a tiled background to fill the screen behind the whole activity 2) I'd like to place a graphic and a button underneath it centred in the middle of the screen. 3) When the user clicks the button I'd like to start a new activity and presumably I have to do something to the current activity so the user can use the back button to get back to it. Sorry for the newbie question. Jon

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  • Where in memory are stored nullable types?

    - by Ondrej Slinták
    This is maybe a follow up to question about nullable types. Where exactly are nullable value types (int?...) stored in memory? First I thought it's clear enough, as Nullable<T> is struct and those are value types. Then I found Jon Skeet's article "Memory in .NET", which says: Note that a value type variable can never have a value of null - it wouldn't make any sense, as null is a reference type concept, meaning "the value of this reference type variable isn't a reference to any object at all". I am little bit confused after reading this statement. So let's say I have int? a = null;. As int is normally a value type, is it stored somehow inside struct Nullable<T> in stack (I used "normally" because I don't know what happens with value type when it becomes nullable)? Or anything else happens here - perhaps in heap?

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  • Does .NET have a linker?

    - by Water Cooler v2
    From Jon Skeet's blog: What does the following comment mean? // The line below only works when linked rather than // referenced, as otherwise you need a cast. // The compiler treats it as if it both takes and // returns a dynamic value. string value = com.MakeMeDynamic(10); I understand what referencing an assembly is. You may reference it when compiling the program files either using the /ref: switch at the command line or you may add a statically reference to the assembly in Visual Studio. But how do you link to an assembly in .NET? Does he mean, load the assembly using Reflection (Assembly.LoadFile())? Or, the Win32 API LoadLibrary()? Or, does .NET have a linker that I have never heard of?

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  • Database Table design for Weekdays and Values

    - by Ved
    Guys, I would love to here your ideas on this. I am creating a table which will store weekly shift hours for employees. for example: Jon works 9:00am tp 9:00pm Monday , 10:00 AM to 5:00PM on Tuseday etc.... How should i go on designing this table. I thought of 2 options. (1) For every record I can have two lines for AM and PM and have columns for Monday to Sunday ID | ParentID | Type | Monday | Tuseday ......Sunday 1 | 1 | AM | 9:00 | 9:00 12:00 2 | 1 | PM | 9:00 | 5:00 02:00 3 | 2 | AM | 10:00 | 4 | 2 | PM | 10:00 | (2) I can save Preference in XML format in one column ID | Info 1 | |Hours|Monday|9:00 AM - 9:00PM|Monday|Tuseday........|Hours Any better ideas ? Thanks

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  • How do I know if I'm iterating on the last item of the collection?

    - by Camilo Martin
    I want to do something different on the last KeyValuePair of the Dictionary I'm iterating on. For Each item In collection If ItsTheLastItem DoX() Else DoY() End If Next Is this possible? Edit: As Jon correctly remarks, Dictionaries are not the kind of thing that's sorted, so I should mention that I only want to do this when displaying results to the user, and it doesn't matter if later on the last item is different. In another note, I'll use my own answer but I'll accept the most upvoted one after I check back in some hours.

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  • Raising hard limit on RLIMIT_NOFILE system-wide on Linux

    - by jonswar
    We need to raise RLIMIT_NOFILE when running memcached, as we're hitting the default hard limit (1024). However, raising a hard limit requires root, and for various reasons we don't want to have to run memcached or its containing shell as root. Right now we happily run it as a non-root user. Is there a way to raise the hard limit for RLIMIT_NOFILE system-wide, so that we can continue to run memcached as non-root and simply raise the soft limit? This is RedHat Linux with 2.6 kernel. Thanks! Jon

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  • [Java]Queue in while loop, cannot modify the value?

    - by javaLearner.java
    This is my code: Iterator it = queue.iterator(); while(it.hasNext()){ random = randNumber(1,2); if(random == 1){ queue.poll(); } else { queue.add("new"); queue.poll(); } } It gives me: Exception in thread "test" java.util.ConcurrentModificationException at java.util.LinkedList$ListItr.checkForComodification(LinkedList.java:761) at java.util.LinkedList$ListItr.next(LinkedList.java:696) Edit @Jon Skeet: What I want to do is: I have a queue list in, let say the size is 10, lets say: a,b,c,d ... j Generate a number between 1 and 2. if 1, pull (remove the top element) else if 2 add new element I will stop the loop until I added 3 new elements

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  • ASP MVC Creating Form Rows Dynamically

    - by Jonathan Stowell
    Hi Guys, I haven't even attempted this yet and am creating this question for advice really. I have a strongly typed page which receives a form model composed of several components. It is to create a mitigating circumstance (MC) for a student at a university for my final year project. A MC can be composed of the initial problem, assessment extensions, and I use a multi select box to allow the user to select staff retrieved from the database which are able to view the MC once created. The thing is I feel that a student could be granted many assignment extensions for one problem. I am wander if it is possible to include a button/image on the form which when clicked will create a new assessment extension object, and duplicate the form components to set the values for the object? This would all need to occur without any page refreshes. Any advice, or links to good tutorials would be appreciated. I have so far been unable to find any suitable examples. Thanks, Jon

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  • How to decide between a method or event?

    - by Wil
    I read something ages ago I think by Jon Skeet (which I can't find now) saying that in IL, all events get converted to methods... it was before I understood C# and did not understand it all, but if that is (or even if it isn't) the gist of it.... In a purely hypothetical situation, I was wondering if someone could explain or point me to a resource that says when to use an event over a method? Basically, If I want to have a big red/green status picture which is linked to a Bool field, and I wanted to change it based on the value of the bool, should I: a) Have a method called Changepicture which is linked to the field and changes the state of the bool and the picture. b) Have a get/set part to the field and stick an event in the set part. c) Have a get/set part to the field and stick a method in the set part. d) Other?

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  • WebCenter Content (WCC) Trace Sections

    - by Kevin Smith
    Kyle has a good post on how to modify the size and number of WebCenter Content (WCC) trace files. His post reminded me I have been meaning to write a post on WCC trace sections for a while. searchcache - Tells you if you query was found in the WCC search cache. searchquery - Shows the processing of the query as it is converted form what the user submitted to the end query that will be sent to the database. Shows conversion from the universal query syntax to the syntax specific to the search solution WCC is configured to use. services (verbose) - Lists the filters that are called for each service. This will let you know what filters are available for each service and will also tell you what filters are used by WCC add-on components and any custom components you have installed. The How To Component Sample has a list of filters, but it has not been updated since 7.5, so it is a little outdated now. With each new release WCC adds more filters. If you have a filter that has no code attached to it you will see output like this: services/6    09.25 06:40:26.270    IdcServer-423    Called filter event computeDocName with no filter plugins registered When a WCC add-on or custom component uses a filter you will see trace output like this: services/6    09.25 06:40:26.275    IdcServer-423    Calling filter event postValidateCheckinData on class collections.CollectionValidateCheckinData with parameter postValidateCheckinDataservices/6    09.25 06:40:26.275    IdcServer-423    Calling filter event postValidateCheckinData on class collections.CollectionFilters with parameter postValidateCheckinData As you can see from this sample output it is possible to have multiple code points using the same filter. systemdatabase - Dumps the database call AFTER it executes. This can be somewhat troublesome if you are trying to track down some weird database problems. We had a problem where WCC was getting into a deadlock situation. We turned on the systemdatabase trace section and thought we had the problem database call, but it turned out since it printed out the database call after it was executed we were looking at the database call BEFORE the one causing the deadlock. We ended up having to turn on tracing at the database level to see the database call WCC was making that was causing the deadlock. socketrequests (verbose) - dumps the actual messages received and sent over the socket connection by WCC for a service. If you have gzip enabled you will see junk on the response coming back from WCC. For debugging disable the gzip of the WCC response.Here is an example of the dump of the request for a GET_SEARCH_RESULTS service call. socketrequests/6 09.25 06:46:02.501 IdcServer-6 request: REMOTE_USER=sysadmin.USER-AGENT=Java;.Stel socketrequests/6 09.25 06:46:02.501 IdcServer-6 request: lent.CIS.11g.CONTENT_TYPE=text/html.HEADER socketrequests/6 09.25 06:46:02.501 IdcServer-6 request: _ENCODING=UTF-8.REQUEST_METHOD=POST.CONTEN socketrequests/6 09.25 06:46:02.501 IdcServer-6 request: T_LENGTH=270.HTTP_HOST=CIS.$$$$.NoHttpHead socketrequests/6 09.25 06:46:02.501 IdcServer-6 request: ers=0.IsJava=1.IdcService=GET_SEARCH_RESUL socketrequests/6 09.25 06:46:02.501 IdcServer-6 request: [email protected] socketrequests/6 09.25 06:46:02.501 IdcServer-6 request: calData.SortField=dDocName.ClientEncoding= socketrequests/6 09.25 06:46:02.501 IdcServer-6 request: UTF-8.IdcService=GET_SEARCH_RESULTS.UserTi socketrequests/6 09.25 06:46:02.501 IdcServer-6 request: meZone=UTC.UserDateFormat=iso8601.SortDesc socketrequests/6 09.25 06:46:02.501 IdcServer-6 request: =ASC.QueryText=dDocType..matches..`Documen socketrequests/6 09.25 06:46:02.501 IdcServer-6 request: t`.@end. userstorage, jps - Provides trace details for user authentication and authorization. Includes information on the determination of what roles and accounts a user has access to. In 11g a new trace section, jps, was added with the addition of the JpsUserProvider to communicate with WebLogic Server. The WCC developers decide when to use the verbose option for their trace output, so sometime you need to try verbose to see what different information you get. One of the things I would always have liked to see if the ability to turn on verbose output selectively for individual trace sections. When you turn on verbose output you get it for all trace sections you have enabled. This can quickly fill up your trace files with a lot of information if you have the socket trace section turned on.

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  • Silverlight Cream for January 14, 2011 -- #1027

    - by Dave Campbell
    In this Issue: Sigurd Snørteland, Yochay Kiriaty, WindowsPhoneGeek(-2-), Jesse Liberty(-2-), Kunal Chowdhury, Martin Krüger(-2-), Jonathan Cardy. Above the Fold: Silverlight: "Image Viewer using a GridSplitter control" Martin Krüger WP7: "Implementing WP7 ToggleImageControl from the ground up: Part1" WindowsPhoneGeek VS2010 Templates: "MVVM Project Templates for Visual Studio 2010" Jonathan Cardy From SilverlightCream.com: BabySmash7 - a WP7 children's game (source code included) Sigurd Snørteland not only brings Scott Hanselman's Baby Smash to WP7, but he's delivering the source to us as well as discussion of the app. Windows Push Notification Server Side Helper Library Yochay Kiriaty has a tutorial up on Push Notification... not explaining them, but a discussion of a WP7 Push Recipe that provides an easy way for sending all 3 kinds of push notification messages currently supported. Implementing WP7 ToggleImageControl from the ground up: Part1 WindowsPhoneGeek has a great 2-part series up on building a useful WP7 custom control -- a ToggleImage control... this part 1 is definition, deciding on Visual states, etc... buckle up... this is good stuff Implementing WP7 ToggleImageControl from the ground up: Part2 Part 2 in WindowsPhoneGeek's series is also up and where the real fun lives -- implementing the behavior of the control... and the source is available at the end of this post. The Full Stack #5 – Entity Framework Code First Jesse Liberty has episode 5 of the "Full Stack" series he and Jon Galloway are doing and are discussing Entity Framework Code First. Windows Phone From Scratch #18 – MVVM Light Toolkit Soup To Nuts 3 Jesse Liberty also has part 3 of his MVVMLight and WP7 post up and is digging into messaging in this one... for example view <--> ViewModel communication. Exploring Ribbon Control for Silverlight (Part - 1) Kunal Chowdhury has part 1 of a series up on using the Silverlight Ribbon Control from DevComponents... lots of information and a great intro to a great control. Image Viewer using a GridSplitter control Martin Krüger has a very nice picture viewer up as a demo and code available that simply uses the GridSplitter to implement tha aperture... check it out. How to: Gentle animation of a magnify effect Martin Krüger's latest is a take-off on a prior post he links to called 'just for fun' in which he smoothly animates a magnify effect... just very cool animation... explanation and source. MVVM Project Templates for Visual Studio 2010 Jonathan Cardy has a couple resources you probably wanna grab... two MVVM project templates for VS2010... one WPF and one Silverlight 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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  • Plan Operator Tuesday round-up

    - by Rob Farley
    Eighteen posts for T-SQL Tuesday #43 this month, discussing Plan Operators. I put them together and made the following clickable plan. It’s 1000px wide, so I hope you have a monitor wide enough. Let me explain this plan for you (people’s names are the links to the articles on their blogs – the same links as in the plan above). It was clearly a SELECT statement. Wayne Sheffield (@dbawayne) wrote about that, so we start with a SELECT physical operator, leveraging the logical operator Wayne Sheffield. The SELECT operator calls the Paul White operator, discussed by Jason Brimhall (@sqlrnnr) in his post. The Paul White operator is quite remarkable, and can consume three streams of data. Let’s look at those streams. The first pulls data from a Table Scan – Boris Hristov (@borishristov)’s post – using parallel threads (Bradley Ball – @sqlballs) that pull the data eagerly through a Table Spool (Oliver Asmus – @oliverasmus). A scalar operation is also performed on it, thanks to Jeffrey Verheul (@devjef)’s Compute Scalar operator. The second stream of data applies Evil (I figured that must mean a procedural TVF, but could’ve been anything), courtesy of Jason Strate (@stratesql). It performs this Evil on the merging of parallel streams (Steve Jones – @way0utwest), which suck data out of a Switch (Paul White – @sql_kiwi). This Switch operator is consuming data from up to four lookups, thanks to Kalen Delaney (@sqlqueen), Rick Krueger (@dataogre), Mickey Stuewe (@sqlmickey) and Kathi Kellenberger (@auntkathi). Unfortunately Kathi’s name is a bit long and has been truncated, just like in real plans. The last stream performs a join of two others via a Nested Loop (Matan Yungman – @matanyungman). One pulls data from a Spool (my post – @rob_farley) populated from a Table Scan (Jon Morisi). The other applies a catchall operator (the catchall is because Tamera Clark (@tameraclark) didn’t specify any particular operator, and a catchall is what gets shown when SSMS doesn’t know what to show. Surprisingly, it’s showing the yellow one, which is about cursors. Hopefully that’s not what Tamera planned, but anyway...) to the output from an Index Seek operator (Sebastian Meine – @sqlity). Lastly, I think everyone put in 110% effort, so that’s what all the operators cost. That didn’t leave anything for me, unfortunately, but that’s okay. Also, because he decided to use the Paul White operator, Jason Brimhall gets 0%, and his 110% was given to Paul’s Switch operator post. I hope you’ve enjoyed this T-SQL Tuesday, and have learned something extra about Plan Operators. Keep your eye out for next month’s one by watching the Twitter Hashtag #tsql2sday, and why not contribute a post to the party? Big thanks to Adam Machanic as usual for starting all this. @rob_farley

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  • Roll your own free .NET technical conference

    - by Brian Schroer
    If you can’t get to a conference, let the conference come to you! There are a ton of free recorded conference presentations online… Microsoft TechEd Let’s start with the proverbial 800 pound gorilla. Recent TechEds have recorded the majority of presentations and made them available online the next day. Check out presentations from last month’s TechEd North America 2012 or last week’s TechEd Europe 2012. If you start at http://channel9.msdn.com/Events/TechEd, you can also drill down to presentations from prior years or from other regional TechEds (Australia, New Zealand, etc.) The top presentations from my “View Queue”: Damian Edwards: Microsoft ASP.NET and the Realtime Web (SignalR) Jennifer Smith: Design for Non-Designers Scott Hunter: ASP.NET Roadmap: One ASP.NET – Web Forms, MVC, Web API, and more Daniel Roth: Building HTTP Services with ASP.NET Web API Benjamin Day: Scrum Under a Waterfall NDC The Norwegian Developer Conference site has the most interesting presentations, in my opinion. You can find the videos from the June 2012 conference at that link. The 2011 and 2010 pages have a lot of presentations that are still relevant also. My View Queue Top 5: Shay Friedman: Roslyn... hmmmm... what? Hadi Hariri: Just ‘cause it’s JavaScript, doesn’t give you a license to write rubbish Paul Betts: Introduction to Rx Greg Young: How to get productive in a project in 24 hours Michael Feathers: Deep Design Lessons ØREDEV Travelling on from Norway to Sweden... I don’t know why, but the Scandinavians seem to have this conference thing figured out. ØREDEV happens each November, and you can find videos here and here. My View Queue Top 5: Marc Gravell: Web Performance Triage Robby Ingebretsen: Fonts, Form and Function: A Primer on Digital Typography Jon Skeet: Async 101 Chris Patterson: Hacking Developer Productivity Gary Short: .NET Collections Deep Dive aspConf - The Virtual ASP.NET Conference Formerly known as “mvcConf”, this one’s a little different. It’s a conference that takes place completely on the web. The next one’s happening July 17-18, and it’s not too late to register (It’s free!). Check out the recordings from February 2011 and July 2010. It’s two years old and talks about ASP.NET MVC2, but most of it is still applicable, and Jimmy Bogard’s Put Your Controllers On a Diet presentation is the most useful technical talk I have ever seen. CodeStock Videos from the 2011 edition of this Tennessee conference are available. Presentations from last month’s 2012 conference should be available soon here. I’m looking forward to watching Matt Honeycutt’s Build Your Own Application Framework with ASP.NET MVC 3. UserGroup.tv User Group.tv was founded in January of 2011 by Shawn Weisfeld, with the mission of providing User Group content online for free. You can search by date, group, speaker and category tags. My View Queue Top 5: Sergey Rathon & Ian Henehan: UI Test Automation with Selenium Rob Vettor: The Repository Pattern Latish Seghal: The .NET Ninja’s Toolbelt Amir Rajan: Get Things Done With Dynamic ASP.NET MVC Jeffrey Richter: .NET Nuggets – Houston TechFest Keynote

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  • VirtualBox image SOA Suite &amp; BPM Suite 11.1.1.6.0 & Your feedback?

    - by JuergenKress
    The integration PM team is very pleased to announce the release of a new version of our pre-configured SOA/BPM VirtualBox image for testing and evaluation. This VirtualBox appliance contains a fully configured, ready-to-use SOA/BPM/Webcenter 11.1.1.6.0 installation. All you need is to install Oracle VM VirtualBox on your desktop/laptop and import the SOA/BPM appliance and you are ready to try out SOA Suite and BPM Suite -- no installation and configuration required! The following software is installed in this VritualBox image: Oracle Enterprise Linux (64-bit) EL 5 Update 5 Oracle XE Database 11.2.0 Oracle SOA Suite 11.1.1.6.0 (includes Service Bus) Oracle BPM Suite 11.1.1.6.0 Oracle Webcenter Content (Enterprise Content Management) 11.1.1.6.0 Oracle Webcenter Suite 11.1.1.6.0 Oracle JDeveloper 11.1.1.6.0 JRockit R28.2.0-79-146777-1.6.0_29s Sun Java SDK 1.6.0_29-b11 If you want to try it out, please go to the Pre-built Virtual Machine for SOA Suite and BPM Suite 11g OTN page for detailed instructions on downloading and importing the VirtualBox image. Jon Petter Hjulstad published the first impression at his blog Twitter & LinkedIn We have been waiting for the new VirtualBox Image for a long time, and finally it is here. The appliance has improved in many ways since last release, so it has been worth waiting for. Both the appliance itself and the documentation is excellent. It is evident that Oracle has listened to feedback on the previous release, and I think the developer VMs are useful. Especially the adoption of new patchsets and versions (ex when 12c will be available) will gain a lot from quick getting hands-on experiences. This VirtualBox appliance is a multipurpose image which can be used in different domain configurations. The image has a number of pre-configured domains that you can use depending on your need. The image can be set up so that it requires use of as few resources as possible, you can for instance easily disable B2B if you do not need it, or you can shut down the desktop console and save 600MB. It is important to say that this image is not for production purposes. Read the full article SOA & BPM Partner Community For regular information on Oracle SOA Suite become a member in the SOA & BPM Partner Community for registration please visit  www.oracle.com/goto/emea/soa (OPN account required) If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Mix ForumTechnorati Tags: SOA Suite Image,VirtualBox,BPM suite Image,SOA Specialization award,SOA Community,Oracle SOA,Oracle BPM,BPM Community,OPN,Jürgen Kress

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  • June 23, 1983: First Successful Test of the Domain Name System [Geek History]

    - by Jason Fitzpatrick
    Nearly 30 years ago the first Domain Name System (DNS) was tested and it changed the way we interacted with the internet. Nearly impossible to remember number addresses became easy to remember names. Without DNS you’d be browsing a web where numbered addresses pointed to numbered addresses. Google, for example, would look like http://209.85.148.105/ in your browser window. That’s assuming, of course, that a numbers-based web every gained enough traction to be popular enough to spawn a search giant like Google. How did this shift occur and what did we have before DNS? From Wikipedia: The practice of using a name as a simpler, more memorable abstraction of a host’s numerical address on a network dates back to the ARPANET era. Before the DNS was invented in 1983, each computer on the network retrieved a file called HOSTS.TXT from a computer at SRI. The HOSTS.TXT file mapped names to numerical addresses. A hosts file still exists on most modern operating systems by default and generally contains a mapping of the IP address 127.0.0.1 to “localhost”. Many operating systems use name resolution logic that allows the administrator to configure selection priorities for available name resolution methods. The rapid growth of the network made a centrally maintained, hand-crafted HOSTS.TXT file unsustainable; it became necessary to implement a more scalable system capable of automatically disseminating the requisite information. At the request of Jon Postel, Paul Mockapetris invented the Domain Name System in 1983 and wrote the first implementation. The original specifications were published by the Internet Engineering Task Force in RFC 882 and RFC 883, which were superseded in November 1987 by RFC 1034 and RFC 1035.Several additional Request for Comments have proposed various extensions to the core DNS protocols. Over the years it has been refined but the core of the system is essentially the same. When you type “google.com” into your web browser a DNS server is used to resolve that host name to the IP address of 209.85.148.105–making the web human-friendly in the process. Domain Name System History [Wikipedia via Wired] What is a Histogram, and How Can I Use it to Improve My Photos?How To Easily Access Your Home Network From Anywhere With DDNSHow To Recover After Your Email Password Is Compromised

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  • Sustainability Activities at Oracle OpenWorld

    - by Evelyn Neumayr
    Close to 50,000 participants will come to San Francisco for Oracle OpenWorld and JavaOne events, held September 30-October 4, 2012 at Moscone Center. Oracle is very conscious of the impact that these events have on the environment and, as part of its ongoing commitment to sustainability, has developed a sustainable event program-now in its fifth year-that aims to maximize positive benefits and minimize negative impacts in a variety of ways. Click here for more details. At the Oracle OpenWorld conference, there will be many sessions and even a hands-on lab which discuss the sustainability solutions that Oracle provides for our customers. I wanted to highlight a few of those sessions here so if you will be at Oracle OpenWorld, you can make sure to attend them. One of the most compelling sessions promises to be our “Eco-Enterprise Innovation Awards and the Business Case for Sustainability” session on Wednesday, October 3 from 10:15 a.m. to 11:15 a.m. in Moscone West 3005. Oracle Chairman of the Board Jeff Henley, Chief Sustainability Officer Jon Chorley, and other Oracle executives will honor select customers with Oracle's Eco-Enterprise Innovation award. This award recognizes customers and their respective partners who rely on Oracle products to support their green business practices in order to reduce their environmental impact, while improving business efficiencies and reducing costs. Another interesting session is the “Tracking, Reporting, and Reducing Environmental Impact with Oracle Solutions” which occurs on Monday, October 1 from 4:45 p.m. to 5:45 p.m. in Moscone West Room 2022. This session covers Oracle’s overall sustainability strategy as well as Oracle Environmental Accounting and Reporting (EA&R), which leverages Oracle ERP and BI solutions for accurate, efficient tracking of energy, emissions, and other environmental data. If you want more details, make sure to visit the hands-on lab titled “Oracle Environmental Accounting & Reporting for Integrated Sustainability Reporting”. This hour-long lab will take place on Tuesday, October 2 at 5:00 p.m. in the Marriott Marquis Hotel-Nob Hill CD. Here you can learn how to use Oracle EA&R to collect sustainability-related data in an efficient and reliable manner as part of existing business processes in Oracle E-Business Suite or JD Edwards Enterprise One. Register for this hands-on lab here.  

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  • C# 5: At last, async without the pain

    - by Alex.Davies
    For me, the best feature in Visual Studio 11 is the async and await keywords that come with C# 5. I am a big fan of asynchronous programming: it frees up resources, in particular the thread that a piece of code needs to run in. That lets that thread run something else, while waiting for your long-running operation to complete. That's really important if that thread is the UI thread, or if it's holding a lock because it accesses some data structure. Before C# 5, I think I was about the only person in the world who really cared about asynchronous programming. The trouble was that you had to go to extreme lengths to make code asynchronous. I would forever be writing methods that, instead of returning a value, accepted an extra argument that is a "continuation". Then, when calling the method, I'd have to pass a lambda in to it, which contained all the stuff that needed to happen after the method finished. Here is a real snippet of code that is in .NET Demon: m_BuildControl.FilterEnabledForBuilding(     projects,     enabledProjects = m_OutOfDateProjectFinder.FilterNeedsBuilding(         enabledProjects,         newDirtyProjects =         {             // Mark any currently broken projects as dirty             newDirtyProjects.UnionWith(m_BrokenProjects);             // Copy what we found into the set of dirty things             m_DirtyProjects = newDirtyProjects;             RunSomeBuilds();         })); It's just obtuse. Who puts a lambda inside a lambda like that? Well, me obviously. But surely enabledProjects should just be the return value of FilterEnabledForBuilding? And newDirtyProjects should just be the return value of FilterNeedsBuilding? C# 5 async/await lets you write asynchronous code without it looking so stupid. Here's what I plan to change that code to, once we upgrade to VS 11: var enabledProjects = await m_BuildControl.FilterEnabledForBuilding(projects); var newDirtyProjects = await m_OutOfDateProjectFinder.FilterNeedsBuilding(enabledProjects); // Mark any currently broken projects as dirty newDirtyProjects.UnionWith(m_BrokenProjects); // Copy what we found into the set of dirty things m_DirtyProjects = newDirtyProjects; RunSomeBuilds(); Much easier to read! But how is this the same code? If we were on the UI thread, doesn't the UI thread have to block while FilterEnabledForBuilding runs? No, it doesn't, and that's the magic of the await keyword! It cuts your method up into its constituent pieces, much like I did manually with lambdas before. When you run it, only the piece up to the first await actually runs. The rest is passed to FilterEnabledForBuilding as a continuation, which will get called back whenever that method is finished. In the meantime, our thread returns, and can go back to making the UI responsive, or whatever else threads do in their spare time. This is actually a massive simplification, and if you're interested in all the gory details, and speed hacks that the await keyword actually does for you, I recommend Jon Skeet's blog posts about it.

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  • What is the best VM for developing WPF apps from within OS X?

    - by MarqueIV
    All of my machines are Macs (Mac Pro, MacBook Pro, MacBook Air and Mac Mini (and Apple TV 2.0 too! :) ) but for my day-job, I develop .NET/WPF applications. Normally I just boot into Boot Camp and develop that way, which of course works great, but there are times when I need to simultaneously get to things on my Mac-side of the equation, so I've bought both VMware 3.1 and Parallels 6. Both work, however, even on my Mac Pro where I paid to upgrade to the better video cards (the NVidia 8600s I think vs. the stock ATI cards) the WPF performance bites!! Now this confuses me since both boast that they support not only hardware-accelerated OpenGL 2.1, but also hardware-accelerated DirectX 9 (VMware even allegedly supports DirectX 10!) via their respective virtual drivers and both can run 3D games just fine, even in a window. But even the simple act of resizing a WPF window that has a tiled background results in some HIDEOUS repainting and resizing behaviors. It's damn near closer to what you'd expect over RDP let alone a software-only renderer (forget accelerated hardware completely!) So... can anyone please tell me WTF WPF is doing differently? More importantly, how can I speed up the WPF performance? Should I switch to VirtualBox that also has support for DirectX? Or am I just gonna have to 'byte' the bullet (sorry... had to. So I like puns! Thank Jon Stewart!) and continue using Boot Camp?

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  • Debian Server wont reboot from script

    - by Littlejon
    I have a script that is run to backup a server via Rsync, after that script is run I want the server to reboot. My script is run as root from the Crontab at 3am in the morning. #!/bin/bash HOST="email" RSYNC_OPTS="-a -v -v --progress --stats --delete" RSYNC_DEST="10.0.0.10::$HOST" BACKUP_LIST="/etc /home /root" TIMESTAMP="/timestamp-bkup-start.chk" TIMESTAMP2="/timestamp-bkup-stop.chk" touch $TIMESTAMP rsync $RSYNC_OPTS $TIMESTAMP $RSYNC_DEST for BACKUP_ITEM in $BACKUP_LIST; do rsync $RSYNC_OPTS $BACKUP_ITEM $RSYNC_DEST done /etc/init.d/zimbra stop sleep 60s rsync $RSYNC_OPTS /opt $RSYNC_DEST touch $TIMESTAMP2 rsync $RSYNC_OPTS $TIMESTAMP2 $RSYNC_DEST echo `date +%Y%m%d%H%M` >> /var/log/reset reboot # $# shows number of args passed # $1 to access first variable #if [ $# -eq 1 ]; then # if [ $1 = "withreboot" ]; then # echo "rebooting..."; # echo `date +%Y%m%d%H%M` >> /var/log/reset # /sbin/reboot # fi #fi I have tried using init 6 rather then reboot. I have tried /sbin/reboot. I also have another basic script that just echos to the reset log and runs reboot without issue. It is just with the script above the server wont restart. If anyone has any theories that would be great as I have run out of idea. Thanks, Jon

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  • Application error when drawing to SurfaceView

    - by DKDiveDude
    I'm am doing a simple coding attempt trying to draw on a SurfaceView created on my main.xml layout. I can change background color and display an icon fine, but when I try to draw I get an error. I am a newbie so obvious I am missing something, please lent a helping hint, thanks! main.xml <?xml version="1.0" encoding="utf-8"?> <SurfaceView android:id="@+id/Paper" android:layout_height="fill_parent" android:layout_width="fill_parent"> </SurfaceView> and code here; package com.example.SurfaceViewTest; import android.app.Activity; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.os.Bundle; import android.view.SurfaceHolder; import android.view.SurfaceView; public class SurfaceViewTest extends Activity implements SurfaceHolder.Callback { private SurfaceView mSurfaceView; private SurfaceHolder mSurfaceHolder; private Paint paint; private Canvas canvas; Bitmap mDrawing; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mSurfaceView = (SurfaceView) this.findViewById(R.id.Paper); mSurfaceHolder = mSurfaceView.getHolder(); mSurfaceHolder.addCallback(this); mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { // TODO Auto-generated method stub } @Override public void surfaceCreated(SurfaceHolder holder) { mSurfaceView.setBackgroundColor(Color.rgb(0, 255, 0)); //mSurfaceView.setBackgroundResource(R.drawable.icon); canvas = holder.lockCanvas(null); mDrawing = Bitmap.createBitmap(100, 100, Bitmap.Config.RGB_565); canvas.setBitmap(mDrawing); paint = new Paint(); paint.setColor(Color.rgb(255, 255,255)); canvas.drawLine(1,1,200,300, paint); holder.unlockCanvasAndPost(canvas); } @Override public void surfaceDestroyed(SurfaceHolder holder) { // TODO Auto-generated method stub } }

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  • Ubuntu 8.04 wont reboot from script

    - by Littlejon
    I have a script that is run to backup a server via Rsync, after that script is run I want the server to reboot. My script is run as root from the Crontab at 3am in the morning. #!/bin/bash HOST="email" RSYNC_OPTS="-a -v -v --progress --stats --delete" RSYNC_DEST="10.0.0.10::$HOST" BACKUP_LIST="/etc /home /root" TIMESTAMP="/timestamp-bkup-start.chk" TIMESTAMP2="/timestamp-bkup-stop.chk" touch $TIMESTAMP rsync $RSYNC_OPTS $TIMESTAMP $RSYNC_DEST for BACKUP_ITEM in $BACKUP_LIST; do rsync $RSYNC_OPTS $BACKUP_ITEM $RSYNC_DEST done /etc/init.d/zimbra stop sleep 60s rsync $RSYNC_OPTS /opt $RSYNC_DEST touch $TIMESTAMP2 rsync $RSYNC_OPTS $TIMESTAMP2 $RSYNC_DEST echo `date +%Y%m%d%H%M` >> /var/log/reset reboot # $# shows number of args passed # $1 to access first variable #if [ $# -eq 1 ]; then # if [ $1 = "withreboot" ]; then # echo "rebooting..."; # echo `date +%Y%m%d%H%M` >> /var/log/reset # /sbin/reboot # fi #fi I have tried using init 6 rather then reboot. I have tried /sbin/reboot. I also have another basic script that just echos to the reset log and runs reboot without issue. It is just with the script above the server wont restart. If anyone has any theories that would be great as I have run out of idea. Thanks, Jon

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  • Agile Database Techniques: Effective Strategies for the Agile Software Developer – book review

    - by DigiMortal
       Agile development expects mind shift and developers are not the only ones who must be agile. Every chain is as strong as it’s weakest link and same goes also for development teams. Agile Database Techniques: Effective Strategies for the Agile Software Developer by Scott W. Ambler is book that calls also data professionals to be part of agile development. Often are DBA-s in situation where they are not part of application development and later they have to survive large set of applications that all use databases different way. Of course, only some of these applications are not problematic when looking what database server has to do to serve them. I have seen many applications that rape database servers because developers have no clue what is going on in database (~3K queries to database per web application request – have you seen something like this? I have…) Agile Database Techniques covers some object and database design technologies and gives suggestions to development teams about topics they need help or assistance by DBA-s. The book is also good reading for DBA-s who usually are not very strong in object technologies. You can take this book as bridge between these two worlds. I think teams that build object applications that use databases should buy this book and try at least one or two projects out with Ambler’s suggestions. Table of contents Foreword by Jon Kern. Foreword by Douglas K. Barry. Acknowledgments. Introduction. About the Author. Part One: Setting the Foundation. Chapter 1: The Agile Data Method. Chapter 2: From Use Cases to Databases — Real-World UML. Chapter 3: Data Modeling 101. Chapter 4: Data Normalization. Chapter 5: Class Normalization. Chapter 6: Relational Database Technology, Like It or Not. Chapter 7: The Object-Relational Impedance Mismatch. Chapter 8: Legacy Databases — Everything You Need to Know But Are Afraid to Deal With. Part Two: Evolutionary Database Development. Chapter 9: Vive L’ Évolution. Chapter 10: Agile Model-Driven Development (AMDD). Chapter 11: Test-Driven Development (TDD). Chapter 12: Database Refactoring. Chapter 13: Database Encapsulation Strategies. Chapter 14: Mapping Objects to Relational Databases. Chapter 15: Performance Tuning. Chapter 16: Tools for Evolutionary Database Development. Part Three: Practical Data-Oriented Development Techniques. Chapter 17: Implementing Concurrency Control. Chapter 18: Finding Objects in Relational Databases. Chapter 19: Implementing Referential Integrity and Shared Business Logic. Chapter 20: Implementing Security Access Control. Chapter 21: Implementing Reports. Chapter 22: Realistic XML. Part Four: Adopting Agile Database Techniques. Chapter 23: How You Can Become Agile. Chapter 24: Bringing Agility into Your Organization. Appendix: Database Refactoring Catalog. References and Suggested Reading. Index.

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  • Visual Studio 2010 SP1

    - by ScottGu
    Last week we shipped Service Pack 1 of Visual Studio 2010 and the Visual Studio Express Tools.  In addition to bug fixes and performance improvements, SP1 includes a number of feature enhancements.  This includes improved local help support, IntelliTrace support for 64-bit applications and SharePoint, built-in Silverlight 4 Tooling support in the box, unit testing support when targeting .NET 3.5, a new performance wizard for Silverlight, IIS Express and SQL CE Tooling support for web projects, HTML5 Intellisense for ASP.NET, and more.  TFS 2010 SP1 was also released last week, together with a new TFS Project Server Integration Pack and Load Test Feature Pack.  Brian Harry has a good blog post about the TFS updates here. VS 2010 SP1 Download Click here to download and install SP1 for all versions of Visual Studio (including express).  This installer examines what you have installed on your machine, and only downloads the servicing downloads necessary to update them to SP1.  The time it takes to download and update will consequently depend on what all you have installed.  Jon Galloway has a good blog post on tips to speed up the SP1 install by uninstalling unused components. Web Platform Installer Bundles In addition to the core VS 2010 SP1 installer, we have also put together two Web Platform Installer (WebPI) bundles that automate installing SP1 together with additional web-specific components: VS 2010 SP1 WebPI Bundle Visual Web Developer 2010 SP1 WebPI Bundle The above WebPI bundles automate installing: VS 2010/VWD 2010 SP1 ASP.NET MVC 3 (runtime + tools support) IIS 7.5 Express SQL Server Compact Edition 4.0 (runtime + tools support) Web Deployment 2.0 Only the components that are not already installed on your machine will be downloaded when you use the above WebPI bundles.  This means that you can run the WebPI bundle at any time (even if you have already installed SP1 or ASP.NET MVC 3) and not have to worry about wasting time downloading/installing these components again. Earlier this year I did two posts that discussed how to use IIS Express and SQL CE with ASP.NET projects in SP1.  Read the below posts to learn more about how to use them after you run the above bundles: Visual Studio 2010 SP1 and IIS Express Visual Studio 2010 SP1 and SQL CE for ASP.NET The above feature additions work with any web project type – including both ASP.NET Web Forms and ASP.NET MVC. Additional SP1 Notes Two additional notes about VS 2010 SP1: 1) One change we made between RTM and SP1 is that by default Visual Studio now uses software rendering instead of hardware acceleration when running on Windows XP.  We made this change because we’ve seen reports of (often inconsistent) performance issues caused by older video drivers.  Running in software mode eliminates these and delivers consistent speeds.  You can optionally re-enable hardware acceleration with SP1 using Visual Studio’s Tools->Options menu command – we did not remove support for HW acceleration on XP, we simply changed the default setting for it.  Jason Zander has written more details on the change and how to re-enable HW acceleration inside VS here. 2) We have discovered an issue where installing SP1 can cause TSQL intellisense within SQL Server Management Studio 2008 R2 to stop working (typing still works – but intellisense doesn’t show up).  The SQL team is investigating this now and I’ll post an update on how to fix this once more details are known.  Hope this helps, Scott P.S. I am also now using Twitter for quick updates and to share links. Follow me at: twitter.com/scottgu

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  • Oracle Social Network Developer Challenge: TEAM Informatics

    - by Kellsey Ruppel
    Originally posted by Jake Kuramoto on The Apps Lab blog. Here comes another Oracle Social Network Developer Challenge entry, this one courtesy of TEAM Informatics (@teaminformatics). As their name suggests, their entry was a true team effort, featuring the work of Jon Chartrand, Deepthi Sanikommu, Dmitry Shtulman, Raghavendra Joshi, and Daniel Stitely with Wayne Boerger doing the presentation honors. Speaking of the presentation, Wayne’s laptop wouldn’t project onto the plasma we had in the OTN Lounge, but luckily, Noel (@noelportugal) had his iPad and VGA dongle in his backpack of goodies, so they were able to improvise by using the iPad camera to capture Wayne’s demo and project the video to the plasma. Code will find a way. Anyway, TEAM built Do Over, an integration with Atlassian’s JIRA, coincidentally something I’ve chatted with Rich (@rmanalan) about in the past. The basic idea is simple; integrate JIRA issues with Oracle Social Network to expand and centralize the conversation around issue resolution. In Dmitry’s words: We were able to put together a team on fairly short notice and, after batting a few ideas around, decided to pursue an integration with JIRA, an issue and project tracking tool used in-house at TEAM.  After getting to know WebCenter Social, we saw immediate benefits that a JIRA integration could bring, primarily due to the fact that JIRA only allows assignment of an issue to one person at a time.  Integrating Social would allow collaboration and issue resolution to happen right from the JIRA Issue interface. TEAM tackled a very common pain point among developers, i.e. including everyone who needs to be involved in issue resolution into a single thread. If you’ve ever fixed bugs or participated in that process, you’ll know that not everyone has access to the issue resolution system, which makes consolidating discussion time-consuming and fragmented. Why? Because we typically use email as the tool for collaboration. Oracle Social Network allows for all parties involved to work in a single, private and secure conversation, and through its RESTful Public API, information from external systems like JIRA can be brought in for context. TEAM only had time to address half the solution, but given more time, I’m sure they would have made the integration bidirectional, allowing for relevant commentary to be pushed back to JIRA, closing the loop. Here are some screenshot of their integration. #gallery-1 { margin: auto; } #gallery-1 .gallery-item { float: left; margin-top: 10px; text-align: center; width: 33%; } #gallery-1 img { border: 2px solid #cfcfcf; } #gallery-1 .gallery-caption { margin-left: 0; } When Oracle Social Network is released, TEAM will have something they use internally to work on issues, and maybe they’ll even productize their work and add it to the Atlassian Marketplace so that other JIRA users can benefit from the combination of Oracle Social Network and JIRA. Thanks to everyone at TEAM for participating in our challenge. We hope they had a good experience. Look for the details of the other entries this week. Be sure to check out a full recap from Dmitry over on the TEAM blog.

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