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  • How to use Sprockets Rails plugin on Heroku?

    - by Kevin
    Hi, I just deployed my Rails app to Heroku, but the Javascripts that were using Sprockets plugin don't work. I understood that, because my Heroku app is read-only, Sprockets won't work. I've found this sprockets_on_heroku plugin that should do the work, but I don't really get how to use it : I added config.gem sprockets in config/environment.rb I added sprockets in my .gems file I pushed these on Heroku and Sprockets was successfully installed I locally ran script/plugin install git://github.com/jeffrydegrande/sprockets_on_heroku.git and the plugin was successfully installed Nothing changed on Heroku, so I tried to install the plugin on Heroku with heroku plugins:install git://github.com/jeffrydegrande/sprockets_on_heroku.git, which returned sprockets_on_heroku installedbut then, a heroku restartor a heroku pluginscommand would return this: ~/.heroku/plugins/sprockets_on_heroku/init.rb:1: uninitialized constant ActionController (NameError) from /opt/local/lib/ruby/gems/1.8/gems/heroku-1.8.3/bin/../lib/heroku/plugin.rb:25:in `load' from /opt/local/lib/ruby/gems/1.8/gems/heroku-1.8.3/bin/../lib/heroku/plugin.rb:25:in `load!' from /opt/local/lib/ruby/gems/1.8/gems/heroku-1.8.3/bin/../lib/heroku/plugin.rb:22:in `each' from /opt/local/lib/ruby/gems/1.8/gems/heroku-1.8.3/bin/../lib/heroku/plugin.rb:22:in `load!' from /opt/local/lib/ruby/gems/1.8/gems/heroku-1.8.3/bin/../lib/heroku/command.rb:14:in `run' from /opt/local/lib/ruby/gems/1.8/gems/heroku-1.8.3/bin/heroku:14 from /opt/local/bin/heroku:19:in `load' from /opt/local/bin/heroku:19 What should I do? Kevin

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  • .NET COM Interop on Windows 7 64Bit gives me a headache

    - by Kevin Stumpf
    Hey guys, .NET COM interop so far always has been working quite nicely. Since I upgraded to Windows 7 I don't get my .NET COM objects to work anymore. My COM object is as easy as: namespace Crap { [ComVisible(true)] [Guid("2134685b-6e22-49ef-a046-74e187ed0d21")] [ClassInterface(ClassInterfaceType.None)] public class MyClass : IMyClass { public MyClass() {} public void Test() { MessageBox.Show("Finally got in here."); } } } namespace Crap { [Guid("1234685b-6e22-49ef-a046-74e187ed0d21")] public interface IMyClass { } } assembly is marked ComVisible as well. I register the assembly using regasm /codebase /tlb "path" registers successfully (admin mode). I tried regasm 32 and 64bit. Both time I get the error "ActiveX component cant create object Crap.MyClass" using this vbscript: dim objReg Set objReg = CreateObject("Crap.MyClass") MsgBox typename(objReg) fuslogvw doesn't give me any hints either. That COM object works perfectly on my Vista 32 Bit machine. I don't understand why I haven't been able to google a solution for that problem.. am I really the only person that ever got into that problem? Looking at OleView I see my object is registered successfully. I am able to create other COM objects as well.. it only does not work with my own ones. Thank you, Kevin

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  • Intern working for Indian NGO - Help with PHP 4, advising staff

    - by Kevin Burke
    Hello, For the past three months I've been working for an Indian NGO (http://sevamandir.org), doing some volunteer work in the field but also trying to improve their website, which needs a ton of work. Recently I've been trying to fix the "subscribe to newsletter" button, which is broken. I used filter_var to filter the email input, but when I tried to test this out I got an error. Then I learned that the web host is still using php version 4.3.2 and register_globals is turned on. I've mentioned that they should upgrade their web host before (they are paying around $50 per year for Rediff Web Hosting, complete with 100MB storage and 1 MySQL database). That would add a lot of complexity for the IT staff of 3, who would have to update everyone's email information (I assume? this is a 250-person organization), and have me find a new web host and teach them about it. The staff isn't that sophisticated about web usage - the head guy still uses IE6, and the website's laid out in tables (they use Dreamweaver WYSIWYG to lay out pages). So I've got two options - use regular expressions to filter the email, which I'm not that skilled at doing (and would be more vulnerable to exploitation after I leave), turn off register globals and then try to teach the staff what I'm doing, or try to get them to upgrade their versions of PHP and MySQL and/or change web host. I'd appreciate some advice. Thanks for your help, Kevin

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  • BackgroundWorker From ASP.Net Application

    - by Kevin
    We have an ASP.Net application that provides administrators to work with and perform operations on large sets of records. For example, we have a "Polish Data" task that an administrator can perform to clean up data for a record (e.g. reformat phone numbers, social security numbers, etc.) When performed on a small number of records, the task completes relatively quickly. However, when a user performs the task on a larger set of records, the task may take several minutes or longer to complete. So, we want to implement these kinds of tasks using some kind of asynchronous pattern. For example, we want to be able to launch the task, and then use AJAX polling to provide a progress bar and status information. I have been looking into using the BackgroundWorker class, but I have read some things online that make me pause. I would love to get some additional advice on this. For example, I understand that the BackgroundWorker will actually use the thread pool from the current application. In my case, the application is an ASP.Net web site. I have read that this can be a problem because when the application recycles, the background workers will be terminated. Some of the jobs I mentioned above may take 3 minutes, but others may take a few hours. Also, we may have several hundred administrators all performing similar operations during the day. Will the ASP.Net application thread pool be able to handle all of these background jobs efficiently while still performing it's normal request processing? So, I am trying to determine if using the BackgroundWorker class and approach is right for our needs. Should I be looking at an alternative approach? Thanks and sorry for such a long post! Kevin

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  • Pass a data.frame column name to a function

    - by Kevin Middleton
    I'm trying to write a function to accept a data.frame (x) and a column from it. The function performs some calculations on x and later returns another data.frame. I'm stuck on the best-practices method to pass the column name to the function. The two minimal examples fun1 and fun2 below produce the desired result, being able to perform operations on x$column, using max() as an example. However, both rely on the seemingly (at least to me) inelegant (1) call to substitute() and possibly eval() and (2) the need to pass the column name as a character vector. fun1 <- function(x, column){ do.call("max", list(substitute(x[a], list(a = column)))) } fun2 <- function(x, column){ max(eval((substitute(x[a], list(a = column))))) } df <- data.frame(A = 1:20, B = rnorm(10)) fun1(df, "B") fun2(df, "B") I would like to be able to call the function as fun(df, B), for example. Other options I have considered but have not tried: Pass column as an integer of the column number. I think this would avoid substitute(). Ideally, the function could accept either. with(x, get(column)), but, even if it works, I think this would still require substitute Make use of formula() and match.call(), neither of which I have much experience with. Subquestion: Is do.call() preferred over eval()? Thanks, Kevin

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  • Sanitizing user input that will later be e-mailed - what should I be worried about?

    - by Kevin Burke
    I'm interning for an NGO in India (Seva Mandir, http://sevamandir.org) and trying to fix their broken "subscribe to newsletter" box. Because the staff isn't very sophisticated and our web host isn't great, I decided to send the relevant data to the publications person via mail() instead of storing it in a MySQL database. I know that it's best to treat user input as malicious, and I've searched the SO forums for posts relevant to escaping user data for sending in a mail message. I know the data should be escaped; what should I be worried about and what's the best way to sanitize the input before emailing it? Form flow: 1. User enters email on homepage and clicks Submit 2. User enters name, address, more information on second page (bad usability, I know, but my boss asked me to) and clicks "Submit" 3. Collect the data via $_POST and email it to the publications editor (and possibly send a confirmation to the subscriber). I am going to sanitize the email in step 2 and the other data in step 3. I appreciate your help, Kevin

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  • How to :update after :success with link_to_remote Rails method?

    - by Kevin
    Hi, I'm trying to get two things done after a user clicks on a link: Delete a div Add another element at the bottom of the page I played with Rails link_to_remote and what I get with the code below is that the element is added before the div is deleted: <%= link_to_remote "&#x2713;", :url => { :controller => :movies, :action => :mark_as_seen, :movie => movie, :render => 'movie' }, :success => "Effect.Fade('movie_#{movie.id}_wrapper', { duration: 0.4 })", :update => "movies", :position => "bottom", :failure => "alert('Ooops! An error occurred.')" %> I tried to put :update and :position in a :complete callback, but nothing happened. And when I put both of them in the :success callback (after Effect.Fade), all I get is a parsing error. Any idea? Thanks, Kevin

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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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  • Consolidation in Exadata

    - by Luis Moreno Campos
    View imageIf you are wondering how can you consolidate different databases inside an Exadata solution, then you can do one or both of the following:- Register and Come to this event: Oracle Enterprise Cloud Summit (10th February 2011)- Read about Oracle's Private Cloud Database Consolitation strategy here.If you are reading this after the event has taken place check out these docs:- White Paper about Instance Caging- Oracle Database Resource Manager technical white paperLMC

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  • Exporting Master Data from Master Data Services

    This white paper describes how to export master data from Microsoft SQL Server Master Data Services (MDS) using a subscription view, and how to import the master data into an external system using SQL Server Integration Services (SSIS). The white paper provides a step-by-step sample for creating a subscription view and an SSIS package. 12 essential tools for database professionalsThe SQL Developer Bundle contains 12 tools designed with the SQL Server developer and DBA in mind. Try it now.

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  • Consolidating Oracle E-Business Suite R12 on Oracle's SPARC SuperCluster

    - by Giri Mandalika
    An Optimized Solution for Oracle E-Business Suite (EBS) R12 12.1.3 is now available on oracle.com.     The Oracle Optimized Solution for Oracle E-Business Suite This solution was centered around the engineered system, SPARC SuperCluster T4-4. Check the business and technical white papers along with a bunch of relevant useful resources online at the above optimized solution page for EBS. What is an Optimized Solution? Oracle's Optimized Solutions are designed, tested and fully documented architectures that are tuned for optimal performance and availability. Optimized solutions are NOT pre-packaged, fully tuned, ready-to-install software bundles that can be downloaded and installed. An optimized solution is usually a well documented architecture that was thoroughly tested on a target platform. The technical white paper details the deployed application architecture along with various observations from installing the application on target platform to its behavior and performance in highly available and scalable configurations. Oracle E-Business Suite R12 Use Case Multiple E-Business Suite R12 12.1.3 application modules were tested in this optimized solution -- Financials (online - oracle forms & web requests), Order Management (online - oracle forms & web req uests) and HRMS (online - web requests & payroll batch). The solution will be updated with additional application modules, when they are available. Oracle Solaris Cluster is responsible for the high availability portion of the solution. Performance Data For the sake of completeness, test results were also documented in the optimized solution white paper. Those test results are mainly for educational purposes only. They give good sense of application behavior under the circumstances the application was tested. Since the major focus of the optimized solution is around highly available and scalable configurations, the application was configured to me et those criteria. Hence the documented test results are not directly comparable to any other E-Business Suite performance test results published by any vendor including Oracle. Such an attempt may lead to skewed, incorrect conclusions. Questions & Requests Feel free to direct your questions to the author of the white papers. If you are a potential customer who would like to test a specific E-Business Suite application module on any non-engineered syste m such as SPARC T4-X or engineered system such as SPARC SuperCluster, contact Oracle Solution Center.

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  • How can I convince IE to honor my explicit instructions to make a table column X pixels wide? [migrated]

    - by AnthonyWJones
    Please consider this small but complete chunk of HTML: <!DOCTYPE html > <html> <head> <title>Test</title> <style type="text/css"> span {overflow:hidden; white-space:nowrap; } td {overflow:hidden; text-overflow:ellipsis} </style> </head> <body> <table cellspacing="0" > <tbody> <tr> <td nowrap="nowrap" style="max-width:30px; width:30px; white-space:nowrap; "><span>column 1</span></td> <td nowrap="nowrap" style="max-width:30px; width:30px; white-space:nowrap; "><span>column 2</span></td> <td nowrap="nowrap" style="max-width:30px; width:30px; white-space:nowrap; "><span>column 3</span></td> </tr> </tbody> </table> </body> </html> If you render the above in Chrome you'll see the effect I'm looking for. However render it in IE8 or 9 the width and/or max-width is ignored. So my question is how do get IE to simply let me specify the width of a cell explicitly? BTW, I've tried various combinations of table-layout:fixed and using colgroup with cols and all sorts, nothing I've tried convinces IE to what I'm clearly asking it to explicitly do? If I had any hair before starting this I wouldn't have any left by now.

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  • Chrome OS is missing or damaged

    - by Ken
    My Google Chrome CR-48 started flaking out/rebooting and finally this message.  This post solved the problem quite easily. http://cr-48.wikispaces.com/Reseat+SSD+Cable Two hints: 1) you need to pull off the rubber feet to get at some screws. 2) the real problem is the little white clip under the cable.  Don’t worry about reseating anything, Just push the cable back on and the little white clip back up to snap in place and hold the cable.

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  • Updated Master Data Services Documentation and Resources

    - by mattande
    (This post was contributed by Reagan Templin, Lead Technical Writer for the MDS Team) With the release of SQL Server 2008 R2, it’s a great time to check out the updated documentation and resources for the release, and for SQL Server 2008 R2 Master Data Services ("MDS") in particular. As you saw in the last post ( New White Papers Available ), there are some great white papers available on MSDN to get you going with MDS. Below you’ll find more information about other updated and newly published content....(read more)

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  • USB 3.0 controller is not recognized by Ubuntu 12.04

    - by BlueWanderer
    I have a Thinkpad E430 notebook, and the intel's USB 3.0 controller can not be recognized by Ubuntu 12.04. The LED on my USB-HDD is white instead of blue (And in Windows 7, it is blue when connected to USB 3.0 port, and is white when connected to 2.0). And the transfer speed is around 25MB/s instead of 65MB/s in Windows 7. I'm not familiar with Linux systems, so I've no clue about what's going wrong. I've searched the web, but got no solution.

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  • New: Deploying Highly Available Monitoring Infrastructure using Oracle Enterprise Manager Cloud Control 12c and Oracle Database Appliance

    - by uwes
    Recently (May 2014) the Solution-in-a-box: Deploying Highly Available Monitoring Infrastructure using Oracle Enterprise Manager Cloud Control 12c and Oracle Database Appliance white paper was published on OTN.This white paper outlines the steps to deploy Oracle Enterprise Manager Cloud Control 12c on the highly available Oracle Database Appliance platform. By reading this document, you will learn more about the process of planning, installing and deploying Oracle Enterprise Manager Cloud Control 12c Release 3 Plug - in Update 1 (12.1.0.3) on Oracle Database Appliance Virtualized Platform.

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  • USB 3.0 controller is not recognized

    - by BlueWanderer
    I have a Thinkpad E430 notebook, and the intel's USB 3.0 controller can not be recognized by Ubuntu 12.04. The LED on my USB-HDD is white instead of blue (And in Windows 7, it is blue when connected to USB 3.0 port, and is white when connected to 2.0). And the transfer speed is around 25MB/s instead of 65MB/s in Windows 7. I'm not familiar with Linux systems, so I've no clue about what's going wrong. I've searched the web, but got no solution.

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  • SSAS processing error: Client unable to establish connection; 08001; Encryption not supported on the client.; 08001

    - by Kevin Shyr
    After getting the cube to successfully deploy and process on Friday, I was baffled on Monday that the newly added dimension caused the cube processing to break.  I then followed the first instinct, discarded all my changes to reverted back to the version on Friday, and had no luck.  The error message (attached below) did not help as I was looking for some kind of SQL service error.  After examining the windows server log and the SQL server log, I just couldn't see anything wrong with it.After swearing for some time, and with the help of going off and working on something else for a while.  I came back to the solution and looked at the data source.  Even though I know I have never changed the provider (the default setup gave me SQL native client), I decided to change it and give OLE DB a try.This simple change allows my cube to process successfully again.  While I don't understand why the same settings that worked last week doesn't work this week, I don't have all the information to say with certainty that nothing has changed in the environment (firewall changes, server updates, etc.).SSAS processing error:<Batch >  <Parallel>    <Process xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ddl2="http://schemas.microsoft.com/analysisservices/2003/engine/2" xmlns:ddl2_2="http://schemas.microsoft.com/analysisservices/2003/engine/2/2" xmlns:ddl100_100="http://schemas.microsoft.com/analysisservices/2008/engine/100/100" xmlns:ddl200="http://schemas.microsoft.com/analysisservices/2010/engine/200" xmlns:ddl200_200="http://schemas.microsoft.com/analysisservices/2010/engine/200/200">      <Object>        <DatabaseID>DWH Sales Facts</DatabaseID>        <CubeID>DWH Sales Facts</CubeID>      </Object>      <Type>ProcessFull</Type>      <WriteBackTableCreation>UseExisting</WriteBackTableCreation>    </Process>  </Parallel></Batch>                Processing Dimension 'Date' completed.                                Errors and Warnings from Response                OLE DB error: OLE DB or ODBC error: A network-related or instance-specific error has occurred while establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and if SQL Server is configured to allow remote connections. For more information see SQL Server Books Online.; 08001; Client unable to establish connection; 08001; Encryption not supported on the client.; 08001.                Errors in the high-level relational engine. A connection could not be made to the data source with the DataSourceID of 'DWH Sales Facts', Name of 'DWH Sales Facts'.                Errors in the OLAP storage engine: An error occurred while the dimension, with the ID of 'Currency', Name of 'Currency' was being processed.                Errors in the OLAP storage engine: An error occurred while the 'Currency Dim ID' attribute of the 'Currency' dimension from the 'DWH Sales Facts' database was being processed.                Internal error: The operation terminated unsuccessfully.                Server: The operation has been cancelled.

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  • How to run Repository Creation Utility (RCU) on 64-bit Linux

    - by Kevin Smith
    I was setting up WebCenter Content (WCC) on a new virtual box running 64-bit Linux and ran into a problem when I tried to run the Repository Creation Utility (RCU). I saw this error when trying to start RCU .../rcuHome/jdk/jre/bin/java: /lib/ld-linux.so.2: bad ELF interpreter: No such file or directory I think I remember running into this before and reading something about RCU only being supported on 32-bit Linux. I decided to try and see if I could get it to run on 64-bit Linux. I saw it was using it's own copy of java (.../rcuHome/jdk/jre/bin/java), so I decided to try and get it to use the 64-bit JRockit I had already installed. I edited the rcu script in rcuHome/bin and replaced JRE_DIR=$ORACLE_HOME/jdk/jre with JRE_DIR=/apps/java/jrockit-jdk1.6.0_29-R28.2.2-4.1.0 Sure enough that fixed it. I was able to run RCU and create the WCC schema.

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  • Setting up a new Silverlight 4 Project with WCF RIA Services

    - by Kevin Grossnicklaus
    Many of my clients are actively using Silverlight 4 and RIA Services to build powerful line of business applications.  Getting things set up correctly is critical to being to being able to take full advantage of the RIA services plumbing and when developers struggle with the setup they tend to shy away from the solution as a whole.  I’m a big proponent of RIA services and wanted to take the opportunity to share some of my experiences in setting up these types of projects.  In late 2010 I presented a RIA Services Master Class here in St. Louis, MO through my firm (ArchitectNow) and the information shared in this post was promised during that presentation. One other thing I want to mention before diving in is the existence of a number of other great posts on this subject.  I’ve learned a lot from many of them and wanted to call out a few of them.  The purpose of my post is to point out some of the gotchas that people get caught up on in the process but I would still encourage you to do as much additional research as you can to find the perfect setup for your needs. Here are a few additional blog posts and articles you should check out on the subject: http://msdn.microsoft.com/en-us/library/ee707351(VS.91).aspx http://adam-thompson.com/post/2010/07/03/Getting-Started-with-WCF-RIA-Services-for-Silverlight-4.aspx Technologies I don’t intend for this post to turn into a full WCF RIA Services tutorial but I did want to point out what technologies we will be using: Visual Studio.NET 2010 Silverlight 4.0 WCF RIA Services for Visual Studio 2010 Entity Framework 4.0 I also wanted to point out that the screenshots came from my personal development box which has a number of additional plug-ins and frameworks loaded so a few of the screenshots might not match 100% with what you see on your own machines. If you do not have Visual Studio 2010 you can download the express version from http://www.microsoft.com/express.  The Silverlight 4.0 tools and the WCF RIA Services components are installed via the Web Platform Installer (http://www.microsoft.com/web/download). Also, the examples given in this post are done in C#…sorry to you VB folks but the concepts are 100% identical. Setting up anew RIA Services Project This section will provide a step-by-step walkthrough of setting up a new RIA services project using a shared DLL for server side code and a simple Entity Framework model for data access.  All projects are created with the consistent ArchitectNow.RIAServices filename prefix and default namespace.  This would be modified to match your companies standards. First, open Visual Studio and open the new project window via File->New->Project.  In the New Project window, select the Silverlight folder in the Installed Templates section on the left and select “Silverlight Application” as your project type.  Verify your solution name and location are set appropriately.  Note that the project name we specified in the example below ends with .Client.  This indicates the name which will be given to our Silverlight project. I consider Silverlight a client-side technology and thus use this name to reflect that.  Click Ok to continue. During the creation on a new Silverlight 4 project you will be prompted with the following dialog to create a new web ASP.NET web project to host your Silverlight content.  As we are demonstrating the setup of a WCF RIA Services infrastructure, make sure the “Enable WCF RIA Services” option is checked and click OK.  Obviously, there are some other options here which have an effect on your solution and you are welcome to look around.  For our example we are going to leave the ASP.NET Web Application Project selected.  If you are interested in having your Silverlight project hosted in an MVC 2 application or a Web Site project these options are available as well.  Also, whichever web project type you select, the name can be modified here as well.  Note that it defaults to the same name as your Silverlight project with the addition of a .Web suffix. At this point, your full Silverlight 4 project and host ASP.NET Web Application should be created and will now display in your Visual Studio solution explorer as part of a single Visual Studio solution as follows: Now we want to add our WCF RIA Services projects to this same solution.  To do so, right-click on the Solution node in the solution explorer and select Add->New Project.  In the New Project dialog again select the Silverlight folder under the Visual C# node on the left and, in the main area of the screen, select the WCF RIA Services Class Library project template as shown below.  Make sure your project name is set appropriately as well.  For the sample below, we will name the project “ArchitectNow.RIAServices.Server.Entities”.   The .Server.Entities suffix we use is meant to simply indicate that this particular project will contain our WCF RIA Services entity classes (as you will see below).  Click OK to continue. Once you have created the WCF RIA Services Class Library specified above, Visual Studio will automatically add TWO projects to your solution.  The first will be an project called .Server.Entities (using our naming conventions) and the other will have the same name with a .Web extension.  The full solution (with all 4 projects) is shown in the image below.  The .Entities project will essentially remain empty and is actually a Silverlight 4 class library that will contain generated RIA Services domain objects.  It will be referenced by our front-end Silverlight project and thus allow for simplified sharing of code between the client and the server.   The .Entities.Web project is a .NET 4.0 class library into which we will put our data access code (via Entity Framework).  This is our server side code and business logic and the RIA Services plumbing will maintain a link between this project and the front end.  Specific entities such as our domain objects and other code we set to be shared will be copied automatically into the .Entities project to be used in both the front end and the back end. At this point, we want to do a little cleanup of the projects in our solution and we will do so by deleting the “Class1.cs” class from both the .Entities project and the .Entities.Web project.  (Has anyone ever intentionally named a class “Class1”?) Next, we need to configure a few references to make RIA Services work.  THIS IS A KEY STEP THAT CAUSES MANY HEADACHES FOR DEVELOPERS NEW TO THIS INFRASTRUCTURE! Using the Add References dialog in Visual Studio, add a project reference from the *.Client project (our Silverlight 4 client) to the *.Entities project (our RIA Services class library).  Next, again using the Add References dialog in Visual Studio, add a project reference from the *.Client.Web project (our ASP.NET host project) to the *.Entities.Web project (our back-end data services DLL).  To get to the Add References dialog, simply right-click on the project you with to add a reference to in the Visual Studio solution explorer and select “Add Reference” from the resulting context menu.  You will want to make sure these references are added as “Project” references to simplify your future debugging.  To reiterate the reference direction using the project names we have utilized in this example thus far:  .Client references .Entities and .Client.Web reference .Entities.Web.  If you have opted for a different naming convention, then the Silverlight project must reference the RIA Services Silverlight class library and the ASP.NET host project must reference the server-side class library. Next, we are going to add a new Entity Framework data model to our data services project (.Entities.Web).  We will do this by right clicking on this project (ArchitectNow.Server.Entities.Web in the above diagram) and selecting Add->New Project.  In the New Project dialog we will select ADO.NET Entity Data Model as in the following diagram.  For now we will call this simply SampleDataModel.edmx and click OK. It is worth pointing out that WCF RIA Services is in no way tied to the Entity Framework as a means of accessing data and any data access technology is supported (as long as the server side implementation maps to the RIA Services pattern which is a topic beyond the scope of this post).  We are using EF to quickly demonstrate the RIA Services concepts and setup infrastructure, as such, I am not providing a database schema with this post but am instead connecting to a small sample database on my local machine.  The following diagram shows a simple EF Data Model with two tables that I reverse engineered from a local data store.   If you are putting together your own solution, feel free to reverse engineer a few tables from any local database to which you have access. At this point, once you have an EF data model generated as an EDMX into your .Entites.Web project YOU MUST BUILD YOUR SOLUTION.  I know it seems strange to call that out but it important that the solution be built at this point for the next step to be successful.  Obviously, if you have any build errors, these must be addressed at this point. At this point we will add a RIA Services Domain Service to our .Entities.Web project (our server side code).  We will need to right-click on the .Entities.Web project and select Add->New Item.  In the Add New Item dialog, select Domain Service Class and verify the name of your new Domain Service is correct (ours is called SampleService.cs in the image below).  Next, click "Add”. After clicking “Add” to include the Domain Service Class in the selected project, you will be presented with the following dialog.  In it, you can choose which entities from the selected EDMX to include in your services and if they should be allowed to be edited (i.e. inserted, updated, or deleted) via this service.  If the “Available DataContext/ObjectContext classes” dropdown is empty, this indicates you have not yes successfully built your project after adding your EDMX.  I would also recommend verifying that the “Generate associated classes for metadata” option is selected.  Once you have selected the appropriate options, click “OK”. Once you have added the domain service class to the .Entities.Web project, the resulting solution should look similar to the following: Note that in the solution you now have a SampleDataModel.edmx which represents your EF data mapping to your database and a SampleService.cs which will contain a large amount of generated RIA Services code which RIA Services utilizes to access this data from the Silverlight front-end.  You will put all your server side data access code and logic into the SampleService.cs class.  The SampleService.metadata.cs class is for decorating the generated domain objects with attributes from the System.ComponentModel.DataAnnotations namespace for validation purposes. FINAL AND KEY CONFIGURATION STEP!  One key step that causes significant headache to developers configuring RIA Services for the first time is the fact that, when we added the EDMX to the .Entities.Web project for our EF data access, a connection string was generated and placed within a newly generated App.Context file within that project.  While we didn’t point it out at the time you can see it in the image above.  This connection string will be required for the EF data model to successfully locate it’s data.  Also, when we added the Domain Service class to the .Entities.Web project, a number of RIA Services configuration options were added to the same App.Config file.   Unfortunately, when we ultimately begin to utilize the RIA Services infrastructure, our Silverlight UI will be making RIA services calls through the ASP.NET host project (i.e. .Client.Web).  This host project has a reference to the .Entities.Web project which actually contains the code so all will pass through correctly EXCEPT the fact that the host project will utilize it’s own Web.Config for any configuration settings.  For this reason we must now merge all the sections of the App.Config file in the .Entities.Web project into the Web.Config file in the .Client.Web project.  I know this is a bit tedious and I wish there were a simpler solution but it is required for our RIA Services Domain Service to be made available to the front end Silverlight project.  Much of this manual merge can be achieved by simply cutting and pasting from App.Config into Web.Config.  Unfortunately, the <system.webServer> section will exist in both and the contents of this section will need to be manually merged.  Fortunately, this is a step that needs to be taken only once per solution.  As you add additional data structures and Domain Services methods to the server no additional changes will be necessary to the Web.Config. Next Steps At this point, we have walked through the basic setup of a simple RIA services solution.  Unfortunately, there is still a lot to know about RIA services and we have not even begun to take advantage of the plumbing which we just configured (meaning we haven’t even made a single RIA services call).  I plan on posting a few more introductory posts over the next few weeks to take us to this step.  If you have any questions on the content in this post feel free to reach out to me via this Blog and I’ll gladly point you in (hopefully) the right direction. Resources Prior to closing out this post, I wanted to share a number or resources to help you get started with RIA services.  While I plan on posting more on the subject, I didn’t invent any of this stuff and wanted to give credit to the following areas for helping me put a lot of these pieces into place.   The books and online resources below will go a long way to making you extremely productive with RIA services in the shortest time possible.  The only thing required of you is the dedication to take advantage of the resources available. Books Pro Business Applications with Silverlight 4 http://www.amazon.com/Pro-Business-Applications-Silverlight-4/dp/1430272074/ref=sr_1_2?ie=UTF8&qid=1291048751&sr=8-2 Silverlight 4 in Action http://www.amazon.com/Silverlight-4-Action-Pete-Brown/dp/1935182374/ref=sr_1_1?ie=UTF8&qid=1291048751&sr=8-1 Pro Silverlight for the Enterprise (Books for Professionals by Professionals) http://www.amazon.com/Pro-Silverlight-Enterprise-Books-Professionals/dp/1430218673/ref=sr_1_3?ie=UTF8&qid=1291048751&sr=8-3 Web Content RIA Services http://channel9.msdn.com/Blogs/RobBagby/NET-RIA-Services-in-5-Minutes http://silverlight.net/riaservices/ http://www.silverlight.net/learn/videos/all/net-ria-services-intro/ http://www.silverlight.net/learn/videos/all/ria-services-support-visual-studio-2010/ http://channel9.msdn.com/learn/courses/Silverlight4/SL4BusinessModule2/SL4LOB_02_01_RIAServices http://www.myvbprof.com/MainSite/index.aspx#/zSL4_RIA_01 http://channel9.msdn.com/blogs/egibson/silverlight-firestarter-ria-services http://msdn.microsoft.com/en-us/library/ee707336%28v=VS.91%29.aspx Silverlight www.silverlight.net http://msdn.microsoft.com/en-us/silverlight4trainingcourse.aspx http://channel9.msdn.com/shows/silverlighttv

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  • System can't sleep, can't shutdown (might be networking related)

    - by Kevin Q
    I speculate it's networking related since I could only shut down my system if I do /etc/init.d/networking stop first. If I tried to put the system to sleep, it disconnect the network then reconnect it automatically, never goes to sleep. I uninstalled the network manager, then /etc/init.d/networking stop will not help shutdown the system anymore. When I boot into the OS, there were some warning about Unknown job:S20acpid,S20network-interface, S20network-manager . I got some advices to do update-rc.d -f to remove all those script, which I am not certain if it's right thing to do. The messages are gone but the problem remains. When I tried to restart, I used to get this message It doesn't seem to be the modem manager since I later removed it. Once upon a time, the fronze shutting down/restarting can be restarted when I presses Ctrl+Alt+Delete, and it says something like networking is stopped externally. If I log in single user mode, and shutdown or reboot, it show this screen I also tried GRUB_CMDLINE_LINUX_DEFAULT = "acpi=force" This is a Ubuntu 12.04 running on Thinkpad T520, not new installation, no such problems occurred before.

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  • Some New .NET Toys (Repost)

    - by Kevin Grossnicklaus
    Last week I was fortunate enough to spend time in Redmond on Microsoft’s campus for the 2011 Microsoft MVP Summit. It was great to hang out with a number of old friends and get the opportunity to talk tech with the various product teams up at Microsoft. The weather wasn’t exactly sunny but Microsoft always does a great job with the Summit and everyone had a blast (heck, I even got to run the bases at SafeCo field) While much of what we saw is covered under NDA, there a ton of great things in the pipeline from Microsoft and many things that are already available (or just became so) that I wasn’t necessarily aware of. The purpose of this post is to share some of the info I learned on resources and tools available to .NET developers today. Please let me know if you have any questions (or if you know of something else cool which might benefit others). Enjoy! Visual Studio 2010 SP1 Microsoft has issued the RTM release of Visual Studio 2010 SP1. You can download the full SP1 on MSDN as of today (March 10th to the general public) and take advantage of such things as: Silverlight 4 is included in the box (as opposed to a separate install) Silverlight 4 Profiling WCF RIA Services SP1 Intellitrace for 64-bit and SharePoint ASP.NET now easily supports IIS Express and SQL CE Want a description of all that’s new beyond the above biased list (which arguably only contains items I think are important)? Check out this KB article. Portable Library Tools CTP Without much fanfare Microsoft has released a CTP of a new add-in to Visual Studio 2010 which simplifies code sharing between projects targeting different runtimes (i.e. Silverlight, WPF, Win7 Phone, XBox). With this Add-In installed you can add a new project of type “Portable Library” and specify which platforms you wish to target. Once that is done, any code added to this library will be limited to use only features which are common to all selected frameworks. Other projects can now reference this portable library and be provided assemblies custom built to their environment. This greatly simplifies the current process of sharing linked files between platforms like WPF and Silverlight. You can find out more about this CTP and how it works on this great blog post. Visual Studio Async CTP Microsoft has also released a CTP of a set of language and framework enhancements to provide a much more powerful asynchronous programming model. Due to the focus on async programming in all types of platforms (and it being the ONLY option in Silverlight and Win7 phone) a move towards a simpler and more understandable model is always a good thing. This CTP (called Visual Studio Async CTP) can be downloaded here. You can read more about this CTP on this blog post. MSDN Code Samples Gallery Microsoft has also launched new code samples gallery on their MSDN site: http://code.msdn.microsoft.com/. This site allows you to easily search for small samples of code related to a particular technology or platform. If a sample of code you are looking for is not found, you can request one via the site and other developers can see your request and provide a sample to the site to suit your needs. You can also peruse requested samples and, if you find a scenario where you can provide value, upload your own sample for the benefit of others. Samples are packaged into the VS .vsix format and include any necessary references/dependencies. By using .vsix as the deployment mechanism, as samples are installed from the site they are kept in your Visual Studio 2010 Samples Gallery and kept for your future reference. If you get a chance, check out the site and see how it is done. Although a somewhat simple concept, I was very impressed with their implementation and the way they went about trying to suit a need. I’ll definitely be looking there in the future as need something or want to share something. MSDN Search Capabilities Another item I learned recently and was not aware of (that might seem trivial to some) is the power of the MSDN site’s search capabilities. Between the Code Samples Gallery described above and the search enhancements on MSDN, Microsoft is definitely investing in their platform to help provide developers of all skill levels the tools and resources they need to be successful. What do I mean by the MSDN search capability and why should you care? If you go to the MSDN home page (http://msdn.microsoft.com) and use the “Search MSDN with Big” box at the very top of the page you will see some very interesting results. First, the search actually doesn’t just search the MSDN library it searches: MSDN Library All Microsoft Blogs CodePlex StackOverflow Downloads MSDN Magazine Support Knowledgebase (I’m not sure it even ends there but the above are all I know of) Beyond just searching all the above locations, the results are formatted very nicely to give some contextual information based on where the result came from. For example, if a keyword search returned results from CodePlex, each row in the search results screen would include a large amount of information specific to CodePlex such as: Looking at the above results immediately tells you everything from the page views to the CodePlex ratings. All in all, knowing that this much information is indexed and available from a single search location will lead me to utilize this as one of my initial searches for development information.

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  • Time to stop using &ldquo;Execute Package Task&rdquo;&ndash; a way to execute package in SSIS catalog taking advantage of the new project deployment model ,and the logging and reporting feature

    - by Kevin Shyr
    I set out to find a way to dynamically call package in SSIS 2012.  The following are 2 excellent blogs I found; I used them heavily.  The code below has some addition to parameter types and message types, but was made essentially derived entirely from the blogs. http://sqlblog.com/blogs/jamie_thomson/archive/2011/07/16/ssis-logging-in-denali.aspx http://www.ssistalk.com/2012/07/24/quick-tip-run-ssis-2012-packages-synchronously-and-other-execution-options/   The code: Every package will be called by a PackageController package.  The packageController is initialized with some information on which package to run and what information to pass in.   The following is the stored procedure called from the “Execute SQL Task”.  Here is the highlight of the stored procedure It takes in packageName, project name, and folder name (folder in SSIS project deployment to SSIS catalog) The stored procedure sets the package variables of the upcoming package execution Execute package in SSIS Catalog Get the status of the execution.  Also, if exists, get the error message’s message_id and store them in the management database. Return value to “Execute SQL Task” to manage failure properly CREATE PROCEDURE [AUDIT].[LaunchPackageExecutionInSSISCatalog]        @PackageName NVARCHAR(255)        , @ProjectFolder NVARCHAR(255)        , @ProjectName NVARCHAR(255)        , @AuditKey INT        , @DisableNotification BIT        , @PackageExecutionLogID INT AS BEGIN TRY        DECLARE @execution_id BIGINT = 0;        -- Create a package execution        EXEC [SSISDB].[catalog].[create_execution]                     @package_name=@PackageName,                     @execution_id=@execution_id OUTPUT,                     @folder_name=@ProjectFolder,                     @project_name=@ProjectName,                     @use32bitruntime=False;          UPDATE [AUDIT].[PackageInstanceExecutionLog] WITH(ROWLOCK)        SET [SSISCatalogExecutionID] = @execution_id        WHERE [PackageInstanceExecutionLogID] = @PackageExecutionLogID          -- this is to set the execution synchronized so that I can check the result in the end        EXEC [SSISDB].[catalog].[set_execution_parameter_value]                     @execution_id,                      @object_type=50,                     @parameter_name=N'SYNCHRONIZED',                     @parameter_value=1; -- true          /********************************************************         ********************************************************              Section: setting parameters                     Source table:  SSISDB.internal.object_parameters              object_type list:                     20: project level variables                     30: package level variables                     50: execution parameter         ********************************************************         ********************************************************/        EXEC [SSISDB].[catalog].[set_execution_parameter_value]                     @execution_id,                      @object_type=30,                     @parameter_name=N'FromParent_AuditKey',                     @parameter_value=@AuditKey; -- true          EXEC [SSISDB].[catalog].[set_execution_parameter_value]                     @execution_id,                      @object_type=30,                     @parameter_name=N'FromParent_DisableNotification',                     @parameter_value=@DisableNotification; -- true          EXEC [SSISDB].[catalog].[set_execution_parameter_value]                     @execution_id,                      @object_type=30,                     @parameter_name=N'FromParent_PackageInstanceExecutionID',                     @parameter_value=@PackageExecutionLogID; -- true        /********************************************************         ********************************************************              Section: setting variables END         ********************************************************         ********************************************************/            /* This section is carried over from example code           I don't see a reason to change them yet        */        -- Set our package parameters        EXEC [SSISDB].[catalog].[set_execution_parameter_value]                     @execution_id,                      @object_type=50,                     @parameter_name=N'DUMP_ON_EVENT',                     @parameter_value=1; -- true          EXEC [SSISDB].[catalog].[set_execution_parameter_value]                     @execution_id,                      @object_type=50,                     @parameter_name=N'DUMP_EVENT_CODE',                     @parameter_value=N'0x80040E4D;0x80004005';          EXEC [SSISDB].[catalog].[set_execution_parameter_value]                     @execution_id,                      @object_type=50,                     @parameter_name=N'LOGGING_LEVEL',                     @parameter_value= 1; -- Basic          EXEC [SSISDB].[catalog].[set_execution_parameter_value]                     @execution_id,                      @object_type=50,                     @parameter_name=N'DUMP_ON_ERROR',                     @parameter_value=1; -- true                              /********************************************************         ********************************************************              Section: EXECUTING         ********************************************************         ********************************************************/        EXEC [SSISDB].[catalog].[start_execution]                     @execution_id;        /********************************************************         ********************************************************              Section: EXECUTING END         ********************************************************         ********************************************************/            /********************************************************         ********************************************************              Section: checking execution result                     Source table:  [SSISDB].[catalog].[executions]              status:                     1: created                     2: running                     3: cancelled                     4: failed                     5: pending                     6: ended unexpectedly                     7: succeeded                     8: stopping                     9: completed         ********************************************************         ********************************************************/        if EXISTS(SELECT TOP 1 1                            FROM [SSISDB].[catalog].[executions] WITH(NOLOCK)                            WHERE [execution_id] = @execution_id                                  AND [status] NOT IN (2, 7, 9)) BEGIN                /********************************************************               ********************************************************                     Section: logging error messages                            Source table:  [SSISDB].[internal].[operation_messages]                     message type:                            10:  OnPreValidate                             20:  OnPostValidate                             30:  OnPreExecute                             40:  OnPostExecute                             60:  OnProgress                             70:  OnInformation                             90:  Diagnostic                             110:  OnWarning                            120:  OnError                            130:  Failure                            140:  DiagnosticEx                             200:  Custom events                             400:  OnPipeline                     message source type:                            10:  Messages logged by the entry APIs (e.g. T-SQL, CLR Stored procedures)                             20:  Messages logged by the external process used to run package (ISServerExec)                             30:  Messages logged by the package-level objects                             40:  Messages logged by tasks in the control flow                             50:  Messages logged by containers (For, ForEach, Sequence) in the control flow                             60:  Messages logged by the Data Flow Task                                    ********************************************************               ********************************************************/                INSERT INTO AUDIT.PackageInstanceExecutionOperationErrorLink                     SELECT @PackageExecutionLogID                                  ,[operation_message_id]                            FROM [SSISDB].[internal].[operation_messages] WITH(NOLOCK)                            WHERE operation_id = @execution_id                                  AND message_type IN (120, 130)                           EXEC [AUDIT].[FailPackageInstanceExecution] @PackageExecutionLogID, 'SSISDB Internal operation_messages found'                GOTO ReturnTrueAsErrorFlag                /********************************************************               ********************************************************                     Section: checking messages END               ********************************************************               ********************************************************/                /* This part is not really working, so now using rowcount to pass status              --DECLARE @PackageErrorMessage NVARCHAR(4000)              --SET @PackageErrorMessage = @PackageName + 'failed with executionID: ' + CONVERT(VARCHAR(20), @execution_id)                --RAISERROR (@PackageErrorMessage -- Message text.              --     , 18 -- Severity,              --     , 1 -- State,              --     , N'check table AUDIT.PackageInstanceExecutionErrorMessages' -- First argument.              --     );              */        END        ELSE BEGIN              GOTO ReturnFalseAsErrorFlagToSignalSuccess        END        /********************************************************         ********************************************************              Section: checking execution result END         ********************************************************         ********************************************************/ END TRY BEGIN CATCH        DECLARE @SSISCatalogCallError NVARCHAR(MAX)        SELECT @SSISCatalogCallError = ERROR_MESSAGE()          EXEC [AUDIT].[FailPackageInstanceExecution] @PackageExecutionLogID, @SSISCatalogCallError          GOTO ReturnTrueAsErrorFlag END CATCH;     /********************************************************  ********************************************************    Section: end result  ********************************************************  ********************************************************/ ReturnTrueAsErrorFlag:        SELECT CONVERT(BIT, 1) AS PackageExecutionErrorExists ReturnFalseAsErrorFlagToSignalSuccess:        SELECT CONVERT(BIT, 0) AS PackageExecutionErrorExists   GO

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  • Control Panel display as a menu does not work upon initial install of a Windows 2008 R2 server

    - by Kevin Shyr
    I've seen this a couple of times now.  Upon initial installation of a Microsoft Windows Server 2008 R2, the control panel is a button.  But if you go to the task bar property >> Start Menu tab >> Customize, you will see the option is "Display as a menu".  Click "Display as a link" and press OK, then come back to the same area and select "Display as a menu" will solve the problem.

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  • Triangle - Rectangle Intersection in 2D

    - by Kevin Boyd
    I had previously asked this for 3D but now I changed my strategy and would like to do the intersection in 2D. The Rectangle is axis aligned and will always be in a fixed position, and has a constant shape and size, basically I want to clip the red areas of the triangles that extend outside the bounds of the rectangle The triangles could be in any position, shape or size, I my code I have a loop where I check the triangles one by one however I am still clueless about the math. I have identified 5 cases of triangle rectangle intersection as shown here. How do I find the intersection points of the triangle and the rectangle?

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