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• Faye private pub web sockets Errno::ECONNREFUSED: Connection refused - connect(2)

  - by Rubytastic

  Faye private pub has issues connecting. It works from rails console and from inside application. It fails when called from background process like delayed_job or sidekiq. I have been unable to resolve this issue for some time now, does anyone know why this happens? Errno::ECONNREFUSED: Connection refused - connect(2) /Users/jordan/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/resolv-replace.rb:23:in initialize' /Users/jordan/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/resolv-replace.rb:23:in initialize' /Users/jordan/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/http.rb:878:in open' /Users/jordan/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/http.rb:878:in block in connect' /Users/jordan/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/timeout.rb:52:in timeout' /Users/jordan/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/http.rb:877:in connect' /Users/jordan/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/http.rb:862:in do_start' /Users/jordan/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/http.rb:851:in start' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/private_pub-1.0.3/lib/private_pub.rb:42:in publish_message' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/private_pub-1.0.3/lib/private_pub.rb:29:in publish_to' /srv/books/app/workers/session_reload.rb:16:in perform' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/processor.rb:48:in block (3 levels) in process' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/chain.rb:119:in call' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/chain.rb:119:inblock in invoke' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/newrelic_rpm-3.6.8.168/lib/new_relic/agent/instrumentation/sidekiq.rb:25:in block in call' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/newrelic_rpm-3.6.8.168/lib/new_relic/agent/instrumentation/controller_instrumentation.rb:324:in perform_action_with_newrelic_trace' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/newrelic_rpm-3.6.8.168/lib/new_relic/agent/instrumentation/sidekiq.rb:21:in call' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/chain.rb:121:inblock in invoke' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-failures-0.2.2/lib/sidekiq/failures/middleware.rb:10:in call' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/chain.rb:121:inblock in invoke' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/server/active_record.rb:6:in call' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/chain.rb:121:inblock in invoke' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/server/retry_jobs.rb:62:in call' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/chain.rb:121:inblock in invoke' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/server/logging.rb:11:in block in call' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/logging.rb:22:in with_context' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/server/logging.rb:7:in call' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/chain.rb:121:inblock in invoke' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/chain.rb:124:in call' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/chain.rb:124:ininvoke' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/processor.rb:47:in block (2 levels) in process' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/processor.rb:102:in stats' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/processor.rb:46:in block in process' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/processor.rb:83:in do_defer' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/processor.rb:37:in process' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/celluloid-0.15.2/lib/celluloid/calls.rb:25:in public_send' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/celluloid-0.15.2/lib/celluloid/calls.rb:25:in dispatch' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/celluloid-0.15.2/lib/celluloid/calls.rb:122:in dispatch' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/celluloid-0.15.2/lib/celluloid/actor.rb:322:in block in handle_message' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/celluloid-0.15.2/lib/celluloid/actor.rb:416:in block in task' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/celluloid-0.15.2/lib/celluloid/tasks.rb:55:in block in initialize' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/celluloid-0.15.2/lib/celluloid/tasks/task_fiber.rb:13:in block in create' Processor: dev-air.local:db67c04914cdef80c501043115298f6d-70211452597260

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• Meet our 2009 Oracle Graduates in South Africa

  - by anca.rosu

  Focusing on the broader Oracle community, Oracle South Africa initiated its first skills development programme in May 1988. Since its inception the programme has developed and improved and every year more graduates are taken on board. The Oracle Graduate Programme is made up of specific learning paths designed around customer, partner and Oracle specifications and is structured to meet the urgent skills requirements in the Oracle “economy”. The training programmes have a specific duration and incorporate both theoretical and practical application of Oracle product sets. It is aimed at creating: Meaningful employment for graduates; Learning opportunities for individuals within the organization so that career growth opportunities are exploited to the fullest; Capacity building for small enterprises which is aligned to Oracle’s Enterprise Development Programme Meet our five graduates who joined us in December 2008 and have spent over a year with us! Let’s get their initial feedback on the graduate programme and on their assignment to Jordan. Lector   On the Oracle Graduate Programme: “The Oracle Graduate Programme is an experience of a life time. I would not trade it for anything. It’s challenging and rewarding. I am proud and happy to be in an organization like Oracle” On the assignment in Jordan: "Friendly, welcoming people, world class instructors always willing to go the extra mile. What more can you ask for?"   Lungile On the Oracle Graduate Programme: “I joined Oracle as part of the graduate intake for pre-sales in order to develop my skills and knowledge. Working at Oracle has been an overwhelmingly positive experience as it has encouraged me to progress with my personal development. I am hugely grateful. It has been a great challenge and an awesome opportunity.” On the assignment to Jordan: “Going to Jordan was a great opportunity and the experience of a lifetime. The people were very welcoming and friendly. The culture was totally different from ours - the food, the clothes and the weather. It was an amazingly different experience to work from Sunday to Thursday with Friday and Saturday as the weekend.” Thabo On the Oracle Graduate Programme: “Life is an infinite learning path. I truly value growth. I believe for one to grow, one needs to be challenged to your full potential. The Oracle Graduate Programme offers real growth – and so much more.” On the assignment to Jordan: “I was amazed by the cultural differences. I now understood that to be part of the global community, I must embrace our similarities and understand our differences.”   Albeauty On the Oracle Graduate Programme: “Responsibility, dedication, focus and taking initiative … these are the key points I learned from Oracle. It is such an honour to finally be part of the Oracle family. The graduate programme itself was a great experience as I managed to learn how Oracle operates – it has been the highlight of my year. I believe that my hard work will assist in the growth of the company.” On the Jordan assignment: “A memory worth embracing. Going to Jordan was a great opportunity as I learned a lot with respect to integration between different cultures and getting to adapt to all things different. I, along with almost every other graduate, discovered that Oracle is far more than a database company. Now I know there is far more to the ‘Big Red’ name.” Emmanuel On the Oracle Graduate Programme: “The programme gave me invaluable exposure to the ICT sector and also provided an opportunity to travel, network and exchange ideas with others. The formal training helped me to improve my presentation skills and gave me a better understanding of business etiquette and communication.” On the assignment to Jordan: “It was my first trip abroad. It was a great chance to get to know each other. I had the opportunity to share ideas, share personal stuff as a team. We met experts who gave us superb training in Oracle Technologies. It was great.”   If you have any questions related to this article feel free to contact  [email protected].  You can find our job opportunities via http://campus.oracle.com.   Technorati Tags: Oracle community,South Africa,Graduate Programme,Jordan,Technologies

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• Podcast Show Notes: Evolving Enterprise Architecture

  - by Bob Rhubart

  The latest series of ArchBeat podcast programs grew out of another virtual meet-up, held on March 11. As with previous meet-ups, I sent out a general invitation to the roster of previous ArchBeat panelists to join me on Skype to talk about whatever topic comes up. For this event, Oracle ACE Directors Mike van Alst and Jordan Braunstein  showed up, along with Oracle product manager Jeff Davies.  The result was an impressive and wide-ranging discussion on the evolution of Enterprise Architecture, the role of technology in EA, the impact of social computing, and challenge of having three generations of IT people at work in the enterprise – each with different perspectives on technology. Mike, Jordan, and Jeff talked for more than an hour, and the conversation was so good that slicing and dicing it to meet the time constraints for these podcasts has been a challenge. The first two segments of the conversation are now available. Listen to Part 1 Listen to Part 2 Part 3 will go live next week, and an unprecedented fourth segment will follow. These guys have strong opinions, and while there is common ground, they don’t always agree. But isn’t that what a community is all about? I suspect that you’ll have questions and comments after listening, so I encourage you to reach out to Mike, Jordan, and Jeff  via the following links: Mike van Alst Blog | Twitter | LinkedIn | Business |Oracle Mix | Oracle ACE Profile Jordan Braunstein Blog | Twitter | LinkedIn | Business | Oracle Mix | Oracle ACE Profile Jeff Davies Homepage | Blog | LinkedIn | Oracle Mix (Also check out Jeff’s book: The Definitive Guide to SOA: Oracle Service Bus)   Coming Soon ArchBeat’s microphones were there for the panel discussions at the recent Oracle Technology Network Architect Days in Dallas and Anaheim. Excerpts from those conversations will be available soon. Stay tuned: RSS Technorati Tags: oracle,otn,enterprise architecture,podcast. arch2arch,archbeat del.icio.us Tags: oracle,otn,enterprise architecture,podcast. arch2arch,archbeat

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• Podcast Show Notes: Evolving Enterprise Architecture

  - by Bob Rhubart

  Back in March Oracle ACE Directors Mike van Alst (IT-Eye) and Jordan Braunstein (Visual Integrator Consulting) and Oracle product manager Jeff Davies participated in an ArchBeat virtual meet-up. The resulting conversation quickly turned to the changing nature of enterprise architecture and the various forces driving that change. All four parts of that wide-ranging conversation are now available. Listen to Part 1 Listen to Part 2 Listen to Part 3 Listen to Part 4 As you’ll hear, Mike, Jordan, and Jeff bring unique perspectives and opinions to this very lively conversation. These are three very sharp, very experienced guys, as and you might expect, they don’t always walk in lock-step when it comes to EA. You can learn more about Mike, Jordan, and Jeff – and share your opinions with them -- through the links below: Mike van Alst Blog | Twitter | LinkedIn | Business |Oracle Mix | Oracle ACE Profile Jordan Braunstein Blog | Twitter | LinkedIn | Business | Oracle Mix | Oracle ACE Profile Jeff Davies Homepage | Blog | LinkedIn | Oracle Mix (Also check out Jeff’s book: The Definitive Guide to SOA: Oracle Service Bus) Up Next Next week’s program features highlights from the panel discussion at the Oracle Technology Architect Day event held in Anaheim, CA on May 19. You’ll hear from Oracle ACE Directors Basheer Khan and Floyd Teter, Oracle virtualization expert and former Sun Microsystems principal engineer Jeff Savit, Oracle security analyst Geri Born, and event MC Ralf Dossman, Director of SOA and Middleware in Oracle’s Enterprise Solutions Group. Stay tuned: RSS

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• Loading Wavefront Data into VAO and Render It

  - by Jordan LaPrise

  I have successfully loaded a triangulated wavefront(.obj) into 6 vectors, the first 3 vectors contain the locations for vertices, uv coords, and normals. The last three have the indices stored for each of the faces. I have been looking into using VAO's and VBO's to render, and I'm not quite sure how to load and render the data. One of my biggest concerns is the fact that indexed rendering only allows you to have one array of indices, meaning I somehow have to make all of the first three vectors the same size, the only way I thought of doing this, is to make 3 new vertex's of equal size, and load in the data for each face, but that would completely defeat the purpose of indexing. Any help would be appreciated. Thanks in advance, Jordan

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• Why does deleting from the command line take significantly less time than from a GUI?

  - by Jordan Plahn

  So this is probably the dumbest question you'll read today, but it's something I just wondered about as I was deleting a dozen or so images from my computer. With a quick rm -rf command on the directory's contents, all the images were gone in a snap. When I drag the same dozen or so images to a trash can/recycle ban, it takes sometimes 10 seconds or more. Now I'm sure some of it comes from the overhead of the GUI and such, and some of it may be the fact that the file still "exists" in some form if it's put into the recycle bin, but is there anything else that accounts for such a huge time disparity? Are "rm" and "delete" just such fundamentally different commands so I'm trying to compare apples and oranges? Enlighten me, please!

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• Clear/Remove JavaScript Event Handler

  - by Jordan Terrell

  Greetings all - Given the following HTML fragment: <form id="aspnetForm" onsubmit="alert('On Submit Run!'); return true;"> I need to remove/clear the handler for the onsubmit event and register my own using jQuery or any other flavor of JavaScript usage. Anyone know how to do this? Thanks - Jordan

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• how to get PHP URL

  - by Jordan Pagaduan

  I have a photo gallery and to have there url in there bottom. How can I do that in PHP? the location of file is in http://localhost/jordan pagaduan/user_images...

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• Open pdf in flash player 10

  - by Jordan

  I need to open a PDF in flash player 10. The swf will not be running in a browser and there will not be an adobe reader program on the system. I need to know if its possible to open a PDF without converting it in any way, in the flash player. I've searched google for countless hours and nothing has come up, only conversion software and code to open it in a browser. Thanks, Jordan

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• managing a high traffic media sharing website

  - by Jordan Westerman

  i'm in the process of developing a website that i predict will generate a lot of traffic. the site will be similar to many other sites offering free media streaming: mp3's. we are going to start with a pretty minimal amount of media to share, but the basic idea is that artists will set up a profile page with music they have made available for consumers to visit the page and listen to the music. we are starting with just a handful of artists, but i think that this project will generate more and more artist pages. eventually i'd like to set it up so consumers can create personalized playlists. how can i best prepare server space and bandwidth capabilities? i have a small team of web designers and programmers working on the site, as i am pretty illiterate when it comes to site management. as the ring leader of this organization, i am more or less looking for financial requirements and monthly burn rate estimates. i don't have a ton of capitol to start with, putting together a business plan, but i am seeking investments. i have a game plan to grow fast enough to be successful, and slow enough to manage the financial growth requirements. any questions i may have failed to ask myself? is it realistic to start this project on a shared server, and upgrade? any financial advice you think i can use? i really appreciate any advice given, as this is my first business venture. thank you all in advance. Jordan Westerman D.B.A. Badfish Productions, LLC

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• Graph Theory: How to compute closeness centrality for each node in a set of data?

  - by Jordan

  I'd like to learn how to apply network theory to my own cache of relational data. I'm trying to build a demo of a new way of browsing a music library, using network theory, that I think would make for a very intuitive and useful way of finding the right song at any given time. I have all the data (artists as nodes, similarity from 0 to 1 between each artist and those it is related to) and I can already program, but I don't know how to actually calculate the centrality of a node from that. I've spent a while trying to email different professors at my school but no one seems to know where I can learn this. I hope someone's done something similar. Thanks in advance you guys! ~Jordan

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• How do I properly embed third-party frameworks in my Cocoa application?

  - by Jordan Kay

  I am writing a Cocoa application that makes use of the ParseKit framework (http://www.parsekit.com/). I've included the Framework in the proper folder, added a Copy Files build phase, and added it to the build phase. I can build and launch the application on my Mac. However, when I try to run it on another Mac, it crashes. The Console shows the following error message: dyld: Library not loaded: /Users/Jordan/Files/ParseKit/build/Debug/ParseKit.framework/Versions/A/ParseKit It looks like when the app launches, it is looking for the framework on my local drive. However, the framework is in the Copy Files build phase, so it has been copied into that application's Contents/Frameworks folder. If if the application were looking in this folder, it would be able to load the framework just fine, but for some reason it's looking for it on my local drive on the original Mac (which obviously doesn't exist on the other Mac). What am I doing wrong?

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• PHP mysql select results

  - by Jordan Pagaduan

  <?php $sql = " SELECT e.*, l.counts AS l_counts, l.date AS l_date, lo.counts AS lo_counts, lo.date AS lo_date FROM employee e LEFT JOIN logs l ON l.employee_id = e.employee_id LEFT JOIN logout lo ON lo.employee_id = e.employee_id WHERE e.employee_id =" .(int)$_GET['salary']; $query = mysql_query($sql); $rows = mysql_fetch_array($query); while($countlog = $rows['l_counts']) { echo $countlog; } echo $rows['first_name']; echo $rows['last_name_name']; ?> I got what I want to my first_name and last_name(get only 1 results). The l_counts I wanted to loop that thing but the result is not stop counting until my pc needs to restart. LoL. How can I get the exact result of that? I only need to get the exact results of l_counts. Thank you Jordan Pagaduan

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• Update/Increment a single column on multiple rows at once

  - by Jordan Feldstein

  I'm trying to add rows to a column, keeping the order of the newest column set to one, and all other rows counting up from there. In this case, I add a new row with order=0, then use this query to update all the rows by one. "UPDATE favorits SET order = order+1" However, what happens is that all the rows are updated to the same value. I get a stack of favorites, all with order 6 for example, when it should be one with 1, the next with 2 and so on. How do I update these rows in a way that orders them the way they should be? Thanks, ~Jordan

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• Exception when ASP.NET attempts to delete network file.

  - by Jordan Terrell

  Greetings - I've got an ASP.NET application that is trying to delete a file on a network share. The ASP.NET application's worker process is running under a domain account (confirmed this by looking in TaskManager and by using ShowContexts2.aspx¹). I've been assured by the network admins that the process account is a member of a group that has Modify permissions to the directory that contains the file I'm trying to delete. However, it is unable to do so, and instead I get an exception (changed the file path to all x's): System.Web.HttpUnhandledException: Exception of type 'System.Web.HttpUnhandledException' was thrown. --- System.UnauthorizedAccessException: Access to the path '\xxxxxxx\xxxxxxx\xxxxxxx\xxxxxx.xxx' is denied. Any ideas on how to diagnose/fix this issue? Thanks - Jordan ¹ http://www.leastprivilege.com/ShowContextsNET20Version.aspx

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• is the site www.jordansair.com legit or not?

  - by jacksuabo

  hello.. i wander if the jordan shoes fakes at www.jordansair.com?why the shoes so cheap? and why they can offer all the rare jordan shoes? please give me some advice... thanks!!!

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• tsql replace value on select

  - by Zelter Ady

  I have a column (SERVICE_ID) in my table where I can have only 3 values: 0, 1 and 2. I'd like on select, on displayed result table, to change those value with some english words. select client, SERVICE_ID from customers displays now: -------------------------- | John | 1 | Mike | 0 | Jordan | 1 | Oren | 2 -------------------------- I'd like to change the query to get: -------------------------- | John | QA | Mike | development | Jordan | QA | Oren | management -------------------------- There is any way to do this using only the select?

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• PHP file form question

  - by Jordan Pagaduan

  My Code : <?php function dbAdd($first_name , $image) { //mysql connect database code... mysql_query("INSERT INTO users SET first_name = '".$first_name."', image = '".$image."'"); $mysql_close($sql); } if($_SERVER['REQUEST_METHOD']=='POST') { dbAdd($_POST['first_name'], $_POST['image']); } ?> <form enctype="multipart/form-data" method="post" action=""> First Name : <input type="text" name="first_name" > Image : <input type="file" name="image"> <input type="submit"> </form> The form "file" is to upload. I know that. But I wonder how to get the values so I can put the path of image in the database. The code is already working. The $first_name can already save to the database. Thank you for the answers. Jordan Pagaduan

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• How do you display a list of images, from a folder on hard drive, on ASP.NET website?

  - by Jordan S

  I am trying to make a simple photo gallery website. Using ASP.NET and C#. Right now I don't have a server set up but I am just using the development one that Visual Studio Starts when you make a website project and run it. I have a folder on my hard drive that contains an unknown number of images. I want to write a piece of code that will go through each image and add them to the default webpage. I have tried this code but it doesn't work. What am I doing wrong? Should I be using a ListView control or a DataView or something like that? Do I need to add a virtual directory in order to access the images? If so, how do I to that on this test server? ALSO, how do I set the position and alignment of these pictures? For example, how would I make it so that the pictures are in a line vertically and centered on the webpage? protected void Page_Load(object sender, EventArgs e) { string[] filesindirectory = Directory.GetFiles(@"C:\Users\Jordan\Desktop\Web Images"); int i = 1; foreach (string s in filesindirectory) { Image img = new Image(); img.ID = "image" + i.ToString(); img.ImageUrl = s; img.Visible = true; Page.Controls.Add(img); i++; } }

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• CakePHP, CodeIgniter or Rails for multi-user Tumblr clone?

  - by Jordan

  I'm about to start building a tumblr clone that handles multiple users (so premade clones like Gelato won't cut it) and I'm not sure which framework I'd like to build this is. Right now, I'm only intending to build a prototype. Something I can get a dozen friends on to test the concept and grow to maybe a couple hundred users to prove the market, so I'm not worried about long term scale. My biggest concern right now is quick deployment. I'd like to get from zero to signups in as short a time as possible, with as little customization to the framework of choice as possible. I have experience with PHP, but not Ruby. However, I don't think the learning curve would be too steep so I'm not ruling out rails. I just want the framework that is most appropriate for a system like a multi-user tumblr clone so that I can build it with as little hassle, and as quickly, as possible. If anyone has experience with a similar project, or with these frameworks and can offer an insightful perspective, I'd be very appreciative. Thanks for taking the time to read. Cheers, ~Jordan Feldstein

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• Sql Querying, group relationships

  - by Jordan

  Hi, Suppose I have two tables: Group ( id integer primary key, someData1 text, someData2 text ) GroupMember ( id integer primary key, group_id foreign key to Group.id, someData text ) I'm aware that my SQL syntax is not correct :) Hopefully is clear enough. My problem is this: I want to load a group record and all the GroupMember records associated with that group. As I see it, there are two options. A single query: SELECT Group.id, Group.someData1, Group.someData2 GroupMember.id, GroupMember.someData FROM Group INNER JOIN GroupMember ... WHERE Group.id = 4; Two queries: SELECT id, someData2, someData2 FROM Group WHERE id = 4; SELECT id, someData FROM GroupMember WHERE group_id = 4; The first solution has the advantage of only being one database round trip, but has the disadvantage of returning redundant data (All group data is duplicated for every group member) The second solution returns no duplicate data but involves two round trips to the database. What is preferable here? I suppose there's some threshold such that if the group sizes become sufficiently large, the cost of returning all the redundant data is going to be greater than the overhead involved with an additional database call. What other things should I be thinking about here? Thanks, Jordan

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• Node.js fetching Twitter Streaming API - EADDRNOTAVAIL

  - by Jordan Scales

  I have the following code written in node.js to access to the Twitter Streaming API. If I curl the URL below, it works. However, I cannot get it to work with my code. var https = require('https'); https.request('https://USERNAME:[email protected]/1.1/statuses/sample.json', function(res) { res.on('data', function(chunk) { var d = JSON.parse(chunk); console.log(d); }); }); But I receive the following node.js:201 throw e; // process.nextTick error, or 'error' event on first tick ^ Error: connect EADDRNOTAVAIL at errnoException (net.js:642:11) at connect (net.js:525:18) at Socket.connect (net.js:589:5) at Object.<anonymous> (net.js:77:12) at new ClientRequest (http.js:1073:25) at Object.request (https.js:80:10) at Object.<anonymous> (/Users/jordan/Projects/twitter-stream/app.js:3:7) at Module._compile (module.js:441:26) at Object..js (module.js:459:10) at Module.load (module.js:348:31) If anyone can offer an alternative solution, or explain to me why this doesn't work, I would be very grateful.

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• Unable to install Google Chrome

  - by Jordan

  I receive this in my terminal when I try to install using wget https://dl.google.com/linux/direct/google-chrome-stable_current_i386.deb sudo dpkg -i google-chrome* or sudo dpkg --install /Path/to/chrome.deb I receive Selecting previously unselected package google-chrome-stable. (Reading database ... 146911 files and directories currently installed.) Unpacking google-chrome-stable (from google-chrome-stable_current_i386.deb) ... dpkg: dependency problems prevent configuration of google-chrome-stable: google-chrome-stable depends on xdg-utils (>= 1.0.2). dpkg: error processing google-chrome-stable (--install): dependency problems - leaving unconfigured Processing triggers for man-db ... Processing triggers for bamfdaemon ... Rebuilding /usr/share/applications/bamf.index... Processing triggers for desktop-file-utils ... Processing triggers for gnome-menus ... Errors were encountered while processing: google-chrome-stable I then type sudo apt-get install -f And retry installation though it still does not install and I receive the same errors. I have also tried using: sudo apt-get install libxss1 libnspr4-0d libcurl3 Though the above doesn't work either.

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• Unity stuck in 2D mode, Nvidia Quadro graphics "unknown", Nvidia-Current active but not in use

  - by Jordan Lund

  I've seen this problem reported under several questions, but I haven't been able to resolve any of it so I thought I'd bring it all in under one umbrella. I started a new job and was given a Dell Precision M6400 laptop with Nvidia Quadro FX 2700M graphics card. It had a previous version of Ubuntu on it, but nobody had any passwords for it so I wiped the drive and did a fresh install of 11.10 from scratch. I didn't do any updates during installation, preferring to do them after boot. Updates ran fine and the system works... except Unity is in 2D mode. System Settings - Additional Drivers shows that Nvidia-Current is active but not in use. System Settings - System Info shows Graphics Driver Unknown, Experience Standard Nvidia X Server Settings is installed and working, re-writing the xorg.conf did nothing. /usr/lib/nux/unity_support_test -p OpenGL vendor string: NVIDIA Corporation OpenGL renderer string: Quadro FX 2700M/PCI/SSE2 OpenGL version string: 3.3.0 NVIDIA 285.05.09 Not software rendered: yes Not blacklisted: yes GLX fbconfig: yes GLX texture from pixmap: yes GL npot or rect textures: yes GL vertex program: yes GL fragment program: yes GL vertex buffer object: yes GL framebuffer object: yes GL version is 1.4+: yes Unity 3D supported: yes One suggestion was to do a sudo apt-get --purge remove nvidia* and that resulted in a scrambled screen on boot and a non-bootable installation. Pressing the Delete key on boot allowed me to access the recovery console and do a sudo apt-get install nvidia-current, which brought me back to a working, bootable system. Another suggestion was to edit /etc/default/grub and change the line reading "GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" to read "GRUB_CMDLINE_LINUX_DEFAULT="quiet splash vmalloc=192MB" thus allocating more video RAM. I did that, followed by a sudo update-grub and a re-boot. No change. Created a brand new standard user and logged on with that account, no change.

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• Are There Any Examples of Uncle Bob's High-Falutin' Architecture?

  - by Jordan

  I just finished watching this presentation by Uncle Bob (as well as his "Architecture" section of his "Clean Code" videos), but I'm left wondering: Are there any examples out there of applications that implement this Entity-Boundary-Interactor (or Entity-Boundary-Controller) structure? At one point I downloaded the source code to FitNesse (the acceptance testing project he mentions often as an example of not only high test coverage but good architecture, since they were able to defer the decision to not use a database until the very end), and based on a quick glance of it it appears even this project doesn't seem to fit this pattern. Are there any nontrivial examples of this architecture out in the wild, or should I not bother even looking into it and chalk it up as "it would be great if you could get there, but nobody really does"?

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