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• The Beginner’s Guide to Greasemonkey User Scripts in Firefox

  - by Asian Angel

  Everybody knows that Firefox has add-ons for virtually everything, but if you don’t want to bloat your installation you’ve always got the option of Greasemonkey scripts instead. Here’s a quick primer on how to use them. Getting Started with User Scripts Once you have Greasemonkey installed, managing the extension is really easy. Left click on the status bar icon to turn the extension on/off and right click to access the context menu shown here. Whether you use the Options button in the Add-ons Manager Window or the context menu shown above, both will bring up the Manage User Scripts dialog. At the moment you have a nice clean slate to work with… time to get some scripts added in. The majority of user scripts can be found at two different sites, the first being appropriately named userscripts.org, and you can either browse by tag or search for a script. As you can see here your search for a particular type of script can be quickly narrowed down based on category. There is definitely a lot to choose from. For our example we focused on the “textarea” tag. There were 62 scripts available but we quickly found what we were looking for on the first page. Installing, Managing, & Using Your Scripts When you find a script that you want to install visit the script’s homepage and click on the “Install” button. Note: Link for this script provided below. Once you have clicked on the Install button, Greasemonkey will open up the following installation window. You will be able to view: A summary of what the script does A list of websites that the script is supposed to function on (our example is set for all) View the script source if desired Make a final decision on whether to install the script or cancel the process Right-clicking on our status bar icon shows our new script listed and active. Reopening the Manage User Scripts window shows: Our new script listed in the column on the left The websites/pages included An option to disable the script (can also be done in the context menu) The ability to edit the script The ability to uninstall the script If you choose to edit the script you will be asked to browse for and select a default text editor of your choice (first time only). Once you have selected a text editor you can make any changes desired to the script. We decided to test our new user script on the site. Going to the comment box at the bottom we could easily resize the window as desired. The Comment box definitely got a lot bigger. Conclusion If you prefer to keep the number of extensions to a minimum in your Firefox installation then Greasemonkey and the Userscripts website can easily provide that extra functionality without the bloat. For added auto website script detection goodness see our article on Greasefire. Note: See our article here for specialized How-To Geek User Style Scripts that can be added to Greasemonkey. Links Download the Greasemonkey Extension (Mozilla Add-ons) Install the Textarea & Input Resize User Script Visit the Userscripts.org Website Visit the Userstyles.org Website Similar Articles Productive Geek Tips Enjoy How-To Geek User Style Script GoodnessEnable Multi-Column Google Searches with a User ScriptSearch Alternative Search Engines from within Bing’s Search PageFind User Scripts for Your Favorite Websites the Easy WaySet Up User Scripts in Opera Browser TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Office 2010 reviewed in depth by Ed Bott FoxClocks adds World Times in your Statusbar (Firefox) Have Fun Editing Photo Editing with Citrify Outlook Connector Upgrade Error Gadfly is a cool Twitter/Silverlight app Enable DreamScene in Windows 7

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• Error Handling Examples(C#)

  “The purpose of reviewing the Error Handling code is to assure that the application fails safely under all possible error conditions, expected and unexpected. No sensitive information is presented to the user when an error occurs.” (OWASP, 2011) No Error Handling The absence of error handling is still a form of error handling. Based on the code in Figure 1, if an error occurred and was not handled within either the ReadXml or BuildRequest methods the error would bubble up to the Search method. Since this method does not handle any acceptations the error will then bubble up the stack trace. If this continues and the error is not handled within the application then the environment in which the application is running will notify the user running the application that an error occurred based on what type of application. Figure 1: No Error Handling public DataSet Search(string searchTerm, int resultCount) { DataSet dt = new DataSet(); dt.ReadXml(BuildRequest(searchTerm, resultCount)); return dt; } Generic Error Handling One simple way to add error handling is to catch all errors by default. If you examine the code in Figure 2, you will see a try-catch block. On April 6th 2010 Louis Lazaris clearly describes a Try Catch statement by defining both the Try and Catch aspects of the statement. “The try portion is where you would put any code that might throw an error. In other words, all significant code should go in the try section. The catch section will also hold code, but that section is not vital to the running of the application. So, if you removed the try-catch statement altogether, the section of code inside the try part would still be the same, but all the code inside the catch would be removed.” (Lazaris, 2010) He also states that all errors that occur in the try section cause it to stops the execution of the try section and redirects all execution to the catch section. The catch section receives an object containing information about the error that occurred so that they system can gracefully handle the error properly. When errors occur they commonly log them in some form. This form could be an email, database entry, web service call, log file, or just an error massage displayed to the user.  Depending on the error sometimes applications can recover, while others force an application to close. Figure 2: Generic Error Handling public DataSet Search(string searchTerm, int resultCount) { DataSet dt = new DataSet(); try { dt.ReadXml(BuildRequest(searchTerm, resultCount)); } catch (Exception ex) { // Handle all Exceptions } return dt; } Error Specific Error Handling Like the Generic Error Handling, Error Specific error handling allows for the catching of specific known errors that may occur. For example wrapping a try catch statement around a soap web service call would allow the application to handle any error that was generated by the soap web service. Now, if the systems wanted to send a message to the web service provider every time a soap error occurred but did not want to notify them if any other type of error occurred like a network time out issue. This would be varying tedious to accomplish using the General Error Handling methodology. This brings us to the use case for using the Error Specific error handling methodology.  The Error Specific Error handling methodology allows for the TryCatch statement to catch various types of errors depending on the type of error that occurred. In Figure 3, the code attempts to handle DataException differently compared to how it potentially handles all other errors. This allows for specific error handling for each type of known error, and still allows for error handling of any unknown error that my occur during the execution of the TryCatch statement. Figure 5: Error Specific Error Handling public DataSet Search(string searchTerm, int resultCount) { DataSet dt = new DataSet(); try { dt.ReadXml(BuildRequest(searchTerm, resultCount)); } catch (TimeoutException ex) { // Handle Timeout TimeoutException Only } catch (Exception) { // Handle all Exceptions } return dt; }

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• Understanding Collabnet&rsquo;s LDAP binding

  - by Robert May

  We want to use both subversion usernames and passwords as well as Active Directory for our authentication on our Collabnet subversion server. This has proven to be more of a challenge than we thought, mostly because Collabnet’s documentation is pretty poor. To supplement that documentation, I add my own. The first thing to understand is that the attribute that you specify in the LDAP Login Attribute ONLY applies to lookups done for the user.  It does NOT apply to the LDAP Bind DN field.  Second, know that the debug logs (error is the one you want) don’t give you debug information for the bind DN, just the login attempts.  Third, by default, Active Directory does not allow anonymous binds, so you MUST put in a user that has the authority to query the Active Directory ldap. Because of these items, the values to set in those fields can be somewhat confusing.  You’ll want to have ADSI Edit handy (I also used ldp, which is installed by default on server 2008), since ADSI Edit can help you find stuff in your active directory.  Be careful, you can also break stuff. Here’s what should go into those fields. LDAP Security Level:  Should be set to None LDAP Server Host:  Should be set to the full name of a domain controller in your domain.  For example, dc.mydomain.com LDAP Server Port:  Should be set to 3268.  The default port of 389 will only query that specific server, not the global catalog.  By setting it to 3268, the global catalog will be queried, which is probably what you want. LDAP Base DN:  Should be set to the location where you want the search for users to begin.  By default, the search scope is set to sub, so all child organizational units below this setting will be searched.  In my case, I had created an OU specifically for users for group policies.  My value ended up being:  OU=MyOu,DC=domain,DC=org.   However, if you’re pointing it to the default Users folder, you may end up with something like CN=Users,DC=domain,DC=org (or com or whatever).  Again, use ADSI edit and use the Distinguished Name that it shows. LDAP Bind DN:  This needs to be the Distinguished Name of the user that you’re going to use for binding (i.e. the user you’ll be impersonating) for doing queries.  In my case, it ended up being CN=svn svn,OU=MyOu,DC=domain,DC=org.  Why the double svn, you might ask?  That’s because the first and last name fields are set to svn and by default, the distinguished name is the first and last name fields!  That’s important.  Its NOT the username or account name!  Again, use ADSI edit, browse to the username you want to use, right click and select properties, and then search the attributes for the Distinguished Name.  Once you’ve found that, select it and click View and you can copy and paste that into this field. LDAP Bind Password:  This is the password for the account in the Bind DN LDAP login Attribute: sAMAccountName.  If you leave this blank, uid is used, which may not even be set.  This tells it to use the Account Name field that’s defined under the account tab for users in Active Directory Users and Computers.  Note that this attribute DOES NOT APPLY to the LDAP Bind DN.  You must use the full distinguished name of the bind DN.  This attribute allows users to type their username and password for authentication, rather than typing their distinguished name, which they probably don’t know. LDAP Search Scope:  Probably should stay at sub, but could be different depending on your situation. LDAP Filter:  I left mine blank, but you could provide one to limit what you want to see.  LDP would be helpful for determining what this is. LDAP Server Certificate Verification:  I left it checked, but didn’t try it without it being checked. Hopefully, this will save some others pain when trying to get Collabnet setup. Technorati Tags: Subversion,collabnet

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• 6 Prominent Features of New GMail User Interface

  - by Gopinath

  GMail’s user interface has got a big make over today and the new user interface is available to everyone. We can switch to the new user interface by click on “Switch to the new look” link available at the bottom right of GMail (If you are on IE 6 or similar type of bad browsers, you will not see the option!). I switched to the new user interface as soon I noticed the link and played with it for sometime. In this post I want to share the prominent features of all new GMail interface. 1. All New Conversations Interface GMail’s threaded conversations is a game changing feature when it was first introduced by Google. For  a long time we have not seen much updates to the threaded conversation views. In the new GMail interface, threaded conversation sports a great new look – conversations are always visible in a horizontal fashion as opposed to stack interface of earlier version. When you open a conversation, you get a quick glance of individual thread without expanding the thread. Readability is improved a lot now.  Check image after the break 2. Sender Profile Photos In Email Threads Did you observe the above screenshot of conversations view? It has profile images of the participants in the thread. Identifying person of a thread is much more easy. 3. Advanced Search Box Search is the heart of Google’s business and it’s their flagship technology. GMail’s search interface is enhanced to let you quickly find the required e-mails. Also you can create mail filters from the search box without leaving the screen or opening up a new popup. 4. Gmail Automatically Resizing To Fit Multiple Devices There is no doubt that this is post PC era where people started using more of tablets and big screen smartphones than ever. The new user interface of GMail automatically resizes itself to fit the size of screen seamlessly. 5. HD Images For Your Themes, Sourced from iStockphoto Are you bored with minimalistic GMail interface and the few flashy themes? Here comes GMail HD themes backed by stock photographs sourced from iStockPhoto website. If you have a widescreen HD monitor then decorate your inbox with beautiful themes. 6. Resize Labels & Chat Panels Now you got a splitter between Labels & Chat panel that lets resize their height as you prefer. Also Label panel auto expands its height when you mouse over to show you hidden labels if any. Video – overview of new GMail features This article titled,6 Prominent Features of New GMail User Interface, was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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• Silverlight Cream for March 08, 2011 -- #1056

  - by Dave Campbell

  In this Issue: Joost van Schaik, Manas Patnaik, Kevin Hoffman, Jesse Liberty, Deborah Kurata, Dhananjay Kumar, Dennis Delimarsky, Samuel Jack, Peter Kuhn, WindowsPhoneGeek, and Jfo. Above the Fold: Silverlight: "How I let the trees grow" Peter Kuhn WP7: "Simple Windows Phone 7 / Silverlight drag/flick behavior" Joost van Schaik Shoutouts: SilverlightShow has their top 5 from last week posted, plus the ECOContest is ready to be voted on: SilverlightShow for Feb 28 - March 06, 2011 Drew DeVault is a young man involved with the Microsoft Student Insiders. He gave a WP7 presentation at RMTT and has posted his material: Post-Session: Windows Phone 7 @ RMTT Rui Marinho has an app in the ECO Contest called Forest Findr. is based on the BIng Map Control for silverlight and Sql Spatial data, and helps you find Forests and get geolocated pictures and wikipedia information, and has a post up with a bunch of info on it here: Forest Findr. my entry on the SilverlightShow EcoContest From SilverlightCream.com: Simple Windows Phone 7 / Silverlight drag/flick behavior Joost van Schaik has a behavior that makes *anything* draggable and 'flickable' in WP7 ... read the intro, scroll to the bottom to watch the demo, and then grab up the code... cool stuff, Joost! Data Aggregation Using Presentation Model in RIA and Silverlight 4 Manas Patnaik sent me a link to his blog, and it appears he's got lots of Silverlight goodness out there so you'll be hearing more about him. This first post is on the Presentation Model in RIA and Silverlight 4... good discussion, diagrams and code... good job, Manas! WP7 for iPhone and Android Developers - Advanced UI Kevin Hoffman has part 3 of an ambitious 12-part tutorial series up on WP7 development ... this go-around is concentrating on Advanced UI - Panorama/Pivot controls, DataBinding, ObservableCollections, and Converters... whew! Sterling DB on top of Isolated Storage – 2 Jesse Liberty has part 2 of his Sterling series up... this time setting up the database in App.xaml so it can be used for dealing with tombstoning. Silverlight Charting: Formatting the Tick Marks Deborah Kurata's next chart tutorial is all about showing you how to continue to dress up your charts.. this time by formatting the tick marks... if you don't know what that is... check out the first image in the post. Stored Procedure in WCF Data Service Dhananjay Kumar has a very nice tutorial up on using a stored proc with WCF Data Services... I happen to know someone working on just that at this time. If you have this in mind, here's a step-by-step guide to getting it done. Windows Phone 7 – Episode 5 – Pages Dennis Delimarsky has part 5 of his WP7 tutorial series up and is discussing Pages in this 17 minute video. Unpacking Simon Squared: My mini framework-independent animation library Samuel Jack has not only Open-Sourced the WP7 game he built and blogged about, but he's now explaining some of the structure of the game in posts such as this one about the animation library he wrote that his game is built on. How I let the trees grow Peter Kuhn shares with us the code he used for the tree animation in his ECO Contest entry. There's a lot to learn in this post about performance ... the fully-animated tree has about 20K elements... 5K branches and 20K leaves... check it out. WP7 ToastPrompt in depth WindowsPhoneGeek takes a deep dive into the ToastPrompt control in the Coding4fun Toolkit... everything you need to completely use the control including sample code. Beware the loaded event Jfo talks about another frustration point she had with WP7 development, and that is around the use of the loaded event... read these tips from someone that's been there. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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• WebCenter Innovation Award Winners

  - by Michael Snow

  Of course, here on our WebCenter blog – we’d like to highlight and brag about our great WebCenter winners. The 2012 WebCenter Innovation Award Winners University of Louisville Location: Louisville, KY, USA Industry: Higher Education Fusion Middleware Products: WebCenter Portal, WebCenter Content, JDeveloper, WebLogic, Oracle BI, Oracle IdM University of Louisville is a state supported research university Statewide Informatics Network to improve public health The University of Louisville has implemented WebCenter as part of the LOUI (Louisville Informatics Institute) Initiative, a Statewide Informatics Network, which will improve public healthcare and lower cost through the use of novel technology and next generation analytics, decision support and innovative outcomes-based payment systems. ---------- News Limited Country/Region: Australia Industry: News/Media FMW Products: WebCenter Sites Single platform running websites for 50% of Australia's newspapers News Corp is running half of Australia's newspaper websites on this shared platform powered by Oracle WebCenter Sites and have overtaken their nearest competitors and are now leading in terms of monthly page impressions. At peak they have over 250 editors on the system publishing in real-time.Sites include: www.newsspace.com.au, www.news.com.au, www.theaustralian.com.au and many others ------ Life Technologies Corp. Country/Region: Carlsbad, CA, USAIndustry: Life SciencesFMW Products: WebCenter Portal, SOA Suite Life Technologies Corp. is a global biotechnology tools company dedicated to improving the human condition with innovative life science products. They were awarded an innovation award for their solution utilizing WebCenter Portal for remotely monitoring & repairing biotech instruments. They deployed WebCenter as a portal that accesses Life Technologies cloud based service monitoring system where all customer deployed instruments can be remotely monitored and proactively repaired.  The portal provides alerts from these cloud based monitoring services directly to the customer and to Life Technologies Field Engineers.  The Portal provides insight into the instruments and services customers purchased for the purpose of analyzing and anticipating future customer needs and creating targeted sales and service programs. ----- China Mobile Jiangsu China Mobile Jiangsu is one of the biggest subsidiaries of China Mobile. It has over 25,000 employees and 40 million mobile subscribers. Country/Region: Jiangsu, China Industry: Telecommunications FMW Products: WebCenter Portal, WebCenter Content, JDeveloper, SOA Suite, IdM They were awarded an Innovation Award for their new employee platform powered by WebCenter Portal is designed to serve their 25,000+ employees and help them drive collaboration & productivity. JSMCC (Chian Mobile Jiangsu) Employee Enterprise Portal and Collaboration Platform. It is one of the China Mobile’s most important IT innovation projects. The new platform is designed to serve for JSMCC’s 25000+ employees and to help them improve the working efficiency, changing their traditional working mode to social ways, encouraging employees on business collaboration and innovation. The solution is built on top of Oracle WebCenter Portal Framework and WebCenter Spaces while also leveraging Weblogic Server, UCM, OID, OAM, SES, IRM and Oracle Database 11g. By providing rich collaboration services, knowledge management services, sensitive document protection services, unified user identity management services, unified information search services and personalized information integration capabilities, the working efficiency of JSMCC employees has been greatly improved. Main Functionality : Information portal, office automation integration, personal space, group space, team collaboration with web2.0 services, unified search engine for multiple data sources, document management and protection. SSO for multiple platforms. -------- LADWP – Los Angeles Department for Water and Power Los Angeles Department of Water and Power (LADWP) is the largest public utility company in United States with over 1.6 Million customers. LADWP provides water and power for millions of residential & commercial customers in Southern California. LADWP also bills most of these customers for sanitation services provided by another city department. Country/Region: US – Los Angeles, CA Industry: Public Utility FMW Products: WebCenter Portal, WebCenter Content, JDeveloper, SOA Suite, IdM The new infrastructure consists of: Oracle WebCenter Portal including mobile portal Oracle WebCenter Content for Content Management and Digital Asset Management (DAM) Oracle OAM (IDM, OVD, OAM) integrated with AD for enterprise identity management Oracle Siebel for CRM Oracle DB Oracle SOA Suite for integration of various subsystems and back end systems  The new portal's features include: Complete Graphical redesign based on best practices in UI Design for high usability Customer Self Service implemented through MyAccount (Bill Pay, Payment History, Bill History, Usage Analysis, Service Request Management) Financial Assistance Programs (CRM, WebCenter) Customer Rebate Programs (CRM, WebCenter) Turn On/Off/Transfer of services (Commercial & Residential) Outage Reporting eNotification (SMS, email) Multilingual (English & Spanish) – using WebCenter multi-language support Section 508 (ADA) Compliant Search – Using WebCenter SES (Secured Enterprise Search) Distributed Authorship in WebCenter Content Mobile Access (any Mobile Browser)

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• WebCenter Customer Spotlight: Ancestry.com

  - by me

  Author: Peter Reiser - Social Business Evangelist, Oracle WebCenter  Solution SummaryAncestry.com Inc is the largest for-profit genealogy company in the world and it operates a network of genealogical and historical record websites focused on the U.S. and nine foreign countries, develops and markets genealogical software, and offers a wide array of genealogical related services. As of June 2012, the company provided access to more than 10 billion records, 38 million family trees, and 2 million paying subscribers. Their main business challenges were to improve time to market and agility to respond quickly to fast changing Internet waves while integrating with their existing content (4 PetaByte) and legacy systems. Ancestry.com implemented Oracle WebCenter Sites as their Web Experience Management System for their landing pages and marketing micro sites, added dynamic sections to their existing websites and integrated the existing content and legacy systems through web services. The Ancestry.com landing pages and marketing sites are now managed by the business team without any involvement of engineering resources. Managed content can quickly be added to existing pages without having to refactor the whole page and existing content (4 PetaBytes)  is now served trough Oracle WebCenter Sites without having to migrate from existing systems. Company OverviewAncestry.com Inc is a publicly traded Internet company (NASDAQ: ACOM) based in Provo, Utah, USA. The largest for-profit genealogy company in the world, it operates a network of genealogical and historical record websites focused on the U.S. and nine foreign countries, develops and markets genealogical software, and offers a wide array of genealogical related services. As of June 2012, the company provided access to more than 10 billion records, 38 million family trees, and 2 million paying subscribers. Business ChallengesAncestry main business challenge was to respond quickly to fast changing Internet waves.  Product marketing could not change Web site content without going through development. They needed dedicated developers just to support their marketing efforts. Technical Requirements Support current systems and environments - ASP.NET, MVC.NET, Java, JSP, PHP Scalable and manageable for a world wide network Marketing Requirements Easy to enter content – Without having a degree in HTML Scheduling of content – When is content visible to users Product Requirements Easy to manage content – See when content is out-of-date Rotation of content – Producing new content as old content expires Solution DeployedAncestry implemented  Oracle WebCenter Sites as their Web Experience Management System to manage their landing pages and marketing micro sites. This sites are fully managed by their business team without involvement of any engineering resources. The integration with their existing Web sites is done through Spot Management which allows the ability to add dynamic content to certain sections of a web page. The dynamic content is managed by  Oracle WebCenter Sites. The integration with the existing content (4 PetaBytes!) is done trough  a custom content provider interface which allows to mix existing content with content from  Oracle WebCenter Sites. Business ResultsAncestry.com has achieved following impressive business results: Landing pages and marketing sites are now managed by the business team without any involvement of engineering resources Managed content can quickly be added to existing pages without having to refactor the whole page Provide access to existing content (4 PetaBytes)  without having to migrate from existing systems Additional Information Ancestry Webcast Oracle WebCenter Sites

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• How Can I Start an Incognito/Private Browsing Window from a Shortcut?

  - by Jason Fitzpatrick

  Sometimes you just want to pop the browser open for a quick web search without reloading all your saved tabs; read on as we show a fellow reader how to make a quick private-browsing shortcut. Dear How-To Geek, I came up with a solution to my problem, but I need your help implementing it. I typically have a ton of tabs open in my web browser and, when I need to free up system resources when gaming or using a resource intense application, I shut down the web browser. The problem arises when I find myself needing to do quick web search while the browser is shut down. I don’t want to open it up, load all the tabs, and waste the resources in doing so all for a quick Google search. The perfect solution, it would seem, is to open up one of Chrome’s Incognito windows: it loads separate, it won’t open up all the old tabs, and it’s perfect for a quick Google search. Is there a way to launch Chrome with a single Incognito window open without having to open the browser in the normal mode (and load the bazillion tabs I have sitting there)? Sincerely, Tab Crazy That’s a rather clever work around to your problem. Since you’ve already done the hard work of figuring out the solution you need, we’re more than happy to help you across the finish line. The magic you seek is available via what are known as “command line options” which allow you to add additional parameters and switches onto a command.   By appending the command the Chrome shortcut uses, we can easily tell it to launch in Incognito mode. (And, for other readers following along at home, we can do the same thing with other browsers like Firefox). First, let’s look at Chrome’s default shortcut: If you right click on it and select the properties menu, you’ll see where the shortcut points: "C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" If you run that shortcut, you’ll open up normal browsing mode in Chrome and your saved tabs will all load. What we need to do is use the command line switches available for Chrome and tell it that we want it to launch an Incognito window instead. Doing so is as simple as appending the end of the “Target” box’s command line entry with -incognito, like so: "C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" -incognito We’d also recommend changing the icon to it’s easy to tell the default Chrome shortcut apart from your new Incognito shortcut. When you’re done, make sure to hit OK/Apply at the button to save the changes. You can recreate the same private-browsing-shortcut effect with other major web browsers too. Repeat shortcut editing steps we highlighted above, but change out the -incognito with -private (for Firefox and Internet Explorer) and -newprivatetab (for Opera). With just a simple command line switch applied, you can now launch a lightweight single browser window for those quick web searches without having to stop your game and load up all your saved tabs. Have a pressing tech question? Email us at [email protected] and we’ll do our best to answer it.

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• Grid pathfinding with a lot of entities

  - by Vee

  I'd like to explain this problem with a screenshot from a released game, DROD: Gunthro's Epic Blunder, by Caravel Games. The game is turn-based and tile-based. I'm trying to create something very similar (a clone of the game), and I've got most of the fundamentals done, but I'm having trouble implementing pathfinding. Look at the screenshot. The guys in yellow are friendly, and want to kill the roaches. Every turn, every guy in yellow pathfinds to the closest roach, and every roach pathfinds to the closest guy in yellow. By closest I mean the target with the shortest path, not a simple distance calculation. All of this without any kind of slowdown when loading the level or when passing turns. And all of the entities change position every turn. Also (not shown in screenshot), there can be doors that open and close and change the level's layout. Impressive. I've tried implementing pathfinding in my clone. First attempt was making every roach find a path to a yellow guy every turn, using a breadth-first search algorithm. Obviously incredibly slow with more than a single roach, and would get exponentially slower with more than a single yellow guy. Second attempt was mas making every yellow guy generate a pathmap (still breadth-first search) every time he moved. Worked perfectly with multiple roaches and a single yellow guy, but adding more yellow guys made the game slow and unplayable. Last attempt was implementing JPS (jump point search). Every entity would individually calculate a path to its target. Fast, but with a limited number of entities. Having less than half the entities in the screenshot would make the game slow. And also, I had to get the "closest" enemy by calculating distance, not shortest path. I've asked on the DROD forums how they did it, and a user replied that it was breadth-first search. The game is open source, and I took a look at the source code, but it's C++ (I'm using C#) and I found it confusing. I don't know how to do it. Every approach I tried isn't good enough. And I believe that DROD generates global pathmaps, somehow, but I can't understand how every entity find the best individual path to other entities that move every turn. What's the trick? This is a reply I just got on the DROD forums: Without having looked at the code I'd wager it's two (or so) pathmaps for the whole room: One to the nearest enemy, and one to the nearest friendly for every tile. There's no need to make a separate pathmap for every entity when the overall goal is "move towards nearest enemy/friendly"... just mark every tile with the number of moves it takes to the nearest target and have the entity chose the move that takes it to the tile with the lowest number. To be honest, I don't understand it that well.

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• Stale statistics on a newly created temporary table in a stored procedure can lead to poor performance

  - by sqlworkshops

  When you create a temporary table you expect a new table with no past history (statistics based on past existence), this is not true if you have less than 6 updates to the temporary table. This might lead to poor performance of queries which are sensitive to the content of temporary tables.I was optimizing SQL Server Performance at one of my customers who provides search functionality on their website. They use stored procedure with temporary table for the search. The performance of the search depended on who searched what in the past, option (recompile) by itself had no effect. Sometimes a simple search led to timeout because of non-optimal plan usage due to this behavior. This is not a plan caching issue rather temporary table statistics caching issue, which was part of the temporary object caching feature that was introduced in SQL Server 2005 and is also present in SQL Server 2008 and SQL Server 2012. In this customer case we implemented a workaround to avoid this issue (see below for example for workarounds).When temporary tables are cached, the statistics are not newly created rather cached from the past and updated based on automatic update statistics threshold. Caching temporary tables/objects is good for performance, but caching stale statistics from the past is not optimal.We can work around this issue by disabling temporary table caching by explicitly executing a DDL statement on the temporary table. One possibility is to execute an alter table statement, but this can lead to duplicate constraint name error on concurrent stored procedure execution. The other way to work around this is to create an index.I think there might be many customers in such a situation without knowing that stale statistics are being cached along with temporary table leading to poor performance.Ideal solution is to have more aggressive statistics update when the temporary table has less number of rows when temporary table caching is used. I will open a connect item to report this issue.Meanwhile you can mitigate the issue by creating an index on the temporary table. You can monitor active temporary tables using Windows Server Performance Monitor counter: SQL Server: General Statistics->Active Temp Tables. The script to understand the issue and the workaround is listed below:set nocount onset statistics time offset statistics io offdrop table tab7gocreate table tab7 (c1 int primary key clustered, c2 int, c3 char(200))gocreate index test on tab7(c2, c1, c3)gobegin trandeclare @i intset @i = 1while @i <= 50000begininsert into tab7 values (@i, 1, ‘a’)set @i = @i + 1endcommit trangoinsert into tab7 values (50001, 1, ‘a’)gocheckpointgodrop proc test_slowgocreate proc test_slow @i intasbegindeclare @j intcreate table #temp1 (c1 int primary key)insert into #temp1 (c1) select @iselect @j = t7.c1 from tab7 t7 inner join #temp1 t on (t7.c2 = t.c1)endgodbcc dropcleanbuffersset statistics time onset statistics io ongo–high reads as expected for parameter ’1'exec test_slow 1godbcc dropcleanbuffersgo–high reads that are not expected for parameter ’2'exec test_slow 2godrop proc test_with_recompilegocreate proc test_with_recompile @i intasbegindeclare @j intcreate table #temp1 (c1 int primary key)insert into #temp1 (c1) select @iselect @j = t7.c1 from tab7 t7 inner join #temp1 t on (t7.c2 = t.c1)option (recompile)endgodbcc dropcleanbuffersset statistics time onset statistics io ongo–high reads as expected for parameter ’1'exec test_with_recompile 1godbcc dropcleanbuffersgo–high reads that are not expected for parameter ’2'–low reads on 3rd execution as expected for parameter ’2'exec test_with_recompile 2godrop proc test_with_alter_table_recompilegocreate proc test_with_alter_table_recompile @i intasbegindeclare @j intcreate table #temp1 (c1 int primary key)–to avoid caching of temporary tables one can create a constraint–but this might lead to duplicate constraint name error on concurrent usagealter table #temp1 add constraint test123 unique(c1)insert into #temp1 (c1) select @iselect @j = t7.c1 from tab7 t7 inner join #temp1 t on (t7.c2 = t.c1)option (recompile)endgodbcc dropcleanbuffersset statistics time onset statistics io ongo–high reads as expected for parameter ’1'exec test_with_alter_table_recompile 1godbcc dropcleanbuffersgo–low reads as expected for parameter ’2'exec test_with_alter_table_recompile 2godrop proc test_with_index_recompilegocreate proc test_with_index_recompile @i intasbegindeclare @j intcreate table #temp1 (c1 int primary key)–to avoid caching of temporary tables one can create an indexcreate index test on #temp1(c1)insert into #temp1 (c1) select @iselect @j = t7.c1 from tab7 t7 inner join #temp1 t on (t7.c2 = t.c1)option (recompile)endgoset statistics time onset statistics io ondbcc dropcleanbuffersgo–high reads as expected for parameter ’1'exec test_with_index_recompile 1godbcc dropcleanbuffersgo–low reads as expected for parameter ’2'exec test_with_index_recompile 2go

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• Web Service Example - Part 3: Asynchronous

  - by Denis T

  In this edition of the ADF Mobile blog we'll tackle part 3 of our Web Service examples.  In this posting we'll take a look at firing the web service asynchronously and then filling in the UI when it completes.  This can be useful when you have data on the device in a local store and want to show that to the user while the application uses lazy loading from a web service to load more data. Getting the sample code: Just click here to download a zip of the entire project.  You can unzip it and load it into JDeveloper and deploy it either to iOS or Android.  Please follow the previous blog posts if you need help getting JDeveloper or ADF Mobile installed.  Note: This is a different workspace than WS-Part2 What's different? In this example, when you click the Search button on the Forecast By Zip option, now it takes you directly to the results page, which is initially blank.  When the web service returns a second or two later the data pops into the UI.  If you go back to the search page and hit Search it will again clear the results and invoke the web service asynchronously.  This isn't really that useful for this particular example but it shows an important technique that can be used for other use cases. How it was done 1)  First we created a new class, ForecastWorker, that implements the Runnable interface.  This is used as our worker class that we create an instance of and pass to a new thread that we create when the Search button is pressed inside the retrieveForecast actionListener handler.  Once the thread is started, the retrieveForecast returns immediately.  2)  The rest of the code that we had previously in the retrieveForecast method has now been moved to the retrieveForecastAsync.  Note that we've also added synchronized specifiers on both these methods so they are protected from re-entrancy. 3)  The run method of the ForecastWorker class then calls the retrieveForecastAsync method.  This executes the web service code that we had previously, but now on a separate thread so the UI is not locked.  If we had already shown data on the screen it would have appeared before this was invoked.  Note that you do not see a loading indicator either because this is on a separate thread and nothing is blocked. 4)  The last but very important aspect of this method is that once we update data in the collections from the data we retrieve from the web service, we call AdfmfJavaUtilities.flushDataChangeEvents().   We need this because as data is updated in the background thread, those data change events are not propagated to the main thread until you explicitly flush them.  As soon as you do this, the UI will get updated if any changes have been queued. Summary of Fundamental Changes In This Application The most fundamental change is that we are invoking and handling our web services in a background thread and updating the UI when the data returns.  This allows an application to provide a better user experience in many cases because data that is already available locally is displayed while lengthy queries or web service calls can be done in the background and the UI updated when they return.  There are many different use cases for background threads and this is just one example of optimizing the user experience and generating a better mobile application. 

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• Multidimensional multiple-choice knapsack problem: find a feasible solution

  - by Onheiron

  My assignment is to use local search heuristics to solve the Multidimensional multiple-choice knapsack problem, but to do so I first need to find a feasible solution to start with. Here is an example problem with what I tried so far. Problem R1 R2 R3 RESOUCES : 8 8 8 GROUPS: G1: 11.0 3 2 2 12.0 1 1 3 G2: 20.0 1 1 3 5.0 2 3 2 G3: 10.0 2 2 3 30.0 1 1 3 Sorting strategies To find a starting feasible solution for my local search I decided to ignore maximization of gains and just try to fit the resources requirements. I decided to sort the choices (strategies) in each group by comparing their "distance" from the multidimensional space origin, thus calculating SQRT(R1^2 + R2^2 + ... + RN^2). I felt like this was a keen solution as it somehow privileged those choices with resouce usages closer to each other (e.g. R1:2 R2:2 R3:2 < R1:1 R2:2 R3:3) even if the total sum is the same. Doing so and selecting the best choice from each group proved sufficent to find a feasible solution for many[30] different benchmark problems, but of course I knew it was just luck. So I came up with the problem presented above which sorts like this: R1 R2 R3 RESOUCES : 8 8 8 GROUPS: G1: 12.0 1 1 3 < select this 11.0 3 2 2 G2: 20.0 1 1 3 < select this 5.0 2 3 2 G3: 30.0 1 1 3 < select this 10.0 2 2 3 And it is not feasible because the resources consmption is R1:3, R2:3, R3:9. The easy solution is to pick one of the second best choices in group 1 or 2, so I'll need some kind of iteration (local search[?]) to find the starting feasible solution for my local search solution. Here are the options I came up with Option 1: iterate choices I tried to find a way to iterate all the choices with a specific order, something like G1 G2 G3 1 1 1 2 1 1 1 2 1 1 1 2 2 2 1 ... believeng that feasible solutions won't be that far away from the unfeasible one I start with and thus the number of iterations will keep quite low. Does this make any sense? If yes, how can I iterate the choices (grouped combinations) of each group keeping "as near as possibile" to the previous iteration? Option 2: Change the comparation term I tried to think how to find a better variable to sort the choices on. I thought at a measure of how "precious" a resource is based on supply and demand, so that an higer demand of a more precious resource will push you down the list, but this didn't help at all. Also I thought there probably isn't gonna be such a comparsion variable which assures me a feasible solution at first strike. I there such a variable? If not, is there a better sorting criteria anyways? Option 3: implement any known sub-optimal fast solving algorithm Unfortunately I could not find any of such algorithms online. Any suggestion?

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• Microsoft Management Console stops working when I add snap-in to it

  - by JayaprakashReddy

  I have Windows 7 Ultimate OS. I'm opening mmc.exe as administrator and trying add Certificates or any other snap-in, then while loading that snap-in MMC breaks and displays following message and after that it closes automatically once I click on close button on that message. What could be the problem? I did following to fix the problem but couldn't succeed any of these: I tried to repair the OS I repaired files using this method Even repaired the installation using this link Update: *@oldskool: Here is the debug process output:* Sorry its a long output text. 'mmc.exe': Loaded 'C:\Windows\System32\mmc.exe', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\ntdll.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\kernel32.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\KernelBase.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\gdi32.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\user32.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\lpk.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\usp10.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\msvcrt.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\mfc42u.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\ole32.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\rpcrt4.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\oleaut32.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\odbc32.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\advapi32.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\sechost.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\mmcbase.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\shlwapi.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\uxtheme.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\duser.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\imm32.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\msctf.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\odbcint.dll', Binary was not built with debug information. 'mmc.exe': Loaded 'C:\Windows\System32\dui70.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\winsxs\x86_microsoft.windows.common-controls_6595b64144ccf1df_6.0.7600.16661_none_420fe3fa2b8113bd\comctl32.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\shell32.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\cryptbase.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\urlmon.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\wininet.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\iertutil.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\crypt32.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\msasn1.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\clbcatq.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\mmcndmgr.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\dwmapi.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\oleacc.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\cryptsp.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\rsaenh.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\RpcRtRemote.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\mlang.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\xmllite.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\version.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\apphelp.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\msi.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0\Bin\mscormmc.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\mscoree.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\winsxs\x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.4927_none_d08a205e442db5b5\msvcr80.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\azroleui.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\atl.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\secur32.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\netutils.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\dsrole.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\logoncli.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\dsuiext.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\ntdsapi.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\ws2_32.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\nsi.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\activeds.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\adsldpc.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\Wldap32.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\mpr.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\netapi32.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\srvcli.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\wkscli.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\certmgr.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\certcli.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\CertEnroll.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\cryptui.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\ncrypt.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\bcrypt.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\wintrust.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\imagehlp.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\sspicli.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\aclui.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\IPHLPAPI.DLL', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\winnsi.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\slc.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\comsnap.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\mfc42.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\mycomput.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\devmgr.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\setupapi.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\cfgmgr32.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\devobj.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\devrtl.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\newdev.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\dmdskmgr.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\dmutil.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\dmdskres.dll', Binary was not built with debug information. 'mmc.exe': Loaded 'C:\Windows\System32\dmdskres2.dll', Binary was not built with debug information. 'mmc.exe': Loaded 'C:\Windows\System32\gpedit.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\dssec.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\authz.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\dfscli.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\samcli.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\gpapi.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\framedynos.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\wtsapi32.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\ipsmsnap.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\winipsec.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\userenv.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\profapi.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\ipsecsnp.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\polstore.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\localsec.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\wdc.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\pdh.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\pdhui.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\comdlg32.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\credui.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\wevtapi.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\pla.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\tdh.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\winsta.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\utildll.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\browcli.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\vdmdbg.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\pmcsnap.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\winspool.drv', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\puiapi.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\wsecedit.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\scecli.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\filemgmt.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Program Files\Microsoft SQL Server\100\Tools\Binn\SqlManager.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\winsxs\x86_microsoft.vc80.mfc_1fc8b3b9a1e18e3b_8.0.50727.4053_none_cbf21254470d8752\mfc80u.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\winsxs\x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.4927_none_d08a205e442db5b5\msvcp80.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\winsxs\x86_microsoft.vc80.atl_1fc8b3b9a1e18e3b_8.0.50727.4053_none_d1c738ec43578ea1\ATL80.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\winsxs\x86_microsoft.windows.common-controls_6595b64144ccf1df_5.82.7600.16661_none_ebfb56996c72aefc\comctl32.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\winsxs\x86_microsoft.vc80.mfcloc_1fc8b3b9a1e18e3b_8.0.50727.4053_none_03ca5532205cb096\mfc80ENU.dll', Binary was not built with debug information. 'mmc.exe': Loaded 'C:\Program Files\Microsoft SQL Server\100\Tools\Binn\Resources\1033\SqlManager.rll', Binary was not built with debug information. 'mmc.exe': Loaded 'C:\Windows\System32\msxml6.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Program Files\Microsoft SQL Server\90\Tools\Binn\SqlManager.dll', Cannot find or open the PDB file 'mmc.exe': Loaded 'C:\Windows\System32\wbem\wbemcntl.dll', Cannot find or open the PDB file The thread 'Win32 Thread' (0xf74) has exited with code 0 (0x0). Unhandled exception at 0x774d35e3 in mmc.exe: 0xC0000374: A heap has been corrupted.

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• How to fix "ruby installation is missing psych (for YAML output)." on CentOS?

  - by ohho

  After rvm installation on CentOS 5.8: [rails@localhost ~]$ rvm -v rvm 1.16.17 [rails@localhost ~]$ which ruby ~/.rvm/rubies/ruby-1.9.3-p286/bin/ruby [rails@localhost ~]$ ruby -v ruby 1.9.3p286 (2012-10-12 revision 37165) [i686-linux] [rails@localhost ~]$ which gem ~/.rvm/rubies/ruby-1.9.3-p286/bin/gem there is a warning: $ gem -v /home/rails/.rvm/rubies/ruby-1.9.3-p286/lib/ruby/1.9.1/yaml.rb:56:in `<top (required)>': It seems your ruby installation is missing psych (for YAML output). To eliminate this warning, please install libyaml and reinstall your ruby. 1.8.24 I followed some advice: $ rvm pkg install libyaml Fetching yaml-0.1.4.tar.gz to /home/rails/.rvm/archives Extracting yaml-0.1.4.tar.gz to /home/rails/.rvm/src Prepare yaml in /home/rails/.rvm/src/yaml-0.1.4. Configuring yaml in /home/rails/.rvm/src/yaml-0.1.4. Compiling yaml in /home/rails/.rvm/src/yaml-0.1.4. Installing yaml to /home/rails/.rvm/usr Please note that it's required to reinstall all rubies: rvm reinstall all --force and then: $ rvm reinstall all --force Removing /home/rails/.rvm/src/ruby-1.8.7-p371... Removing /home/rails/.rvm/rubies/ruby-1.8.7-p371... No binary rubies available for: centos/5.8/i386/ruby-1.8.7-p371. Continuing with compilation. Please read 'rvm mount' to get more information on binary rubies. Installing Ruby from source to: /home/rails/.rvm/rubies/ruby-1.8.7-p371, this may take a while depending on your cpu(s)... ruby-1.8.7-p371 - #downloading ruby-1.8.7-p371, this may take a while depending on your connection... ruby-1.8.7-p371 - #extracting ruby-1.8.7-p371 to /home/rails/.rvm/src/ruby-1.8.7-p371 ruby-1.8.7-p371 - #extracted to /home/rails/.rvm/src/ruby-1.8.7-p371 Applying patch /home/rails/.rvm/patches/ruby/1.8.7/stdout-rouge-fix.patch Applying patch /home/rails/.rvm/patches/ruby/1.8.7/no_sslv2.diff ruby-1.8.7-p371 - #configuring ruby-1.8.7-p371 - #compiling ruby-1.8.7-p371 - #installing Removing old Rubygems files... Installing rubygems-1.8.24 for ruby-1.8.7-p371 ... Installation of rubygems completed successfully. Saving wrappers to '/home/rails/.rvm/bin'. ruby-1.8.7-p371 - #adjusting #shebangs for (gem irb erb ri rdoc testrb rake). ruby-1.8.7-p371 - #importing default gemsets (/home/rails/.rvm/gemsets/) Install of ruby-1.8.7-p371 - #complete Please be aware that you just installed a ruby that requires 2 patches just to be compiled on up to date linux system. This may have known and unaccounted for security vulnerabilities. Please consider upgrading to Ruby 1.9.3-286 which will have all of the latest security patches. Making gemset ruby-1.8.7-p371 pristine. Making gemset ruby-1.8.7-p371@global pristine. Removing /home/rails/.rvm/src/ruby-1.9.3-p286... Removing /home/rails/.rvm/rubies/ruby-1.9.3-p286... No binary rubies available for: centos/5.8/i386/ruby-1.9.3-p286. Continuing with compilation. Please read 'rvm mount' to get more information on binary rubies. Installing Ruby from source to: /home/rails/.rvm/rubies/ruby-1.9.3-p286, this may take a while depending on your cpu(s)... ruby-1.9.3-p286 - #downloading ruby-1.9.3-p286, this may take a while depending on your connection... ruby-1.9.3-p286 - #extracting ruby-1.9.3-p286 to /home/rails/.rvm/src/ruby-1.9.3-p286 ruby-1.9.3-p286 - #extracted to /home/rails/.rvm/src/ruby-1.9.3-p286 ruby-1.9.3-p286 - #configuring ruby-1.9.3-p286 - #compiling ruby-1.9.3-p286 - #installing Removing old Rubygems files... Installing rubygems-1.8.24 for ruby-1.9.3-p286 ... Installation of rubygems completed successfully. Saving wrappers to '/home/rails/.rvm/bin'. ruby-1.9.3-p286 - #adjusting #shebangs for (gem irb erb ri rdoc testrb rake). ruby-1.9.3-p286 - #importing default gemsets (/home/rails/.rvm/gemsets/) Install of ruby-1.9.3-p286 - #complete Making gemset ruby-1.9.3-p286 pristine. Making gemset ruby-1.9.3-p286@global pristine. Too bad, the warning is still there: $ gem -v /home/rails/.rvm/rubies/ruby-1.9.3-p286/lib/ruby/1.9.1/yaml.rb:56:in `<top (required)>': It seems your ruby installation is missing psych (for YAML output). To eliminate this warning, please install libyaml and reinstall your ruby. 1.8.24 How can I get rid of the warning? UPDATE: (applying rvm reinstall 1.9.3 --movable) $ rvm reinstall 1.9.3 --movable Removing /home/rails/.rvm/src/ruby-1.9.3-p286... Removing /home/rails/.rvm/rubies/ruby-1.9.3-p286... Fetching yaml-0.1.4.tar.gz to /home/rails/.rvm/archives Extracting yaml-0.1.4.tar.gz to /home/rails/.rvm/src Prepare yaml in /home/rails/.rvm/src/yaml-0.1.4. Configuring yaml in /home/rails/.rvm/src/yaml-0.1.4. Compiling yaml in /home/rails/.rvm/src/yaml-0.1.4. Installing yaml to /home/rails/.rvm/rubies/ruby-1.9.3-p286 Installing Ruby from source to: /home/rails/.rvm/rubies/ruby-1.9.3-p286, this may take a while depending on your cpu(s)... ruby-1.9.3-p286 - #downloading ruby-1.9.3-p286, this may take a while depending on your connection... ruby-1.9.3-p286 - #extracting ruby-1.9.3-p286 to /home/rails/.rvm/src/ruby-1.9.3-p286 ruby-1.9.3-p286 - #extracted to /home/rails/.rvm/src/ruby-1.9.3-p286 Applying patch /home/rails/.rvm/patches/ruby/1.9.3/ruby-multilib.patch Error running 'patch -F 25 -p1 -N -f -i /home/rails/.rvm/patches/ruby/1.9.3/ruby-multilib.patch', please read /home/rails/.rvm/log/ruby-1.9.3-p286/patch.apply.ruby-multilib.log There has been an error applying the specified patches. Halting the installation. Making gemset ruby-1.9.3-p286 pristine. Making gemset ruby-1.9.3-p286@global pristine.

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• Unicode Collations problem ?

  - by Bayonian

  (.NET 3.5 SP1, VS 2008, VB.NET, MSSQL Server 2008) I'm writing a small web app to test the Khmer Unicode and Lao Unicode. I have a table that store text in Khmer Unicode with the following structure : [t_id] [int] IDENTITY(1,1) NOT NULL [t_chid] [int] NOT NULL [t_vn] [int] NOT NULL [t_v] [nvarchar](max) NOT NULL I can use Linq to SQL to do CRUD normally. The text display properly on the web page, even though I didn't change the default collation of MSSQL Server 2008. When it comes to search the column [t_v], the page will take a very long time to load and in fact, it loads every row of that column. It never compares with the "key word" criteria that I use for the search. Here's my query for the search : Public Shared Function SearchTestingKhmerTable(ByVal keyword As String) As DataTable Dim db As New BibleDataClassesDataContext() Dim query = From b In db.khmer_books _ From ch In db.khmer_chapters _ From v In db.testing_khmers _ Where v.t_v.Contains(keyword) And ch.kh_book_id = b.kh_b_id And v.t_chid = ch.kh_ch_id _ Select b.kh_b_id, b.kh_b_title, ch.kh_ch_id, ch.kh_ch_number, v.t_id, v.t_vn, v.t_v Dim dtDataTableOne = New DataTable("dtOne") dtDataTableOne.Columns.Add("bid", GetType(Integer)) dtDataTableOne.Columns.Add("btitle", GetType(String)) dtDataTableOne.Columns.Add("chid", GetType(Integer)) dtDataTableOne.Columns.Add("chn", GetType(Integer)) dtDataTableOne.Columns.Add("vid", GetType(Integer)) dtDataTableOne.Columns.Add("vn", GetType(Integer)) dtDataTableOne.Columns.Add("verse", GetType(String)) For Each r In query dtDataTableOne.Rows.Add(New Object() {r.kh_b_id, r.kh_b_title, r.kh_ch_id, r.kh_ch_number, r.t_id, r.t_vn, r.t_v}) Next Return dtDataTableOne End Function Please note that I use the exact same code and database design with Lao Unicode and it works just fine. I get the returned query as expected for the search. I can't figure out what the problem with searching for query in Khmer table.

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• Thinking Sphinx and acts_as_taggable_on plugin

  - by Brian Roisentul

  Hi, I installed Sphinx and Thinking Sphinx for ruby on rails 2.3.2. When I search without conditions search works ok. Now, what I'd like to do is filter by tags, so, as I'm using the acts_as_taggable_on plugin, my Announcement model looks like this: class Announcement < ActiveRecord::Base acts_as_taggable_on :tags,:category define_index do indexes title, :as => :title, :sortable => true indexes description, :as => :description, :sortable => true indexes tags.name, :as => :tags indexes category.name, :as => :category has category(:id), :as => :category_ids has tags(:id), :as => :tag_ids end For some reason, when I run the following command, it will bring just one announcement, that has nothing to do with what I expect. I've got many announcements, so I expected a lot of results instead. Announcement.search params[:announcement][:search].to_s, :with => {:tag_ids => 1}, :page => params[:page], :per_page => 10 I guess something is wrong, and it's not searching correctly. Can anyone give my a clue of what's going on? Thanks, Brian

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• How do I change OSX package install directory?

  - by Scott

  It drives me nuts that every time I download a binary to run on OSX that it wants to install in system directories. ~/Applications is a perfectly fine place to install and doesn't require blindly authenticating somebody else's binary. Is there a way to change the install directory for packages? On a few I've been able to open the package and edit the plist to install it elsewhere, but that doesn't work universally. I install from source when I can, but it isn't always an option. Is there a good way to force the installer to use ~/Applications?

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• Jumbled byte array after using TcpClient and TcpListener

  - by Dylan

  I want to use the TcpClient and TcpListener to send an mp3 file over a network. I implemented a solution of this using sockets, but there were some issues so I am investigating a new/better way to send a file. I create a byte array which looks like this: length_of_filename|filename|file This should then be transmitted using the above mentioned classes, yet on the server side the byte array I read is completely messed up and I'm not sure why. The method I use to send: public static void Send(String filePath) { try { IPEndPoint endPoint = new IPEndPoint(Settings.IpAddress, Settings.Port + 1); Byte[] fileData = File.ReadAllBytes(filePath); FileInfo fi = new FileInfo(filePath); List<byte> dataToSend = new List<byte>(); dataToSend.AddRange(BitConverter.GetBytes(Encoding.Unicode.GetByteCount(fi.Name))); // length of filename dataToSend.AddRange(Encoding.Unicode.GetBytes(fi.Name)); // filename dataToSend.AddRange(fileData); // file binary data using (TcpClient client = new TcpClient()) { client.Connect(Settings.IpAddress, Settings.Port + 1); // Get a client stream for reading and writing. using (NetworkStream stream = client.GetStream()) { // server is ready stream.Write(dataToSend.ToArray(), 0, dataToSend.ToArray().Length); } } } catch (ArgumentNullException e) { Debug.WriteLine(e); } catch (SocketException e) { Debug.WriteLine(e); } } } Then on the server side it looks as follows: private void Listen() { TcpListener server = null; try { // Setup the TcpListener Int32 port = Settings.Port + 1; IPAddress localAddr = IPAddress.Parse("127.0.0.1"); // TcpListener server = new TcpListener(port); server = new TcpListener(localAddr, port); // Start listening for client requests. server.Start(); // Buffer for reading data Byte[] bytes = new Byte[1024]; List<byte> data; // Enter the listening loop. while (true) { Debug.WriteLine("Waiting for a connection... "); string filePath = string.Empty; // Perform a blocking call to accept requests. // You could also user server.AcceptSocket() here. using (TcpClient client = server.AcceptTcpClient()) { Debug.WriteLine("Connected to client!"); data = new List<byte>(); // Get a stream object for reading and writing using (NetworkStream stream = client.GetStream()) { // Loop to receive all the data sent by the client. while ((stream.Read(bytes, 0, bytes.Length)) != 0) { data.AddRange(bytes); } } } int fileNameLength = BitConverter.ToInt32(data.ToArray(), 0); filePath = Encoding.Unicode.GetString(data.ToArray(), 4, fileNameLength); var binary = data.GetRange(4 + fileNameLength, data.Count - 4 - fileNameLength); Debug.WriteLine("File successfully downloaded!"); // write it to disk using (BinaryWriter writer = new BinaryWriter(File.Open(filePath, FileMode.Append))) { writer.Write(binary.ToArray(), 0, binary.Count); } } } catch (Exception ex) { Debug.WriteLine(ex); } finally { // Stop listening for new clients. server.Stop(); } } Can anyone see something that I am missing/doing wrong?

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• Help with Boost Spirit ASTs

  - by Decmac04

  I am writing a small tool for analyzing simple B Machine substitutions as part of a college research work. The code successfully parse test inputs of the form mySubst := var1 + var2. However, I get a pop-up error message saying "This application has requested the Runtime to terminate it in an unusual way. " In the command prompt window, I get an "Assertion failed message". The main program is given below: // BMachineTree.cpp : Defines the entry point for the console application. // /*============================================================================= Copyright (c) 2010 Temitope Onunkun =============================================================================*/ /////////////////////////////////////////////////////////////////////////////// // // UUsing Boost Spririt Trees (AST) to parse B Machine Substitutions. // /////////////////////////////////////////////////////////////////////////////// #define BOOST_SPIRIT_DUMP_PARSETREE_AS_XML #include <boost/spirit/core.hpp> #include <boost/spirit/tree/ast.hpp> #include <boost/spirit/tree/tree_to_xml.hpp> #include "BMachineTreeGrammar.hpp" #include <iostream> #include <stack> #include <functional> #include <string> #include <cassert> #include <vector> #if defined(BOOST_SPIRIT_DUMP_PARSETREE_AS_XML) #include <map> #endif // Using AST to parse B Machine substitutions //////////////////////////////////////////////////////////////////////////// using namespace std; using namespace boost::spirit; typedef char const* iterator_t; typedef tree_match<iterator_t> parse_tree_match_t; typedef parse_tree_match_t::tree_iterator iter_t; //////////////////////////////////////////////////////////////////////////// string evaluate(parse_tree_match_t hit); string eval_machine(iter_t const& i); vector<string> dx; string evaluate(tree_parse_info<> info) { return eval_machine(info.trees.begin()); } string eval_machine(iter_t const& i) { cout << "In eval_machine. i->value = " << string(i->value.begin(), i->value.end()) << " i->children.size() = " << i->children.size() << endl; if (i->value.id() == substitution::leafValueID) { assert(i->children.size() == 0); // extract string tokens string leafValue(i->value.begin(), i->value.end()); dx.push_back(leafValue.c_str()); return leafValue.c_str(); } // else if (i->value.id() == substitution::termID) { if ( (*i->value.begin() == '*') || (*i->value.begin() == '/') ) { assert(i->children.size() == 2); dx.push_back( eval_machine(i->children.begin()) ); dx.push_back( eval_machine(i->children.begin()+1) ); return eval_machine(i->children.begin()) + " " + eval_machine(i->children.begin()+1); } // else assert(0); } else if (i->value.id() == substitution::expressionID) { if ( (*i->value.begin() == '+') || (*i->value.begin() == '-') ) { assert(i->children.size() == 2); dx.push_back( eval_machine(i->children.begin()) ); dx.push_back( eval_machine(i->children.begin()+1) ); return eval_machine(i->children.begin()) + " " + eval_machine(i->children.begin()+1); } else assert(0); } // else if (i->value.id() == substitution::simple_substID) { if (*i->value.begin() == (':' >> '=') ) { assert(i->children.size() == 2); dx.push_back( eval_machine(i->children.begin()) ); dx.push_back( eval_machine(i->children.begin()+1) ); return eval_machine(i->children.begin()) + "|->" + eval_machine(i->children.begin()+1); } else assert(0); } else { assert(0); // error } return 0; } //////////////////////////////////////////////////////////////////////////// int main() { // look in BMachineTreeGrammar for the definition of BMachine substitution BMach_subst; cout << "/////////////////////////////////////////////////////////\n\n"; cout << "\t\tB Machine Substitution...\n\n"; cout << "/////////////////////////////////////////////////////////\n\n"; cout << "Type an expression...or [q or Q] to quit\n\n"; string str; while (getline(cin, str)) { if (str.empty() || str[0] == 'q' || str[0] == 'Q') break; tree_parse_info<> info = ast_parse(str.c_str(), BMach_subst, space_p); if (info.full) { #if defined(BOOST_SPIRIT_DUMP_PARSETREE_AS_XML) // dump parse tree as XML std::map<parser_id, std::string> rule_names; rule_names[substitution::identifierID] = "identifier"; rule_names[substitution::leafValueID] = "leafValue"; rule_names[substitution::factorID] = "factor"; rule_names[substitution::termID] = "term"; rule_names[substitution::expressionID] = "expression"; rule_names[substitution::simple_substID] = "simple_subst"; tree_to_xml(cout, info.trees, str.c_str(), rule_names); #endif // print the result cout << "Variables in Vector dx: " << endl; for(vector<string>::iterator idx = dx.begin(); idx < dx.end(); ++idx) cout << *idx << endl; cout << "parsing succeeded\n"; cout << "result = " << evaluate(info) << "\n\n"; } else { cout << "parsing failed\n"; } } cout << "Bye... :-) \n\n"; return 0; } The grammar, defined in BMachineTreeGrammar.hpp file is given below: /*============================================================================= Copyright (c) 2010 Temitope Onunkun http://www.dcs.kcl.ac.uk/pg/onun Use, modification and distribution is subject to the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) =============================================================================*/ #ifndef BOOST_SPIRIT_BMachineTreeGrammar_HPP_ #define BOOST_SPIRIT_BMachineTreeGrammar_HPP_ using namespace boost::spirit; /////////////////////////////////////////////////////////////////////////////// // // Using Boost Spririt Trees (AST) to parse B Machine Substitutions. // /////////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////// // // B Machine Grammar // //////////////////////////////////////////////////////////////////////////// struct substitution : public grammar<substitution> { static const int identifierID = 1; static const int leafValueID = 2; static const int factorID = 3; static const int termID = 4; static const int expressionID = 5; static const int simple_substID = 6; template <typename ScannerT> struct definition { definition(substitution const& ) { // Start grammar definition identifier = alpha_p >> (+alnum_p | ch_p('_') ) ; leafValue = leaf_node_d[ lexeme_d[ identifier | +digit_p ] ] ; factor = leafValue | inner_node_d[ ch_p( '(' ) >> expression >> ch_p(')' ) ] ; term = factor >> *( (root_node_d[ch_p('*') ] >> factor ) | (root_node_d[ch_p('/') ] >> factor ) ); expression = term >> *( (root_node_d[ch_p('+') ] >> term ) | (root_node_d[ch_p('-') ] >> term ) ); simple_subst= leaf_node_d[ lexeme_d[ identifier ] ] >> root_node_d[str_p(":=")] >> expression ; // End grammar definition // turn on the debugging info. BOOST_SPIRIT_DEBUG_RULE(identifier); BOOST_SPIRIT_DEBUG_RULE(leafValue); BOOST_SPIRIT_DEBUG_RULE(factor); BOOST_SPIRIT_DEBUG_RULE(term); BOOST_SPIRIT_DEBUG_RULE(expression); BOOST_SPIRIT_DEBUG_RULE(simple_subst); } rule<ScannerT, parser_context<>, parser_tag<simple_substID> > simple_subst; rule<ScannerT, parser_context<>, parser_tag<expressionID> > expression; rule<ScannerT, parser_context<>, parser_tag<termID> > term; rule<ScannerT, parser_context<>, parser_tag<factorID> > factor; rule<ScannerT, parser_context<>, parser_tag<leafValueID> > leafValue; rule<ScannerT, parser_context<>, parser_tag<identifierID> > identifier; rule<ScannerT, parser_context<>, parser_tag<simple_substID> > const& start() const { return simple_subst; } }; }; #endif The output I get on running the program is: ///////////////////////////////////////////////////////// B Machine Substitution... ///////////////////////////////////////////////////////// Type an expression...or [q or Q] to quit mySubst := var1 - var2 parsing succeeded In eval_machine. i->value = := i->children.size() = 2 Assertion failed: 0, file c:\redmound\bmachinetree\bmachinetree\bmachinetree.cpp , line 114 I will appreciate any help in resolving this problem.

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• Jailkit - allowing use of Java/Python

  - by James hooker

  I'm looking to allow Jailed users to use JAVA (JRE) to execute their own Java files, similarly with Python to execute py scripts. I've tried adding the JAVA binary (/usr/bin/java) to a jail using the following jk_cp /path/to/jail /usr/bin/java This seems to copy some of the libraries across, aswell as the Java binary itself, however the jailed user is still unable to execute Java. It complains first of all of a missing lib called libsli.so. I copied that across and it then complains about libjava.so which I proceeded to copy across to, to no avail. Does anyone have experience with enabling the execution of Java within a jailed environment? This is under Ubuntu 10.04 64-bit, with Jailkit 2.11.

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• Java process failure (hadoop, hbase)

  - by Vladimir

  Anytime I am running hadoop/hbase process from a command prompt I get an error: /usr/local/hadoop/bin/hadoop: line 320: /usr/lib/jvm/jdk1.7.0/bin/java: cannot execute binary file /usr/local/hadoop/bin/hadoop: line 390: /usr/lib/jvm/jdk1.7.0/bin/java: cannot execute binary file /usr/local/hadoop/bin/hadoop: line 390: /usr/lib/jvm/jdk1.7.0/bin/java: Success I get the same kind of error when I start hbase. java version "1.7.0_07" Java(TM) SE Runtime Environment (build 1.7.0_07-b10) Java HotSpot(TM) Server VM (build 23.3-b01, mixed mode) Could you please tell me what could cause the issue? Thank you

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• How do I create a customized keyboard layout for Windows?

  - by Pedro Palhoto

  On Linux you can create any layout you wish by editing the appropriate ASCII configuration files. On Windows the keyboard layout definitions are binary. Is there any tool that can create these binary keyboard layout configuration files? I grew up on the Macintosh international keyboard layout, which used the option key extensively, and now I would like to use the same layout on Windows. On Linux this Mac international keyboard layout exists for both the console as well as for X.Org. On Windows, the most similar layout is US International, which is not the same.

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• Apache not running from rc.d on FreeBSD

  - by Oksana Molotova

  I'm using FreeBSD 8.3 and Apache 2.2. I didn't install Apache from ports, instead compiled it from source because I wanted to move the binary and configuration to a different path (I'm centering all of the major production daemons and their configurations in a single place). In any case, I based the /usr/local/etc/rc.d/apache22 file on one from a different server where it was installed from ports, I only modified the binary and config paths within. I can manually execute it with /usr/local/etc/rc.d/apache22 start, however even with apache22_enable="YES" in /etc/rc.conf it fails to start. All permissions and ownership are identical to the other server where it works. What am I missing and is there a way to debug this kind of thing?

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• MKAnnotationView is not added for some annotations

  - by Dave

  I find that MKMapView has to be re-centered to a significant distance away from an existing map center to be able to add more annotations to the map and DISPLAY them. Is this a bug in SDK 3.2? I have looked literally EVERYWHERE and can't find a way to refresh the map view without having to zoom in or zoom out or move the map view. Why?? I don't mind if the solution involves doing a bunch of custom delegates and notifications. I just NEED this so bad. Basically, I am adding pins (annotations) to a map view when performing a search for businesses. I remove existing annotations on every search. So the annotations are added to the map on every search. If I search twice with the same map view, I see the results loading but the map view is empty. The pins will appear if i move/resize/zoom in. Anybody seen this? any help is appreciated.

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• How can I access master page text box from jquery file?

  - by stackuser1

  In my master page i've a textbox. <asp:TextBox ID="SearchTextBox" runat="server" class="searchtxtbox" onfocus="HideSearchWaterMark();" Text="Search" onblur="ShowSearchWaterMark(this);" /> I added jquery references in code behind. TextBox SearchTextBox = this.FindControl("SearchTextBox") as TextBox; StringBuilder objStringBuilder = new StringBuilder(); objStringBuilder.Append("<script type=\"text/javascript\" language=\"javascript\">\n"); objStringBuilder.AppendFormat("var searchTextBox = '{0}';\n", SearchTextBox.ClientID); objStringBuilder.Append("</script>\n"); this.Page.ClientScript.RegisterClientScriptBlock(GetType(), "RegisterVariables", objStringBuilder.ToString()); this.Page.ClientScript.RegisterClientScriptInclude(this.GetType(), "Global", this.ResolveClientUrl("~/Resources/Scripts/Search.js")); this.Page.ClientScript.RegisterClientScriptInclude(this.GetType(), "Global", this.ResolveClientUrl("~/Resources/Scripts/jquery-1.4.2.js")); this.Page.ClientScript.RegisterClientScriptInclude(this.GetType(), "Global", this.ResolveClientUrl("~/Resources/TagsScripts/jquery.autocomplete.js")); in Search.js i've the following methods to access the text box of master page: $(document).ready(function () { $("#" + searchTextBox).autocomplete("Handlers/GenericHandler.ashx?tgt=12", { multiple: true, multipleSeparator: ";", mustMatch: false, autoFill: true }); }); function HideSearchWaterMark() { var control = $("#" + searchTextBox); if (control[0].className == "searchtxtbox ac_input") control[0].value = ""; control[0].className = "searchtxtbox ac_input"; } function ShowSearchWaterMark(tagsTextBox) { if (searchTextBox.value.length == 0) { searchTextBox.value = "Search"; searchTextBox.className = "searchtxtbox ac_input"; } When i run my application i'm getting object reference not set error. Please tell me where i need to change my code.

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