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• using BOSH/similar technique for existing application/system

  - by SnapConfig.com

  We've an existing system which connects to the the back end via http (apache/ssl) and polls the server for new messages, needless to say we have scalability issues. I'm researching on removing this polling and have come across BOSH/XMPP but I'm not sure how we should take the BOSH technique (using long lived http connection). I've seen there are few libraries available but the entire thing seems bloaty since we do not need buddy lists etc and simply want to notify the clients of available messages. The client is written in C/C++ and works across most OS so that is an important factor. The server is in Java. does bosh result in huge number of httpd processes? since it has to keep all the clients connected, what would be the limit on that. we are also planning to move to 64 bit JVM/apache what would be the max limit of clients in that case. any hints?

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• Penalty clause on programming contract

  - by Everyone

  I am considering the move to the other side of development, as a contract programmer. SO has given me a good few hints on the kind of figures to quote ( and why ), and a few points to bear in mind such as Non-competition and [IP Protection] Having worked as a programmer for a while, I know that a few reasons for deadline delays may be - Estimates can be all over the place both from the Contractor, and the Job provider Things like bandwidth bottlenecks, merge for high-impact code etc Clarification time on provided requirements... etc If you have worked as a contract programmer then How frequently do you encounter a penalty/forfeit clause in your agreement? What do you deem unacceptable in the penalty/forfeit clause?

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• Capture Flash Audio in 4.7 Edge?

  - by emcmanus

  Is there a way to capture plugin (Flash) audio before it gets to the sound card? I'd like to record plugin audio, hopefully without actually playing the sound. Capturing audio at the device level is an absolute last resort, as the application would pick up all system audio rather than just the Webkit plugin. I'm aware of the recent switch back from QTMultimedia; is this possible with phonon? I spent the night looking for some way to access the phonon graph via QWebFrame (or any of the QtWebkit widgets) -- and didn't turn up much. I also started digging through QTWebkit, particularly NPAPI, without success. For reference, I'm using the edge version of 4.7 (6aa50af000f85cc4497749fcf0860c8ed244a60e) This seems to be a fairly challenging problem. Any hints would be greatly appreciated.

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• Java exception reading xml file

  - by xain

  Hi, I have the following xml file: <?xml version="1.0" encoding="UTF-8"?> <c1> <c2 id="0001" n="CM" urlget="/at/CsM" urle="/E/login.jsp"> </c2> <c2 id="0002" n="C2M" urlget="/a2t/CsM" urle="/E2/login.jsp"> </c2> </c1> I'm trying to load c2's attributes this way: Document d = DocumentBuilderFactory.newInstance() .newDocumentBuilder() .parse("epxy.xml"); Element c1 = d.getDocumentElement(); Element c2 = (Element)c1.getFirstChild(); while (c2 != null) { ... c2 = (Element)c2.getNextSibling(); } But I get the exception java.lang.ClassCastException: org.apache.xerces.dom.DeferredTextImpl incompatible with org.w3c.dom.Element in the line Element c2 = (Element)c1.getFirstChild(); before the loop. Any hints ? Thanks.

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• Haskell as REST server

  - by Dev er dev

  I would like to try Haskell on a smallish project which should be well suited to it. I would like to use it as a backend to a small ajax application. Haskell backend should be able to do authentication (basic, form, whatever, ...), keep track of user session (not much data there except for username) and to dispatch request to handlers based on uri and request type. It should also be able to serialize response to both xml and json format, depending on request parameter. I suppose the handlers are ideally suited for Haskell, since the service is basically stateless, but I don't know where to start for the rest of the story. Searching hackage didn't give me much hints.

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• Mono and Apache are serving files with no ASP.NET processing

  - by dnord

  On a new Rackspace Cloud Server box (Ubuntu 9.10), I've installed apache2, libapache2-mod-mono, and mod-mono-server2. I've disabled mod_mono and enabled mod_mono_auto, but whatever I do, requests for Default.aspx return the actual contents of Default.aspx (in this case, "This is a marker file generated by the precompilation tool, and should not be deleted!") I've installed XSP, and it looks like it works okay, but I'd like to use Apache with mod_mono (seems a more common configuration) if I can get it running. However, this is no error messages and no hints, with Google obviously not terribly helpful. What else can I look for to make sure I'm configured correctly? How can I test further?

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• Why might SQL execute more quickly on SQL Server 2000 when NOT using a stored procedure?

  - by Kofi Sarfo

  I could see nothing wrong with the execution plan. Besides, as I understand it, SQL Server 2000 extended many of the performance benefits of stored procedures to all SQL statements by recognising new T-SQL statements against T-SQL statements of existing execution plans (by retaining execution plans for all SQL statements in the procedure cache, not just stored procedure execution plans) It's a fairly straight forward SELECT statement with sensible table joins, no transactions included or linked servers being referenced within the query and WITH (NOLOCK) table hints applied. The stored procedure was created by dbo and the user has all the necessary permissions. So my question is this: What are the likely reasons for a query to take only a few seconds to run but then take several minutes when identical T-SQL is run via a stored procedure?

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• flex: move item around in a tree control

  - by Markus

  Hi everybody, I have a tree control and I want to give the user the ability that he can move up and down the element he just selected with a up and a downbutton. The tree gets generated from XML. I managed to insert the selected item a second time at a other place, with the following code: var parentXML:XML = XML(containerTree.selectedItem).parent(); var upperItem:XML = topContainer.source[containerTree.selectedIndex-1]; parentXML.insertChildBefore(upperItem,XML(containerTree.selectedItem)); but then I have the item there twice in the List. How can I remove to reinsert it? Thanks for Hints! Markus

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• Is it possible to alter a marked field´s field function with Word 2007 VBA?

  - by Richard

  Hi, i want do the following: In Word 2007 place the Cursor on a field (or mark that field) and call a macro wich edit the field function of that field. (add some string). I´m even grateful for some tipps what term to google. I used the macro recorder and got following: WordBasic.FormatField Field:="CITATION Gro05 \p 9 \l 1031" Thats obvious creats a new field but where to go from here? To get the selected field i thought about something like this: If Selection.Type = WdFieldType Then ... I hope someone give me some hints :) Bye Richard

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• How to model a social news feed on Google App Engine

  - by PEZ

  We want to implement a "News feed" where a user can see messages broadcasted by her friends, sorted with newest message first. But the feed should reflect changes in her friends list. (If she adds new friends, messages from those should be included in the feed, and if she removes friends their messages should not be included.) If we use the pubsub-test example and attach a recipient list to each message this means a lot of manipulation of the message recipients lists when users connect and disconnect friends. We first modeled publish-subscribe "fan out" using conventional RDBMS thinking. It seemed to work at first, but then, since the IN operator works the way it does, we quickly realized we couldn't continue on that path. We found Brett Slatkin's presentation from last years Google I/O and we have now watched it a few times but it isn't clear to us how to do it with "dynamic" recipient lists. What we need are some hints on how to "think" when modeling this.

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• Multiple TinyMCE editors, but only one toolbar?

  - by littlejim84

  Hello there. I've looked around the forum, but cannot seem to find a definite answer to this problem... I'm using jQuery and TinyMCE on our website. I've gone through the docs of TinyMCE, but am still getting lost I'm afraid. We're doing an interface that requires edit-in-place in multiple places in the page. The only thing is, each of these will have all the editing choices from TinyMCE in one toolbar at the top. So, to recap it, it's multiple editors (that each have no toolbars of their own, just a place to edit or select the text) and only one toolbar at the top of the page to control whichever textbox is active at the time. How could this be achieved? Is it even possible? Any help, any push in the right direction, any hints/tips/knowledge at all on this problem would be a great, great help. Thanks, James

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• CMake & ExternalProject: Fails to find specific file

  - by Enrico

  Hi, we have some dependency libraries in our repository. The main part is build with cmake. Now the cmake-makefiles shall build the dependency libraries, which do not have a cmake build system. For one specific library there is a "Makefile.squirrel" which should be used. The cmakelists.txt for that library: cmake_minimum_required (VERSION 2.8) include(ExternalProject) ExternalProject_Add(squirrel, SOURCE_DIR "./" UPDATE_COMMAND "" BUILD_IN_SOURCE 1 CONFIGURE_COMMAND "" BUILD_COMMAND "make -f ${CMAKE_CURRENT_SOURCE_DIR}/Makefile.squirrel" INSTALL_COMMAND "" ) However, when running make I get an error message: [ 93%] Performing build step for 'squirrel,' /bin/sh: make -f /home/enrico/projekte/projectname/dependencies/SQUIRREL2/Makefile.squirrel: not found make[2]: *** [dependencies/SQUIRREL2/squirrel,-prefix/src/squirrel,-stamp/squirrel,-build] Error 127 make[1]: *** [dependencies/SQUIRREL2/CMakeFiles/squirrel,.dir/all] Error 2 make: *** [all] Error 2 ls -lA on /home/enrico/projekte/projectname/dependencies/SQUIRREL2/Makefile.squirrel shows that the file exists. Hardcoding the file path (not an option for the solution) does not work, too. any ideas or hints? Thanks, Enrico

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• GEM Version Requirements Deprecated

  - by Kevin Sylvestre

  When creating a new Rails project using: rails sample Then creating a model using: script/generate model person first_name:string last_name:string Everything is fine. However, if I add any gems to my environment.rb: config.gem "authlogic" And run the same generator, I get the following: /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/rails/gem_dependency.rb:119:Warning: Gem::Dependency#version_requirements is deprecated and will be removed on or after August 2010. The warning just recently appeared (I think), but I would like to fix it if possible. Any hints or similar experiences? Thanks.

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• Authenticate sites with different domain names using the Facebook API

  - by Onema

  We have a CMS that supports multiple sites, one of our features allows our users (The site admin) to connect to the site facebook account to allow status updates, create events and upload pictures to FB from with in the CMS. The authentication needs to occur once since each site may have multiple site admins that do not have access to the site FB user name and password. We use iframe and authenticate using $facebook-require_login() which redirects the user to the FB login and authentication pages. All this works just fine but when the user hits "Allow" the authentication will break as it will only redirect to whatever is in the "Post-Authorize Redirect URL" field making the app obsolete for any other domain except the one in the "Post-Authorize Redirect URL" I know other API's authentication methods like in Vimeo and YouTube will allow you to specify a NEXT parameter which is the equivalent of the "Post-Authorize Redirect URL" and it can be set at run time. How can I make this work for multiple domain names? Any hints on this issue will be of great help

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• iPhone animation: how do I animate the filling up of an area?

  - by Sandeep

  Consider a circle. Now consider a radius of the circle, drawn from the center of the circle towards the right. Now imagine that the radius is rotating about the center of the circle, sweeping out an area as it rotates. My problem is: I want to use iPhone's animation techniques to fill up the swept out area with a different color from the background area of the circle, as the radius rotates from 0 degrees to any chosen number of degrees about the circle. I've looked through the Core Animation API, KeyFrame Animations, etc. but I am not able to find out how to do this. Any hints will be most welcome. Thanks, Sandeep

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• How to Access a Private Variable?

  - by SoulBeaver

  This question isn't meant to sound as blatantly insulting as it probably is right now. This is a homework assignment, and the spec sheet is scarce and poorly designed to say the least. We have a function: double refuel( int liter, GasStation *gs ) { // TODO: Access private variable MaxFuel of gs and decrement. } Sound simple enough? It should be, but the class GasStation comes with no function that accesses the private variable MaxFuel. So how can I access it anyway using the function refuel? I'm not considering creating a function setFuel( int liter ) because the teacher always complains rather energetically if I change his specification. So... I guess I have to do some sort of hack around it, but I'm not sure how to go about this without explicitely changing the only function in GasStation and giving it a parameter so that I can call it here. Any hints perhaps?

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• SL4: Root element is missing

  - by Number8

  Hello, I know this has been asked elsewhere, but none of the questions or answers helped. I open an xml file in my SL 4 app: StreamResouceInfo sri = Application.GetResourceStream(new System.Uri("z.xml", UriKind.Relative)); if (null != sri) { XDocument xDoc = XDocument.Load(sri.Stream); } "Root element is missing" exception. The xml: Hmm, can't seem to post the xml... It is well-formed and valid, with a single root node and all tags closed. Thanks for any hints...

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• How do I send a PDF in a MemoryStream to the printer in .Net?

  - by Ryan ONeill

  I have a PDF created in memory using iTextSharp and contained in a MemoryStream. I now need to translate that MemoryStream PDF into something the printer understands. I've used Report Server in the past to render the pages to the printer format but I cant use it for this project. Is there a native .Net way of doing this? For example, GhostScript would be OK if it was a .Net assembly but I don't want to bundle any non .Net stuff along with my installer. The PrintDocument class in .Net is great for sending content to the printer but I still need to translate it from a PDF stream into GDI at the page level. Any good hints? Thanks in advance Ryan

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• Netbeans-esque retrospective auto-comment/phpDocumentor tool (for Eclipse or standalone)

  - by Andy

  Is there anything similar to netbean's Javadoc auto comment tool for PHP/phpDocumentor/Eclipse? In the netbeans implementation: A dialog pops up and allows you to run through all the members of your class and enter comments, which are added to the source file. It even verifies that there are no parameters you have not accounted for, so you can be sure that your comments are complete. Ideally this would be standalone software, but plugins are OK too :) p.s. netbeans 6+ auto comment was moved/renamed. Now in "Tool-Options", Tab: "Java Code", Javadoc: "Hints" edit: screengrab of the original Netbeans tool:

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• Materialized Query Table in SQL Server 2005

  - by Azho KG

  In DB2 there is a support for Materialized Query Table (MQT). Basicly you write a query and create a MQT. But the difference from View is that the query is pre-executed and resulting data is stored in MQT and there are some options when to refresh/syncronize the MQT with base tables. I want same functionality in SQL Server. Is there a way to achieve same result? I've tables with millions of rows, and I want to show summary (like total # of members, total expense and etc) in dashboard. So I don't want to count every time user gets to dashboard, instead I want to store them in table and I want that table to be refresh each night. Any kind of hints, answers,suggestions and ideas are welcome. Thanks.

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• Execute a PyQt app from an acpi event in linux

  - by alfredozn

  Hi, I want to use a PyQt application to display an image when some acpi event is triggered under linux. I already setting up the configuration for the event and the python scrip is executed when the event is triggered, but when program reach the creation of the QApplication app = QApplication(sys.argv) it stops without error. I tried setting up the same DISPLAY and PATH environment variables as my current user but it doesn't work. This is my event file: event=sony/hotkey SNC 00000001 00000011 action=/etc/acpi/vaio-tools/brightness/sonybright.sh up 2>&1>/tmp/vaio-tools_brightness.log I tried to find some error in the /tmp/vaio-tools_brightness.log but it doesn't log anything after it reach the QApp creation in code. any hints??

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• "Could not find the main class: bla.bla.yada", although specified correctly in the MANIFEST.MF

  - by Bernhard V

  Hi, I'm trying to run a .jar file with the command "java -jar Filename.jar", but I am always getting an error saying "Could not find the main class: bla.bla.yada". I build the whole application with Maven and specified a Main-Class in the MANIFEST.MF. The path in the file is correct and the class also exists at the right location in the jar. The ending .class is omitted in the MANIFEST.MF. I hope this is correct. Do you have any other hints?

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• How can I simulate an anchor click via jquery?

  - by prinzdezibel

  I have a problem with faking an anchor click via jQuery: Why does my thickbox appear the first time I click on the input button, but not the second or third time? Here is my code: <input onclick="$('#thickboxId').click();" type="button" value="Click me"> <a id="thickboxId" href="myScript.php" class="thickbox" title="">Link</a> It does always work when I click directly on the link, but not if I try to activate the thickbox via the input button. This is in FF. For Chrome it seems to work every time. Any hints?

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• HOWTO: Deserialize WCF message using OperationContract

  - by Stefan

  Hi, I succeeded in building a WCF client generated by svcutil.exe from the WSDL. Using the generated client proxy class I can call the web service of an external service supplier. I also succeeded in coding a message inspector, as I need to log both raw XML request and response as full SOAP message to the database. For an emergency szenario I also need to be able to "import" a raw XML response. I found many hints on using XMLSerializer or deserializing WCF messages based on the message contract. But how can I deserialize a raw XML response based on an operation contract? For a first test I use one of the logged raw responses, save it to a file and now try to deserialize it to the response type as generated in the client proxy. Somehow I must succeed in calling DeserializeReply() from class ClientOperation. But how to get there? I happily acced any help as I'm quite new to WCF... TIA, Stefan

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• Script Errors in Silverlight WebBrowser Control

  - by Whiskas

  Hi, I am showing a HTML page with a Flash video player on it in a Silverlight app using the WebBrowser control. The site itself is displayed perfectly and everything works just fine. But when I want to close the player component, I somehow need to completely dispose the current HTML page with the flash player. I tried navigating to about:blank, or even to other pages like google.com before the player component is hidden. But the flash video keeps on playing and the WebBrowser shows several Script Errors, which must be clicked in order to really leave the flash page. Is there any way to instantly "clear" the WebBrowser control or to surpress the Script Errors so that it leaves the html/flash page? In WPF there seem to be some methods for that, but I couldnt find any on the Silverlight WebBrowser control. Any hints are appreciated, Whiskas

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