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• Sonar default, meet "container state was: CONSTRUCTED"

  - by larry cai

  Environment: hudson/sonar/maven2 in ubuntu locally with default parameters And I got the log from hudson below, I can't figure out where is the problem. [INFO] Sonar host: http://localhost:9000 [INFO] Sonar version: 2.0.1 [INFO] [sonar-core:internal {execution: default-internal}] [INFO] Database dialect class org.sonar.api.database.dialect.Derby [INFO] ------------- Analyzing Game of Life business logic module [INFO] ------------------------------------------------------------------------ [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] Can not execute Sonar Embedded error: Can not analyze the project Cannot stop. Current container state was: CONSTRUCTED [INFO] ------------------------------------------------------------------------ [INFO] Trace org.apache.maven.lifecycle.LifecycleExecutionException: Can not execute Sonar And I notice it also has problem when run it command line without hudson mvn sonar:sonar

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• Why array size in llvm created by llvm's internal tools is not good enough for llvm?

  - by vava

  I'm getting strange error message from the following code: ArrayType * arrayType = ArrayType::get(Type::getInt32Ty(ctx), 0); stack = builder->CreateAlloca(arrayType, ConstantArray::get(arrayType, std::vector<Constant *>())); This code compiles fine but it gives me llvm::Value* getAISize(llvm::LLVMContext&, llvm::Value*): Assertion `Amt-getType() == Type::getInt32Ty(Context) && "Malloc/Allocation array size is not a 32-bit integer!"' failed. during execution. What's interesting, is that I never said of what type array size should be, it was created somewhere inside helper functions. So I naturally see no good reason for assert to be there. But I must be doing something wrong anyway, can you help me spot the problem? Thanks in advance. PS. LLVM, as good as it is, lacking documentation tremendously.

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• Rails 3 Server Startup problem with fastercsv

  - by Anand

  I have a rails 2.3.5 app getting upgraded to Rails 3. I did every thing I am required to do for upgrading and when I start the rails server using rails server it gives me this Please switch to Ruby 1.9's standard CSV library. It's FasterCSV plus support for Ruby 1.9's m17n encoding engine. I am using ruby-1.9.2-p0 and have fastercsv (1.5.3) gem installed. with the help of puts statements, i was able to track down where the error occurred. i found that the execution stops at this line Bundler.require(:default, Rails.env) if defined?(Bundler) in application.rb file. I tried many things but none worked .. please help..

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• Fastest way to do mass update

  - by user356004

  Let’s say you have a table with about 5 million records and a nvarchar(max) column populated with large text data. You want to set this column to NULL if SomeOtherColumn = 1 in fastest possible way. The brute force UPDATE does not work very well here because it will create large implicit transaction and take forever. Doing updates in small batches of 50K records at a time works but it’s still taking 47 hrs to complete on beefy 32 core/64GB server. Is there any way to do this update faster? Are there any magic query hints/table options that scarifies something else (like concurrency) in exchange of speed? NOTE: Creating temp table or temp column is not an option because this nvarchar(max) column involves lots of data and so consumes lots of space!

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• Generating a Call Hierarchy for dynamicly invoked method

  - by Maxim Veksler

  Hello, Today's world of dynamic invoke, reflection and runtime injection just doesn't play well with traditional tools such as ctags, doxygen and CDOC. I am searching for a method call hierarchy visualization tool that can display both static and dynamic method invocations. It should be easy to use, light during execution and provide helpful detailed information about the recorded runtime session. Now I guess Callgrind could be considered a valid solution for the family C. What tool / technique could you suggest to create a call graph for both static and dynamic method invocation for JVM based bytecode? The intended end result is a graphical display (preferably interactive) which can show path from main() to each method that was invoked. During research for this post I stumbled upon javashot, it seems that this is the kind of approach I'm aiming at, I would prefer that this would be integrated into a kind of profiler or alike which than can be used from within my IDE (Eclipse, IntelliJ, Netbeans and alike). Thank you, Maxim.

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• Building v8 without JIT

  - by rames

  Hello, I would like to run some tests on v8 with and without JIT to compare performances. I know JIT will improve my average speed performance, but it would be nice for me to have some actual more detailed tests results as I want to work with mobile platforms. I haven't found how to enable or disable JIT like it exists on Squirrelfish (cf. ENABLE_JIT in JavaScriptCore/wtf/Platform.h). Does somebody knows how to do that with v8? Thanks. Alexandre

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• get equation from XML, AS3

  - by VideoDnd

  There's an variable in my swf I want to receive XML. It's an integer value in the form of an equation. How do I receive the XML value for 'formatcount'? My Variable //Variable I want to grab XML<br> //formatcount=int('want xml value to go here'); formatcount=int(count*count/100); Path formatcount = myXML.FORMATCOUNT.text() My XML <?xml version="1.0" encoding="utf-8"?> <SESSION> <TIMER TITLE="speed">1000</TIMER> <COUNT TITLE="starting position">10000</COUNT> <FORMATCOUNT TITLE="ramp">count*count/1000</FORMATCOUNT> </SESSION>

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• Best way to retrieve certain field of all documents returned by a lucen search

  - by Philipp

  Hi, I was wondering what the best way is to retrieve a certain field of all documents returned by a Searcher of Lucene. Background: each document has a date field (written on) and I would like to show a timeline of all found documents, so I need to extract the date (day) field of all the documents I find with the search. I currently retrieve every document using Searcher.doc(int, FieldSelector) having the selector only retrieve the certain field. I have indexed 250k documents, the search itself takes no time and returns about 10k document ids. Retrieving those however, takes 20+ seconds. What can I do to speed things up, but still get all the values I need. Thx in advance Philipp

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• Eclipse + Git: Can't add files to my repository

  - by Stegeman

  I use Eclipse (Helios) with PDT and egit. I have a project without versioning, so I created a git repository for it by doing: Team -> Share Project When I try to add the files of my project to the repository: Team -> Add I get an exception: Failed to add resource to index Failed to add resource to index Exception caught during execution of add command When I add the files manually on the command line, everything is working fine. Any ideas? EDIT: The error eclipse gives is: Caused by: org.eclipse.jgit.errors.ObjectWritingException: Unable to create new object: Z:\eage_layout\.git\objects\60\f30dd232bd6ddaeb198fb11400c2613a072189 at org.eclipse.jgit.storage.file.ObjectDirectoryInserter.insert(ObjectDirectoryInserter.java:100) at org.eclipse.jgit.api.AddCommand.call(AddCommand.java:177) The code I'm running is located on a virtual machine running on CentOs. I'm working on a windows machine and using a samba share to get access to the code on the virtual machine. I've put the filesystem permissions on my .git directory to 777, but still it does not work.

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• Is url.openStream harmful?

  - by Casebash

  I was using the java.net.URL.openStream() method to retrieve content from the server. I recently ran into an issue where the HTTP Response code indicated an error, but instead of throwing an exception, the stream still was read anyway. This caused the error to appear much later in the execution and proved to be a red herring. As far as I can see, when you have opened a stream using this method, there is no way to check the HTTP response code. The only way I could find to handle this properly was to use code such as: HttpURLConnection conn=(HttpURLConnection) url.openConnection() if(conn.getResponseCode()!=HttpStatus.SC_OK) //Raise Exception; InputStream in=conn.getInputStream() So do you agree? Is it possible to use openStream safely, or is it a method that should be avoided at all costs. It is worth noting that Sun uses the method in their tutorial code for reading directly from a URL. Then again, the code throws Exception so it isn't exactly a bastion of good coding practices.

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• Create View using Linked Server db in SQL Server

  - by Muhammad Kashif Nadeem

  How can I create View on Linked Server db. For Example I have a linked server [0.0.0.0] on [1.1.1.1]. Both db servers are SQL Sserver 2005. I want to create View on [1.1.1.1] using table on linked server. EDIT: On creating using full name, [0.0.0.0].db.dbo.table, I am getting this error. SQL Execution Error. Executed SQL statement: SELECT * FROM 0.0.0.0.db.dbo.table (YOu can see brackets are not there.) Error Source: .Net SqlClient Data Provider Error Message: Incorrect syntax near '0.0'. --- part of IP address. I am just creating this in ManagementStudio, not using it because it is not created yet. I Have changed IP. In image you can see there are not brackets around IP but I given it and on error these brackets are removed. Thanks.

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• JQUERY CYCLE - Can I add page links to anchors assigned to Cycle's pager?

  - by christianDuncan

  Hello everyone. Seems I've outdone myself. All the while I was creating this pretty little 'latest news' widget that fades on mouseover of each anchor. Then my colleague says, "Hey, Chris, these links don't work" ...oops. I would like to find out if I can have these anchors take the user to the relvent page on click. Currently Cycle is set to do its hocus pocus on mouseover. This is my Cycle code: $('#newsSlider .slides ul').cycle({ fx: 'fade', speed: 1000, timeout: 0, pager: '.slides-nav', pagerEvent: 'mouseover', pagerAnchorBuilder: function(idx, slide) { // return sel string for existing anchor return '.slides-nav li:eq(' + (idx) + ') a'; } And here is the dev site: http://slg-development.co.uk/Gradient_12859/ Any help would be hugely appriciated. Thanks everyone! Christian

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• A function's static and dynamic parent

  - by legends2k

  I'm reading Thinking in C++ (vol. 2): Whenever a function is called, information about that function is pushed onto the runtime stack in an activation record instance (ARI), also called a stack frame. A typical stack frame contains (1) the address of the calling function (so execution can return to it), (2) a pointer to the ARI of the function’s static parent (the scope that lexically contains the called function, so variables global to the function can be accessed), and (3) a pointer to the function that called it (its dynamic parent). The path that logically results from repetitively following the dynamic parent links is the dynamic chain, or call chain I'm unable to comprehend what the author means as function's static and dynamic parent. Also am not able to differentiate between item 1, 2 or 3. They all seem to be the same. Can someone please explain this passage to me?

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• Is Private Bytes >> Working Set normal?

  - by Jacob

  OK, this may sound weird, but here goes. There are 2 computers, A (Pentium D) and B (Quad Core) with almost the same amount of RAM running Windows XP. If I run the same code on both computers, the allocated private bytes in A never goes down resulting in a crash later on. In B it looks like the private bytes is constantly deallocated and everything looks fine. In both computers, the working set is deallocated and allocated similarly. Could this be an issue with manifests or DLLs (system)? I'm clueless. Also, I compiled the executable on A and ran it on B and it worked. Note: I observed the utilized memory with Process Explorer. Question: During execution (where we have several allocations and deallocations) is it normal for the number of private bytes to be much bigger (1.5 GB vs 70 MB) than the working set?

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• RSS parsing last build Date. Fastest way to do so please.

  - by Paul

  Dim myRequest As System.Net.WebRequest = System.Net.WebRequest.Create(url) Dim myResponse As System.Net.WebResponse = myRequest.GetResponse() Dim rssStream As System.IO.Stream = myResponse.GetResponseStream() Dim rssDoc As New System.Xml.XmlDocument() Try rssDoc.Load(rssStream) Catch nosupport As NotSupportedException Throw nosupport End Try Dim rssItems As System.Xml.XmlNodeList = rssDoc.SelectNodes("rss/channel") 'For i As Integer = 0 To rssItems.Count - 1 Dim rssDetail As System.Xml.XmlNode rssDetail = rssItems.Item(0).SelectSingleNode("lastBuildDate") Folks this is what I'm using to parse an RSS feed for the last updated time. Is there a quicker way? Speed seems to be a bit slow on it as it pulls down the entire feed before parsing.

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• iphone - forcing button to acknowledge touch programmatically

  - by Mike

  When you touch a UIButton it hides for a fraction of second and then it executes its action. This fast "blink" is the feedback the user needs to know that the button has been clicked. In the project I am doing, I need to select the button programmatically, as if the user had clicked it. In other words, the same behavior has the button had been clicked by the user... a fast blink and execution of its action. Is this possible? thanks for any help.

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• Go with Native or using phonegap ?

  - by knightrider

  Hello, I was about to develop iphone app and I want suggestion from the expert since I am totally newbie in it. I have one classified website which is written in php and mysql. What I want to create is Iphone app which can view those classifieds. There will be no complicated function at first version. It will be have different categories and query and display according to the category. And if there's new classified ad, they will get push notification. What I want to know is, what should i go with ? Native or using phonegap ? Is phonegap supports push notification ? Is native app can just get the results through mysql ? or do i need to change it to sql lite ? Any speed different between native and phone gap ? Any advantages and disadvantages ? Thanks.

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• Error in retrieving data from Excel File

  - by Sreejesh Kumar

  I have an excel file. I wanted to pull the data from excel file to SQL Server table. And the data is successfully transferred.In the excel file, I removed a text from one column named "Risk" from one row.The text was lengthy one.now the package execution fails at the source ie from the excel file. The errors are shown as "[Audit [1]] Error: There was an error with output column "Risk" (100) on output "Excel Source Output" (9). The column status returned was: "DBSTATUS_UNAVAILABLE"." and "[Audit [1]] Error: SSIS Error Code DTS_E_INDUCEDTRANSFORMFAILUREONERROR. The "output column "Risk" (100)" failed because error code 0xC0209071 occurred, and the error row disposition on "output column "Risk" (100)" specifies failure on error. An error occurred on the specified object of the specified component. There may be error messages posted before this with more information about the failure." the error occurs only when I remove this particular text from this row.

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• Hadoop: Iterative MapReduce Performance

  - by S.N

  Is it correct to say that the parallel computation with iterative MapReduce can be justified only when the training data size is too large for the non-parallel computation for the same logic? I am aware that the there is overhead for starting MapReduce jobs. This can be critical for overall execution time when a large number of iterations is required. I can imagine that the sequential computation is faster than the parallel computation with iterative MapReduce as long as the memory allows to hold a data set in many cases. Is it the only benefit to use the iterative MapReduce? If not, what are the other benefits could be?

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• How to not increment the build.number in Ant?

  - by dacracot

  I have many targets in my build.xml for Ant. Generally I am running two via a shell script, one to construct the application and one for cleaning up. The shell script checks the exit status of the construction to see if it should clean up or leave the clutter behind so I can determine what went wrong and fix it. So went all is going well, the majority of the time, Ant is executed once for construction and once for clean up. This results in my build.number being incremented for each execution. So in steady state, my build.number increments by 2. How can a tell Ant to not increment the build.number? I would do this for clean up as I haven't built anything. I know the obvious answer of creating a separate script for clean up only, but I'd rather keep the entire build.xml in one file.

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• How can a Delphi TForm / TPersistent object calculate its own deserialization time?

  - by mjustin

  For performance tests I need a way to measure the time needed for a form to load its definition from the DFM. All existing forms inherit a custom form class. To capture the current time, this base class needs overriden methods as "extension points": start of the deserialization process after the deserialization (can be implemented by overriding the Loaded procedure) the moment just before the execution of the OnFormCreate event So the log for TMyForm.Create(nil) could look like: - 00.000 instance created - 00.010 before deserialization - 01.823 after deserialization - 02.340 before OnFormCreate Which TObject (or TComponent) methods are best suited? Maybe there are other extension points in the form creation process, please feel free to make suggestions.

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• Error when running a GWTTestCase using maven gwt plugin

  - by adancu

  Hi, I've created a test which extends GWTTestCase but I'm getting this error: mvn integration-test gwt:test Running com.myproject.test.ui. GwtTestMyFirstTestCase Translatable source found in... [WARN] No source path entries; expect subsequent failures [ERROR] Unable to find type 'java.lang.Object' [ERROR] Hint: Check that your module inherits 'com.google.gwt.core.Core' either directly or indirectly (most often by inheriting module 'com.google.gwt.user.User') Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 2.1 sec <<< FAILURE! GwtTestMyFirstTestCase.java is in /src/test/java, while the GWT module is located in src/main/java. I assume this shouldn't be a problem. I've done everything required according to http://mojo.codehaus.org/gwt-maven-plugin/user-guide/testing.html and of course that my gwt module already has com.google.gwt.core.Core indirectly imported. http://maven.apache.org/maven-v4_0_0.xsd" 4.0.0 com.myproject main jar 0.0.1-SNAPSHOT Main Module <properties> <gwt.module>com.myproject.MainModule</gwt.module> </properties> <parent> <groupId>com.myproject</groupId> <artifactId>app</artifactId> <version>0.1.0-SNAPSHOT</version> </parent> <dependencies> <dependency> <groupId>com.myproject</groupId> <artifactId>app-commons</artifactId> <version>0.0.1-SNAPSHOT</version> </dependency> <dependency> <groupId>com.google.gwt</groupId> <artifactId>gwt-dev</artifactId> <version>${gwt.version}</version> <scope>provided</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-dependency-plugin</artifactId> <configuration> <outputFile>../app/src/main/webapp/WEB-INF/main.tree</outputFile> </configuration> </plugin> <plugin> <groupId>org.codehaus.mojo</groupId> <artifactId>gwt-maven-plugin</artifactId> <executions> <execution> <goals> <goal>test</goal> </goals> </execution> </executions> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-jar-plugin</artifactId> <configuration> <classesDirectory> ${project.build.directory}/${project.build.finalName}/${gwt.module} </classesDirectory> </configuration> </plugin> </plugins> </build> Here is the test case, located in /src/test/java/com/myproject/test/ui public class GwtTestMyFirstTestCase extends GWTTestCase { @Override public String getModuleName() { return "com.myproject.MainModule"; } public void testSomething() { } } Here is the gwt module I'm trying to test, located in src/main/java/com/myproject/MainModule.gwt.xml: <inherits name='com.myproject.Commons' /> <source path="site" /> <source path="com.myproject.test.ui" /> <set-property name="gwt.suppressNonStaticFinalFieldWarnings" value="true" /> <entry-point class='com.myproject.site.SiteModuleEntry' /> Can anyone give me a hint or two about what I'm doing wrong? Thanks in advance.

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• how to preload more than one but not all images of a slideshow with jquery

  - by wtip

  I'd like to create a web based stop motion video player. Basically a slideshow that shows 2-4 images per second. Each image might be a maximum of 20KB. I don't want to preload all images in the slideshow as there might be thousands, however I need to preload more than just the next image in the show as this will not playback fast enough (because of the playback speed the browser needs to be loading more than one image at a time). I've been looking at using the jQuery Cycle Plugin (http://malsup.com/jquery/cycle/) with a addSlide type function but don't know how to make it work. Would something like this might work? -Slideshow starts -image is played back -preloader will attempt to load up to the next 60 images -playback will wait for the next image in line to completely load, but will not wait for all 59 others. The playback / preloading order is important for this application.

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• Is a switch statement the fastest way to implement operator interpretation in Java

  - by Mordan

  Is a switch statement the fastest way to implement operator interpretation in Java public boolean accept(final int op, int x, int val) { switch (op) { case OP_EQUAL: return x == val; case OP_BIGGER: return x > val; case OP_SMALLER: return x < val; default: return true; } } In this simple example, obviously yes. Now imagine you have 1000 operators. would it still be faster than a class hierarchy? Is there a threshold when a class hierarchy becomes more efficient in speed than a switch statement? (in memory obviously not) abstract class Op { abstract public boolean accept(int x, int val); } And then one class per operator.

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• Fetching email using Ruby on Rails

  - by Shreyas Satish

  I need to fetch email from my gmail account using RoR. require 'net/pop' Net::POP3.start('pop.gmail.com', 995, username, password) do |pop| if pop.mails.empty? puts 'No mail.' else #pop.each_mail do |mail| #p mail.header #p mail.pop puts "Mails present" #end end end I get a timeout error. usr/lib/ruby/1.8/timeout.rb:60:in new': execution expired (Timeout::Error) from /usr/lib/ruby/1.8/net/protocol.rb:206:inold_open' from /usr/lib/ruby/1.8/net/protocol.rb:206:in old_open' from /usr/lib/ruby/1.8/net/pop.rb:438:indo_start' from /usr/lib/ruby/1.8/net/pop.rb:432:in `start' from script/mail.rb:4 Thanks and Cheers !

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