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• Where and which data to save into session on an ASP.NET MVC 2 application?

  - by Shaharyar

  I am having some trouble saving the state of my current view. Currenly I have several selectlist calling their own Action method on the controller that returns the Index view with the filtered model based on the values of the selectlist. I have also written a little FileResult action that creates a csv file based on the current model. But I am only covering one selectlist right now as I only save the value of selectList1 into the session and access it with Session["SelectListValue1"] What are the best practices in this situation? Should I redo the entire (each action for each SelectList) part? Should I save each SelectLists value into the session and check if it's null? Or should I just save the Lambda Expression into the session and modify it during every call?

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• My JVM crahes when i run my program.

  - by rgksugan

  I have written a program to process packets. The program runs well if its run alone but when i integrate it to my main project the jvm crashes and shows the below result. What is the problem? # # An unexpected error has been detected by HotSpot Virtual Machine: # # EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x6d7dcf6e, pid=4328, tid=4068 # # Java VM: Java HotSpot(TM) Client VM (1.5.0_16-b02 mixed mode, sharing) # Problematic frame: # V [jvm.dll+0x9cf6e] # # An error report file with more information is saved as hs_err_pid4328.log # # If you would like to submit a bug report, please visit: # http://java.sun.com/webapps/bugreport/crash.jsp #

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• Add jar to EAR in Eclipse

  - by Gerard

  I have several projects in an EAR in Eclipse. These projects themselves have dependency jar's on the build path marked as "do not export, do not contribute to others". Now in Eclipse I add jar's to the EAR via the EAR properties "Java EE Module Dependencies". I browse to the jar (add jar) and click ok. The jar is added to the list. When I click apply, the added jar is gone from the list, it cannot be found in other properties, it is contained in the hidden folder .settings in the file org.eclipse.wst.common.component. This behaviour does not make much sense to me, what am I missing?

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• Converting app to MVC and running it in both console and gui

  - by terence6

  I have a simple java gui calculator, with 3 number systems (there are some bugs but that doesn't matter now). Currently all code is in one file. My task is to rewrite it as MVC, and add possibility to run it in either gui or console mode. How should I divide this program to organise it as M-V-C ? Is it written properly enough to add console functionality to it? (guess I'll have to change all methods invoking to JLabel Output to something simply storing an output String as a model argument and then having View to get it). Here's the starting code : http://paste.pocoo.org/show/224566/ Here's what I already have : Main : http://paste.pocoo.org/show/224567/ Model : http://paste.pocoo.org/show/224570/ View : http://paste.pocoo.org/show/224569/ Controller : http://paste.pocoo.org/show/224568/ I don't have view in my model so I can't call to Output. That's the first problem I can see.

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• Reference platform specific System.Data.SQLite

  - by Dmitriy Nagirnyak

  I am using SQLite for the unit testing and might use it as a database for local development/staging. The System.Data.SQLite has basically 2 versions: x86 and x64. Correct one should be used for the specific platform. I have 64 bit Win7, other guys in the team might use 32-bit OSs. The server's platform is not known at this stage. If I use 32-bit version of the assembly on 64-bit platform I get BadImageFormatException: Could not load file or assembly 'System.Data.SQLite'. I believe similar will happen trying to use 64-bit assembly on 32-bit platform. So my question is what is the best way to reference the SQLite assembly so that it does not depend on the platform and people can just use it? It is ok to use 32-bit version of assembly on a 64-bit platform (Maybe there is a switch for that somewhere?).

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• How to hide a Mono application on the OSX Dock

  - by Chris

  I have a Mono application that should not show on the dock, but will occasionally show a window. I want neither menu bar nor dock icon to show for this application. I have my application wrapped in an app bundle, and my info.plist file has the LSUIElement set to "1". This does not seem to be hiding my application from the Dock. I have tried also calling osascript with the following info in a Process.Start: osascript -e 'tell application "System Events" to set visible of process "myapp" to false' This returns a System Event error code: -10006. Thus far, I've had no luck finding out what that means. I've also tried all the standard Hide() and Visibility = false stuff inside Mono. Anyone found a workaround for this, or have an idea a direction I can look in? For the most part, working in Mono has been straightforward .Net coding, but this has me stumped.

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• Reading correctly alphanumeric fields into R

  - by gd047

  A tab-delimited text file, which is actually an export (using bcp) of a database table, is of that form: 102 1 01 e113c 3224.96 12 102 1 01 e185 101127.25 12 102 2 01 e185 176417.90 12 102A 3 01 e185 26261.03 12 I tried to import it in R with a command like data <- read.delim("C:\\test.txt", header = FALSE, sep = "\t") The problem is that the 3rd column which is actually a varchar field (alphanumeric) is mistakenly read as integer (as there are no letters in the entire column) and the leading zeros disappeared. The same thing happened when I imported the data directly from the database, using odbcConnect. Again that column was read as integer. str(data) $ code: int 1 1 1 1 1 1 6 1 1 8 ... How can I import such a dataset in R correctly, so as to be able to safely populate that db table again, after doing some data manipulations?

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• Variable 'app' in url-pattern for servlet mapping

  - by Brian

  I'm learning Spring MVC (and servlets in general) and following springsource's mvc-ajax example, which uses annotated controller methods. It appears that there is only one url-pattern (in web.xml) mapped to a servlet in that example: /app/* I've deployed the app as a WAR file, and the actual, ugly URL I'm requesting is http://127.0.0.1:8080/org.springframework.samples.mvc.ajax-1.0.0-20100407.233245-1/account. So, it appears that 'app' in '/app/*' is a variable corresponding to 'org.springframework.samples.mvc.ajax-1.0.0-20100407.233245-1', however, it isn't universal because it isn't usable in my own app, and it contradicts my understanding that url-pattern contains the portion of the URL after the app name. So, what is 'app'? Where is it configured?

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• SSRS function returns #Error if value of field is null

  - by jen-fields

  Thanks in advance for any and all assistance. My code is: Public Function StripHTML(value As String) As String Return System.Text.RegularExpressions.Regex.Replace(value, "<(.|\n)*?", "") End Function Then I call the function from a textbox. This works great unless there are nulls in the dataset. I tried to compensate for the nulls, but the RDLC file generates an error message that it can't display the subreport. Public Function StripHTML(value As String) As String if isnothing(value) then return value else Return System.Text.RegularExpressions.Regex.Replace(value, "<(.|\n)*?", "") end if End Function I also tried to tell it to return " " if null. I had no luck... Any ideas? and thanks again.

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• NetBeans not finding JasperReports scriptlet

  - by Sean

  I'm using JasperReports 3.7.6 with NetBeans 6.9.1 and iReport 3.7.6. I have a report that uses scriptlets. When I run it from iReport everything is fine because I can tell iReport where to find the .jar file with the scriptlets. When I run that same report from a JSF-2.0 application the fields that rely on the scriptlet are not being populated correctly - i.e. the scriptlet isn't being called. I've tried putting the scriptlet in the project's library folder and I've tried copying the package containing the scriptlet into the project. Neither has worked. I'm not sure how I can get the report to call the scriptlets when it is run from my JSF project. Can anyone shed some light on this for me?

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• Building a specific piece of Android platform?

  - by Chrisc

  Hi, I have been trying to build only the "/libcore" directory of the Android platform. When I try mmm libcore I end up with the following output: ============================================ PLATFORM_VERSION_CODENAME=REL PLATFORM_VERSION=2.1-update1 TARGET_PRODUCT=generic TARGET_BUILD_VARIANT=eng TARGET_SIMULATOR=false TARGET_BUILD_TYPE=release TARGET_ARCH=arm HOST_ARCH=x86 HOST_OS=linux HOST_BUILD_TYPE=release BUILD_ID=ECLAIR ============================================ make: Entering directory `/home/chris/android/platform' target Prebuilt: (out/target/product/generic/system/etc/security/cacerts.bks) host Prebuilt: run-core-tests-on-ri (out/host/linux-x86/obj/EXECUTABLES/run-core-tests-on-ri_intermediates/run-core-tests-on-ri) target Prebuilt: run-core-tests (out/target/product/generic/obj/EXECUTABLES/run-core-tests_intermediates/run-core-tests) Copy: out/target/product/generic/system/etc/apns-conf.xml Copying: out/target/common/obj/JAVA_LIBRARIES/core_intermediates/classes-full-debug.jar Copying: out/target/common/obj/JAVA_LIBRARIES/core-tests_intermediates/classes-full-debug.jar /bin/bash: jar: command not found make: *** [out/host/common/core-tests.jar] Error 127 make: *** Deleting file `out/host/common/core-tests.jar' make: Leaving directory `/home/chris/android/platform' Does anyone have any suggestions on what Error 127 is, or another method I can go about building "libcore" without having to build the entire platform again? Thanks, Chris

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• Android - Convert Color Resource to Color in Domain Object

  - by Steve

  I have a domain object, where I created a method to return a text color based on the internal state of the domain object. I have defined the colors in a color.xml file as resources. The problem I have now, is that I would like to return a Color object instead of a resource ID from the domain object method. This way I can set the text color of a TextView by just calling textView.setTextColor(domainObj.getTextColor()) since it expects a Color object and not a resource ID. Currently, in an Activity, I can call getResources().getColor(domainObj.getTextColorResource()) to convert a resource ID to a color, but I would like this done in the domain object and I am not sure how I would do this when I do not have access to the getResources method. Are there any cleaner options than passing in a Resource object into the method, or domain object? Thanks

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• Latex: Extracting the sty files of all the used packages

  - by Zlatko

  Hi. So after writhing a large .tex file and using many packages I want to archive everything. Not just the .tex .jpg files but also the .sty files. This is because sometimes some options in the sty files are changed, and then I can't compile the file. The "problem" is that in using Ubuntu, I already installed all the packages in my system. I don't want to have to copy the manually. Is there a program that can do this automatically. Tnx.

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• javascript to jquery

  - by Angeline Aarthi

  How do I write the following line which is in javascript in jQuery? var variablename = new functionname('some variable'); This is my js code: var rt = new ResizeableTextbox('myRT'); I need to use this in the following code segment: if($(this).text() =='String') { $("<label id=labelstr"+stringinc+" >"+label+"</label>").appendTo(".menu li"); $("<input id=inputstr"+stringinc+" type= 'text' ></input>").appendTo(".menu li"); //in place of this I need that javascript code. } How do I do that? The function Resizeable is defined in a separate js file. Please help me out.

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• Piping SoX in Python - subprocess alternative?

  - by Cochise Ruhulessin

  I use SoX in an application. The application uses it to apply various operations on audiofiles, such as trimming. This works fine: from subprocess import Popen, PIPE kwargs = {'stdin': PIPE, 'stdout': PIPE, 'stderr': PIPE} pipe = Popen(['sox','-t','mp3','-', 'test.mp3','trim','0','15'], **kwargs) output, errors = pipe.communicate(input=open('test.mp3','rb').read()) if errors: raise RuntimeError(errors) This will cause problems on large files hower, since read() loads the complete file to memory; which is slow and may cause the pipes' buffer to overflow. A workaround exists: from subprocess import Popen, PIPE import tempfile import uuid import shutil import os kwargs = {'stdin': PIPE, 'stdout': PIPE, 'stderr': PIPE} tmp = os.path.join(tempfile.gettempdir(), uuid.uuid1().hex + '.mp3') pipe = Popen(['sox','test.mp3', tmp,'trim','0','15'], **kwargs) output, errors = pipe.communicate() if errors: raise RuntimeError(errors) shutil.copy2(tmp, 'test.mp3') os.remove(tmp) So the question stands as follows: Are there any alternatives to this approach, aside from writing a Python extension to the Sox C API?

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• ffmpeg-php permission denied on localhost

  - by user572271

  Hello, I am very new to php. I recently setup php on my mac and I am trying to setup ffmpeg-php to convert various videos to flv or other formats as desired. I used this tutorial FFmpeg Mac Installation and I got ffmpeg to work using the terminal, however, when I try to encode a movie using php I get an error. In my apache error_log file it says permission denied next to the flv file (shown below). FFmpeg version 0.6, Copyright (c) 2000-2010 the FFmpeg developers built on Dec 30 2010 08:36:24 with gcc 4.2.1 (Apple Inc. build 5646) (dot 1) configuration: --prefix=/usr/local --enable-shared --disable-mmx --enable-libmp3lame --enable-gpl --enable-libfaad --enable-zlib --enable-libvorbis --enable-libfaac --enable-nonfree libavutil 50.15. 1 / 50.15. 1 libavcodec 52.72. 2 / 52.72. 2 libavformat 52.64. 2 / 52.64. 2 libavdevice 52. 2. 0 / 52. 2. 0 libswscale 0.11. 0 / 0.11. 0 Seems stream 1 codec frame rate differs from container frame rate: 1200.00 (1200/1) - 30.00 (30/1) Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/myApple/Sites/AdHere/test.mov': Metadata: major_brand : qt minor_version : 537199360 compatible_brands: qt Duration: 00:00:02.04, start: 0.000000, bitrate: 1109 kb/s Stream #0.0(eng): Audio: aac, 44100 Hz, stereo, s16, 97 kb/s Stream #0.1(eng): Video: h264, yuv420p, 640x480, 1027 kb/s, 30.15 fps, 30 tbr, 600 tbn, 1200 tbc /Users/myApple/Sites/AdHere/movteststuff.flv: Permission denied I have no idea what the problem is. I am using the following php code: <?php extension_loaded('ffmpeg') or die('Error in loading ffmpeg'); $ffmpegInstance = new ffmpeg_movie('test.AVI'); echo "getDuration: " . $ffmpegInstance->getDuration() . "<br>getFrameCount: " . $ffmpegInstance->getFrameCount() . "<br>getFrameRate: " . $ffmpegInstance->getFrameRate() . "<br>getFilename: " . $ffmpegInstance->getFilename() . "<br>getComment: " . $ffmpegInstance->getComment() . "<br>getTitle: " . $ffmpegInstance->getTitle() . "<br>getAuthor: " . $ffmpegInstance->getAuthor() . "<br>getCopyright: " . $ffmpegInstance->getCopyright() . "<br>getArtist: " . $ffmpegInstance->getArtist() . "<br>getGenre: " . $ffmpegInstance->getGenre() . "<br>getTrackNumber: " . $ffmpegInstance->getTrackNumber() . "<br>getYear: " . $ffmpegInstance->getYear() . "<br>getFrameHeight: " . $ffmpegInstance->getFrameHeight() . "<br>getFrameWidth: " . $ffmpegInstance->getFrameWidth() . "<br>getPixelFormat: " . $ffmpegInstance->getPixelFormat() . "<br>getBitRate: " . $ffmpegInstance->getBitRate() . "<br>getVideoBitRate: " . $ffmpegInstance->getVideoBitRate() . "<br>getAudioBitRate: " . $ffmpegInstance->getAudioBitRate() . "<br>getAudioSampleRate: " . $ffmpegInstance->getAudioSampleRate() . "<br>getVideoCodec: " . $ffmpegInstance->getVideoCodec() . "<br>getAudioCodec: " . $ffmpegInstance->getAudioCodec() . "<br>getAudioChannels: " . $ffmpegInstance->getAudioChannels() . "<br>hasAudio: " . $ffmpegInstance->hasAudio(); exec('ffmpeg -i /Users/myApple/Sites/AdHere/test.mov /Users/myApple/Sites/AdHere/movteststuff.flv'); ?> I am able to see various parameters like filename, frameheight, framewidth, which leads me to believe that ffmpeg-php is kind of working, but maybe I am just doing something wrong in the exec() command. Anyone have any ideas. I have been struggling with setting up ffmpeg for quite some time now. Thanks! -Jon

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• Better way to write this regex to match multi-ordered property list?

  - by Andrew Philips

  I've been whacking on this regex for a while, trying to build something that can pick out multiple ordered property values (DTSTART, DTEND, SUMMARY) from an .ics file. I have other options (like reading one line at a time and scanning), but wanted to build a single regex that can handle the whole thing. SAMPLE PERL # There has got to be a better way... my $x1 = '(?:^DTSTART[^\:]*:(?<dts>.*?)$)'; my $x2 = '(?:^DTEND[^\:]*:(?<dte>.*?)$)'; my $x3 = '(?:^SUMMARY[^\:]*:(?<dtn>.*?)$)'; my $fmt = "$x1.*$x2.*$x3|$x1.*$x3.*$x2|$x2.*$x1.*$x3|$x2.*$x3.*$x1|$x3.*$x1.*$x2|$x3.*$x2.*$x1"; if ($evts[1] =~ /$fmt/smo) { printf "lines:\n==>\n%s\n==>\n%s\n==>\n%s\n", $+{dts}, $+{dte}, $+{dtn}; } else { print "Failed.\n"; } SAMPLE DATA BEGIN:VEVENT UID:0A5ECBC3-CAFB-4CCE-91E3-247DF6C6652A TRANSP:OPAQUE SUMMARY:Gandalf_flinger1 DTEND:20071127T170005 DTSTART,lang=en_us:20071127T103000 DTSTAMP:20100325T003424Z X-APPLE-EWS-BUSYSTATUS:BUSY SEQUENCE:0 END:VEVENT SAMPLE OUTPUT lines: == 20071127T103000 == 20071127T170005 == Gandalf_flinger1

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• django admin gives warning "Field 'X' doesn't have a default value"

  - by noam

  I have created two models out of an existing legacy DB , one for articles and one for tags that one can associate with articles: class Article(models.Model): article_id = models.AutoField(primary_key=True) text = models.CharField(max_length=400) class Meta: db_table = u'articles' class Tag(models.Model): tag_id = models.AutoField(primary_key=True) tag = models.CharField(max_length=20) article=models.ForeignKey(Article) class Meta: db_table = u'article_tags' I want to enable adding tags for an article from the admin interface, so my admin.py file looks like this: from models import Article,Tag from django.contrib import admin class TagInline(admin.StackedInline): model = Tag class ArticleAdmin(admin.ModelAdmin): inlines = [TagInline] admin.site.register(Article,ArticleAdmin) The interface looks fine, but when I try to save, I get: Warning at /admin/webserver/article/382/ Field 'tag_id' doesn't have a default value

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• How to catch FTP errors? e.g., socket.error: [Errno 10060]

  - by Johnson

  I'm using the ftplib module to upload files: files = [ a.txt , b.txt , c.txt ] s = ftplib.FTP(ftp_server , ftp_user , ftp_pw) # Connect to FTP for i in range(len(files)): f = open(files[i], 'rb') stor = 'stor ' + files[i] s.storbinary(stor, f) f.close() # close file s.quit() # close ftp How do I catch the following error? socket.error: [Errno 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond And what other errors are common when using the FTP module that I should also catch? Thanks for any help or pointers.

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• Django syncdb not making tables for my app

  - by Rosarch

  It used to work, and now it doesn't. python manage.py syncdb no longer makes tables for my app. From settings.py: INSTALLED_APPS = ( 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.sites', 'mysite.myapp', 'django.contrib.admin', ) What could I be doing wrong? The break appeared to coincide with editing this model in models.py, but that could be total coincidence. I commented out the lines I changed, and it still doesn't work. class MyUser(models.Model): user = models.ForeignKey(User, unique=True) takingReqSets = models.ManyToManyField(RequirementSet, blank=True) takingTerms = models.ManyToManyField(Term, blank=True) takingCourses = models.ManyToManyField(Course, through=TakingCourse, blank=True) school = models.ForeignKey(School) # minCreditsPerTerm = models.IntegerField(blank=True) # maxCreditsPerTerm = models.IntegerField(blank=True) # optimalCreditsPerTerm = models.IntegerField(blank=True) UPDATE: When I run python manage.py loadddata initial_data, it gives an error: DeserializationError: Invalid model identifier: myapp.SomeModel Loading this data had worked fine before. This error is thrown on the very first data object in the data file.

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• How to create trunk directory in existing svn repo without a trunk, and move all files to new trunk?

  - by stupakov

  Hi all, I've got an svn repo with no trunk dir. I'd like to create the trunk and branches dirs, and move all my files (currently in the root) into trunk. Creating trunk works just fine: macbook[601] # svn mkdir trunk A trunk macbook[602] # svn commit trunk Adding trunk Committed revision 67. moving everything into trunk fails: macbook[604] # svn move * trunk svn: Cannot copy path 'trunk' into its own child 'trunk/trunk' is there a way to do this without giving it all the file and dir names individually? There are threads describing how to do this with TortoiseSVN, but i'd like to know the right way to do it with the svn commandline. Thanks.

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• SmartGWT Widgets not displaying properly

  - by Holograham

  I have a basic GWT Maven project going. I added SmartGWT and started playing around with some widgets and nothing displays correctly. The ListGrid seems to somewhat render but things are off and even data isnt showing up (though the rows respond to indicate there is data within the row). Sorting arrows dont appear but are clickable, and filters are wildy off. Whats causing this. I deleted everything in the .css file. GWT newbie here.

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• Grunt usemin with templates

  - by gang

  Given the following directory structure: – Gruntfile.js – app |– index.php |– js |– css |– templates |– template.php – dist How can I configure grunt usemin to update the references to styles and scripts in my template file relative to the index.php which uses the template? currently the tasks look like this: useminPrepare: { html: '<%= yeoman.app %>/templates/template.php', options: { dest: '<%= yeoman.dist %>' } }, usemin: { html: ['<%= yeoman.dist %>/{,*/}*.php'], css: ['<%= yeoman.dist %>/css/*.css'], options: { dirs: ['<%= yeoman.dist %>'] } } And the blocks inside of the template look like this: <!-- build:js js/main.js --> <script src="js/script1.js"></script> <script src="js/script2.js"></script> <!-- endbuild -->

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• Running tasks in the background with lower CPU priority

  - by Brendon Muir

  I have a feature in my CMS that allows a user to upload a zip file full of images and the server will extract them and insert each one into an image gallery. I've noticed that this grinds up the CPU quite severely and causes other requests to slow down. I'm thinking of using the delayed_job plugin to delegate each image addition into the background, but I also want to give that process a lower CPU priority so that it doesn't bog down the server. I'm pretty confident in the delaying part of the exercise, but the throttling part is where I'm stuck. Is there a ruby way of lowering the priority of a method call? It's the image resizing that causes the CPU chew. Any ideas welcome :)

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• The type already contains a definition for 'Zehut'

  - by iTayb

  The problem exists in my editme.aspx page. Error 1 The type 'editme' already contains a definition for 'Zehut' C:\Documents and Settings\Itay.ITAYB-5A14B8105\My Documents\Visual Studio 2008\WebSites\WebSite2\editme.aspx.cs 110 20 C:\...\WebSite2\ Error 3 Ambiguity between 'editme.Zehut' and 'editme.Zehut(object, System.Web.UI.WebControls.ServerValidateEventArgs)' C:\Documents and Settings\Itay.ITAYB-5A14B8105\My Documents\Visual Studio 2008\WebSites\WebSite2\editme.aspx.cs 44 13 C:\...\WebSite2\ I can't understand where there is a second Zehut method. This is the only zehut method in the whole file. Here is the code: http://pastebin.com/xzDcg1RB It happened just out of the blue. It worked fine for a month or so.

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