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  • NSTableView binding problem

    - by Niklas Ottosson
    I have only just started with XCode (v3.2.2) and Interface Builder and have run into a problem. Here is what I have done: I have made a class to be the datasource of a NSTableView: @interface TimeObjectsDS : NSControl { IBOutlet NSTableView * idTableView; NSMutableArray * timeObjects; } @property (assign) NSMutableArray * timeObjects; @property (assign) NSTableView * idTableView; - (id) init; - (void) dealloc; - (void) addTimeObject: (TimeObj *)timeObject; - (int) count; // NSTableViewDataSource Protocol functions - (int)numberOfRowsInTableView:(NSTableView *)tableView; - (id)tableView:(NSTableView *)tableView objectValueForTableColumn:(NSTableColumn *)tableColumn row: (int)row; I have then bound my NSTableView in the View to this datasource like so: I have also bound the View NSTableView to the Model idTableView variable in Interface Builder seen above In the init function I add a element to the mutable array. This is displayed correctly in the NSTableView when I run the application. However when I add another element to the array (of same type as in init) and try to call [idTableView reloadData] on the View nothing happens. In fact the Model idTableView is null. When printing the variable with NSLog(@"idTableView: %@", idTableView) I get "idTableView: (null)" Im runing out of ideas how to fix this. Any ideas to what I could do to fix the binding?

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  • Different versions of JBoss on the same host

    - by Vladimir Bezugliy
    I have JBoss 4 installed on my PC to directory C:\JBoss4 And environment variable JBOSS_HOME set to this directory: JBOSS_HOME=C:\JBoss4 I need to install JBoss 5.1 on the same PC. I installed it into C:\JBoss51 In order to start JBoss 5.1 on the same host where JBoss 4 was already started, I need to redefine properties jboss.home.dir, jboss.home.url, jboss.service.binding.set: C:\JBoss51\bin\run.sh -Djboss.home.dir=C:/JBoss51 \ -Djboss.home.url=file:/C:/JBoss51 \ -Djboss.service.binding.set=ports-01 But in C:\JBoss51\bin\run.sh I can see following code: … if [ "x$JBOSS_HOME" = "x" ]; then # get the full path (without any relative bits) JBOSS_HOME=`cd $DIRNAME/..; pwd` fi export JBOSS_HOME … runjar="$JBOSS_HOME/bin/run.jar" JBOSS_BOOT_CLASSPATH="$runjar" And this code does not depend either on jboss.home.dir or on jboss.home.dir. So when I start JBoss 5.1 script will use jar files from JBoss 4.3? Is it correct? Should I redefine environment variable JAVA_HOME when I start JBoss 5.1? In this case script will use correct jar files. Or if I redefined properties jboss.home.dir, jboss.home.url then JBoss will not use any variables set in run.sh? How does it works?

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  • Looking for examples of "real" uses of continuations

    - by Sébastien RoccaSerra
    I'm trying to grasp the concept of continuations and I found several small teaching examples like this one from the Wikipedia article: (define the-continuation #f) (define (test) (let ((i 0)) ; call/cc calls its first function argument, passing ; a continuation variable representing this point in ; the program as the argument to that function. ; ; In this case, the function argument assigns that ; continuation to the variable the-continuation. ; (call/cc (lambda (k) (set! the-continuation k))) ; ; The next time the-continuation is called, we start here. (set! i (+ i 1)) i)) I understand what this little function does, but I can't see any obvious application of it. While I don't expect to use continuations all over my code anytime soon, I wish I knew a few cases where they can be appropriate. So I'm looking for more explicitely usefull code samples of what continuations can offer me as a programmer. Cheers!

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  • web service - client classes

    - by Noona
    The web service that I implemented is up and running, when I try to run the client I get the following error with regard to the classes that were generated using wsimport, Caused by: java.security.PrivilegedActionException: com.sun.xml.internal.bind.v2.runtime.IllegalAnnotationsException: 4 counts of IllegalAnnotationExceptions Two classes have the same XML type name "{http://server.agency.hw2/}userJoined". Use @XmlType.name and @XmlType.namespace to assign different names to them. this problem is related to the following location: at hw2.chat.backend.main.generatedfromserver.UserJoined at public javax.xml.bind.JAXBElement hw2.chat.backend.main.generatedfromserver.ObjectFactory.createUserJoined(hw2.chat.backend.main.generatedfromserver.UserJoined) at hw2.chat.backend.main.generatedfromserver.ObjectFactory this problem is related to the following location: at ChatCompany.BackendChatServer.hw2.chat.backend.main.generatedfromserver.UserJoined Two classes have the same XML type name "{http://server.agency.hw2/}userJoinedResponse". Use @XmlType.name and @XmlType.namespace to assign different names to them. this problem is related to the following location: at hw2.chat.backend.main.generatedfromserver.UserJoinedResponse at public javax.xml.bind.JAXBElement hw2.chat.backend.main.generatedfromserver.ObjectFactory.createUserJoinedResponse(hw2.chat.backend.main.generatedfromserver.UserJoinedResponse) But I can't figure out what exactly is meant by the error. I am assuming I need to change something in annotations in this class as pointed out by the compiler: @XmlAccessorType(XmlAccessType.FIELD) @XmlType(name = "userJoinedResponse") public class UserJoinedResponse { } could someone please point out why there's a name collision and what annotations I need to change? thanks

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  • How to call Ajax function recursively.

    - by MAS1
    Hi guys, I want to know how to call Ajax function Recursively. My ajax code is like this, <html> <head> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript"> var step='1'; $.ajax ( { url: 'test1.php', data: {step: step}, success: function(output) { step=eval(output); alert(step); } } ); </script> </head> </html> And php code is like this <?php function writeName() { echo "step=2"; } function ReadName() { echo "In Read Name Function"; } if(isset($_REQUEST['step']) && !empty($_REQUEST['step'])) { $step = $_REQUEST['step']; switch($step) { case '1' : writeName(); break; case '2' : ReadName(); break; default : echo "Empty String"; } } ?> first time this function is get called with value of step variable equal to 1 and Function Write name modified it as 2. Now i want to call this Ajax function with Step variable value equal to 2. So that 2nd php function gets called.

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  • How to localize an app on Google App Engine?

    - by Petri Pennanen
    What options are there for localizing an app on Google App Engine? How do you do it using Webapp, Django, web2py or [insert framework here]. 1. Readable URLs and entity key names Readable URLs are good for usability and search engine optimization (Stack Overflow is a good example on how to do it). On Google App Engine, key based queries are recommended for performance reasons. It follows that it is good practice to use the entity key name in the URL, so that the entity can be fetched from the datastore as quickly as possible. Currently I use the function below to create key names: import re import unicodedata def urlify(unicode_string): """Translates latin1 unicode strings to url friendly ASCII. Converts accented latin1 characters to their non-accented ASCII counterparts, converts to lowercase, converts spaces to hyphens and removes all characters that are not alphanumeric ASCII. Arguments unicode_string: Unicode encoded string. Returns String consisting of alphanumeric (ASCII) characters and hyphens. """ str = unicodedata.normalize('NFKD', unicode_string).encode('ASCII', 'ignore') str = re.sub('[^\w\s-]', '', str).strip().lower() return re.sub('[-\s]+', '-', str) This works fine for English and Swedish, however it will fail for non-western scripts and remove letters from some western ones (like Norwegian and Danish with their œ and ø). Can anyone suggest a method that works with more languages? 2. Translating templates Does Django internationalization and localization work on Google App Engine? Are there any extra steps that must be performed? Is it possible to use Django i18n and l10n for Django templates while using Webapp? The Jinja2 template language provides integration with Babel. How well does this work, in your experience? What options are avilable for your chosen template language? 3. Translated datastore content When serving content from (or storing it to) the datastore: Is there a better way than getting the *accept_language* parameter from the HTTP request and matching this with a language property that you have set with each entity?

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  • Getting error while opening form in visual studio 2005

    - by Ravisha
    i am getting below excetion on opening a form on visual studio work bench Its not always but sometime it opens without any problem Does anyone has a solution for this? The path is not of a legal form. Hide at System.IO.Path.NormalizePathFast(String path, Boolean fullCheck) at System.IO.Path.NormalizePath(String path, Boolean fullCheck) at System.IO.Path.GetFullPathInternal(String path) at System.Reflection.AssemblyName.GetAssemblyName(String assemblyFile) at Microsoft.VisualStudio.Design.VSTypeResolutionService.AddProjectDependencies(Project project) at Microsoft.VisualStudio.Design.VSTypeResolutionService.AssemblyEntry.get_Assembly() at Microsoft.VisualStudio.Design.VSTypeResolutionService.AssemblyEntry.Search(String fullName, String typeName, Boolean ignoreTypeCase, Assembly& assembly, String description) at Microsoft.VisualStudio.Design.VSTypeResolutionService.SearchProjectEntries(AssemblyName assemblyName, String typeName, Boolean ignoreTypeCase, Assembly& assembly) at Microsoft.VisualStudio.Design.VSTypeResolutionService.GetType(String typeName, Boolean throwOnError, Boolean ignoreCase, ReferenceType refType) at Microsoft.VisualStudio.Design.Serialization.CodeDom.AggregateTypeResolutionService.GetType(String name, Boolean throwOnError, Boolean ignoreCase) at Microsoft.VisualStudio.Design.Serialization.CodeDom.AggregateTypeResolutionService.GetType(String name, Boolean throwOnError) at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.GetType(ITypeResolutionService trs, String name, Dictionary2 names) at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.FillStatementTable(IDesignerSerializationManager manager, IDictionary table, Dictionary2 names, CodeStatementCollection statements, String className) at System.ComponentModel.Design.Serialization.TypeCodeDomSerializer.Deserialize(IDesignerSerializationManager manager, CodeTypeDeclaration declaration) at System.ComponentModel.Design.Serialization.CodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager manager) at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager serializationManager) at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.DeferredLoadHandler.Microsoft.VisualStudio.TextManager.Interop.IVsTextBufferDataEvents.OnLoadCompleted(Int32 fReload)

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  • Invalidating Memcached Keys on save() in Django

    - by Zack
    I've got a view in Django that uses memcached to cache data for the more highly trafficked views that rely on a relatively static set of data. The key word is relatively: I need invalidate the memcached key for that particular URL's data when it's changed in the database. To be as clear as possible, here's the meat an' potatoes of the view (Person is a model, cache is django.core.cache.cache): def person_detail(request, slug): if request.is_ajax(): cache_key = "%s_ABOUT_%s" % settings.SITE_PREFIX, slug # Check the cache to see if we've already got this result made. json_dict = cache.get(cache_key) # Was it a cache hit? if json_dict is None: # That's a negative Ghost Rider person = get_object_or_404(Person, display = True, slug = slug) json_dict = { 'name' : person.name, 'bio' : person.bio_html, 'image' : person.image.extra_thumbnails['large'].absolute_url, } cache.set(cache_key) # json_dict will now exist, whether it's from the cache or not response = HttpResponse() response['Content-Type'] = 'text/javascript' response.write(simpljson.dumps(json_dict)) # Make sure it's all properly formatted for JS by using simplejson return response else: # This is where the fully templated response is generated What I want to do is get at that cache_key variable in it's "unformatted" form, but I'm not sure how to do this--if it can be done at all. Just in case there's already something to do this, here's what I want to do with it (this is from the Person model's hypothetical save method) def save(self): # If this is an update, the key will be cached, otherwise it won't, let's see if we can't find me try: old_self = Person.objects.get(pk=self.id) cache_key = # Voodoo magic to get that variable old_key = cache_key.format(settings.SITE_PREFIX, old_self.slug) # Generate the key currently cached cache.delete(old_key) # Hit it with both barrels of rock salt # Turns out this doesn't already exist, let's make that first request even faster by making this cache right now except DoesNotExist: # I haven't gotten to this yet. super(Person, self).save() I'm thinking about making a view class for this sorta stuff, and having functions in it like remove_cache or generate_cache since I do this sorta stuff a lot. Would that be a better idea? If so, how would I call the views in the URLconf if they're in a class?

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  • Loading data from a dictionary of dictionaries into an array in Objective C for an iphone app

    - by Kat
    I have a UINavigationController consisting of a tableview I want to load some data into. I have a dictionary plist containing Dictionaries for each Train Line which in turn have dictionaries for each station with the relevant information along with one string lineName. I need to collect the station Names keys and add them to an array to populate my table (This is working). The line names are stored as a string in my lines dictionary with the key being "lineName" Root->| | |->TrainLine1(Dictionary)->| | |-> lineName (String) | |-> Station1 (Dictionary) | |-> Station2 (Dictionary) | | |->TrainLine2(Dictionary)->| | |-> lineName (String) | |-> Station1 (Dictionary) | |-> Station2 (Dictionary) Am I going about this the wrong way? Should I reorganise my plist? The code below crashes the app. - (void)viewDidLoad { self.title = @"Train Lines"; NSString *path = [[NSBundle mainBundle] pathForResource:@"lineDetails" ofType:@"plist"]; NSDictionary *dictionary = [[NSDictionary alloc] initWithContentsOfFile:path]; NSMutableArray *array = [[NSMutableArray alloc] init]; NSMutableArray *lineNameArray = [[NSMutableArray alloc] init]; NSString *key; for (key in dictionary) { NSMutableDictionary *secondDictionary = [NSDictionary dictionaryWithDictionary:[dictionary valueForKey:key]]; [lineNameArray addObject:key]; NSLog(@"Adding this in array:%@", key); [array addObject:[secondDictionary objectForKey:kLineNameKey]]; } self.trainLines = array; self.trainLineKeys = lineNameArray; NSLog(@"Array contents:%@", self.trainLineKeys); [lineNameArray release]; [array release]; [dictionary release]; [super viewDidLoad]; }

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  • Are CMake GLOB and source_group compatible?

    - by jwfearn
    I'm using CMake 2.8.0 (on Windows) with the "Visual Studio 10 Win64" generator. GLOB and source_group don't seem to work together. Is there a way to get this to work? I use file( GLOB ... ) to create a list of .cpp files and then use source_group to create a filter in the generated Visual Studio project: # C:\Users\My Name\hello\CMakeLists.txt cmake_minimum_required( VERSION 2.8 ) project( hello_proj ) file( GLOB HELLO_SRCS *.cpp ) message( "HELLO_SRCS="${HELLO_SRCS} ) #source_group( hello_group ${HELLO_SRCS} ) #line 6: uncomment to get error add_executable( hello_exec ${HELLO_SRCS} ) with line 6 commented out, the project is generated fine: HELLO_SRCS=C:/Users/My Name/hello/hello.cppC:/Users/My Name/hello/print_line.cpp -- Configuring done -- Generating done -- Build files have been written to: C:/Users/My Name/hello with line 6 un-commented, I get an error: HELLO_SRCS=C:/Users/My Name/hello/hello.cppC:/Users/My Name/hello/print_line.cpp CMake Error at CMakeLists.txt:6 (source_group): source_group Unknown argument "C:/Users/My Name/hello/hello.cpp". Perhaps the FILES keyword is missing. -- Configuring incomplete, errors occurred! I notice that output value of ${HELLO_SRCS} does not seem to contain any delimiters between the file names, nor does it have quotes or other delimiters wrapping the file names which contain spaces. Does that have anything to do with my problem? Renaming all directories to avoid spaces is not really an option.

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  • Banning by IP with php/mysql

    - by incrediman
    I want to be able to ban users by IP. My idea is to keep a list of IP's as rows in an BannedIPs table (the IP column would be an index). To check users' IP's against the table, I will keep a session variable called $_SESSION['IP'] for each session. If on any request, $_SESSION['IP'] doesn't match $_SERVER['REMOTE_ADDR'], I will update $_SESSION['IP'] and check the BannedIPs table to see if the IP is banned. (A flag will also be saved as a session variable specifying whether or not the user is banned) Here are the things I'm wondering: Does that sound like a good strategy with regards to speed and security (would someone be able to get around the IP ban somehow, other than changing IP's)? What's the best way to structure a mysql query that checks to see if a row exists? That is, what's the best way to query the db to see if a row with a certain IP exists (to check if it's banned)? Should I save the IP's as integers or strings? Note that... I estimate there will be between 1,000-10,000 banned IP's stored in the database. $_SERVER['REMOTE_ADDR'] is the IP from which the current request was sent.

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  • How should I go about implementing a points-to analysis in Maude?

    - by reprogrammer
    I'm going to implement a points-to analysis algorithm. I'd like to implement this analysis mainly based on the algorithm by Whaley and Lam. Whaley and Lam use a BDD based implementation of Datalog to represent and compute the points-to analysis relations. The following lists some of the relations that are used in a typical points-to analysis. Note that D(w, z) :- A(w, x),B(x, y), C(y, z) means D(w, z) is true if A(w, x), B(x, y), and C(y, z) are all true. BDD is the data structure used to represent these relations. Relations input vP0 (variable : V, heap : H) input store (base : V, field : F, source : V) input load (base : V, field : F, dest : V) input assign (dest : V, source : V) output vP (variable : V, heap : H) output hP (base : H, field : F, target : H) Rules vP(v, h) :- vP0(v, h) vP(v1, h) :- assign(v1, v2), vP(v2, h) hP(h1, f,h2) :- store(v1, f, v2), vP(v1, h1), vP(v2, h2) vP(v2, h2) :- load(v1, f, v2), vP(v1, h1), hP(h1, f, h2) I need to understand if Maude is a good environment for implementing points-to analysis. I noticed that Maude uses a BDD library called BuDDy. But, it looks like that Maude uses BDDs for a different purpose, i.e. unification. So, I thought I might be able to use Maude instead of a Datalog engine to compute the relations of my points-to analysis. I assume Maude propagates independent information concurrently. And this concurrency could potentially make my points-to analysis faster than sequential processing of rules. But, I don't know the best way to represent my relations in Maude. Should I implement BDD in Maude myself, or Maude's internal unification based on BDD has the same effect?

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  • Place Query Results into Array then Implode?

    - by jason
    Basically I pull an Id from table1, use that id to find a site id in table2, then need to use the site ids in an array, implode, and query table3 for site names. I cannot implode the array correctly first I got an error, then used a while loop. With the while loop the output simply says: Array $mysqli = mysqli_connect("server", "login", "pass", "db"); $sql = "SELECT MarketID FROM marketdates WHERE Date = '2010-04-04 00:00:00' AND VenueID = '2'"; $result = mysqli_query($mysqli, $sql) or die(mysqli_error($mysqli)); $dates_id = mysqli_fetch_assoc ( $result ); $comma_separated = implode(",", $dates_id); echo $comma_separated; //This Returns 79, which is correct. $sql = "SELECT SIteID FROM bookings WHERE BSH_ID = '1' AND MarketID = '$comma_separated'"; $result = mysqli_query($mysqli, $sql) or die(mysqli_error($mysqli)); // This is where my problems start $SIteID = array(); while ($newArray = mysqli_fetch_array($result, MYSQLI_ASSOC)) { $SIteID[] = $newArray[SIteID]; } $locationList = implode(",",$SIteID); ?> Basically what I need to do is correctly move the query results to an array that I can implode and use in a 3rd query to pull names from table3.

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  • Bash Templating: How to build configuration files from templates with Bash?

    - by FractalizeR
    Hello. I'm writting a script to automate creating configuration files for Apache and PHP for my own webserver. I don't want to use any GUIs like CPanel or ISPConfig. I have some templates of Apache and PHP configuration files. Bash script needs to read templates, make variable substitution and output parsed templates into some folder. What is the best way to do that? I can think of several ways. Which one is the best or may be there are some better ways to do that? I want to do that in pure Bash (it's easy in PHP for example) 1)http://stackoverflow.com/questions/415677/how-to-repace-variables-in-a-nix-text-file template.txt: the number is ${i} the word is ${word} script.sh: #!/bin/sh #set variables i=1 word="dog" #read in template one line at the time, and replace variables #(more natural (and efficient) way, thanks to Jonathan Leffler) while read line do eval echo "$line" done < "./template.txt" BTW, how do I redirect output to external file here? Do I need to escape something if variables contain, say, quotes? 2) Using cat & sed for replacing each variable with it's value: Given template.txt: The number is ${i} The word is ${word} Command: cat template.txt | sed -e "s/\${i}/1/" | sed -e "s/\${word}/dog/" Seems bad to me because of the need to escape many different symbols and with many variables the line will be tooooo long. Can you think of some other elegant and safe solution?

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  • Trouble with an depreciated constrictor visual basic visual studio 2010

    - by VBPRIML
    My goal is to print labels with barcodes and a date stamp from an entry to a zebra TLP 2844 when the user clicks the ok button/hits enter. i found what i think might be the code for this from zebras site and have been integrating it into my program but part of it is depreciated and i cant quite figure out how to update it. below is what i have so far. The printer is attached via USB and the program will also store the entered numbers in a database but i have that part done. any help would be greatly Appreciated.   Public Class ScanForm      Inherits System.Windows.Forms.Form    Public Const GENERIC_WRITE = &H40000000    Public Const OPEN_EXISTING = 3    Public Const FILE_SHARE_WRITE = &H2      Dim LPTPORT As String    Dim hPort As Integer      Public Declare Function CreateFile Lib "kernel32" Alias "CreateFileA" (ByVal lpFileName As String,                                                                           ByVal dwDesiredAccess As Integer,                                                                           ByVal dwShareMode As Integer, <MarshalAs(UnmanagedType.Struct)> ByRef lpSecurityAttributes As SECURITY_ATTRIBUTES,                                                                           ByVal dwCreationDisposition As Integer, ByVal dwFlagsAndAttributes As Integer,                                                                           ByVal hTemplateFile As Integer) As Integer          Public Declare Function CloseHandle Lib "kernel32" Alias "CloseHandle" (ByVal hObject As Integer) As Integer      Dim retval As Integer           <StructLayout(LayoutKind.Sequential)> Public Structure SECURITY_ATTRIBUTES          Private nLength As Integer        Private lpSecurityDescriptor As Integer        Private bInheritHandle As Integer      End Structure            Private Sub OKButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OKButton.Click          Dim TrNum        Dim TrDate        Dim SA As SECURITY_ATTRIBUTES        Dim outFile As FileStream, hPortP As IntPtr          LPTPORT = "USB001"        TrNum = Me.ScannedBarcodeText.Text()        TrDate = Now()          hPort = CreateFile(LPTPORT, GENERIC_WRITE, FILE_SHARE_WRITE, SA, OPEN_EXISTING, 0, 0)          hPortP = New IntPtr(hPort) 'convert Integer to IntPtr          outFile = New FileStream(hPortP, FileAccess.Write) 'Create FileStream using Handle        Dim fileWriter As New StreamWriter(outFile)          fileWriter.WriteLine(" ")        fileWriter.WriteLine("N")        fileWriter.Write("A50,50,0,4,1,1,N,")        fileWriter.Write(Chr(34))        fileWriter.Write(TrNum) 'prints the tracking number variable        fileWriter.Write(Chr(34))        fileWriter.Write(Chr(13))        fileWriter.Write(Chr(10))        fileWriter.Write("A50,100,0,4,1,1,N,")        fileWriter.Write(Chr(34))        fileWriter.Write(TrDate) 'prints the date variable        fileWriter.Write(Chr(34))        fileWriter.Write(Chr(13))        fileWriter.Write(Chr(10))        fileWriter.WriteLine("P1")        fileWriter.Flush()        fileWriter.Close()        outFile.Close()        retval = CloseHandle(hPort)          'Add entry to database        Using connection As New SqlClient.SqlConnection("Data Source=MNGD-LABS-APP02;Initial Catalog=ScannedDB;Integrated Security=True;Pooling=False;Encrypt=False"), _        cmd As New SqlClient.SqlCommand("INSERT INTO [ScannedDBTable] (TrackingNumber, Date) VALUES (@TrackingNumber, @Date)", connection)            cmd.Parameters.Add("@TrackingNumber", SqlDbType.VarChar, 50).Value = TrNum            cmd.Parameters.Add("@Date", SqlDbType.DateTime, 8).Value = TrDate            connection.Open()            cmd.ExecuteNonQuery()            connection.Close()        End Using          'Prepare data for next entry        ScannedBarcodeText.Clear()        Me.ScannedBarcodeText.Focus()      End Sub

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  • Use SQL Result to Query second time and grab more results via php

    - by maxwell
    I am grabbing a list of school names from a database. When the user clicks on the school name, i want the code to fetch 2-3 other attributes related to the school name that the user has clicked on. My code for the single school name list: $query = mysql_query("Select schoolname, product, username, password from credentials c join products p on p.productid = c.productid join schools s on s.schoolid = c.schoolid join icons i on i.productid = p.productid order by s.schoolname"); echo '<ul>'; while($row = mysql_fetch_array($query)) { echo "<li> <a href='#'>" . $row['schoolname'] . "</a> </li>"; } echo ''; Current Output: School A School A School B School B School B School C School C Expected Output: School name displayed only once (distinct won't work because each school name has 2-3 product credentials School A School B School C Ability for User to click on a school. then the school names underneath will move down (toggle effect) and user can see product, username and password displayed for the school clicked (for example: user clicked on School A) School A productname1, username, password productname2, username, password School B School C

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  • Sql serve Full Text Search with Containstable is very slow when Used in JOIN!

    - by Bob
    Hello, I am using sql 2008 full text search and I am having serious issues with performance depending on how I use Contains or ContainsTable. Here are sample: (table one has about 5000 records and there is a covered index on table1 which has all the fields in the where clause. I tried to simplify the statements so forgive me if there is syntax issues.) Scenario 1: select * from table1 as t1 where t1.field1=90 and t1.field2='something' and Exists(select top 1 * from containstable(table1,*, 'something') as t2 where t2.[key]=t1.id) results: 10 second (very slow) Scenario 2: select * from table1 as t1 join containstable(table1,*, 'something') as t2 on t2.[key] = t1.id where t1.field1=90 and t1.field2='something' results: 10 second (very slow) Scenario 3: Declare @tbl Table(id uniqueidentifier primary key) insert into @tbl select {key] from containstable(table1,*, 'something') select * from table1 as t1 where t1.field1=90 and t1.field2='something' and Exists(select id from @tbl as tbl where id=req1.id) results: fraction of a second (super fast) Bottom line, it seems if I use Containstable in any kind of join or where clause condition of a select statement that also has other conditions, the performance is really bad. In addition if you look at profiler, the number of reads from the database goes to the roof. But if I first do the full text search and put results in a table variable and use that variable everything goes super fast. The number of reads are also much lower. It seems in "bad" scenarios, somehow it gets stuck in a loop which causes it to read many times from teh database but of course I don't understant why. Now the question is first of all whyis that happening? and question two is that how scalable table variables are? what if it results to 10s of thousands of records? is it still going to be fast. Any ideas? Thanks

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  • CharField values disappearing after save (readonly field)

    - by jamida
    I'm implementing simple "grade book" application where the teacher would be able to update the grades w/o being allowed to change the students' names (at least not on the update grade page). To do this I'm using one of the read-only tricks, the simplest one. The problem is that after the SUBMIT the view is re-displayed with 'blank' values for the students. I'd like the students' names to re-appear. Below is the simplest example that exhibits this problem. (This is poor DB design, I know, I've extracted just the relevant parts of the code to showcase the problem. In the real example, student is in its own table but the problem still exists there.) models.py class Grade1(models.Model): student = models.CharField(max_length=50, unique=True) finalGrade = models.CharField(max_length=3) class Grade1OForm(ModelForm): student = forms.CharField(max_length=50, required=False) def __init__(self, *args, **kwargs): super(Grade1OForm,self).__init__(*args, **kwargs) instance = getattr(self, 'instance', None) if instance and instance.id: self.fields['student'].widget.attrs['readonly'] = True self.fields['student'].widget.attrs['disabled'] = 'disabled' def clean_student(self): instance = getattr(self,'instance',None) if instance: return instance.student else: return self.cleaned_data.get('student',None) class Meta: model=Grade1 views.py from django.forms.models import modelformset_factory def modifyAllGrades1(request): gradeFormSetFactory = modelformset_factory(Grade1, form=Grade1OForm, extra=0) studentQueryset = Grade1.objects.all() if request.method=='POST': myGradeFormSet = gradeFormSetFactory(request.POST, queryset=studentQueryset) if myGradeFormSet.is_valid(): myGradeFormSet.save() info = "successfully modified" else: myGradeFormSet = gradeFormSetFactory(queryset=studentQueryset) return render_to_response('grades/modifyAllGrades.html',locals()) template <p>{{ info }}</p> <form method="POST" action=""> <table> {{ myGradeFormSet.management_form }} {% for myform in myGradeFormSet.forms %} {# myform.as_table #} <tr> {% for field in myform %} <td> {{ field }} {{ field.errors }} </td> {% endfor %} </tr> {% endfor %} </table> <input type="submit" value="Submit"> </form>

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  • Cannot spawn an erlang supervisor from the shell.

    - by drfloob
    I've implemented a gen_server and supervisor: test_server and test_sup. I want to test them from the shell/CLI. I've written their start_link functions such that their names are registered locally. I've found that I can spawn the test_server from the command line just fine, but a spawned test_sup does nothing whatsoever. Why is this? For example, I can spawn a test_server by executing: 1> spawn(test_server, start_link, []). <0.39.0> 2> registered(). [...,test_server,...] I can interact with the server, and everything appears fine. However, if I try to do the same thing with test_sup, no new names/Pids are registered, and it looks like my test_server was not spawned at all. I'd assume I coded an error in my supervisor, but this method of starting my supervisor works perfectly fine: 1> {ok, Pid}= test_sup:start_link([]). {ok, <0.39.0>} 2> unlink(Pid). true 3> registered(). [...,test_server,test_sup,...] Why is it that I can spawn a gen_server but not a supervisor?

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  • Beginner SQL question: querying gold and silver tag badges in Stack Exchange Data Explorer

    - by polygenelubricants
    I'm using the Stack Exchange Data Explorer to learn SQL, but I think the fundamentals of the question is applicable to other databases. I'm trying to query the Badges table, which according to Stexdex (that's what I'm going to call it from now on) has the following schema: Badges Id UserId Name Date This works well for badges like [Epic] and [Legendary] which have unique names, but the silver and gold tag-specific badges seems to be mixed in together by having the same exact name. Here's an example query I wrote for [mysql] tag: SELECT UserId as [User Link], Date FROM Badges Where Name = 'mysql' Order By Date ASC The (slightly annotated) output is: as seen on stexdex: User Link Date --------------- ------------------- // all for silver except where noted Bill Karwin 2009-02-20 11:00:25 Quassnoi 2009-06-01 10:00:16 Greg 2009-10-22 10:00:25 Quassnoi 2009-10-31 10:00:24 // for gold Bill Karwin 2009-11-23 11:00:30 // for gold cletus 2010-01-01 11:00:23 OMG Ponies 2010-01-03 11:00:48 Pascal MARTIN 2010-02-17 11:00:29 Mark Byers 2010-04-07 10:00:35 Daniel Vassallo 2010-05-14 10:00:38 This is consistent with the current list of silver and gold earners at the moment of this writing, but to speak in more timeless terms, as of the end of May 2010 only 2 users have earned the gold [mysql] tag: Quassnoi and Bill Karwin, as evidenced in the above result by their names being the only ones that appear twice. So this is the way I understand it: The first time an Id appears (in chronological order) is for the silver badge The second time is for the gold Now, the above result mixes the silver and gold entries together. My questions are: Is this a typical design, or are there much friendlier schema/normalization/whatever you call it? In the current design, how would you query the silver and gold badges separately? GROUP BY Id and picking the min/max or first/second by the Date somehow? How can you write a query that lists all the silver badges first then all the gold badges next? Imagine also that the "real" query may be more complicated, i.e. not just listing by date. How would you write it so that it doesn't have too many repetition between the silver and gold subqueries? Is it perhaps more typical to do two totally separate queries instead? What is this idiom called? A row "partitioning" query to put them into "buckets" or something?

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  • get all running processes info using QProcess

    - by kaycee
    few days ago i asked about how to get all running processes in the system using QProcess. i found a command line that can output all processes to a file: C:\WINDOWS\system32\wbem\wmic.exe" /OUTPUT:C:\ProcessList.txt PROCESS get Caption this will create C:\ProcessList.txt file contains all running processes in the system. i wonder how can i run it using QProcess and take its output to a variable. it seems every time i try to run it and read nothing happens: QString program = "C:\\WINDOWS\\system32\\wbem\\wmic.exe"; QStringList arguments; arguments << "/OUTPUT:C:\\ProcessList.txt" <<"PROCESS"<< "get"<< "Caption"; process->setStandardOutputFile("process.txt"); process->start(program,arguments); QByteArray result = process->readAll(); i prefer not to create process.txt at all and to take all the output to a variable...

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  • Twitter Typeahead only shows only 5 results

    - by user3685388
    I'm using the Twitter Typeahead version 0.10.2 autocomplete but I'm only receiving 5 results from my JSON result set. I can have 20 or more results but only 5 are shown. What am I doing wrong? var engine = new Bloodhound({ name: "blackboard-names", prefetch: { url: "../CFC/Login.cfc?method=Search&returnformat=json&term=%QUERY", ajax: { contentType: "json", cache: false } }, remote: { url: "../CFC/Login.cfc?method=Search&returnformat=json&term=%QUERY", ajax: { contentType: "json", cache: false }, }, datumTokenizer: Bloodhound.tokenizers.obj.whitespace('value'), queryTokenizer: Bloodhound.tokenizers.whitespace }); var promise = engine.initialize(); promise .done(function() { console.log("done"); }) .fail(function() { console.log("fail"); }); $("#Impersonate").typeahead({ minLength: 2, highlight: true}, { name: "blackboard-names", displayKey: 'value', source: engine.ttAdapter() }).bind("typeahead:selected", function(obj, datum, name) { console.log(obj, datum, name); alert(datum.id); }); Data: [ { "id": "1", "value": "Adams, Abigail", "tokens": [ "Adams", "A", "Ad", "Ada", "Abigail", "A", "Ab", "Abi" ] }, { "id": "2", "value": "Adams, Alan", "tokens": [ "Adams", "A", "Ad", "Ada", "Alan", "A", "Al", "Ala" ] }, { "id": "3", "value": "Adams, Alison", "tokens": [ "Adams", "A", "Ad", "Ada", "Alison", "A", "Al", "Ali" ] }, { "id": "4", "value": "Adams, Amber", "tokens": [ "Adams", "A", "Ad", "Ada", "Amber", "A", "Am", "Amb" ] }, { "id": "5", "value": "Adams, Amelia", "tokens": [ "Adams", "A", "Ad", "Ada", "Amelia", "A", "Am", "Ame" ] }, { "id": "6", "value": "Adams, Arik", "tokens": [ "Adams", "A", "Ad", "Ada", "Arik", "A", "Ar", "Ari" ] }, { "id": "7", "value": "Adams, Ashele", "tokens": [ "Adams", "A", "Ad", "Ada", "Ashele", "A", "As", "Ash" ] }, { "id": "8", "value": "Adams, Brady", "tokens": [ "Adams", "A", "Ad", "Ada", "Brady", "B", "Br", "Bra" ] }, { "id": "9", "value": "Adams, Brandon", "tokens": [ "Adams", "A", "Ad", "Ada", "Brandon", "B", "Br", "Bra" ] } ]

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  • pattern matching in .Net consistent with IsolatedStorageFile.GetFileNames() pattern matching

    - by Mick N
    Is the pattern matching logic used by this API exposed for reuse somewhere in the .Net Framework? Something of the form FilePatternMatch( string searchPattern, stringfileNameToTest ) is what I'm looking for. I'm implementing a temporary workaround for WP7 not filtering the results for this overload and I'd like the solution to both provide a consistent experience and avoid reinventing this functionality if it is exposed. If the behaviour is not exposed for reuse, a regular expression solution (like glob pattern matching in .NET) will suffice and would save me spending the time to test the fine details of what the behaviour should be. Perhaps one of the answers posted in the thread linked above is correct. Since I haven't confirmed the exact behaviour as yet, I wasn't able to determine this at a glance. Feel free to point me to one of those answers if you know it is behaviouraly an exact match to the API referenced in the question title. I could assume the pattern matching is consistent with how DOS handled * and ? in 8.3 file names (I'm familiar with behavioural nuances of that implementation), but it's reasonable to assume Microsoft has evolved pattern matching behaviour for file names in the decade+ since so I thought I would check before proceeding on that assumption.

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  • Silently catch windows error popups when calling System.load() in java

    - by Marcelo Morales
    I have a Java Swing application, which needs to load some native libraries in windows. The problem is that the client could have different versions of those libraries. In one recent version, either the names changed or the order on which the libraries must be loaded changed. To keep up, we iterated over all possible library names but some fail to load (due to it's nonexistence or because another must be loaded previously). This idea works on older Windows but on latter ones it shows a error popup. I saw on question 4058303 (Silently catch windows error popups when calling LoadLibrary) that I need to call SetErrorMode but I am not sure how to call SetErrorMode from jna. I tried to follow the idea from question 11038595 but I am not sure how to proceed. public interface CKernel32 extends Kernel32 { CKernel32 INSTANCE = (CKernel32) Native.loadLibrary("kernel32", CKernel32.class); // TODO: HELP: HOW define the SetErrorMode function } How do I define (from the SetErrorMode documentation): UINT WINAPI SetErrorMode( _In_ UINT uMode ); in the line marked as TODO: HELP:? Thanks in advance

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  • Do servlet containers prevent web applications from causing each other interference and how do they do it?

    - by chrisbunney
    I know that a servlet container, such as Apache Tomcat, runs in a single instance of the JVM, which means all of its servlets will run in the same process. I also know that the architecture of the servlet container means each web application exists in its own context, which suggests it is isolated from other web applications. As depicted here: Accepting that each web application is isolated, I would expect that you could create 2 copies of an identical web application, change the names and context paths of each (as well as any other relevant configuration), and run them in parallel without one affecting the other. The answers to this question appear to support this view. However, a colleague disagrees based on their experience of attempting just that. They took a web application and tried to run 2 separate instances (with different names etc) in the same servlet container and experienced issues with the 2 instances conflicting (I'm unable to elaborate more as I wasn't involved in that work). Based on this, they argue that since the web applications run in the same process space, they can't be isolated and things such as class attributes would end up being inadvertently shared. This answer appears to suggest the same thing The two views don't seem to be compatible, so I ask you: Do servlet containers prevent web applications deployed to the same container from conflicting with each other? If yes, How do they do this? If no, Why does interference occur? and finally, Under what circumstances could separate web applications conflict and cause each other interference?, perhaps scenarios involving resources on the file system, native code, or database connections?

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