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  • Debugging a Google Web Toolkit application that has an error when deployed on Google App Engine

    - by gerdemb
    I have a Google Web Toolkit application that I am deploying to Google App Engine. In the deployed application, I am getting a JavaScript error Uncaught TypeError: Cannot read property 'f' of null. This sounds like the JavaScript equivalent of a Java NullPointerException. The problem is that the GWT JavaScript is obfuscated, so it's impossible to debug in the browser and I can't reproduce the same problem in hosted mode where I could use the Java debugger. I think the reason I'm only seeing the error on the deployed application is that the database I'm using on the GAE server is triggering something differently than the test database I'm using during testing and development. So, any ideas about the best way to proceed? I've thought of the following things: Deploy a non-obsfucated version of my application. Despite a lot of Googling, I can't figure out how to do this using the automatic deploy script provided with the Google Eclipse Plugin. Does anyone know? Download and copy my GAE data to the local server Somehow point my development code to use the GAE server for data instead of the local test database. This seems like the best idea... Can anyone suggest how to proceed here? Finally, is there a way to catch these JavaScript errors on the production server and log them somewhere? Without logging, I won't have anyway to know if my users are having errors that don't occur on the server. The GWT.log() function is automatically stripped out of the production code...

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  • delete row from selected gridview and database

    - by user175084
    i am trying to delete a row from the gridview and database... It should be deleted if a delte linkbutton is clicked in the gridview.. I am gettin the row index as follows: protected void LinkButton1_Click(object sender, EventArgs e) { LinkButton btn = (LinkButton)sender; GridViewRow row = (GridViewRow)btn.NamingContainer; if (row != null) { LinkButton LinkButton1 = (LinkButton)sender; // Get reference to the row that hold the button GridViewRow gvr = (GridViewRow)LinkButton1.NamingContainer; // Get row index from the row int rowIndex = gvr.RowIndex; string str = rowIndex.ToString(); //string str = GridView1.DataKeys[row.RowIndex].Value.ToString(); RemoveData(str); //call the delete method } } now i want to delete it... so i am having problems with this code.. i get an error Must declare the scalar variable "@original_MachineGroupName"... any suggestions private void RemoveData(string item) { SqlConnection conn = new SqlConnection(@"Data Source=JAGMIT-PC\SQLEXPRESS; Initial Catalog=SumooHAgentDB;Integrated Security=True"); string sql = "DELETE FROM [MachineGroups] WHERE [MachineGroupID] = @original_MachineGroupID; SqlCommand cmd = new SqlCommand(sql, conn); cmd.Parameters.AddWithValue("@original_MachineGroupID", item); conn.Open(); cmd.ExecuteNonQuery(); conn.Close(); } Blockquote <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:SumooHAgentDBConnectionString %>" SelectCommand="SELECT MachineGroups.MachineGroupID, MachineGroups.MachineGroupName, MachineGroups.MachineGroupDesc, MachineGroups.TimeAdded, MachineGroups.CanBeDeleted, COUNT(Machines.MachineName) AS Expr1, DATENAME(month, (MachineGroups.TimeAdded - 599266080000000000) / 864000000000) + SPACE(1) + DATENAME(d, (MachineGroups.TimeAdded - 599266080000000000) / 864000000000) + ', ' + DATENAME(year, (MachineGroups.TimeAdded - 599266080000000000) / 864000000000) AS Expr2 FROM MachineGroups FULL OUTER JOIN Machines ON Machines.MachineGroupID = MachineGroups.MachineGroupID GROUP BY MachineGroups.MachineGroupID, MachineGroups.MachineGroupName, MachineGroups.MachineGroupDesc, MachineGroups.TimeAdded, MachineGroups.CanBeDeleted" DeleteCommand="DELETE FROM [MachineGroups] WHERE [MachineGroupID] =@original_MachineGroupID" > <DeleteParameters> <asp:Parameter Name="@original_MachineGroupID" Type="Int16" /> <asp:Parameter Name="@original_MachineGroupName" Type="String" /> <asp:Parameter Name="@original_MachineGroupDesc" Type="String" /> <asp:Parameter Name="@original_CanBeDeleted" Type="Boolean" /> <asp:Parameter Name="@original_TimeAdded" Type="Int64" /> </DeleteParameters> </asp:SqlDataSource> I still get an error : Must declare the scalar variable "@original_MachineGroupID"

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  • Pass first element of jsp list to javascript

    - by Lucian Enache
    Ok so I'm trying to access the first element of a JSP list, here's what I've come up with so far without any kind of luck: onclick="alert('<%=list[0]%>');" What's the best approach to access the first element and eventually to pass it to a javascript variable/function ? I've heard that the <% %> tags are deprecated and some are suggesting relaying on JSTL/EL how can one use those without having to iterate the entire list and put a breakpoint for the iterators ?

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  • Auto-Completion in Unix VI editor

    - by IllustratedInsomnia
    Hey guys, after using graphical IDE's like Visual Studio, I'm used to pressing CTRL+Space to auto-complete a variable or function name. Now, I know such a thing isn't completely possible in VI, but I heard there was a list of commands that could be mapped that allowed automatic completion of variables and functions in the current file opened. Does anyone know what this sequence is? Thanks in advance.

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  • how to get child nodes in xsl

    - by ppp
    here my code- <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:template match="ArrayOfLinkEntity" name="bindLink"> <ul> <xsl:for-each select="LinkEntity[ParentLinkId=0]"> <li> <xsl:variable name="linkId" select="LinkId"/> <xsl:variable name="child" select="count(/ArrayOfLinkEntity/LinkEntity[ParentLinkId=$linkId])"/> <xsl:value-of select="$child"/> <xsl:choose> <xsl:when test="($child &gt; 0)"> <a href="#" data-flexmenu="flexmenu1" onclick="javascript:setPageLinkId({$linkId});"> <xsl:value-of select="LinkTitle"/> <img src="../images/down.gif" border="0"/> </a> </xsl:when> <xsl:otherwise > <a href="#" onclick="javascript:setPageLinkId({$linkId});"> <xsl:value-of select="LinkTitle"/> </a> </xsl:otherwise> </xsl:choose> </li> </xsl:for-each> </ul> </xsl:template> </xsl:stylesheet> but I am getting $child=0 always.but there exists children. my xml structure- <ArrayOfLinkEntity xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <LinkEntity> <EntityId>00000000-0000-0000-0000-000000000000</EntityId> <LinkId>1</LinkId> <SequenceNo>1</SequenceNo> <ParentLinkId>0</ParentLinkId> <LinkTitle>Home</LinkTitle> <SubLink /> </LinkEntity> ... </ArrayOfLinkEntity> What should I do? Please suggest.

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  • Removing a Preceding Backslash from Apostrophes

    - by John
    Hello, When I add a comment using the variable below, apostrophes are printed with a backslash in front of them. How can I get rid of the backslashes? Thanks in advance, John Example of printed result: My roommate\'s brother\'s ex-girlfriend\'s aunt drive a Toyota. $comment = mysql_real_escape_string($_POST['comment']);

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  • Keyword Selection Background?

    - by Irwin
    I just installed MSVS2010 Ultimate & I've noticed something which is somewhat annoying & conflicting with my syntax highlighting, as can be seen: As can be seen, when a keyword/function/variable/etc is highlighted all other instances of the aforementioned are highlighted too. This is somewhat annoying. Is there any way to disable this?

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  • Rubyists: What is this called?

    - by Matt Darby
    Say I have a pool of enumerables that I want to group by an attribute: cars = Car.all.group_by(&:color) Then I want to iterate over those cars like so: cars.inject([]) do |stack, (color, cars)| stack << cars.each do |car| ... end end What is the term for the block variable extension (between the parentheses)?

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  • Shopping Cart in Flex 4

    - by chchrist
    I am trying to code a shopping cart using Flex 4. I am at the design process and I need to figure out which design pattern to use. I am thinking of using the Singleton pattern. I will have a Product Value Object where I'll save each product's values and the I'll push each product to an array variable in my Singleton class. Is my logic OK? Is there a better way? Thanks in advance

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  • Python float copy question

    - by SJA
    Hi, I'm puzzled by some behaviour I'm seeing when copying a float array member into another variable - please help! For example data_entry[1] = 9.6850069951 new_value = data_entry[1] <comment> #print both 9.6850069951 9.6850663300 I'm aware of the problem of binary storage of floats but I thought with a direct copy of memory we would end up with the same value. Any ideas? I need better precision than this! thanks in advance Stuart

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  • Parallel.Foreach loop creating multiple db connections throws connection errors?

    - by shawn.mek
    Login failed. The login is from an untrusted domain and cannot be used with Windows authentication I wanted to get my code running in parallel, so I changed my foreach loop to a parallel foreach loop. It seemed simple enough. Each loop connects to the database, looks up some stuff, performs some logic, adds some stuff, closes the connection. But I get the above error? I'm using my local sql server and entity framework (each loop uses it's own context). Is there some problem with connecting multiple times using the same local login or something? How did I get around this? I have (before trying to covert to a parallel.foreach loop) split my list of objects that I am foreach looping through into four groups (separate csv files) and run four concurrent instances of my program (which ran faster overall than just one, thus the idea for parallel). So it seems connecting to the db shouldn't be a problem? Any ideas? EDIT: Here's before var gtgGenerator = new CustomGtgGenerator(); var connectionString = ConfigurationManager.ConnectionStrings["BioEntities"].ConnectionString; var allAccessionsFromObs = _GetAccessionListFromDataFiles(collectionId); ForEach(cloneIdAndAccessions in allAccessionsFromObs) DoWork(gtgGenerator, taxonId, organismId, cloneIdAndAccessions, connectionString)); after var gtgGenerator = new CustomGtgGenerator(); var connectionString = ConfigurationManager.ConnectionStrings["BioEntities"].ConnectionString; var allAccessionsFromObs = _GetAccessionListFromDataFiles(collectionId); Parallel.ForEach(allAccessionsFromObs, cloneIdAndAccessions => DoWork(gtgGenerator, taxonId, organismId, cloneIdAndAccessions, connectionString)); Inside the DoWork I use the BioEntities using (var bioEntities = new BioEntities(connectionString)) {...}

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  • Arithmetic operators and function calling in C

    - by Robert Dalton
    I'm not quite sure why I can't do double a = (float) my_Function(45) / 2048 / 2340 / 90; printf("%.4",a); // prints out 0.00 But instead I have to use one more variable as: double a = (float) my_Function(45); double b = (float) a / 2048 / 2340 / 90; printf("%.4",b); // prints out the correct value

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  • How to camelcase decibels?

    - by Roddy
    The standard abbreviations for decibels is "dB" (note the case!) So, if I have a variable, holding (for instance) a maximum dB value, how best to name it? maxDbValue maxdBValue maxDecibelValue something else? Each has disdvantages - #1 swaps the case of the unit, #2 doesn't clearly split max from dB, and #3 is verbose... I think #1 feels best, but...???

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  • Issue binding Image Source dependency property

    - by Archana R
    Hello, I have created a custom control for ImageButton as <Style TargetType="{x:Type Button}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type Local:ImageButton}"> <StackPanel Height="Auto" Orientation="Horizontal"> <Image Margin="0,0,3,0" Source="{Binding ImageSource}" /> <TextBlock Text="{TemplateBinding Content}" /> </StackPanel> </ControlTemplate> </Setter.Value> </Setter> </Style> ImageButton class looks like public class ImageButton : Button { public ImageButton() : base() { } public ImageSource ImageSource { get { return base.GetValue(ImageSourceProperty) as ImageSource; } set { base.SetValue(ImageSourceProperty, value); } } public static readonly DependencyProperty ImageSourceProperty = DependencyProperty.Register("Source", typeof(ImageSource), typeof(ImageButton)); } However I'm not able to bind the ImageSource to the image as: (This code is in UI Folder and image is in Resource folder) <Local:ImageButton x:Name="buttonBrowse1" Width="100" Margin="10,0,10,0" Content="Browse ..." ImageSource="../Resources/BrowseFolder.bmp"/> But if i take a simple image it gets displayed if same source is specified. Can anyone tell me what shall be done?

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  • pthread and child process data sharing in C

    - by mustafabattal
    hi everyone, my question is somewhat conceptual, how is parent process' data shared with child process created by a "fork()" call or with a thread created by "pthread_create()" for example, are global variables directly passed into child process and if so, does modification on that variable made by child process effect value of it in parent process? i appreciate partial and complete answers in advance, if i'm missing any existing resource, i'm sorry, i've done some search on google but couldn't find good results thanks again for your time and answers

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  • Please help me:(

    - by Marin
    Hi! Can anyone please help me?:( I'm desperrate cause I have to finish this script as soon as possible! The problem is: Deprecated: Assigning the return value of new by reference is deprecated in C:\wamp\www\FlashChat_v607\chat\inc\common.php on line 155 Notice: Undefined variable: step in C:\wamp\www\FlashChat_v607\chat\inc\common.php on line 94 and this is the link where you can find the code: http://www5.zippyshare.com/v/3592861/file.html

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  • Webfaction apache + mod_wsgi + django configuration issue

    - by Dmitry Guyvoronsky
    A problem that I stumbled upon recently, and, even though I solved it, I would like to hear your opinion of what correct/simple/adopted solution would be. I'm developing website using Django + python. When I run it on local machine with "python manage.py runserver", local address is http://127.0.0.1:8000/ by default. However, on production server my app has other url, with path - like "http://server.name/myproj/" I need to generate and use permanent urls. If I'm using {% url view params %}, I'm getting paths that are relative to / , since my urls.py contains this urlpatterns = patterns('', (r'^(\d+)?$', 'myproj.myapp.views.index'), (r'^img/(.*)$', 'django.views.static.serve', {'document_root': settings.MEDIA_ROOT + '/img' }), (r'^css/(.*)$', 'django.views.static.serve', {'document_root': settings.MEDIA_ROOT + '/css' }), ) So far, I see 2 solutions: modify urls.py, include '/myproj/' in case of production run use request.build_absolute_uri() for creating link in views.py or pass some variable with 'hostname:port/path' in templates Are there prettier ways to deal with this problem? Thank you. Update: Well, the problem seems to be not in django, but in webfaction way to configure wsgi. Apache configuration for application with URL "hostname.com/myapp" contains the following line WSGIScriptAlias / /home/dreamiurg/webapps/pinfont/myproject.wsgi So, SCRIPT_NAME is empty, and the only solution I see is to get to mod_python or serve my application from root. Any ideas?

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  • Openlayers - LayerRedraw() / Feature rotation

    - by Ozaki
    TLDR: I have an Openlayers map with a layer called 'track' I want to remove track and add track back in. I have an image 'imageFeature' on a layer that rotates on load to the direction being set. I want it to update this rotation that is set in 'styleMap' on a layer called 'tracking'. I set the var 'stylemap' to apply the external image & rotation. The 'imageFeature' is added to the layer at the coords specified. 'imageFeature' is removed. 'imageFeature' is added again in its new location. Rotation is not applied.. As the 'styleMap' applies to the layer I think that I have to remove the layer and add it again rather than just the 'imageFeature' Layer: var tracking = new OpenLayers.Layer.GML("Tracking", "coordinates.json", { format: OpenLayers.Format.GeoJSON, styleMap: styleMap }); styleMap: var styleMap = new OpenLayers.StyleMap({ fillOpacity: 1, pointRadius: 10, rotation: heading, }); Now wrapped in a timed function the imageFeature: map.layers[3].addFeatures(new OpenLayers.Feature.Vector( new OpenLayers.Geometry.Point(longitude, latitude), {rotation: heading, type: parseInt(Math.random() * 3)} )); Type refers to a lookup of 1 of 3 images.: styleMap.addUniqueValueRules("default", "type", lookup); var lookup = { 0: {externalGraphic: "Image1.png", rotation: heading}, 1: {externalGraphic: "Image2.png", rotation: heading}, 2: {externalGraphic: "Image3.png", rotation: heading} } I have tried the 'redraw()' function: but it returns "tracking is undefined" or "map.layers[2]" is undefined. tracking.redraw(true); map.layers[2].redraw(true); Heading is a variable: from a JSON feed. var heading = 13.542; But so far can't get anything to work it will only rotate the image onload. The image will move in coordinates as it should though. So what am I doing wrong with the redraw function or how can I get this image to rotate live? Thanks in advance -Ozaki Add: I managed to get map.layers[2].redraw(true); to sucessfully redraw layer 2. But it still does not update the rotation. I am thinking because the stylemap is updating. But it runs through the style map every n sec, but no updates to rotation and the variable for heading is updating correctly if i put a watch on it in firebug.

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  • Access Filter VBA

    - by user569709
    Hi, I'm trying to use a filter in vba like this: Private Sub Form_Load() Me.Filter = "[Alvo] = " & AlvoAtual Me.FilterOn = True Me.Requery End Sub where AlvoAtual is global variable, but nothin happens. When I change the AlvoAtual for a specifc value nothin happens too. Like this: Private Sub Form_Load() Me.Filter = "[Alvo] = 'AAAA'" Me.FilterOn = True Me.Requery End Sub Someone knows the problem? Thank you.

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