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  • MATLAB interview questions?

    - by Shane
    I programmed in MATLAB for many years, but switched to using R exclusively in the past few years so I'm a little out of practice. I'm interviewing a candidate today who describes himself as a MATLAB expert. What MATLAB interview questions should I ask? Some other sites with resources for this: "Matlab interview questions" on Wilmott "MATLAB Questions and Answers" on GlobaleGuildLine "Matlab Interview Questions" on CoolInterview

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  • WPF RowDetailsTemplate width issue

    - by Ed Courtenay
    Apologies if this is a dupe, but I can't seem to find a rational solution for what must be a fairly simple issue. <Window x:Class="FeedTest.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525"> <Window.Resources> <XmlNamespaceMappingCollection x:Key="map"> <XmlNamespaceMapping Prefix="media" Uri="http://search.yahoo.com/mrss/" /> </XmlNamespaceMappingCollection> <XmlDataProvider x:Key="newsFeed" XPath="//item[string-length(title)>0]" Source="http://newsrss.bbc.co.uk/rss/newsonline_uk_edition/uk/rss.xml" /> <DataTemplate x:Key="rowDetailTemplate"> <Border BorderThickness="2"> <StackPanel Orientation="Horizontal"> <Image Source="{Binding XPath=media:thumbnail/@url}" Width="66" Height="49" /> <StackPanel Orientation="Vertical" Margin="5"> <TextBlock Text="{Binding XPath=description}" TextWrapping="Wrap" /> </StackPanel> </StackPanel> </Border> </DataTemplate> <Style TargetType="{x:Type DataGrid}"> <Setter Property="GridLinesVisibility" Value="None" /> </Style> </Window.Resources> <Grid Binding.XmlNamespaceManager="{StaticResource map}"> <DataGrid AutoGenerateColumns="False" ItemsSource="{Binding Source={StaticResource newsFeed}}" RowDetailsVisibilityMode="VisibleWhenSelected" RowDetailsTemplate="{StaticResource rowDetailTemplate}"> <DataGrid.Columns> <DataGridTextColumn Header="Title" Binding="{Binding XPath=title}" MinWidth="150" Width="*" /> </DataGrid.Columns> </DataGrid> </Grid> The attached XAML gets a news feed, and displays the title of each item in a DataGrid. Selecting an item shows the RowDetailsTemplate which is where my problem lies - why does the RowDetailsTemplate expand beyond the width of the containing DataGrid (thus forcing a horizontal scrollbar), and more importantly, how do I stop it doing this? Many thanks.

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  • Detecting 'stealth' web-crawlers

    - by Jacco
    What options are there to detect web-crawlers that do not want to be detected? (I know that listing detection techniques will allow the smart stealth-crawler programmer to make a better spider, but I do not think that we will ever be able to block smart stealth-crawlers anyway, only the ones that make mistakes.) I'm not talking about the nice crawlers such as googlebot and Yahoo! Slurp. I consider a bot nice if it: identifies itself as a bot in the user agent string reads robots.txt (and obeys it) I'm talking about the bad crawlers, hiding behind common user agents, using my bandwidth and never giving me anything in return. There are some trapdoors that can be constructed updated list (thanks Chris, gs): Adding a directory only listed (marked as disallow) in the robots.txt, Adding invisible links (possibly marked as rel="nofollow"?), style="display: none;" on link or parent container placed underneath another element with higher z-index detect who doesn't understand CaPiTaLiSaTioN, detect who tries to post replies but always fail the Captcha. detect GET requests to POST-only resources detect interval between requests detect order of pages requested detect who (consistently) requests https resources over http detect who does not request image file (this in combination with a list of user-agents of known image capable browsers works surprisingly nice) Some traps would be triggered by both 'good' and 'bad' bots. you could combine those with a whitelist: It trigger a trap It request robots.txt? It doest not trigger another trap because it obeyed robots.txt One other important thing here is: Please consider blind people using a screen readers: give people a way to contact you, or solve a (non-image) Captcha to continue browsing. What methods are there to automatically detect the web crawlers trying to mask themselves as normal human visitors. Update The question is not: How do I catch every crawler. The question is: How can I maximize the chance of detecting a crawler. Some spiders are really good, and actually parse and understand html, xhtml, css javascript, VB script etc... I have no illusions: I won't be able to beat them. You would however be surprised how stupid some crawlers are. With the best example of stupidity (in my opinion) being: cast all URLs to lower case before requesting them. And then there is a whole bunch of crawlers that are just 'not good enough' to avoid the various trapdoors.

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  • how to Use JAXWS/JAXB rename the parameter

    - by shrimpy
    I use CXF(2.2.3) to compile the Amazon Web Service WSDL (http://s3.amazonaws.com/ec2-downloads/2009-07-15.ec2.wsdl) But got error as below. Parameter: snapshotSet already exists for method describeSnapshots but of type com.amazonaws.ec2.doc._2009_07_15.DescribeSnapshotsSetType instead of com.amazonaws.ec2.doc._2009_07_15.DescribeSnapshotsSetResponseType. Use a JAXWS/JAXB binding customization to rename the parameter. The conflict was due to the data type show below: <xs:complexType name="DescribeSnapshotsType"> <xs:sequence> <xs:element name="snapshotSet" type="tns:DescribeSnapshotsSetType"/> </xs:sequence> </xs:complexType> <xs:complexType name="DescribeSnapshotsResponseType"> <xs:sequence> <xs:element name="requestId" type="xs:string"/> <xs:element name="snapshotSet" type="tns:DescribeSnapshotsSetResponseType"/> </xs:sequence> </xs:complexType> I create a binding file try to address the issue...but it didn`t do the job <jaxws:bindings xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" wsdlLocation="EC2_2009-07-15.wsdl" xmlns="http://java.sun.com/xml/ns/jaxws" xmlns:jxb="http://java.sun.com/xml/ns/jaxb" xmlns:jaxws="http://java.sun.com/xml/ns/jaxws"> <enableWrapperStyle>false</enableWrapperStyle> <jaxws:bindings node="wsdl:definitions/wsdl:types/xs:schema[@targetNamespace='http://ec2.amazonaws.com/doc/2009-07-15/']"> <jxb:bindings node="xs:complexType[@name='tns:DescribeSnapshotsType']//xs:element[@name='snapshotSet']"> <jxb:property name="snapshotRequestSet"/> </jxb:bindings> <jxb:bindings node="xs:complexType[@name='DescribeSnapshotsResponseType']//xs:element[@name='snapshotSet']"> <jxb:property name="snapshotResponseSet"/> </jxb:bindings> </jaxws:bindings> </jaxws:bindings> And the command i used, was like below <wsdlOptions> <wsdlOption> <wsdl>${basedir}/src/main/resources/wsdl/EC2_2009-07-15.wsdl</wsdl> <extraargs> <extraarg>-b</extraarg> <extraarg>${basedir}/src/main/resources/wsdl/Bindings_EC2_2009-07-15.xml</extraarg> </extraargs> </wsdlOption> </wsdlOptions> What is wrong with my code???? And you can check out my project by using svn.... svn co http://shrimpysprojects.googlecode.com/svn/trunk/smartcrc/AWSAgent/

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  • WCF Named Pipe IPC

    - by Peter M
    I have been trying to get up to speed on Named Pipes this week. The task I am trying to solve with them is that I have an existing windows service that is acting as a device driver that funnels data from an external device into a database. Now I have to modify this service and add an optional user front end (on the same machine, using a form of IPC) that can monitor the data as it passes between the device and the DB as well as send some commands back to the service. My initial ideas for the IPC were either named pipes or memory mapped files. So far I have been working through the named pipe idea using WCF Tutorial Basic Interprocess Communication . My idea is to set the Windows service up with an additional thread that implements the WCF NamedPipe Service and use that as a conduit to the internals of my driver. I have the sample code working, however I can not get my head around 2 issues that I am hoping that someone here can help me with: In the tutorial the ServiceHost is instantiated with a typeof(StringReverser) rather than by referencing a concrete class. Thus there seems to be no mechanism for the Server to interact with the service itself (between the host.Open() and host.Close() lines). Is it possible to create a link between and pass information between the server and the class that actually implements the service? If so, how? If I run a single instance of the server and then run multiple instance of the clients, it seems that each client gets a separate instance of the service class. I tried adding some state information to the class implementing the service and it was only retained within the instance of the named pipe. This is possibly related to the first question, but is there anyway to force the named pipes to use the same instance of the class that is implementing the service? Finally, any thoughts on MMF vs Named Pipes? Thanks for you help

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  • Custom DataAnnotation attribute with datastore access in ASP.NET MVC 2

    - by mare
    I have my application designed with Repository pattern implemented and my code prepared for optional dependency injection in future, if we need to support another datastore. I want to create a custom validation attribute for my content objects. This attribute should perform some kind of datastore lookup. For instance, I need my content to have unique slugs. To check if a Slug already exist, I want to use custom DataAnnotation attribute in my Base content object (instead of manually checking if a slug exists each time in my controller's Insert actions). Attribute logic would do the validation. So far I have come up with this: public class UniqueSlugAttribute : ValidationAttribute { private readonly IContentRepository _repository; public UniqueSlugAttribute(ContentType contentType) { _repository = new XmlContentRepository(contentType); } public override bool IsValid(object value) { if (string.IsNullOrWhiteSpace(value.ToString())) { return false; } string slug = value.ToString(); if(_repository.IsUniqueSlug(slug)) return true; return false; } } part of my Base content class: ... [DataMember] public ContentType ContentType1 { get; set; } [DataMember] [Required(ErrorMessageResourceType = typeof (Localize), ErrorMessageResourceName = "Validation_SlugIsBlank")] [UniqueSlug(ContentType1)] public string Slug { get { return _slug; } set { if (!string.IsNullOrEmpty(value)) _slug = Utility.RemoveIllegalCharacters(value); } } ... There's an error in line [UniqueSlug(ContentType1)] saying: "An attribute argument must be a constant expression, typeof expression or array creation expression of an attribute parameter type." Let me explain that I need to provide the ContentType1 parameter to the Constructor of UniqueSlug class because I use it in my data provider. It is actually the same error that appears if you try do to this on the built-in Required attribute: [Required(ErrorMessageResourceType = typeof (Localize), ErrorMessageResourceName = Resources.Localize.SlugRequired] It does not allow us to set it to dynamic content. In the first case ContentType1 gets known at runtime, in the second case the Resources.Localize.SlugRequired also gets known at runtime (because the Culture settings are assigned at runtime). This is really annoying and makes so many things and implementation scenarios impossible. So, my first question is, how to get rid of this error? The second question I have, is whether you think that I should redesign my validation code in any way?

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  • Becoming a better Android programmer

    - by Drew Dara-Abrams
    Any suggestions on how to become a better Android programmer? I'm past intro tutorials, which mainly focus on how to use pieces of the SDK, but I still struggle to structure big Android apps. Obviously the best use of my time is continuing with my coding projects, but I'm wondering if I should be learning more about Android particulars, solidifying my somewhat shaky Java knowledge, going back to object-oriented fundamentals or patterns...? Pointers to resources (books, example apps, sites) you've found helpful would be great.

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  • cuda program on VMware

    - by scatman
    i wrote a cuda program and i am testing it on ubuntu as a virtual machine. the reason for this is i have windows 7, i don't want to install ubuntu as a secondary operating system, and i need to use a linux operating system for testing. my question is: will the virtual machine limit the gpu resources? So will my cuda code be faster if i run it under my primary operating system than running it on a virtual machine?

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  • PLSQL: How to go about it

    - by Rachel
    I searched for this topic on SO but I did not found any recommendations and so am asking it as I am new to PLSQL and want to understand it: What is best way to get started with PLSQL ? What are best online resources or books available out there for understand PLSQL which you would recommend ? Do we have any comprehensive online video tutorial for PLSQL ? More Importantly: What Concepts should I be clear with to say myself as an PLSQL Developer?

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  • WCF push to client through firewall?

    - by Sire
    See also How does a WCF server inform a WCF client about changes? (Better solution then simple polling, e.g. Coment or long polling) I need to use push-technology with WCF through client firewalls. This must be a common problem, and I know for a fact it works in theory (see links below), but I have failed to get it working, and I haven't been able to find a code sample that demonstrates it. Requirements: WCF Clients connects to server through tcp port 80 (netTcpBinding). Server pushes back information at irregular intervals (1 min to several hours). Users should not have to configure their firewalls, server pushes must pass through firewalls that have all inbound ports closed. TCP duplex on the same connection is needed for this, a dual binding does not work since a port has to be opened on the client firewall. Clients sends heartbeats to server at regular intervals (perhaps every 15 mins) so server knows client is still alive. Server is IIS7 with WAS. The solution seems to be duplex netTcpBinding. Based on this information: WCF through firewalls and NATs Keeping connections open in IIS But I have yet to find a code sample that works.. I've tried combining the "Duplex" and "TcpActivation" samples from Microsoft's WCF Samples without any luck. Please can someone point me to example code that works, or build a small sample app. Thanks a lot!

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  • WPF Converter and NotifyOnTargetUpdated exclusive in a binding ?

    - by Mathieu Garstecki
    Hi, I have a problem with a databinding in WPF. When I try to use a value converter and set the NotifyOnTargetUpdated=True property to True, I get an XamlParseException with the following message: 'System.Windows.Data.BindingExpression' value cannot be assigned to property 'Contenu' of object 'View.UserControls.ShadowedText'. Value cannot be null. Parameter name: textToFormat Error at object 'System.Windows.Data.Binding' in markup file 'View.UserControls;component/saletotal.xaml' Line 363 Position 95. The binding is pretty standard: <my:ShadowedText Contenu="{Binding Path=Total, Converter={StaticResource CurrencyToStringConverter}, NotifyOnTargetUpdated=True}" TargetUpdated="MontantTotal_TargetUpdated"> </my:ShadowedText> (Styling properties removed for conciseness) The converter exists in the resources and works correctly when NotifyOnTargetUpdated=True is removed. Similarly, the TargetUpdated event is called and implemented correctly, and works when the converter is removed. Note: This binding is defined in a ControlTemplate, though I don't think that is relevant to the problem. Can anybody explain me what is happening ? Am I defining the binding wrong ? Are those features mutually exclusive (and in this case, can you explain why it is so) ? Thanks in advance. More info: Here is the content of the TargetUpdated handler: private void MontantTotal_TargetUpdated(object sender, DataTransferEventArgs e) { ShadowedText textBlock = (ShadowedText)e.TargetObject; double textSize = textBlock.Taille; double delta = 5; double defaultTaille = 56; double maxWidth = textBlock.MaxWidth; while (true) { FormattedText newFormat = new FormattedText(textBlock.Contenu, CultureInfo.CurrentCulture, FlowDirection.LeftToRight, new Typeface("Calibri"), textSize, (SolidColorBrush) Resources["RougeVif"]); if (newFormat.Width < textBlock.MaxWidth && textSize <= defaultTaille) { if ((Math.Round(newFormat.Width) + delta) >= maxWidth || textSize == defaultTaille) { break; } textSize++; } else { if ((Math.Round(newFormat.Width) - delta) <= maxWidth && textSize <= defaultTaille) { break; } textSize--; } } textBlock.Taille = textSize; } The role of the handler is to resize the control based on the length of the content. It is quite ugly but I want to have the functional part working before refactoring.

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  • F# and OCaml

    - by Erik Forbes
    I hear that F# is derived from OCaml. How true is this statement? That is to say, are the resources available for learning OCaml useful to someone who wants to learn F#? What are the major differences between the two languages (aside from the fact that F# is .NET)?

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  • EJB3 - using 2 persistence units within a transaction (Exception: Local transaction already has 1 no

    - by Sorcha
    I am trying to use 2 persistence units within the same transaction in a JEE application deployed on Glassfish. The 2 persistence units are defined in persistence.xml, as follows: <persistence-unit name="BeachWater"> <jta-data-source>jdbc/BeachWater</jta-data-source> ... <persistence-unit name="LIMS"> <jta-data-source>jdbc/BeachWaterLIMS</jta-data-source> ... These persistence units correspond to JDBC resources and connection pools which I had defined in Glassfish as follows (include one here as both are identical apart from names & database connection info): JDBC Resource: JNDI Name: jdbc/BeachWaterLIMS Pool Name: BEACHWATER_LIMS Connection Pool: Name: BEACHWATER_LIMS Datasource Classname: com.microsoft.sqlserver.jdbc.SQLServerConnectionPoolDataSource Resource Type: javax.sql.ConnectionPoolDataSource There are 3 stateless session beans, LimsServiceBean, AnalysisServiceBean and AnalysisDataTransformationServiceBean. Here are the relevant snippets from LimsServiceBean: @PersistenceContext(unitName = "LIMS") EntityManager em; ... public ArrayList<Sample> getLatestLIMSData() { Query q = em.createNamedQuery("Sample.findBySubTypeStatus"); return new ArrayList<Sample>(q.getResultList()); } From AnalysisServiceBean: @PersistenceContext(unitName = "BeachWater") EntityManager em; ... public ArrayList<AnalysisType> getAllAnalysisTypes() { Query q = em.createNamedQuery("AnalysisType.findAll"); return new ArrayList<AnalysisType>(q.getResultList()); } And from AnalysisDataTransformationServiceBean: @EJB private AnalysisService analysisService; @EJB private LimsService limsService; public void transformData() { List<AnalysisType> analysisTypes = analysisService.getAllAnalysisTypes(); ArrayList<Sample> samples = limsService.getLatestLIMSData(); This call to limsService.getLatestLIMSData() caused the following exception: [exec] Caused by: javax.ejb.TransactionRolledbackLocalException: Exception thrown from bean; nested exception is: Exception [TOPLINK-4002] (Oracle TopLink Essentials - 2.1 (Build b60e-fcs (12/23/2008))): oracle.toplink.essentials.exceptions.DatabaseException [exec] Internal Exception: java.sql.SQLException: Error in allocating a connection. Cause: java.lang.IllegalStateException: Local transaction already has 1 non-XA Resource: cannot add more resources. Having consulted this page, http://msdn.microsoft.com/en-us/library/ms378484.aspx (among many others), I tried changing the definition of the connection pools to: Connection Pool: Name: BEACHWATER_LIMS Datasource Classname: com.microsoft.sqlserver.jdbc.SQLServerXADataSource Resource Type: javax.sql.XADataSource Ping via the Glassfish admin console succeeds, but call to analysisService.getAllAnalysisTypes() now throws an exception: Caused by: javax.ejb.TransactionRolledbackLocalException: Exception thrown from bean; nested exception is: Exception [TOPLINK-4002] (Oracle TopLink Essentials - 2.1 (Build b60e-fcs (12/23/2008))): oracle.toplink.essentials.exceptions.DatabaseException Internal Exception: java.sql.SQLException: Error in allocating a connection. Cause: javax.transaction.SystemException Any ideas?

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  • SSIS IsNumeric expression Error

    - by rmdussa
    Hi am using following exression in ssis package !ISNULL((DT_I4)Route) ? (DT_WSTR,50)("SB" + SUBSTRING(RIGHT(Route,2),1,1)) : (DT_WSTR,50)Route when the Route value is Numeric it is sucess, when it is Non-numeric failing with following description. Any help,how to resolve this issue [Derived Column [111]] Error: SSIS Error Code DTS_E_INDUCEDTRANSFORMFAILUREONERROR. The "component "Derived Column" (111)" failed because error code 0xC0049067 occurred, and the error row disposition on "output column "column_New" (679)" 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. [SSIS.Pipeline] Error: SSIS Error Code DTS_E_PROCESSINPUTFAILED. The ProcessInput method on component "Derived Column" (111) failed with error code 0xC0209029 while processing input "Derived Column Input" (112). The identified component returned an error from the ProcessInput method. The error is specific to the component, but the error is fatal and will cause the Data Flow task to stop running. There may be error messages posted before this with more information about the failure.

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  • Using Fancybox with Google Static Maps

    - by Levi Hackwith
    Setup I have multiple links on a page with the class location_link Each Links rel attribute is equal to a city state combo (i.e.,Omaha, NE) Once the page is loaded, a JavaScript function loops through all of the location_link items and binds a click event to them using jQuery. This click event fires a call to the Fancybox constructor that is supposed to show a Google Map of the location that link is associated with The Problem: Whenever I click on one of the "location links", I get the following error message: The requested content cannot be loaded. Please try again later. Code I've Already Written: function setUpLocationLinks() { locationLinks = $("a.location_link"); locationLinks.click( function() { var me = $(this); console.log(me.attr("href")); $.fancybox( { "showCloseButton" : true, "hideOnContentClick" : true, "titlePosition" : "inside", "title" : me.attr("rel"), "type" : "image" } ) return false; } ); } Research I've Already Done: The Google Static Map API no longer requires an API Key. The following is from the Google Static Maps API Page Note: The Google Static Maps API no longer requires a Maps API key! (Google Maps API Premier customers should instead sign their URLs using a new cryptographic key which will be sent to you. See the Premier documentation for more information.) The The Image URL I'm using does resolve and pulls back the data I need When I put the above mentioned URL into a standard <img> tag, the map shows up just fine. I'd like to pull this off without having to create some sort of dummy <img> tag that I'm constantly switching the src attribute out of. Hopefully, you'll find this information helpful. Please let me know if you have any other questions.

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  • MapItemsControls not updating Silverlight Bing Map

    - by Matt
    I'm using a MapItemsControl to control my Pushpin items within my Bing silverlight map. Right on the page load, I add a new pin programatically, and the pin shows up on the map. However I've now taken it further and I'm adding pins to my datasource via a click on the map. The new pins add to my datasource, but do not show up on the map. Do I need to rebind my datasource to my map control or somehow refresh the datasource? Here's some code <UserControl.Resources> <DataTemplate x:Key="PinData"> <m:Pushpin Location="{Binding Location}" PositionOrigin="BottomCenter" Width="Auto" Height="Auto" Cursor="Hand"> <m:Pushpin.Template> <ControlTemplate> <Grid> <myTestApp:MasterPin DataContext="{Binding}"/> </Grid> </ControlTemplate> </m:Pushpin.Template> </m:Pushpin> </DataTemplate> </UserControl.Resources> <Grid x:Name="LayoutRoot" Background="White"> <m:Map x:Name="myMap" CredentialsProvider="" Mode="Road" ScaleVisibility="Collapsed" > <m:MapItemsControl x:Name="mapItems" ItemTemplate="{StaticResource PinData}"/> </m:Map> </Grid> public partial class Map : UserControl { private List< BasePin > dataSource = new List< BasePin >(); public Map() { InitializeComponent(); _Initialize(); } private void _Initialize() { //this part works and adds a pin to the map dataSource.Add( new BaseSite( -33.881532, 18.440208 ) ); myMap.MouseClick += Map_MouseClick; mapItems.ItemsSource = dataSource; } public void Map_MouseClick(object sender, MapMouseEventArgs e)) { BasePin pin = new BasePin(); pin.Location = myMap.ViewportPointToLocation( e.ViewportPoint ); dataSource.Add( pin ); } }

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  • Quartz Composer in iPhone UIView

    - by Peter Hajas
    Hi everyone, I am trying to embed a Quartz Composer document in an iPhone app. I know Quartz Composer support was added in iPhone OS 3.1 (at least, that's what Wikipedia says) but I can't find any good resources on how to do this. Do I use CGContext? Or are there more friendly ways to add a Quartz Composer composition? Thanks!

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  • sudo apt-get install python.pip python-dev Gives Error

    - by user2539745
    I am learning Django from http://gettingstartedwithdjango.com/ and I have windows 7 32-bit. The tutorial asked to install virtualbox and vagrant(tutorial had precise64 and it had issues in my pc so I installed precise32) so I did it. Now the tutorial asked to do sudo apt-get install python-dev python.pip so I did it but it gave me this error > vagrant@precise32:~$ sudo apt-get install python.pip python-dev Reading package lists... Done Building dependency tree Reading state information... Done Note, selecting 'python-pip' for regex 'python.pip' Note, selecting 'python-pipeline' for regex 'python.pip' The following extra packages will be installed: libexpat1 libexpat1-dev libpython2.7 python-pkg-resources python-setuptools python-support python2.7 python2.7-dev python2.7-minimal Suggested packages: python-distribute python-distribute-doc python2.7-doc binfmt-support The following NEW packages will be installed: libexpat1-dev libpython2.7 python-dev python-pip python-pipeline python-pkg-resources python-setuptools python-support python2.7-dev The following packages will be upgraded: libexpat1 python2.7 python2.7-minimal 3 upgraded, 9 newly installed, 0 to remove and 63 not upgraded. Need to get 34.7 MB/35.7 MB of archives. After this operation, 42.0 MB of additional disk space will be used. Do you want to continue [Y/n]? y Err (http removed)us.archive.ubuntu.com/ubuntu/ precise-updates/main python2.7 i386 2.7 .3-0ubuntu3.1 404 Not Found [IP: 91.189.91.15 80] Err (http removed)us.archive.ubuntu.com/ubuntu/ precise-updates/main python2.7-minimal i386 2.7.3-0ubuntu3.1 404 Not Found [IP: 91.189.91.15 80] Err (http removed)us.archive.ubuntu.com/ubuntu/ precise-updates/main libpython2.7 i386 2.7.3-0ubuntu3.1 404 Not Found [IP: 91.189.91.15 80] Err (http removed)us.archive.ubuntu.com/ubuntu/ precise-updates/main python2.7-dev i386 2.7.3-0ubuntu3.1 404 Not Found [IP: 91.189.91.15 80] Failed to fetch (http removed)us.archive.ubuntu.com/ubuntu/pool/main/p/python2.7/python 2.7_2.7.3-0ubuntu3.1_i386.deb 404 Not Found [IP: 91.189.91.15 80] Failed to fetch (http removed)us.archive.ubuntu.com/ubuntu/pool/main/p/python2.7/python 2.7-minimal_2.7.3-0ubuntu3.1_i386.deb 404 Not Found [IP: 91.189.91.15 80] Failed to fetch (http removed)us.archive.ubuntu.com/ubuntu/pool/main/p/python2.7/libpyt hon2.7_2.7.3-0ubuntu3.1_i386.deb 404 Not Found [IP: 91.189.91.15 80] Failed to fetch (http removed)us.archive.ubuntu.com/ubuntu/pool/main/p/python2.7/python 2.7-dev_2.7.3-0ubuntu3.1_i386.deb 404 Not Found [IP: 91.189.91.15 80] E: Unable to fetch some archives, maybe run apt-get update or try with --fix-mis sing? Please help what should I do ??

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  • Injecting jms resource in servlet & best practice for MDB

    - by kislo_metal
    using ejb 3.1, servlet 3.0 (glassfish server v3) Scenario: I have MDB that listen to jms messages and give processing to some other session bean (Stateless). Servelet injecting jms resource. Question 1: Why servlet can`t inject jms resources when they use static declaration ? @Resource(mappedName = "jms/Tarturus") private static ConnectionFactory connectionFactory; @Resource(mappedName = "jms/StyxMDB") private static Queue queue; private Connection connection; and @PostConstruct public void postConstruct() { try { connection = connectionFactory.createConnection(); } catch (JMSException e) { e.printStackTrace(); } } @PreDestroy public void preDestroy() { try { connection.close(); } catch (JMSException e) { e.printStackTrace(); } } The error that I get is : [#|2010-05-03T15:18:17.118+0300|WARNING|glassfish3.0|javax.enterprise.system.container.web.com.sun.enterprise.web|_ThreadID=35;_ThreadName=Thread-1;|StandardWrapperValve[WorkerServlet]: PWC1382: Allocate exception for servlet WorkerServlet com.sun.enterprise.container.common.spi.util.InjectionException: Error creating managed object for class ua.co.rufous.server.services.WorkerServiceImpl at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl.createManagedObject(InjectionManagerImpl.java:312) at com.sun.enterprise.web.WebContainer.createServletInstance(WebContainer.java:709) at com.sun.enterprise.web.WebModule.createServletInstance(WebModule.java:1937) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1252) Caused by: com.sun.enterprise.container.common.spi.util.InjectionException: Exception attempting to inject Unresolved Message-Destination-Ref ua.co.rufous.server.services.WorkerServiceImpl/[email protected]@null into class ua.co.rufous.server.services.WorkerServiceImpl at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl._inject(InjectionManagerImpl.java:614) at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl.inject(InjectionManagerImpl.java:384) at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl.injectInstance(InjectionManagerImpl.java:141) at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl.injectInstance(InjectionManagerImpl.java:127) at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl.createManagedObject(InjectionManagerImpl.java:306) ... 27 more Caused by: com.sun.enterprise.container.common.spi.util.InjectionException: Illegal use of static field private static javax.jms.Queue ua.co.rufous.server.services.WorkerServiceImpl.queue on class that only supports instance-based injection at com.sun.enterprise.container.common.impl.util.InjectionManagerImpl._inject(InjectionManagerImpl.java:532) ... 31 more |#] my MDB : /** * asadmin commands * asadmin create-jms-resource --restype javax.jms.ConnectionFactory jms/Tarturus * asadmin create-jms-resource --restype javax.jms.Queue jms/StyxMDB * asadmin list-jms-resources */ @MessageDriven(mappedName = "jms/StyxMDB", activationConfig = { @ActivationConfigProperty(propertyName = "connectionFactoryJndiName", propertyValue = "jms/Tarturus"), @ActivationConfigProperty(propertyName = "acknowledgeMode", propertyValue = "Auto-acknowledge"), @ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Queue") }) public class StyxMDB implements MessageListener { @EJB private ActivationProcessingLocal aProcessing; public StyxMDB() { } public void onMessage(Message message) { try { TextMessage msg = (TextMessage) message; String hash = msg.getText(); GluttonyLogger.getInstance().writeInfoLog("geted jms message hash = " + hash); } catch (JMSException e) { } } } everything work good without static declaration: @Resource(mappedName = "jms/Tarturus") private ConnectionFactory connectionFactory; @Resource(mappedName = "jms/StyxMDB") private Queue queue; private Connection connection; Question 2: what is the best practice for working with MDB : processing full request in onMessage() or calling another bean(Stateless bean in my case) in onMessage() method that would process it. Processing including few calls to soap services, so the full processing time could be for a 3 seconds. Thank you.

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  • Webservice Connection Refused

    - by sidcom
    I have developed a web app using a webservice. Everything works fine in the development environment. I have moved the webservice to the production server in a test folder behind my main website. I can browse to the published service localy on the production server and i can access the remote service from my development machine. If I run my web app in my development environment I can use the remote webservice no problem. If I move the web application to the production environment the browser outputs this error when the application performs the ajax login method. The following javascript error is output to the browser Error: Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server. The status code returned from the server was: 500 Source File: www.grav80.com/clients/callswharf/Redshift/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=RadScriptManager1_HiddenField&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d3.5.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3a1247b7d8-6b6c-419f-a45f-8ff264c90734%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%2c+Version%3d2009.2.826.35%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen-US%3ad2d891f5-3533-469c-b9a2-ac7d16eb23ff%3a16e4e7cd%3a86526ba7%3aed16cbdc%3ab7778d6c Line: 15 The Following error appears in the event log Exception information: Exception type: WebException Exception message: Unable to connect to the remote server Request information: Request URL: www.grav80.com/clients/callswharf/redshift/login.aspx Request path: /clients/callswharf/redshift/login.aspx User host address: 77.68.58.231 User: Is authenticated: False Authentication Type: Thread account name: NT AUTHORITY\NETWORK SERVICE You can view the behaviour in the test environment here. http://www.grav80.com/clients/callswharf/redshift/ You can view the service here http://www.grav80.com/clients/callswharf/redshift/service/g80cms.asmx I hope some on can shine some light on this for me.

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  • Load image in device independent and screen independent fashion into a layout view using 1.6 SDK

    - by Mark Wigzell
    I'm having trouble getting an asset image to scale up when I load it. The new call to BitmapDrawable(Resources, BitmapDrawable) is not available on 1.6 SDK. Is there a workaround to load the BitmapDrawable the old way and then somehow manipulate it? I have tried calling setTargetDensity() to no avail. My code (which doesn't scale properly) is: ImageView iv = (ImageView)view.findViewById(R.id.image); iv.setImageDrawable(new BitmapDrawable(view.getContext().getAssets().open(path)));

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  • Another Security Exception on GoDaddy after Login attempt

    - by Brian Boatright
    Host: GoDaddy Shared Hosting Trust Level: Medium The following happens after I submit a valid user/pass. The database has read/write permissions and when I remove the login requirement on an admin page that updates the database work as expected. Has anyone else had this issue or know what the problem is? Anyone? Server Error in '/' Application. Security Exception Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file. Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [SecurityException: Request for the permission of type 'System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.] System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet) +0 System.Security.CodeAccessPermission.Demand() +59 System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy) +684 System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share) +114 System.Configuration.Internal.InternalConfigHost.StaticOpenStreamForRead(String streamName) +80 System.Configuration.Internal.InternalConfigHost.System.Configuration.Internal.IInternalConfigHost.OpenStreamForRead(String streamName, Boolean assertPermissions) +115 System.Configuration.Internal.InternalConfigHost.System.Configuration.Internal.IInternalConfigHost.OpenStreamForRead(String streamName) +7 System.Configuration.Internal.DelegatingConfigHost.OpenStreamForRead(String streamName) +10 System.Configuration.UpdateConfigHost.OpenStreamForRead(String streamName) +42 System.Configuration.BaseConfigurationRecord.InitConfigFromFile() +437 Version Information: Microsoft .NET Framework Version:2.0.50727.1433; ASP.NET Version:2.0.50727.1433

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  • PyQt4 Custom Widgets

    - by Frank E.
    Are there any good PyQt4 custom widgets like at Qt-Apps.org? I would like to start making PyQt custom widgets but online resources that I find don't seem to be clear For example, Trolltech's and Zetcode's don't seem to be related in any way at all. Thanks for any input :)

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