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  • Java FileInputStream ObjectInputStream reaches end of file EOF

    - by user69514
    I am trying to read the number of line in a binary file using readObject, but I get IOException EOF. Am I doing this the right way? FileInputStream istream = new FileInputStream(fileName); ObjectInputStream ois = new ObjectInputStream(istream); /** calculate number of items **/ int line_count = 0; while( (String)ois.readObject() != null){ line_count++; }

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  • Regex split into overlapping strings

    - by polygenelubricants
    I'm exploring the power of regular expressions, so I'm just wondering if something like this is possible: public class StringSplit { public static void main(String args[]) { System.out.println( java.util.Arrays.deepToString( "12345".split(INSERT_REGEX_HERE) ) ); // prints "[12, 23, 34, 45]" } } If possible, then simply provide the regex (and preemptively some explanation on how it works). If it's only possible in some regex flavors other than Java, then feel free to provide those as well. If it's not possible, then please explain why.

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  • YouTube API Security Error Flex

    - by 23tux
    Hi, I've tried to use the YoutTube API within a Flex project. But i got this error: *** Security Sandbox Violation *** SecurityDomain 'http://www.youtube.com/apiplayer?version=3' tried to access incompatible context 'file:///Users/YouTubePlayer/bin-debug/YouTubePlayer.html' Here are the two files: <?xml version="1.0" encoding="utf-8"?> <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/halo" minWidth="1024" minHeight="768" xmlns:youtube="youtube.*" creationComplete="init();"> <fx:Script> <![CDATA[ [Bindable] private var ready:Boolean = true; private function init():void { Security.allowInsecureDomain("*"); Security.allowDomain("*"); Security.allowDomain('www.youtube.com'); Security.allowDomain('youtube.com'); Security.allowDomain('s.ytimg.com'); Security.allowDomain('i.ytimg.com'); } private function changing():void { /* trace("currentTime: " + player.getCurrentTime()); trace("startTime: " + player.startTime); trace("stopTime: " + player.stopTime); timeSlider.value = player.getCurrentTime() */ } private function startPlaying():void { player.play(); } private function checkStartSlider():void { if(startSlider.value > stopSlider.value) stopSlider.value = startSlider.value + 1; } private function checkStopSlider():void { if(stopSlider.value < startSlider.value) startSlider.value = stopSlider.value - 1; } ]]> </fx:Script> <s:VGroup> <youtube:Player id="player" videoID="DVFvcVuWyfE" change="changing();" ready="ready=true"/> <s:HGroup> <s:Button label="play" click="startPlaying();" /> </s:HGroup> <s:HGroup> <s:HSlider id="timeSlider" width="250" minimum="0" maximum="{player.stopTime}" snapInterval=".01" enabled="{ready}"/> <s:Label id="currentTimeLbl" text="current time: 0" /> </s:HGroup> <s:HGroup> <s:HSlider id="startSlider" width="250" minimum="0" maximum="{player.stopTime}" snapInterval=".01" change="checkStartSlider();" enabled="{ready}" value="0"/> <s:Label id="startTimeLbl" text="start time: {player.startTime}" /> </s:HGroup> <s:HGroup> <s:HSlider id="stopSlider" width="250" minimum="0" maximum="{player.stopTime}" snapInterval=".01" change="checkStopSlider();" enabled="{ready}" value="{player.stopTime}"/> <s:Label id="stopTimeLbl" text="stop time: {player.stopTime}" /> </s:HGroup> </s:VGroup> </s:Application> Here is the player package youtube { import flash.display.Loader; import flash.events.Event; import flash.events.TimerEvent; import flash.net.URLRequest; import flash.system.Security; import flash.utils.Timer; import mx.core.UIComponent; [Event(name="change", type="flash.events.Event")] [Event(name="ready", type="flash.events.Event")] public class Player extends UIComponent { private var player:Object; private var loader:Loader; private var _startTime:Number = 0; private var _stopTime:Number = 0; private var _videoID:String; private var metadataTimer:Timer = new Timer(200); private var playTimer:Timer = new Timer(200); public function Player() { // The player SWF file on www.youtube.com needs to communicate with your host // SWF file. Your code must call Security.allowDomain() to allow this // communication. Security.allowInsecureDomain("*"); Security.allowDomain("*"); // This will hold the API player instance once it is initialized. loader = new Loader(); loader.contentLoaderInfo.addEventListener(Event.INIT, onLoaderInit); loader.load(new URLRequest("http://www.youtube.com/apiplayer?version=3")); } private function onLoaderInit(event:Event):void { addChild(loader); loader.content.addEventListener("onReady", onPlayerReady); loader.content.addEventListener("onError", onPlayerError); loader.content.addEventListener("onStateChange", onPlayerStateChange); loader.content.addEventListener("onPlaybackQualityChange", onVideoPlaybackQualityChange); } private function onPlayerReady(event:Event):void { // Event.data contains the event parameter, which is the Player API ID trace("player ready:", Object(event).data); // Once this event has been dispatched by the player, we can use // cueVideoById, loadVideoById, cueVideoByUrl and loadVideoByUrl // to load a particular YouTube video. player = loader.content; // Set appropriate player dimensions for your application player.setSize(0, 0); } private function onPlayerError(event:Event):void { // Event.data contains the event parameter, which is the error code trace("player error:", Object(event).data); } private function onPlayerStateChange(event:Event):void { // Event.data contains the event parameter, which is the new player state trace("player state:", Object(event).data); } private function onVideoPlaybackQualityChange(event:Event):void { // Event.data contains the event parameter, which is the new video quality trace("video quality:", Object(event).data); } [Bindable] public function get videoID():String { return _videoID; } public function set videoID(value:String):void { _videoID = value; } [Bindable] public function get stopTime():Number { return _stopTime; } public function set stopTime(value:Number):void { _stopTime = value; } [Bindable] public function get startTime():Number { return _startTime; } public function set startTime(value:Number):void { _startTime = value; } public function play():void { if(_videoID!="") { player.loadVideoById(_videoID, 0); // add the event listener, so that all 200 milliseconds is an event dispatched metadataTimer.addEventListener(TimerEvent.TIMER, metadataTimeHandler); // if the timer is running, stop and reset it if(metadataTimer.running) metadataTimer.reset(); else metadataTimer.start(); } } private function metadataTimeHandler(e:TimerEvent):void { if(player.getDuration() > 0) { startTime = 0; stopTime = player.getDuration(); metadataTimer.reset(); metadataTimer.stop(); metadataTimer.removeEventListener(TimerEvent.TIMER, metadataTimeHandler); player.playVideo(); playTimer.addEventListener(TimerEvent.TIMER, playTimerHandler); dispatchEvent(new Event("ready")); } } private function playTimerHandler(e:TimerEvent):void { if(getCurrentTime() > _stopTime) { seekTo(startTime); } dispatchEvent(new Event(Event.CHANGE)); } public function getCurrentTime():Number { if(!player.getCurrentTime()) return 0; else return player.getCurrentTime(); } public function seekTo(time:uint):void { player.seekTo(time); } } } Hope someone can help. thx, tux

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  • MediaElement fails after several plays.

    - by basilkot
    Hi! I have a problem with MediaElement control. I've put six MediaElements on my form, then I start them and change played files by timer. After several times, these elements stop playing. Here is the sample XAML: <Grid> <Grid.RowDefinitions> <RowDefinition Height="*" /> <RowDefinition Height="*" /> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition Width="*" /> <ColumnDefinition Width="*" /> <ColumnDefinition Width="*" /> </Grid.ColumnDefinitions> <MediaElement x:Name="element1" UnloadedBehavior="Close" LoadedBehavior="Manual" Grid.Column="0" Grid.Row="0" /> <MediaElement x:Name="element2" UnloadedBehavior="Close" LoadedBehavior="Manual" Grid.Column="1" Grid.Row="0" /> <MediaElement x:Name="element3" UnloadedBehavior="Close" LoadedBehavior="Manual" Grid.Column="2" Grid.Row="0" /> <MediaElement x:Name="element4" UnloadedBehavior="Close" LoadedBehavior="Manual" Grid.Column="0" Grid.Row="1" /> <MediaElement x:Name="element5" UnloadedBehavior="Close" LoadedBehavior="Manual" Grid.Column="1" Grid.Row="1" /> <MediaElement x:Name="element6" UnloadedBehavior="Close" LoadedBehavior="Manual" Grid.Column="2" Grid.Row="1" /> Here is the sample code: // The code below repeats for each MediaElement List<string> playlist1 = new List<string>() { @"file1.wmv", @"file2.wmv", @"file3.wmv", @"file4.wmv" }; DispatcherTimer timer1 = null; int index1 = 0; ... void Window1_Loaded(object sender, RoutedEventArgs e) { timer1 = new DispatcherTimer(); timer1.Tick += new EventHandler(timer1_Elapsed); timer1.Interval = TimeSpan.FromSeconds(10); element1.Source = new Uri(playlist1[index1]); timer1.Start(); element1.Play(); ... } void timer1_Elapsed(object sender, EventArgs e) { Dispatcher.BeginInvoke(DispatcherPriority.Normal, (System.Threading.ThreadStart)delegate() { element1.Stop(); element1.Close(); timer1.Stop(); index1++; if (index1 >= playlist1.Count) { index1 = 0; } element1.Source = new Uri(playlist1[index1]); timer1.Start(); element1.Play(); }); } ... Does anybody have similar problems?

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  • Unit Testing UrlHelper Extension Methods

    - by fregas
    I'm trying to create unit tests to make sure my extension methods for UrlHelper work? Does anyone know how to do this? I'm using MVC 1.0 and MvcContrib. I can test the routes but can't test code like this: public static string MoreFloorplans(this UrlHelper urlHelper, long productID, int pageIndex) { return urlHelper.Action<CatalogController>(x => x.GetRelatedProducts(productID, pageIndex)); }

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  • How are hash functions like MD5 unique?

    - by Aly
    Im aware that MD5 has had some collisions but this is more of a high level question about hashing functions. If MD5 hashes any arbitrary string into a 32-digit hex value, then according to the Pigeonhole Principle surely this can not be unique as there are more unique arbitrary strings than there are unique 32-digit hex values

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  • WIX will not add HKLM registry setting during Windows 7 install

    - by Scott Boettger
    Good Morning, I have written a WiX installer that works perfectly with Windows XP but when installing to a Windows 7 box I am running into difficulty with Registry Entries. What I need to do is add a HKLM entry as well as the registry entry for the program to show in the start menu. Here is the code i am using for both types of entry: <!-- Create the registry entries for the program --> <DirectoryRef Id="TARGETDIR"> <Component Id="RegistryEntriesInst" Guid="..."> <RegistryKey Root="HKLM" Key="Software\$(var.Manufacturer)\$(var.ProductName)" Action="createAndRemoveOnUninstall"> <RegistryValue Type="string" Name="installed" Value="true" KeyPath="yes"/> </RegistryKey> </Component> <Component Id="RegistryEntriesVer" Guid="..."> <RegistryKey Root="HKLM" Key="Software\$(var.Manufacturer)\$(var.ProductName)" Action="createAndRemoveOnUninstall"> <RegistryValue Type="string" Name="version" Value="$(var.ProductVersion)" KeyPath="yes"/> </RegistryKey> </Component> </DirectoryRef> <!-- To add shortcuts to the start menu to run and uninstall the program--> <DirectoryRef Id="ApplicationProgramsFolder"> <Component Id="ApplicationShortcut" Guid="..."> <Shortcut Id="ApplicationStartMenuShortcut" Name="$(var.ProductName)" Description="..." Target="[SERVERLOCATION]$(var.Project.TargetFileName)" WorkingDirectory="SERVERLOCATION"/> <Shortcut Id="UninstallProduct" Name="Uninstall $(var.ProductName)" Description="..." Target="[System64Folder]msiexec.exe" Arguments="/x [ProductCode]"/> <RemoveFolder Id="SERVERLOCATION" On="uninstall"/> <RegistryValue Root="HKCU" Key="Software\$(var.Manufacturer)\$(var.ProductName)" Name="installed" Type="integer" Value="1" KeyPath="yes"/> </Component> </DirectoryRef> Any help/suggestions that can be given will be appreciated. On a side note the registry permissions are the same on the XP and 7 computers. Thanks

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  • Problem with delete operation in many to many relation

    - by Alexey Zakharov
    Hi, I've got to classes Product and Store which have many to many relation I want deleting of store not to cause deleting of related product And deleting of product not to cause deleting of related store. Currently deleting of entity cause exception due to Foreign Key constraint. Here is this classes and their mapping in fluent hibernate: public class Product { public Product() { this.StoresStockedIn = new List<Store>(); } public virtual string Name { get; set; } public virtual double Price { get; set; } public virtual long ProductID { get; set; } public virtual IList<Store> StoresStockedIn { get; set; } } public class Store { public Store() { this.Products = new List<Product>(); this.Staff = new List<Employee>(); } public virtual string Name { get; set; } public virtual IList<Product> Products { get; set; } public virtual IList<Employee> Staff { get; set; } public virtual long StoreID { get; set; } } public class ProductMap : ClassMap<Product> { public ProductMap() { this.Id(x => x.ProductID); this.Map(x => x.Name); this.Map(x => x.Price); this.HasManyToMany(x => x.StoresStockedIn) .Cascade.None() .Table("StoreProduct"); } public class StoreMap : ClassMap<Store> { public StoreMap() { this.Id(x => x.StoreID); this.Map(x => x.Name); this.HasManyToMany(x => x.Products) .Cascade.None() .Inverse() .Table("StoreProduct"); this.HasMany(x => x.Staff) .Cascade.All() .Inverse(); } } Thanks, Alexey Zakharov

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  • Null check error message as "is null" or "was null"

    - by Timo Westkämper
    When doing null checks in Java code, and you throw IllegalArgumentExceptions for null values, what kind of message template do you use? We tend to use something like this public User getUser(String username){ if (username == null){ throw new IllegalArgumentException("username is null"); } // ... } What is better : "is null" or "was null", and why? For me "is null" feels more natural.

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  • Using a Unicode format for Python's `time.strftime()`

    - by Hosam Aly
    I am trying to call Python's time.strftime() function using a Unicode format string: u'%d\u200f/%m\u200f/%Y %H:%M:%S' (\u200f is the "Right-To-Left Mark" (RLM).) However, I am getting an exception that the RLM character cannot be encoded into ascii: UnicodeEncodeError: 'ascii' codec can't encode character u'\u200f' in position 2: ordinal not in range(128) I have tried searching for an alternative but could not find a reasonable one. Is there an alternative to this function, or a way to make it work with Unicode characters?

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  • Strange Integer.parseInt exception

    - by Albinoswordfish
    Exception in thread "Thread-2" java.lang.NumberFormatException: For input string: "3" int test = Integer.parseInt(result[0]); This is the error I keep getting when I'm trying to convert "3" to an integer. Well I'm receiving this "3" through a RS-232 port, so maybe this is what is causing the error. If anybody has any idea what could be causing this it would be appreciated.

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  • How to obtain position in file (byte-position) from java scanner?

    - by september2010
    How to obtain a position in file (byte-position) from the java scanner? Scanner scanner = new Scanner(new File("file")); scanner.useDelimiter("abc"); scanner.hasNext(); String result = scanner.next(); and now: how to get the position of result in file (in bytes)? Using scanner.match().start() is not the answer, because it gives the position within internal buffer.

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  • Retrieve EF4 POCOs using WCF REST services starter kit

    - by muruge
    I am using WCF REST service (GET method) to retrieve my EF4 POCOs. The service seem to work just fine. When I query the uri in my browser I get the results as expected. In my client application I am trying to use WCF REST Starter Kit's HTTPExtension method - ReadAsDataContract() to convert the result back into my POCO. This works fine when the POCO's navigation property is a single object of related POCO. The problem is when the navigation property is a collection of related POCOs. The ReadAsDataContract() method throws an exception with message "Object reference not set to an instance of an object." Below are my POCOs. [DataContract(Namespace = "", Name = "Trip")] public class Trip { [DataMember(Order = 1)] public virtual int TripID { get; set; } [DataMember(Order = 2)] public virtual int RegionID { get; set; } [DataMember(Order = 3)] public virtual System.DateTime BookingDate { get; set; } [DataMember(Order = 4)] public virtual Region Region { // removed for brevity } } [DataContract(Namespace = "", Name = "Region")] public class Region { [DataMember(Order = 1)] public virtual int RegionID { get; set; } [DataMember(Order = 2)] public virtual string RegionCode { get; set; } [DataMember(Order = 3)] public virtual FixupCollection<Trip> Trips { // removed for brevity } } [CollectionDataContract(Namespace = "", Name = "{0}s", ItemName = "{0}")] [Serializable] public class FixupCollection<T> : ObservableCollection<T> { protected override void ClearItems() { new List<T>(this).ForEach(t => Remove(t)); } protected override void InsertItem(int index, T item) { if (!this.Contains(item)) { base.InsertItem(index, item); } } } And this is how I am trying retrieve a Region POCO. static void GetRegion() { string uri = "http://localhost:8080/TripService/Regions?id=1"; HttpClient client = new HttpClient(uri); using (HttpResponseMessage response = client.Get(uri)) { Region region; response.EnsureStatusIsSuccessful(); try { region = response.Content.ReadAsDataContract<Region>(); // this line throws exception because Region returns a collection of related trips Console.WriteLine(region.RegionName); } catch (Exception ex) { Console.WriteLine(ex.Message); } } } Would appreciate any pointers.

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  • Web Security: Worst-Case Situation

    - by Yongho
    I currently have built a system that checks user IP, browser, and a random-string cookie to determine if he is an admin. In the worst case, someone steals my cookie, uses the same browser I do, and masks his IP to appear as mine. Is there another layer of security I should add onto my script to make it more secure?

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  • In Objective C, what's the best way to extract multiple substrings of text around multiple patterns?

    - by Matt
    For one NSString, I have N pattern strings. I'd like to extract substrings "around" the pattern matches. So, if i have "the quick brown fox jumped over the lazy dog" and my patterns are "brown" and "lazy" i would like to get "quick brown fox" and "the lazy dog." However, the substrings don't necessarily need to be delimited by whitespace. I have a hunch that there's a very easy solution to this, but I admit a disturbing lack of knowledge of Objective C string functions.

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  • How do you model roles / relationships with Domain Driven Design in mind?

    - by kitsune
    If I have three entities, Project, ProjectRole and Person, where a Person can be a member of different Projects and be in different Project Roles (such as "Project Lead", or "Project Member") - how would you model such a relationship? In the database, I currently have the following tablers: Project, Person, ProjectRole Project_Person with PersonId & ProjectId as PK and a ProjectRoleId as a FK Relationship. I'm really at a loss here since all domain models I come up with seem to break some "DDD" rule. Are there any 'standards' for this problem? I had a look at a Streamlined Object Modeling and there is an example what a Project and ProjectMember would look like, but AddProjectMember() in Project would call ProjectMember.AddProject(). So Project has a List of ProjectMembers, and each ProjectMember in return has a reference to the Project. Looks a bit convoluted to me. update After reading more about this subject, I will try the following: There are distinct roles, or better, model relationships, that are of a certain role type within my domain. For instance, ProjectMember is a distinct role that tells us something about the relationship a Person plays within a Project. It contains a ProjectMembershipType that tells us more about the Role it will play. I do know for certain that persons will have to play roles inside a project, so I will model that relationship. ProjectMembershipTypes can be created and modified. These can be "Project Leader", "Developer", "External Adviser", or something different. A person can have many roles inside a project, and these roles can start and end at a certain date. Such relationships are modeled by the class ProjectMember. public class ProjectMember : IRole { public virtual int ProjectMemberId { get; set; } public virtual ProjectMembershipType ProjectMembershipType { get; set; } public virtual Person Person { get; set; } public virtual Project Project { get; set; } public virtual DateTime From { get; set; } public virtual DateTime Thru { get; set; } // etc... } ProjectMembershipType: ie. "Project Manager", "Developer", "Adviser" public class ProjectMembershipType : IRoleType { public virtual int ProjectMembershipTypeId { get; set; } public virtual string Name { get; set; } public virtual string Description { get; set; } // etc... }

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  • add data to column series in wpf C#

    - by Archana R
    Hello, I want to create a ColumnSeries Bar Chart in WPF using C#. I shall extract the data from the database and want to bind it to the bar chart. The data extracted will contain two values. First is parameter name(string) and the other is its value(double). Which type of collection shall i use? and how to do the binding? Thanks in advance.

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  • PlayFramework with Scala and Morphia

    - by AKRamkumar
    I keep getting this exception: Oops: CannotCompileException An unexpected error occured caused by exception CannotCompileException: [source error] ds() not found in models.dc What is wrong with my code? Here is models.ds package models import com.google.code.morphia.annotations._ @Embedded class ds{ @Indexed var xs : Double=0 @Indexed var xc : Double=0 @Indexed var ys : Double=0 @Indexed var yc : Double=0 @Indexed var zs : Double=0 @Indexed var zc : Double=0 } Here is models.dc package models import com.google.code.morphia.annotations.{Embedded, Entity, Indexed} @Entity class dc{ @Indexed var name : String = null @Embedded var summary : ds = new ds() }

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  • Detecting .com / .co.uk etc etc

    - by Stefan
    Hey all! I currently have a preg_match to detect http:// and www. etc..... but I want to detect domain.com or domain.co.uk etc etc... Sorry... to clarify: i'm detecting in a string. Any ideas i need to scratch up on my regex! Thanks, Stefan

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  • Extending WPF Button to store data in a new property

    - by Jay
    I want to extend a WPF button to store some extra data, in a similar way to the current "Tag" property. Are attached properties the way forward? The data I want to store will be a URL Link string, for example I would like to be able to do something like: <Button Tag="BBC World News" URLLink="http://www.bbc.co.uk"/> Can anyone help me to understand how to extend the Button? Many thanks Jay

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  • Using base64 encoding as a mechanism to detect changes

    - by Mikos
    Is it possible to detect changes in the base64 encoding of an object to detect the degree of changes in the object. Suppose I send a document attachment to several users and each makes changes to it and emails back to me, can I use the string distance between original base64 and the received base64s to detect which version has the most changes. Would that be a valid metric? If not, would there be any other metrics to quantify the deltas?

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  • ASP .NET - How to Iterate through a repeater ?

    - by Amokrane
    Hi, What I'm trying to do is iterate through a repeater and read some controls values: foreach (RepeaterItem iter in TablePanier.Items) { string guid = ((HiddenField)iter.FindControl("guid")).Value.ToString(); // nombre exemplaires du livre int nbExemplaires = int.Parse(((System.Web.UI.WebControls.TextBox)iter.FindControl("txtNbExemplaires")).Text.ToString()); } As you can see, I have a HiddenValue and a TextBox. Unfortunately this isn't working, the values are not read correctly. What's wrong? Thank you!

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