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• Updating CoreData xcdatamodel file troubles - attribute type change

  - by San

  I noticed several questions related to this topic go unanswered. Is this such a gray area that nobody really understands it? Here is my problem: I am a midway in the development of my app and the app has never been used ouside of my iphone simulator.One of the attributes in my core data structure requires a type change.Since my app has never been used outside of my iPhone Simulator, I first deleted the sqlite file. Doubling the effort of this step, I also went into iPhone Simulator menu and selected "Reset Content and Settings...". Than, I edited the xcdatamodel file and changed the type of my attribute. I saved the file and exited. Without any other changes, I compiled. I expected it to fail because of my type change. It did not! After this, I assigned a value with new type to my attribute and it fails to compile?! Is there something else that I need to do for the change to take an effect? I would really, really appreciate an answer to my question. Thank you!

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• Validating DataAnnotations with Validator class

  - by Pablote

  I'm trying to validate a class decorated with dataannotation with the Validator class. It works fine when the attributes are applied to the same class. But when I try to use a metadata class it doesn't work. Is there anything I should do with the Validator so it uses the metadata class? Here's some code.. this works: public class Persona { [Required(AllowEmptyStrings = false, ErrorMessage = "El nombre es obligatorio")] public string Nombre { get; set; } [Range(0, int.MaxValue, ErrorMessage="La edad no puede ser negativa")] public int Edad { get; set; } } this doesnt work: [MetadataType(typeof(Persona_Validation))] public class Persona { public string Nombre { get; set; } public int Edad { get; set; } } public class Persona_Validation { [Required(AllowEmptyStrings = false, ErrorMessage = "El nombre es obligatorio")] public string Nombre { get; set; } [Range(0, int.MaxValue, ErrorMessage = "La edad no puede ser negativa")] public int Edad { get; set; } } this is how I validate the instances: ValidationContext context = new ValidationContext(p, null, null); List<ValidationResult> results = new List<ValidationResult>(); bool valid = Validator.TryValidateObject(p, context, results, true); thanks.

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• Log in using Java where server's authentication could be sso or web applcation container's basic

  - by Ed

  Hi, I have a situation where ideally I want to be able to log-in to a secure area using a Java application. I would like to make an HTTP request and check the response to see if I need to do some kind of authenication before I can actually get the response expected, instead of effectively some login page. The complication is that the server that responds will not always be the same - the user of the Java app specifies the URL - and the server may be using some kind of single sign on authentication or the web container's. I don't know the field names for the username and password fields or the action of the form, is there a simple way to obtain this kind of information from the URL? I see the URLConnection object has methods getPermission() which has a method getActions() but are not suitable, anything that might be? I guess example things I am looking to determine: Does the response require authentication? If so; what type / which servlet? e.g. j_security_check, josso single sign on, ... And then some way of authenticating the client And finally managing the state of the authenticated user for other requests Do I need to know the attributes of the login form before attemping to login? And then, is the onoly way of verifying permission to the requested resource to manually manage the cookies? Thanks in advance.

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• josso newbie setup problems - can't use tomcat's manager page

  - by opensas

  I'm trying to setup josso on an apache tomcat server running on windows. I've installed Apache Tomcat/6.0.26 fro zip file to c:\tomcat then installed josso following the documentation at http://www.josso.org/confluence/display/JOSSO1/Quick+Start started tomcat with c:\tomcat\bin\startup.bat, and noticed the following warnings ADVERTENCIA: [SetPropertiesRule]{Server/Service/Engine/Realm} Setting property ' debug' to '1' did not find a matching property. 21/03/2010 15:55:03 org.apache.tomcat.util.digester.SetPropertiesRule begin ADVERTENCIA: [SetPropertiesRule]{Server/Service/Engine/Host/Valve} Setting prope rty 'appName' to 'josso' did not find a matching property. ... ADVERTENCIA: Unable to find required classes (javax.activation.DataHandler and j avax.mail.internet.MimeMultipart). Attachment support is disabled. ... ADVERTENCIA: Bean with key 'josso:type=SSOAuditManager' has been registered as a n MBean but has no exposed attributes or operations ... but then everything seems to work fine, the problem is I can no longer access http://localhost:8080/manager/html using user tomcat /tomcat, as configured in \conf\tomcat-users.xml (before installing josso it worked) I tried with tomcat/tomcatpwd as defined in \lib\josso-credentials.xml and even added tomcat and the manager role to \lib\josso-users.xml, with no luck... Is anybody having the same problem? how can I access tomcat's manager page? Thanks a lot saludos sas This is my config: C:\tomcat\bincatalina version Using CATALINA_BASE: "C:\tomcat" Using CATALINA_HOME: "C:\tomcat" Using CATALINA_TMPDIR: "C:\tomcat\temp" Using JRE_HOME: "c:\java" Using CLASSPATH: "C:\tomcat\bin\bootstrap.jar" Server version: Apache Tomcat/6.0.26 Server built: March 9 2010 1805 Server number: 6.0.26.0 OS Name: Windows XP OS Version: 5.1 Architecture: x86 JVM Version: 1.5.0_22-b03 JVM Vendor: Sun Microsystems Inc ps: moreover, when shutting down, I get a couple of error like this GRAVE: A web application appears to have started a thread named [JOSSOAssertionM onitor] but has failed to stop it. This is very likely to create a memory leak. 21/03/2010 15:57:06 org.apache.catalina.loader.WebappClassLoader clearReferences Threads and then tomcat's shutdown freezes at 21/03/2010 15:57:07 org.apache.coyote.ajp.AjpAprProtocol destroy INFO: Parando Coyote AJP/1.3 en ajp-8009 ps: sorry for this lengthy question...

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• Model validation with enumerations

  - by Robert Koritnik

  I'm using DataAnnotations attributes to validate my model objects. My model class looks similar to this: public class MyModel { [Required] public string Title { get; set; } [Required] public List<User> Editors { get; set; } } public class User { public int Id { get; set; } [Required] public string FullName { get; set; } [Required] [DataType(DataType.Email)] public string Email { get; set; } } My controller action looks like: public ActionResult NewItem(MyModel data) { //... } User is presented with a view that has a form with: a text box with dummy name where users enter user's names. For each user they enter, there's a client script coupled with ajax that creates an <input type="hidden" name="data.Editors[0].Id" value="userId" /> for each user entered (enumeration index is therefore not always 0 as written here), so default model binder is able to consume and bind the form without any problems. a text box where users enter the title Since I'm using Asp.net MVC 2 RTM which does model validation instead of input validation I don't know how to avoid validation errors. The thing is I have to use BindAttribute on my controller action. I would have to either provide a white or a black list of properties. It's always a better practice to provide a white list. It's also more future proof. The problem My form works fine, but I get validation errors about user's FullName and Email properties since they are not provided. I also shouldn't feed them to the client (via ajax when user enters user data), because email is personal contact data and is not shared between users. If there was just a single user reference on MyModel I would write [Bind(Include = "Title, Editor.Id")] But I have an enumeration of them. How do I provide Bind white list to work with my model?

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• Trying to grab just absolute links from a webpage using BeautifulSoup

  - by Kevin

  I am reading the contents of a webpage using BeautifulSoup. What I want is to just grab the <a href> that start with http://. I know in beautifulsoup you can search by the attributes. I guess I am just having a syntax issue. I would imagine it would go something like. page = urllib2.urlopen("http://www.linkpages.com") soup = BeautifulSoup(page) for link in soup.findAll('a'): if link['href'].startswith('http://'): print links But that returns: Traceback (most recent call last): File "<stdin>", line 2, in <module> File "C:\Python26\lib\BeautifulSoup.py", line 598, in __getitem__ return self._getAttrMap()[key] KeyError: 'href' Any ideas? Thanks in advance. EDIT This isn't for any site in particular. The script gets the url from the user. So internal link targets would be an issue, that's also why I only want the <'a'> from the pages. If I turn it towards www.reddit.com, it parses the beginning links and it gets to this: <a href="http://www.reddit.com/top/">top</a> <a href="http://www.reddit.com/saved/">saved</a> Traceback (most recent call last): File "<stdin>", line 2, in <module> File "C:\Python26\lib\BeautifulSoup.py", line 598, in __getitem__ return self._getAttrMap()[key] KeyError: 'href'

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• Hidden features of Perl?

  - by Adam Bellaire

  What are some really useful but esoteric language features in Perl that you've actually been able to employ to do useful work? Guidelines: Try to limit answers to the Perl core and not CPAN Please give an example and a short description Hidden Features also found in other languages' Hidden Features: (These are all from Corion's answer) C# Duff's Device Portability and Standardness Quotes for whitespace delimited lists and strings Aliasable namespaces Java Static Initalizers JavaScript Functions are First Class citizens Block scope and closure Calling methods and accessors indirectly through a variable Ruby Defining methods through code PHP Pervasive online documentation Magic methods Symbolic references Python One line value swapping Ability to replace even core functions with your own functionality Other Hidden Features: Operators: The bool quasi-operator The flip-flop operator Also used for list construction The ++ and unary - operators work on strings The repetition operator The spaceship operator The || operator (and // operator) to select from a set of choices The diamond operator Special cases of the m// operator The tilde-tilde "operator" Quoting constructs: The qw operator Letters can be used as quote delimiters in q{}-like constructs Quoting mechanisms Syntax and Names: There can be a space after a sigil You can give subs numeric names with symbolic references Legal trailing commas Grouped Integer Literals hash slices Populating keys of a hash from an array Modules, Pragmas, and command-line options: use strict and use warnings Taint checking Esoteric use of -n and -p CPAN overload::constant IO::Handle module Safe compartments Attributes Variables: Autovivification The $[ variable tie Dynamic Scoping Variable swapping with a single statement Loops and flow control: Magic goto for on a single variable continue clause Desperation mode Regular expressions: The \G anchor (?{}) and '(??{})` in regexes Other features: The debugger Special code blocks such as BEGIN, CHECK, and END The DATA block New Block Operations Source Filters Signal Hooks map (twice) Wrapping built-in functions The eof function The dbmopen function Turning warnings into errors Other tricks, and meta-answers: cat files, decompressing gzips if needed Perl Tips See Also: Hidden features of C Hidden features of C# Hidden features of C++ Hidden features of Java Hidden features of JavaScript Hidden features of Ruby Hidden features of PHP Hidden features of Python

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• Database structure - is mySQL the right choice?

  - by Industrial

  Hi everyone, We are currently planning the database structure of a quite complex e-commerce web app that has flexibility as it's main cornerstone. Our app features a large amount of data (products) and we have run into a slight headache trying to keep performance high without compromizing normalization rules in the database, or leaving our highly beloved flexibility concept behind when integrating product options (also widely known as product attributes or parameters). Based on various references and sources available, we have made up lists on pros and cons of all major and well known database patterns to solve this. After comparing these, we have come up with two final alternatives: EAV (Entity-attribute-value model) : Pros: Database is used for all sorting. Cons: All related queries will include a number of joins between multiple tables in order to complete the collection of data. SLOB (Serialized LOB, also known as Facade?) : Pros: Very flexible. Keeping the number of necessary joins low compared to a EAV design pattern. Easy to update/add/remove data from each product. Cons: All sorting will be done by the application instead of the database. Will use lots of performance (memory?) when big datasets is processed by a large number of users. Our main questions: Which pattern/structure would you use, or maybe even a different solution? Is there better databases besides mySQL available nowadays to accomplish what we want? Thanks a lot! Reference: http://stackoverflow.com/questions/695752/product-table-many-kinds-of-product-each-product-has-many-parameters

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• Getting gridview column value as parameter for javascript function

  - by newName

  I have a gridview with certain number of columns and the ID column where I want to get the value from is currently set to visible = false. The other column is a TemplateField column (LinkButton) and as the user clicks on the button it will grab the value from the ID column and pass the value to one of my javascript function. WebForm: <script language=javascript> function openContent(contentID) { window.open('myContentPage.aspx?contentID=' + contentID , 'View Content','left=300,top=300,toolbar=no,scrollbars=yes,width=1000,height=500'); return false; } </script> <asp:GridView ID="gvCourse" runat="server" AutoGenerateColumns="False" OnRowCommand="gvCourse_RowCommand" OnRowDataBound="gvCourse_RowDataBound" BorderStyle="None" GridLines="None"> <RowStyle BorderStyle="None" /> <Columns> <asp:TemplateField> <ItemTemplate> <asp:LinkButton ID="lnkContent" runat="server" CommandName="View" CommandArgument='<%#Eval("contentID") %>' Text='<%#Eval("contentName") %>'> </asp:LinkButton> </ItemTemplate> </asp:TemplateField> <asp:BoundField DataField="contentID" HeaderText="contentID" ReadOnly="True" SortExpression="contentID" Visible="False" /> <asp:BoundField DataField="ContentName" HeaderText="ContentName" ReadOnly="True" SortExpression="ContentName" Visible="False" /> </Columns> <AlternatingRowStyle BorderStyle="None" /> Code behind: protected void gvCourse_RowCommand(object sender, GridViewCommandEventArgs e) { if (e.CommandName == "View") { intID = Convert.ToInt32(e.CommandArgument); } } protected void gvCourse_RowDataBound(object sender, System.Web.UI.WebControls.GridViewRowEventArgs e) { if (e.Row.RowType == DataControlRowType.DataRow) { ((LinkButton)e.Row.FindControl("lnkContent")).Attributes.Add("onclick", "return openContent('" + intID + "');"); } } right not i'm trying to get the intID based on user selected item so when the user clicks on the linkbutton it will open a popup window using javascript and the ID will be used as querystring.

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• Delegates in .NET: how are they constructed ?

  - by Saulius

  While inspecting delegates in C# and .NET in general, I noticed some interesting facts: Creating a delegate in C# creates a class derived from MulticastDelegate with a constructor: .method public hidebysig specialname rtspecialname instance void .ctor(object 'object', native int 'method') runtime managed { } Meaning that it expects the instance and a pointer to the method. Yet the syntax of constructing a delegate in C# suggests that it has a constructor new MyDelegate(int () target) where I can recognise int () as a function instance (int *target() would be a function pointer in C++). So obviously the C# compiler picks out the correct method from the method group defined by the function name and constructs the delegate. So the first question would be, where does the C# compiler (or Visual Studio, to be precise) pick this constructor signature from ? I did not notice any special attributes or something that would make a distinction. Is this some sort of compiler/visualstudio magic ? If not, is the T (args) target construction valid in C# ? I did not manage to get anything with it to compile, e.g.: int () target = MyMethod; is invalid, so is doing anything with MyMetod, e.g. calling .ToString() on it (well this does make some sense, since that is technically a method group, but I imagine it should be possible to explicitly pick out a method by casting, e.g. (int())MyFunction. So is all of this purely compiler magic ? Looking at the construction through reflector reveals yet another syntax: Func CS$1$0000 = new Func(null, (IntPtr) Foo); This is consistent with the disassembled constructor signature, yet this does not compile! One final interesting note is that the classes Delegate and MulticastDelegate have yet another sets of constructors: .method family hidebysig specialname rtspecialname instance void .ctor(class System.Type target, string 'method') cil managed Where does the transition from an instance and method pointer to a type and a string method name occur ? Can this be explained by the runtime managed keywords in the custom delegate constructor signature, i.e. does the runtime do it's job here ?

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• Is this a bug? : I get " The type ... is not a complex type or an entity type" in my WCF data servic

  - by veertien

  When invoking a query on the data service I get this error message inside the XML feed: <m:error> <m:code></m:code> <m:message xml:lang="nl-NL">Internal Server Error. The type 'MyType' is not a complex type or an entity type.</m:message> </m:error> When I use the example described here in the article "How to: Create a Data Service Using the Reflection Provider (WCF Data Services)" http://msdn.microsoft.com/en-us/library/dd728281(v=VS.100).aspx it works as expected. I have created the service in a .NET 4.0 web project. My data context class returns a query object that is derived from the LINQExtender (http://linqextender.codeplex.com/). When I execute the query object in a unit test, it works as expected. My entity type is defined as: [DataServiceKey("Id")] public class Accommodation { [UniqueIdentifier] [OriginalFieldName("EntityId")] public string Id { get; set; } [OriginalFieldName("AccoName")] public string Name { get; set; } } (the UniqueIdentifier and OriginalFieldName attributes are used by LINQExtender) Does anybody know if this is a bug in WCF data services or am I doing something wrong?

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• CSS Div Width Problem - Lining divs... widths seem to be off in IE7

  - by jlrolin

  So far, I'm doing this programmatically using VB.net/ASP.net: 'Create Container Div Dim ContainerDiv As New HtmlGenericControl("div") ContainerDiv.Style("width") = "100%" ContainerDiv.Style("clear") = "both" ContainerDiv.Style("text-align") = "left" ContainerDiv.Style("margin") = "0" 'Create Expand/Collapse Image Dim img As New Image img.ImageUrl = Page.ResolveUrl("~/images/minus99.jpg") img.Attributes.Add("onclick", "change(this.parent);") 'Create Company Display Dim lbl As New Label lbl.Text = Parsetext(pc.NAME) lbl.Font.Bold = True lbl.Style("font-size") = "16px" Dim NameDiv As New HtmlGenericControl("div") 'NameDiv.Style("background-color") = "#F0D3D3" NameDiv.Style("width") = "375px" NameDiv.Style("float") = "left" NameDiv.Style("margin") = "0" NameDiv.Style("display") = "block" NameDiv.Controls.Add(img) NameDiv.Controls.Add(lbl) ContainerDiv.Controls.Add(NameDiv) Dim SetupDiv As New HtmlGenericControl("div") SetupDiv.Style("background-color") = "#F0D3D3" SetupDiv.Style("width") = "210px" SetupDiv.Style("float") = "left" SetupDiv.Style("margin") = "0" SetupDiv.Style("display") = "block" 'SetupDiv.Style("position") = "fixed" ContainerDiv.Controls.Add(SetupDiv) Dim UsedDiv As New HtmlGenericControl("div") UsedDiv.Style("background-color") = "#CFF5CE" UsedDiv.Style("width") = "140px" UsedDiv.Style("float") = "left" UsedDiv.Style("margin") = "0" UsedDiv.Style("display") = "block" 'UsedDiv.Style("position") = "fixed" ContainerDiv.Controls.Add(UsedDiv) Dim RemDiv As New HtmlGenericControl("div") RemDiv.Style("background-color") = "#BEE0F7" 'RemDiv.Style("position") = "absolute" RemDiv.Style("width") = "210px" RemDiv.Style("float") = "right" RemDiv.Style("padding") = "0" RemDiv.Style("margin") = "0" RemDiv.Style("display") = "block" 'RemDiv.Style("position") = "fixed" ContainerDiv.Controls.Add(RemDiv) This should give me four DIVS inside a container DIV. Here's what it's coming out as: The correct blocks above the non-inline blocks are from a table with the same exact widths as the ones I'm using on the Divs. There isn't any CSS adding pixels to them, I don't think. I need to line these up, and I can't figure out where my problem is here. Any help would be appreciated.

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• C# Wholesale Order form - textboxes in Gridviews in Repeater

  - by tnriverfish

  I'm building a wholesale order form on a website. The current plan is to... -get an ArrayList of DepartmentUnits -a DepartmentUnit has various attributes like "deptId", "description" and its own ArrayList of StoreItems -The StoreItems have attached ArrayList of various SizeOptions -The SizeOptions have an inventory count integer along with their description -Planning on putting an asp:Repeater on the page that has an asp:GridView in it -Each DepartmentUnit will have its own GridView -EachStore item will have a row in the GridView -Each SizeOption will have a TextBox in the row (approximately 10 options) -Each inventory count will be watermarked over the size option textbox The question becomes how will I then collect all this information correctly once the form has been filled out? I don't like the idea of putting all this information in an update panel and then posting back each time a GridView row or worse one of the row's textboxes changes. Any advice on putting a single save button on the page and looping through each Repeater item - and each GridViewRow - and each textbox - to get all the values entered? Better to try collecting all the items added in a single table at the bottom of the page and updating the string with jquery each time a text box is modified? Then just looping through the new table when saved? Not sure I know how to loop through that table though - updating if quantity is changed might be a bear too. If it considerably simplifies the process I could just remove the Repeater aspect and put separate GridViews on separate pages. Thanks!

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• Binding XML in Sliverlight without Nominal Classes

  - by AnthonyWJones

  Lets say I have a simple chunck of XML:- <root> <item forename="Fred" surname="Flintstone" /> <item forename="Barney" surname="Rubble" /> </root> Having fetched this XML in Silverlight I would like to bind it with xaml of this ilke:- <ListBox x:Name="ItemList" Style="{StaticResource Items}"> <ListBox.ItemTemplate> <DataTemplate> <StackPanel Orientation="Horizontal"> <TextBox Text="{Binding Forename}" /> <TextBox Text="{Binding Surname}" /> </StackPanel> </DataTemplate> </ListBox.ItemTemplate> </ListBox> Now I can bind simply enough with LINQ to XML and a nominal class:- public class Person { public string Forename {get; set;} public string Surname {get; set;} } So here is the question, can it be done without this class? IOW coupling between the Sliverlight code and the input XML is limited to the XAML only, other source code is agnostic to the set of attributes on the item element. Edit: The use of XSD is suggested but ultimately it amounts the same thing. XSD-Generated class. Edit: An anonymous class doesn't work, Silverlight can't bind them. Edit: This needs to be two way, the user needs to be able to edit the values and these value end up in the XML. (Changed original TextBlock to TextBox in sample above).

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• rails use counts in diferent views

  - by Oluf Nielsen

  Hello i guess this is going to be pretty noob question.. But.. I have an scaffold called list, which has_many :wishes. And with that information in my model, I can in my list view use this code <%=h @list.wishes.count % well now I have made an controller called statusboard.. And in that' I have 3 functions.. Or how to say it.. but it is Index, loggedin, loggedout.. And .. In loggedin and in the file #app/views/statusboard/loggedin.html.erb i want to display this.. Howdy {Username}, you have made {count lists} lists, and {count wishes} wishes here is that i figured i should write in my file.. Howdy {Username}, you have made <%=h @user.list.count % lists, and <%=h @user.wishes.count % wishes my list model is like this = class List < ActiveRecord::Base   attr_accessible :user_id, :name, :description   belongs_to :users   has_many :wishes end and my wish model is like this = class Wish < ActiveRecord::Base   attr_accessible :list_id, :name, :price, :link, :rating, :comment   belongs_to :list end and last my user model is like this = class User < ActiveRecord::Base   # Include default devise modules. Others available are:   # :token_authenticatable, :lockable and :timeoutable   devise :database_authenticatable, :registerable,# :confirmable,              :recoverable, :rememberable, :trackable, :validatable   # Setup accessible (or protected) attributes for your model   attr_accessible :email, :password, :password_confirmation   has_many :lists end i hope someone can help me :-)! / Oluf Nielsen

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• like exec command in silverlight(save and load properties of Elements dynamically)

  - by Meysam Javadi

  i have some element in my container and want to save all properties of this elements. i list this element by VisualTreeHelper and save its attributes in DB, question is that how to retrieve this properties and affect them? i think that The Silverlight have some statement that behave like Exec in Sql-Server. i save properties in one line that delimited by semicolon.(if you have any suggestion ,appreciate) Edit: suppose this scenario: End-User choose a tool from Mytoolbox(a container like Grid) ,a dialog shown its properties for creation and finally draw Grid . in resumption he/she choose one element(like Button) and drop it on one of the grid's cell. now i want to save workspace that he/she created! My RootLayout have one container control so any of element are child of this.HERETOFORE i want create one string that contain all general properties(not all of them) and save to DB, and when i load this control, i create an element by the type that i saved and affect it by the properties that i saved; with something like EXEC command. is this possible ? have you new approach for this scenario(Guide me with example please).

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• Core Data migration of to-one relationship to to-many relationship

  - by westsider

  I have a deployed app that samples measurements from sensors (e.g., Temp °C, Pressure kPa). The user can create Experiments and collect samples. Each sample is stored as a Run, such that there is a one-to-many relationship from Experiment to Run. In the interest of performance, Run has a to-one relationship with Data entity (which is where the actual raw data is stored); this allows some Run attributes to be loaded without necessarily loading lots of data. Most of our sensors have multiple measurements, so it would be nice to store all the data that is actually being sampled. But this means that the Run <--- Data relationship needs to become Run <-- Data (to use Xcode's convention). I am faced with trying to migrate data from old Run to-one Data model to new Run to-many Data model. Can this be done using Mapping Models? If so, does anyone have any pointers to examples? If not, does anyone have any pointers to examples of how to do that? Thanks for any pointers or advice.

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• svcutil, WSDL, and the generated interfaces not being sufficient for implementation

  - by chtmd

  I have a WSDL file defining a service that I have to implement in WCF. I had read that I could generate the proxy using svcutil from the WSDL file, and that I could then use the generated interfaces to implement the service. Unfortunately, I can't quite seem to find a way to have the interfaces contain the correct attributes to expose the contracts. All operations have the "OperationContractAttribute" attribute, but it appears as though for the service to be exposed, I require the "OperationContract" for each one. Same thing with "ServiceContractAttribute" and "ServiceContract", and I imagine DataContract, but I haven't gotten that far. I could manually make these changes, but I would much prefer a technique where the existing code could be easily used, or better code could be generated for my uses. Is there some way that this can be done? Thanks. EDIT: Command used: svcutil ObjectManagerService.wsdl /n:*,Sample /o:ObjectManagerServiceProxy.cs /nologo Code sample: public interface ObjectManagerSyncPortType { // CODEGEN: Generating message contract since the operation createObject is neither RPC nor document wrapped. [System.ServiceModel.OperationContractAttribute(Action="http://www.sample.com/createObject", ReplyAction="*")] [System.ServiceModel.XmlSerializerFormatAttribute()] Sample.createObjectResponse1 createObject(Sample.createObjectRequest1 request); As best as I can tell/see the WSDL file is entirely self-contained and requires no additional XSD files.

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• Internationalized strings in Eclipse plugin.xml file are not found when installed in Eclipse applica

  - by Ed

  Hi, I have created 2 plugins, implementing an ODA driver plugin and its UI plugin for the BIRT extension to Eclipse. My plugins both work as expected when eclipse starts up another eclipse application where I can then test the plugins I am developing. However, when I install my plugins into an Eclipse application and then start it from a Windows shortcut, the plugins work but and language keys specified in the plugin.xml files are not found. For example, in my plugin.xml file for the ODA Driver plugin I set the attributes 'id' to '%oda.data.source.id' and the data source 'defaultDisplayName' to '%data.source.name'. I then, in a file 'language.properties', have defined the values for both of these keys (where the keys don't have the preceeding % character). When running the plugins that have been installed into the dropins/plugins directory of an Eclipse application, the wizard for creating my ODA data source names is as '%data.source.name' and saves the data source in the rptdesign (XML) file with an ID of '%oda.data.source.id'. Since 'language' is not the default name for the properties file I went into the manifest for both plugins and changed the 'Bundle-Localization' attribute to 'language'. The language file is located in the root directory of both of my plugins. The properties file is definitely found, since I use the two language files to store other strings used by the plugins, looked up using a java ResourceBundle. The strings are always found whether the plugins are run from Eclipse application loading another, or when properly installed in the dropins/plugins directory of an Eclipse application. Why are the installed plugins not finding language keys reference in the plugin.xml files? There are not errors in the logs and the language.properties files are clearly accessible... Thanks in advance.

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• Wrapped WPF Control

  - by Robert

  Hi, I'm trying to create a GUI (WPF) Library where each (custom) control basically wraps an internal (third party) control. Then, I'm manually exposing each property (not all of them, but almost). In XAML the resulting control is pretty straightforward: <my:CustomButton Content="ClickMe" /> And the code behind is quite simple as well: public class CustomButton : Control { private MyThirdPartyButton _button = null; static CustomButton() { DefaultStyleKeyProperty.OverrideMetadata(typeof(CustomButton), new FrameworkPropertyMetadata(typeof(CustomButton))); } public CustomButton() { _button = new MyThirdPartyButton(); this.AddVisualChild(_button); } protected override int VisualChildrenCount { get { return _button == null ? 0 : 1; } } protected override Visual GetVisualChild(int index) { if (_button == null) { throw new ArgumentOutOfRangeException(); } return _button; } #region Property: Content public Object Content { get { return GetValue(ContentProperty); } set { SetValue(ContentProperty, value); } } public static readonly DependencyProperty ContentProperty = DependencyProperty.Register( "Content", typeof(Object), typeof(CustomButton), new FrameworkPropertyMetadata(new PropertyChangedCallback(ChangeContent)) ); private static void ChangeContent(DependencyObject source, DependencyPropertyChangedEventArgs e) { (source as CustomButton).UpdateContent(e.NewValue); } private void UpdateContent(Object sel) { _button.Content = sel; } #endregion } The problem comes after we expose MyThirdPartyButton as a property (in case we don't expose something, we would like to give the programmer the means to use it directly). By simply creating the property, like this: public MyThirdPartyButton InternalControl { get { return _button; } set { if (_button != value) { this.RemoveVisualChild(_button); _button = value; this.AddVisualChild(_button); } } } The resulting XAML would be this: <my:CustomButton> <my:CustomButton.InternalControl> <thirdparty:MyThirdPartyButton Content="ClickMe" /> </my:CustomButton.InternalControl> And what I'm looking for, is something like this: <my:CustomButton> <my:CustomButton.InternalControl Content="ClickMe" /> But (with the code I have) its impossible to add attributes to InternalControl... Any ideas/suggestions? Thanks a lot, -- Robert

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• Is Berkeley DB XML a viable database backend?

  - by w00t

  Apparently, BDB-XML has been around since at least 2003 but I only recently stumbled upon it on Oracle's website: Berkeley DB XML. Here's the blurb: Oracle Berkeley DB XML is an open source, embeddable XML database with XQuery-based access to documents stored in containers and indexed based on their content. Oracle Berkeley DB XML is built on top of Oracle Berkeley DB and inherits its rich features and attributes. Like Oracle Berkeley DB, it runs in process with the application with no need for human administration. Oracle Berkeley DB XML adds a document parser, XML indexer and XQuery engine on top of Oracle Berkeley DB to enable the fastest, most efficient retrieval of data. To me it seems that the underlying ideas are technically sound and probably more mature than the newer document-based DBs like CouchDB or MongoDB. It has support for C, C++, Ruby and Perl, as far as I can determine. It even has HA-capabilities like automatic replication using a master/slave model with automatic election. However, I can't seem to find any projects that use it. Is there something fundamentally wrong with it? Is the license too onerous? Is it too complicated? Why is it not being used?

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• HTMLAgilitypack getting <P> and <STRONG> text

  - by StealthRT

  Hey all i am looking for a way to get this HTML code: <DIV class=channel_row><SPAN class=channel> <DIV class=logo><IMG src='/images/channel_logos/WGNAMER.png'></DIV> <P><STRONG>2</STRONG><BR>WGNAMER </P></SPAN> using the HtmlAgilityPack. I have been trying this: With channel info!Logo = .SelectSingleNode(".//img").Attributes("src").Value info!Channel = .SelectSingleNode(".//span[@class='channel']").ChildNodes(1).ChildNodes(0).InnerText info!Station = .SelectSingleNode(".//span[@class='channel']").ChildNodes(1).ChildNodes(2).InnerText End With I can get the Logo but it comes up with a blank string for the Channel and for the Station it says Index was out of range. Must be non-negative and less than the size of the collection. I've tried all types of combinations: info!Station = .SelectSingleNode(".//span[@class='channel']").ChildNodes(1).ChildNodes(1).InnerText info!Station = .SelectSingleNode(".//span[@class='channel']").ChildNodes(1).ChildNodes(3).InnerText info!Station = .SelectSingleNode(".//span[@class='channel']").ChildNodes(0).ChildNodes(1).InnerText info!Station = .SelectSingleNode(".//span[@class='channel']").ChildNodes(0).ChildNodes(2).InnerText info!Station = .SelectSingleNode(".//span[@class='channel']").ChildNodes(0).ChildNodes(3).InnerText What do i need to do in order to correct this?

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• Rendering a control generates security exception in .Net 4

  - by Jason Short

  I am having a problem with code that worked fine in .Net 2 giving this error under .Net 4. Build (web): Inheritance security rules violated while overriding member: 'Controls.RelatedPosts.RenderControl(System.Web.UI.HtmlTextWriter)'. Security accessibility of the overriding method must match the security accessibility of the method being overriden. This is in DotNetBlogEngine. There were several other security demands in the code that .Net 4 didn't seem to like. I followed some of the advice I found on blogs (and here) and got rid of all the other errors. But this one still eludes me. The Main blogengine core dll is not set for security demands anylonger and is compiled for .Net 4 as well. This error is in the website side attempting to use the dll. There are controls that call a RenderControl method taking an HtmlTextWriter. Apparently the text writer now has some soft of security attributes set on it. Each of the controls implements a custom interface ( public interface ICustomFilter ), there are no security permissions present or demands. The site is running full trust on my local dev machine.

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• Why is Assembly.GetCustomAttributes suddenly throwing TypeLoadException on build machine with Silver

  - by andrej351

  A short while back i had to display the current version of our Silverlight app. After some googling the following code gave me the desired result: var fileVersionAttributes = typeof(MyClass).Assembly. GetCustomAttributes(typeof(AssemblyFileVersionAttribute), false) as AssemblyFileVersionAttribute[]; var version = fileVersionAttributes[0].Version; This worked a treat in our .NET 3.5 Silverlight 3 environment. However, we recently upgraded to .NET 4 and Silverlight 4. We just finished getting our build machine working and found that the unit test for this code was throwing the following exception: Exception Message: System.TypeLoadException: Error 0x80131522. Debugging resource strings are unavailable. See http://go.microsoft.com/fwlink/?linkid=106663&Version=3.0.50106.0&File=mscorrc.dll&Key=0x80131522 at System.ModuleHandle.ResolveType(ModuleHandle module, Int32 typeToken, RuntimeTypeHandle* typeInstArgs, Int32 typeInstCount, RuntimeTypeHandle* methodInstArgs, Int32 methodInstCount) at System.ModuleHandle.ResolveTypeHandle(Int32 typeToken, RuntimeTypeHandle[] typeInstantiationContext, RuntimeTypeHandle[] methodInstantiationContext) at System.Reflection.Module.ResolveType(Int32 metadataToken, Type[] genericTypeArguments, Type[] genericMethodArguments) at System.Reflection.CustomAttribute.FilterCustomAttributeRecord(CustomAttributeRecord caRecord, MetadataImport scope, Assembly& lastAptcaOkAssembly, Module decoratedModule, MetadataToken decoratedToken, RuntimeType attributeFilterType, Boolean mustBeInheritable, Object[] attributes, IList derivedAttributes, RuntimeType& attributeType, RuntimeMethodHandle& ctor, Boolean& ctorHasParameters, Boolean& isVarArg) at System.Reflection.CustomAttribute.GetCustomAttributes(Module decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType, Boolean mustBeInheritable, IList derivedAttributes, Boolean isDecoratedTargetSecurityTransparent) at System.Reflection.CustomAttribute.GetCustomAttributes(Module decoratedModule, Int32 decoratedMetadataToken, Int32 pcaCount, RuntimeType attributeFilterType, Boolean isDecoratedTargetSecurityTransparent) at System.Reflection.CustomAttribute.GetCustomAttributes(Assembly assembly, Type caType) at System.Reflection.Assembly.GetCustomAttributes(Type attributeType, Boolean inherit) at MyCode.VersionTest() I have never seen this exception before and the link in it points nowhere. It is only throwing on the build machine and not on my development box, so i'm going through a process of trial and error to see any differences between the two. Any idea why this might be happening?? Cheers, Andrej.

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• Using YQL multi-query & XPath to parse HTML, how to escape nested quotes?

  - by Tivac

  The title is more complicated than it has to be, here's the problem query. SELECT * FROM query.multi WHERE queries=" SELECT * FROM html WHERE url='http://www.stumbleupon.com/url/http://www.guildwars2.com' AND xpath='//li[@class=\"listLi\"]/div[@class=\"views\"]/a/span'; SELECT * FROM xml WHERE url='http://services.digg.com/1.0/endpoint?method=story.getAll&link=http://www.guildwars2.com'; SELECT * FROM json WHERE url='http://api.tweetmeme.com/url_info.json?url=http://www.guildwars2.com'; SELECT * FROM xml WHERE url='http://api.facebook.com/restserver.php?method=links.getStats&urls=http://www.guildwars2.com'; SELECT * FROM json WHERE url='http://www.reddit.com/button_info.json?url=http://www.guildwars2.com'" Specifically this line, xpath='//li[@class=\"listLi\"]/div[@class=\"views\"]/a/span' It's problematic because of the quoting, I have to nest them three levels deep and I've run out of quote characters to use. I've tried the following variations without success: //no attribute quoting xpath='//li[@class=listLi]/div[@class=views]/a/span' //try to quote attribute w/ backslash & single quote xpath='//li[@class=\'listLi\']/div[@class=\'views\']/a/span' //try to quote attribute w/ backslash & double quote xpath='//li[@class=\"listLi\"]/div[@class=\"views\"]/a/span' //try to quote attribute with double single quotes, like SQL xpath='//li[@class=''listLi'']/div[@class=''views'']/a/span' //try to quote attribute with double double quotes, like SQL xpath='//li[@class=""listLi""]/div[@class=""views""]/a/span' //try to quote attribute with quote entities xpath='//li[@class=&quot;listLi&quot;]/div[@class=&quot;views&quot;]/a/span' //try to surround XPath with backslash & double quote xpath=\"//li[@class='listLi']/div[@class='views']/a/span\" //try to surround XPath with double double quote xpath=""//li[@class='listLi']/div[@class='views']/a/span"" All without success. I don't see much out there about escaping XPath strings but everything I've found seems to be variations on using concat (which won't help because neither ' nor " are available) or html entities. Not using quotes for the attributes doesn't throw an error but fails because it's not the actual XPath string I need. I don't see anything in the YQL docs about how to handle escaping. I'm aware of how edge-casey this is but was hoping they'd have some sort of escaping guide.

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