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  • How to debug applications using COM interfaces?

    - by Eric
    I' building an application using C# which will use CATIA COM modules. When I import the COM inside my c# project, I think that Visual C# express generates the Interop automagically for me. All of this works correctly. However, when I try to debug the application and use watches during runtime, every object is a System.__ComObject and I cannot get their "real" value. Is there a way to tell the debugger the types of my COM objects? The goal is to get more familiar with this new API I don't know really well. Sometimes its rather hard to guess the correct types for everything since the interface hierarchy is quite deep

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  • Is this the correct way of speaking to a "Content Manager" Class?

    - by DeanMc
    I am creating a silverlight site. I am currently breaking out my ideas into pieces of functionality. One of the idea's I have is the concept of a content manager. This is essentially a UI control with 4 regions. Top, Bottom, Right & Left. I also have a collection of objects that are considered "Menu Items". These are controls that function as a way to navigate around, similar to links. The idea I have is to implement an IMenuItem interface. Among the standard pieces of information (Text, PageReference, etc) I was also going to hold a reference to the content manager. My idea behind this thinking is that I can pass the PageReference to a property on the ContentManager and then call a method which knows how to update the content manager accordingly. Is this the best way of implementing this or is their some sort of pattern for it?

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  • WCF Proxy generation

    - by dragonfly
    Hi, I'm generating proxy using svcutil tool. My contract methods return objects of particular type. However generated proxy client interface has return value of type object. What is more I get exception with message: System.ServiceModel.FaultException`1[System.ServiceModel.ExceptionDetail] : The formatter threw an exception while trying to deserialize the message: There was an error while trying to deserialize parameter http://tempuri.org/:name. The InnerException message was 'XML 'Element' 'http://tempuri.org/:name' does not contain expected attribute 'http://schemas.microsoft.com/2003/10/Serialization/:Type'. The deserializer has no knowledge of which type to deserialize. Check that the type being serialized has the same contract as the type being deserialized.'. Please see InnerException for more details. Any ideas what's going on?

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  • Date object to Calendar [Java]

    - by Samuel
    Hello World, I have a class Movie in it i have a start Date, a duration and a stop Date. Start and stop Date are Date Objects (private Date startDate ...) (It's an assignment so i cant change that) now i want to automatically calculate the stopDate by adding the duration (in min) to the startDate. By my knowledge working with the time manipulating functions of Date is deprecated hence bad practice but on the other side i see no way to convert the Date object to a calendar object in order to manipulate the time and reconvert it to a Date object. Is there a way? And if there is what would be best practice Thanks in advance Samuel

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  • Python serialize lexical closures?

    - by dsimcha
    Is there a way to serialize a lexical closure in Python using the standard library? pickle and marshal appear not to work with lexical closures. I don't really care about the details of binary vs. string serialization, etc., it just has to work. For example: def foo(bar, baz) : def closure(waldo) : return baz * waldo return closure I'd like to just be able to dump instances of closure to a file and read them back. Edit: One relatively obvious way that this could be solved is with some reflection hacks to convert lexical closures into class objects and vice-versa. One could then convert to classes, serialize, unserialize, convert back to closures. Heck, given that Python is duck typed, if you overloaded the function call operator of the class to make it look like a function, you wouldn't even really need to convert it back to a closure and the code using it wouldn't know the difference. If any Python reflection API gurus are out there, please speak up.

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  • Dynamic Tree control in Flex 3

    - by nimmyliji
    I am looking for sample code to create a dynamic Tree control in Flex using a Collection of objects obtained from the backend(Perl cgi). So, initially the Tree will display the root nodes. Clicking root node, will invoke the data for populating the child nodes (basically adding child nodes on demand). Clicking child nodes will pull another collection add child nodes of child node. So, lets assume Initially the Tree will display - Root1 Root2 Root3 Clicking Root1 will display something like this - Root1 Child 1 Child 2 Root2 Root3 And Clicking Child1 will display - Root1 Child 1 Child1 of Child 1 Child2 of Child 1 Child 2 Root2 Root3 Is it possible? Thanks in advance...

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  • How to use role-hierarchy in Spring Security 3 with Spring EL?

    - by Aleksey
    I want to use @PreAuthorize annotation on service methods with Spring Security. One of requirements is to use role-hierarchy. But by default it is not enabled. I found that in SecurityExpressionRoot class ("the base class for expression root objects") there is a property roleHierarchy. The class actually does use this property for methods like hasRole() and hasAnyRole(). I suppose that if I supply it with my own RoleHierarchy bean I will be able to use @PreAuthorize annotations with hierarchical roles. How can I inject my hierarchy bean into SecurityExpressionRoot?

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  • Creating a common selector class with UITableView or UIPicker

    - by trevrosen
    I have several places in my app where I need to select a Foo for further processing from a list of Foo objects. I'd like to do this as a modal view, but neither UIPicker nor UITableView seems to lend itself to the standard approach, since the usual way to do a modal view controller involves setting the parent view controller up as the delegate, and both of those classes need to implement data source protocols, etc. Implementing the data source and selection protocol methods in my parent view controller defeats the purpose of trying to use one common class for implementing this modal selector screen all over my app. Does anyone have any solutions to this problem or am I effectively stuck implementing this selector class over and over again?

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  • Show choosen option in a notification Feed, Django

    - by apoo
    Hey I have a model where : LIST_OPTIONS = ( ('cheap','cheap'), ('expensive','expensive'), ('normal', 'normal'), ) then I have assigned the LIST_OPTIONS to nature variable. nature = models.CharField(max_length=15, choices=LIST_OPTIONS, null=False, blank=False). then I save it: if self.pk: new=False else: new=True super(Listing, self).save(force_insert, force_update) if new and notification: notification.send(User.objects.all().exclude(id=self.owner.id), "listing_new", {'listing':self, }, ) then in my management.py: def create_notice_types(app, created_models,verbosity, **kwargs): notification.create_notice_type("listing_new", _("New Listing"), _("someone has posted a new listing"), default=2) and now in my notice.html I want to show to users different sentences based on the options that they have choose so something like this: LINK href="{{ listing.owner.get_absolute_url }} {{listing.owner}} {% ifequal listing.nature "For Sale" %} created a {{ listing.nature }} listing, <a href="{{ listing.get_absolute_url }}">{{listing.title}}</a>. {% ifequals listing.equal "Give Away"%} is {{ listing.nature }} , LINK href="{{ listing.get_absolute_url }}" {{listing.title}}. {% ifequal listing.equal "Looking For"%} is {{ listing.nature }} , LINK href="{{ listing.get_absolute_url }}" {{listing.title}} {% endifequal %} {% endifequal %} {% endifequal %} Could you please help me out with this. Thank you

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  • What to put as the Provider for a mocked IQueryable

    - by Vaccano
    I am working with Moles and mocking a System.Data.Linq.Table. I got it constructing fine, but when I use it, it wants IQueryable.Provider to be mocked (moled) as well. I just want it to use normal Linq To Objects. Any idea what that would be? Here is the syntax I can use: MTable<User> userTable = new System.Data.Linq.Moles.MTable<User>(); userTable.Bind(new List<User> { UserObjectHelper.TestUser() }); // this is the line that needs help MolesDelegates.Func<IQueryProvider> provider = //Insert provider here! ^ userTable.ProviderSystemLinqIQueryableget = provider | | | what can I put here? ----------------------------------------+

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  • WCF Data Services implementation strategies.

    - by Nix
    Microsoft has done a savvy job of not outlining the actual place for data services in the wonderful world of SOA/Web dev. So my question is simple, are WCF Data Services designed to be used via clients? Or has anyone ever heard of someone using them on the server side? Simple scenario a general layered architecture using BO business objects (parenthesis indicate what is being passed between layers) (XML) WCF Service - (BO)Business Logic - (BO) Dao - Entity Framework or using data services it would be where DS BO are modeled business entities to be used in data service. (XML) WCF Service -(BO) Business Logic - (BO) WCF Data Service - (DS BO)Server I can't see a use for the later, unless there are going to be a lot of cases people would be accessing your data via your Data Service Layer vs the Service layer? Thoughts anyone? I have not seen any mention of using DS from within a Service Layer....

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  • Best approach for authorisation rules

    - by Maciej
    I'm wonder about best approach of implementation auth. rules in Client-Server app using Business Objects. I've noticed common tactic is: - on DB side: implement one role for application, used for all app's users - definition users right and roles and assign users to proper group - Client side: add to Business Object's getters/setters rights checker allowing write / display data for particular user My concern is if this is really good approach from security perspective. It looks DB sends all information to Client, and then client's logic decide what to display or not. So, potentially advanced user can make query from their box and see/change anything. Isn't it?

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  • Dojo: drag and drop Stop Drag

    - by Jose L Martinez-Avial
    Hi, I'm trying to use Dojo dnd Source(1.4.2) to create an interface where I can move some objects from a Source to a Target. It is working fine, but I want to change the behaviour in order to execute a check before actually doing the D&D, so if the check fails, an error message is shown to the user, and the D&D is not made. I've tried the following example I found in a blog: dojo.subscribe("/dnd/drop", function(source,nodes,iscopy) { if (nodes[0].id == 'docs_menu'){ dojo.publish("/dnd/cancel"); dojo.dnd.manager().stopDrag(); alert("Drop is not permitted"); } } ); But it fails saying that this.avatar is null. Does anybody know how to do this? Thanks. Jose

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  • known memory leaks in 3ds max?

    - by Denise
    I've set up a script in 3ds max to render a bunch of animations into frames. To do this, I open up a file with all of the materials, load an animation (as a bip) onto the figure, then render. We were seeing a problem where eventually the script would fail because it was unable to open the next file-- max had consumed all of the system memory. Closing max, of course, freed the memory, and we were able to continue with the script. I checked out the heapfree variable, hoping to see a memory leak within my script, hoping to see a memory leak within my own (maxscript) code-- but the amount of free space was the same after every animation. Then, it must be 3ds max which is consuming all of that memory. Nothing in max need be saved from animation to animation-- is there some way to get max to free that memory? (I've tried resetMaxFile() and manually deleting all of the objects in the scene). Is there any known sets of operations that cause max to grow out of control?

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  • Debuging VBScript in Visual Studios Express

    - by Wil
    I have read around the net that its possible to debug VBScript WSH files Visual Studios 2005 Express (I think Web Edition) but everytime I try cscript.exe myscript.vbs //X the script just executes. I have tried VS Express 2005, 2008 and 2010 all editions. I have also tried Visual Studios Premium 2010 which does infact debug scripts as I would expect however I want to be able to debug scripts with free tools (I don't want to get a VS 2010 licence for all the other people on my team). I know about Microsoft Script Debugger but it doesn't let you discover objects as well as Visual studios does.

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  • Nested attributes in the index view?

    - by user283179
    How would I show one of many nested objects in the index view class Album < ActiveRecord::Base has_many: photos accepts_nested_attributes_for :photos, :reject_if => proc { |a| a.all? { |k, v| v.blank?} } has_one: cover accepts_nested_attributes_for :cover end class Album Controller < ApplicationController layout "mini" def index @albums = Album.find(:all, :include => [:cover,]).reverse respond_to do |format| format.html # index.html.erb format.xml { render :xml => @albums } end end This is what I have so fare. I just want to show a cover for each album. Any info on this would be a massive help!!

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  • POJO's versus Cursors in Android

    - by Kilnr
    I usually tend to define the model layer of my apps using POJO's, such as Article, Comment, etc. I was about to implement an AlphabetIndexer in the adapter of one of my ListViews. Right now this adapter accepts a Collection of Articles, which I normally get from my wrapper around an SQLiteDatabase. The signature of the AlphabetIndexer constructer is as follows: public AlphabetIndexer (Cursor cursor, int sortedColumnIndex, CharSequence alphabet) Since this doesn't accept a Collection or something similar, just a Cursor, it got me wondering: maybe I shouldn't be creating objects for my model, and just use the Cursors returned from the database? So the question is, I guess: what should I do, represent data with Collections of POJO's, or just work with Cursors throughout my app? Any input?

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  • Drop on NSTableView Behavior

    - by dave-gennel
    Hi, I have an NSTableView and I have successfully implemented both tableView:validateDrop:proposedRow:proposedDropOperation: and tableView:acceptDrop:row:dropOperation:. I don't need tableView:writeRowsWithIndexes:toPasteboard: because that's for dragging objects out of the NSTableView. Now, the problem is that I want it to behave kind of iTunes-like. In iTunes 9.x (I don't remember it for the previous versions) you have an NSTableView (the playlist) and when you drag a file over it you get this blue focus inside the NSTableView (maybe it's the NSScrollView?) and you don't have the blue horizontal line that indicates where you're going to insert an object. So basically I would like: No blue horizontal insert line between rows when hovering a file over the NSTableView. The blue focus inside the NSTableView (or NSScrollView). Any help would be greatly appreciated so thank you in advance.

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  • ICommand.CanExecute being passed null even though CommandParameter is set...

    - by chaiguy
    I have a tricky problem where I am binding a ContextMenu to a set of ICommand-derived objects, and setting the Command and CommandParameter properties on each MenuItem via a style: <ContextMenu ItemsSource="{Binding Source={x:Static OrangeNote:Note.MultiCommands}}"> <ContextMenu.Resources> <Style TargetType="MenuItem"> <Setter Property="Header" Value="{Binding Path=Title}" /> <Setter Property="Command" Value="{Binding}" /> <Setter Property="CommandParameter" Value="{Binding Source={x:Static OrangeNote:App.Screen}, Path=SelectedNotes}" /> ... However, while ICommand.Execute( object ) gets passed the set of selected notes as it should, ICommand.CanExecute( object ) (which is called when the menu is created) is getting passed null. I've checked and the selected notes collection is properly instantiated before the call is made (in fact it's assigned a value in its declaration, so it is never null). I can't figure out why CanEvaluate is getting passed null.

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  • Rails migration to add boolean column to Postgres on Heroku

    - by pmc255
    I'm trying to execute a simple Rails migration to add a boolean column to an existing table. Here's the add_column call: add_column :users, :soliciting, :boolean, :null => false, :default => false However, after the migration runs (successfully, with no errors), I don't see the new column. If I go into the console and list the columns on the User table, for example, with this command: >> User.columns.each { |c| puts "#{c.name} : #{c.type}" } All the other columns show up, but not the one I just added with the migration. What's even more strange is that looking up a random user object yields the Postgres version of booleans (Ruby strings) >> User.find(1).soliciting => "t" However, the existing boolean columns all show up with standard Ruby boolean values of true and false. What's going on here? Is the migration actually complete? Why doesn't the column show up, yet is accessible in the model objects?

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  • LINQPad - Dump extension method - I want one!

    - by gav
    Hi, LINQPad is amazing, particularly useful is the Dump() extension methods which renders objects and structs of almost any type, anonymous or not, to the console. Initially, when I moved to Visual Studio 2010, I tried to make my own Dump method using a delegate to get the values to render for anonymous types etc. It's getting pretty complicated though and whilst it was fun and educational at first what I need is a solid implementation. Having checked out the LinqPad code in reflector I am even more assured that I'm not going to get the implementation right. Is there a free library I can include to provide the Dump functionality? Thanks, Gavin

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  • Python: Which encoding is used for processing sys.argv?

    - by EOL
    What encoding are the elements of sys.argv in, in Python? are they encoded with the sys.getdefaultencoding() encoding? sys.getdefaultencoding(): Return the name of the current default string encoding used by the Unicode implementation. PS: As pointed out in some of the answers, sys.stdin.encoding would indeed be a better guess. I would love to see a definitive answer to this question, though, with pointers to solid sources! PPS: As Wim pointed out, Python 3 solves this issue by putting str objects in sys.argv (if I understand correctly). The question remains open for Python 2.x, though. Under Unix, the LC_CTYPE environment variable seems to be the correct thing to check, no? What should be done with Windows (so that sys.argv elements are correctly interpreted whatever the console)?

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  • Cocoa Memory Usage

    - by user288024
    I'm trying to track down some peculiar memory behavior in my Cocoa desktop app. My app does a lot of image processing using NSImage and uploads those images to a website over HTTP using NSURLConnection. After uploading several hundred images (some very large), when I run Instrument I get no leaks. I've also run through MallocDebug and get no leaks. When I dig into object allocations using Instrument I get output like this: GeneralBlock-9437184, Net Bytes 9437184, # Net 1 GeneralBlock-192512, Net Bytes 2695168, # Net 14 and etc., for smaller sizes. When I look at these in detail, they're marked as being owned by 'Foundation' and created via NSConcreteMutableData initWithCapacity. During HTTP upload I'm creating a post body using NSMutableData, so I'm guessing these are buffers Cocoa is caching for me when I create the NSMutableData objects. Is there a way to force Cocoa to free these? I'm 90% positive I'm releasing correctly (and Instruments and MallocDebug seem to confirm this), but I think Cocoa is keeping these around for perf reasons since I'm allocating so many MSMutableData buffers.

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  • Django Managers

    - by owca
    I have the following models code : from django.db import models from categories.models import Category class MusicManager(models.Manager): def get_query_set(self): return super(MusicManager, self).get_query_set().filter(category='Music') def count_music(self): return self.all().count() class SportManager(models.Manager): def get_query_set(self): return super(MusicManager, self).get_query_set().filter(category='Sport') class Event(models.Model): title = models.CharField(max_length=120) category = models.ForeignKey(Category) objects = models.Manager() music = MusicManager() sport = SportManager() Now by registering MusicManager() and SportManager() I am able to call Event.music.all() and Event.sport.all() queries. But how can I create Event.music.count() ? Should I call self.all() in count_music() function of MusicManager to query only on elements with 'Music' category or do I still need to filter through them in search for category first ?

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  • Asking Box2d if a collision happened

    - by Rosarch
    I'm using Box2dx (ported to C#; optimized for XNA). It handles collision resolution, but how can I tell if two objects are currently colliding? This is the function I'm trying to write: public bool IsColliding(GameObjectController collider1, GameObjectController collider2) Where collider1.Model.Body is the Box2d Body, and collider1.Model.BodyDef is the Box2d BodyDef. (The same goes for collider2, of course.) UPDATE: Looks like contact listeners or this could be useful: AABB collisionBox; model.Body.GetFixtureList().GetAABB(out collisionBox); Why does GetFixtureList() return one fixture?

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