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  • Correct way of using/testing event service in Eclipse E4 RCP

    - by Thorsten Beck
    Allow me to pose two coupled questions that might boil down to one about good application design ;-) What is the best practice for using event based communication in an e4 RCP application? How can I write simple unit tests (using JUnit) for classes that send/receive events using dependency injection and IEventBroker ? Let’s be more concrete: say I am developing an Eclipse e4 RCP application consisting of several plugins that need to communicate. For communication I want to use the event service provided by org.eclipse.e4.core.services.events.IEventBroker so my plugins stay loosely coupled. I use dependency injection to inject the event broker to a class that dispatches events: @Inject static IEventBroker broker; private void sendEvent() { broker.post(MyEventConstants.SOME_EVENT, payload) } On the receiver side, I have a method like: @Inject @Optional private void receiveEvent(@UIEventTopic(MyEventConstants.SOME_EVENT) Object payload) Now the questions: In order for IEventBroker to be successfully injected, my class needs access to the current IEclipseContext. Most of my classes using the event service are not referenced by the e4 application model, so I have to manually inject the context on instantiation using e.g. ContextInjectionFactory.inject(myEventSendingObject, context); This approach works but I find myself passing around a lot of context to wherever I use the event service. Is this really the correct approach to event based communication across an E4 application? how can I easily write JUnit tests for a class that uses the event service (either as a sender or receiver)? Obviously, none of the above annotations work in isolation since there is no context available. I understand everyone’s convinced that dependency injection simplifies testability. But does this also apply to injecting services like the IEventBroker? This article describes creation of your own IEclipseContext to include the process of DI in tests. Not sure if this could resolve my 2nd issue but I also hesitate running all my tests as JUnit Plug-in tests as it appears impractible to fire up the PDE for each unit test. Maybe I just misunderstand the approach. This article speaks about “simply mocking IEventBroker”. Yes, that would be great! Unfortunately, I couldn’t find any information on how this can be achieved. All this makes me wonder whether I am still on a "good path" or if this is already a case of bad design? And if so, how would you go about redesigning? Move all event related actions to dedicated event sender/receiver classes or a dedicated plugin?

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  • [Word2007] How to showing "only number" in picture cross-reference

    - by kornelijepetak
    I have many pictures in a document and I reference them very often in text. I don't want to lose the order so I am using Insert - Cross-reference. This opens the cross-reference dialog where I can set Reference type to Picture. For "Insert reference to", there are 5 choices: - Entire caption - List item - Only label and number - Only caption text - Page number, Above/below What I need is a reference that would be inserted like this: [4], and not like this: [Picture 4]; None of these options enable me to do it. Is there any way to make Word 2007 insert a reference to only Caption Number? Note: The document is written in Croatian language which has 7 declension cases, so using "Picture 4" would not be valid in all cases. Actually caption label Picture is set to croatian word "Slika" and when I need to say say "in the picture" I can't because it would be "na Slici 5." and not "na Slika 5." (like Word would make me do). That's why I need to reference only the caption number. Is that possible in Word 2007?

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  • Why does deploying a .NET Compact Framework assembly cause .NET Desktop Framework assemblies to be d

    - by Matthew Belk
    I am trying to get one of my developers set up to work on a fairly large .NETCF project. When we try to simply deploy the solution and all of its projects to a target device, deploying one of the projects triggers several assemblies from the desktop framework to be copied from the GAC to the device. What on earth could cause this? The assemblies from the "big" framework are ones like System.DirectoryServices, System.Design, and a bunch of others.

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  • Common Wpf pitfalls

    - by Patrick Klug
    I want to gather a list of WPF pitfalls. Issues with WPF that are not that well known and either have some serious design consequences or some major inconveniences. One topic per answer. List: Mouse.GetPosition() does not always return a correct value. The Wpf layout recursion limit is hard coded to 255.

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  • Mod Rewrite Trouble

    - by Adrian
    I want to have a main section which is found on services.php and then some sub-sections like services_logodesign.php. I want to make url's look like: When I click a button to open services_logodesign.php the browser should show "services/logo design" I have several other sub-sections, it will be nice to have one code for any other pages.

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  • MVVM Binding Password

    - by LnDCobra
    I am re-factoring my application to implement the MVVM design and i came across my first problem... Compiler won't let me bind to the Password property of the PasswordBox control. Anyone have any ideas / suggestions.

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  • adding jpanel into a jframe. netbeans

    - by stdnoit
    i am particularly using netbeans gui editor and i am new to gui i have a jframe created and I added jtabbedpanel. inside the jtabbedpanel i have 2 panels that i call standard and compact i have set standardPanel = new ImagePanel(); which ImagePanel.java is located on different java file how am I suppose to put a panel on different file for reusability ? i obviously dont want all the codes in a single file. is this the right way to design a gui ? thanks

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  • Best way to model Installation logic/flow

    - by Ian
    Hi All, We are currently working on designing the installer for our product. We are currently on the design phase and I'm wondering what is the best diagram (UML or not) to use when modeling installation logic or flow? Currently, we are using the good'ol flowchart. Thanks!

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  • What is a service provider?

    - by Joey
    Sorry if this is a silly question but I am a C developer who just happen to be in a meeting with a bunch of .NET guys and over heard their conversation. They were sketching out a design and constantly talk of service provider, services and spring. Instead of looking silly by asking them, I just decided to post here. BTW, I am doing device driver development (have been for more than 10 years using C) and NEVER heard of service provider.

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  • Error creating ODBC connection to SQL Server 2008 Express

    - by DavidB
    When creating a System DSN, I get the error: Connection failed: SQLState: '08001' SQL Server Error: 2 [Microsoft][SQL Server Native Client 10.0]Named Pipes Provider: Could not open a connection to SQL Server [2]. Connection failed: SQLState: 'HYT00' SQL Server Error: 0 [Microsoft][SQL Server Native Client 10.0]Login timeout expired I'm running Vista Home Premium 64-bit SP2, and installed SQL Server 2008 Express Advanced without errors. I'll be using the database locally for an app installed on the same PC. I'm able to successfully connect with SQL Server Management Studio using Windows Authentication (my Windows account is a member of local Administrators), and I can successfully create a database with default ownership (defaults to my Windows account). SQL Server Configuration Manager shows that Shared Memory, TCP/IP, and Named Pipes are enabled for SQL Native Client 10.0 Configuration, SQL Native Client 10.0 Configuration (32bit), and SQL Server Network Configuration (SQLEXPRESS). The SQL Server (SQLEXPRESS) and SQL Server Reporting Services (SQLEXPRESS) services are running. When I create a system DSN, my driver choices are SQL server (sqlsrv32.dll 4-10-09), which gives a generic wizard, and SQL Server Native Client 10.0 (sqlncli10.dll 7-10-08), which gives the SQL Server 2008 wizard. I choose the latter. I enter name, description, and have tried both MyPCName and 127.0.0.1 for the server name (browsing turns up nothing). After clicking Next, I leave it at Integrated Windows authentication, and leave Connect to server for additional options checked. After clicking Next, I get the error above. I know it's probably a simple answer, (permission issue?) and I'm a SQL noob, so I appreciate anything that would point me in the right direction. Thanks!

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  • How to create Non Resizable custom server control

    - by wonde
    Hi guys, I am building a custom web panel control for specific purpose.I want the control be fixed with specific width and height so that not to be resized in design mode as well as from property window.How can I do thing. It is very important and urgent.I will appreciate if you can help me.

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  • Flowchart control for ASP.NET

    - by renjucool
    I need to build a flowchart control for Asp.net with html/jquery/silverlight/Scalable Vector Graphics(SVG). The user need to design the flowchart in the web page and need to save it. Please suggest some good implementation.I tried some API's like Gliffy and Grapholite but not suitable for my scenario as this API need live internet connection. Now I'm trying with jsplump. Please help me out, Also please share any free controls for that.

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  • Using RESTful Rails, How to Do an Insert and Create in One Action

    - by Dex
    I have a link on a website that says "add object". When I do this, an AJAX call is made and I want to do the following things: 1) if the container in the session does not exist, create one, else use existing 2) add the object to the container I'm new to RESTful design and am wondering how to best accomplish this in Rails. Step #1 in particular

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  • Having a Backgroundworker refresh splash screen

    - by Jiri
    Hi, Would it be theoretically possible to make BackgroundWorker in a class to periodically refresh existing splash screen form, or is that impossible? (I know that it's probably bad design, but currently I do not see any better way.) Please keep in mind that: I do not want the background worker to do the loading as it would be terribly hard to implement. I can't use the inbuilt splash screen support I'm aware of DoEvents alternative but I do not want to go this path, it would very hard to implement as well, and not reliable.

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  • Load balanced IIS. Should I use NLB, or linux-based reverse proxy, or something else?

    - by growse
    What would be the best approach for load-balancing at least 2-3 Windows 2008 R2 IIS webservers running a multitude of .NET applications? My choices appear to be: 1) Hardware-based network device load balancer, like a Cisco CSS 2) Windows NLB 3) Some sort of linux based proxy, either haproxy or other The three servers sit as VMs on a vSphere farm, so I have the ability to clone to up the instance count in times of high load. I control the switch that the vSphere hosts are plugged into (Cisco 3750), but don't control the switching/routing infrastructure beyond that to the clients. (1) Is too expensive, and probably overkill for my needs. I've included this in case someone figures out a cunning way to do it on my existing network kit, which I doubt. (2) would seem to be the obvious "built-in" option, but seems to be quite fiddly messing around with network interfaces, multicast, and generally other things that seem to be needlessly complex. It's also fairly stupid, in that it can't remove hosts from the pool if they start throwing 500 errors or otherwise go wrong (3) is the most interesting option, as it would appear to offer the most flexibility and customizability, but without having to mess around with the network. However, while I'm familiar with the reverse-proxy capabilities of lighttpd etc, I'm not that well read on other options like HAProxy, which might be able to offer a lot more. Which would you go for, and is there anything I've not thought of?

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  • java ide applet

    - by kelton52
    I'd like to be able to graphically design java web applets like you can do with standard desktop java programs in netbeans...but I can't seem to be able to do that in netbeans. Any ideas on programs, or maybe I'm not doing it right in netbeans. Thanks.

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  • Replicating multicolumn lists from the Django admin CSS

    - by mfalcon
    Hi, I'm developing a Django project and I've to show a multicolumn list for the different objects of a table. I like the design of the django-admin for showing list-objects so I looked at the code to see how it works. As I am a CSS begginer the code seemed a bit difficult and extensive to comprehend. Is there a simplier way to make what I want or actually the CSS code of the django-admin is the path to follow?

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  • making of address book

    - by vimal
    i want to make an address book website in c# in visiual studio and i don't know about it. pls tell me about it that how to make the address book software and what kind of database are used and what requirements. pls tell me about that how i make the tables of database, how design the home page, master page, and other pages. and coding of this and report of this

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