Matt Jackson

I want to be able to replicate this adsutil.vbs behaviour in PowerShell:

cscript adsutil.vbs set W3SVC/$(ProjectWebSiteIdentifier)/MimeMap  
                                                        ".pdf,application/pdf"

and I've gotten as far as getting the website object:

$website  = gwmi -namespace "root\MicrosoftIISv2" -class "IISWebServerSetting" 
                                        -filter "ServerComment like '%$name%'"
if (!($website -eq $NULL)) { 
    #add some mimetype
}

and listing out the MimeMap collection:

([adsi]"IIS://localhost/MimeMap").MimeMap

Anyone know how to fill in the blanks so that I can add mimetypes to an exiting IIS6 website?

Use "+/-" to add/substract days (and fractions of days):

two_hours_ago = DateTime.now - 2/24
twelve_hours_in_future = DateTime.now + 3/24

Use ">>/<<" to add/substract months:

next_month = DateTime.now >> 1
three_months_ago = DateTime.now << 3

Is it newline? prompt? What exactly?

Trying to run powershell over plink and the command executes but plink doesn't recognise its finished and the session hangs. Most curiously though, the command executes successfully when sent through the shell (via Putty). However, when sent via plink, the same command hangs...

Any ideas?

We're evaluating FinalBuilder and are curious as to how it works under the hood. For compiling C# code, does it:

• shell out to MsBuild
• directly call csc.exe
• use the Microsoft.CSharp.CSharpCodeProvider namespace
• some other mechanism?

You can also specify this via the command line:

MsBuild.exe build.file /p:AllowedReferenceRelatedFileExtensions=none

You can also specify this via the command line:

MsBuild.exe build.file /p:AllowedReferenceRelatedFileExtensions=none

You can also specify this via the command line:

MsBuild.exe build.file /p:AllowedReferenceRelatedFileExtensions=none

Ok well after much frustration and research, this is the solution I've come up with...

a) Grab the COM DLL "Interop.IISOle.dll" and put it somewhere easily referenced (eg. reference the COM component "Active DS IIS Namespace Provider" in a dummy project, build and grab the DLL from the bin folder)

b)

function AddMimeType ([string] $websiteId, [string] $extension, 
                                                        [string] $application)
{
    [Reflection.Assembly]::LoadFile("yourpath\Interop.IISOle.dll") | Out-Null;
    $directoryEntry = New-Object System
                      .DirectoryServices
                      .DirectoryEntry("IIS://localhost/W3SVC/$websiteId/root");
    try {
        $mimeMap = $directoryEntry.Properties["MimeMap"]

        $mimeType = New-Object "IISOle.MimeMapClass";
        $mimeType.Extension = $extension
        $mimeType.MimeType = $application

        $mimeMap.Add($mimeType)
        $directoryEntry.CommitChanges()
        } 
    finally {
        if ($directoryEntry -ne $null) {
            if ($directoryEntry.psbase -eq $null) {
                $directoryEntry.Dispose()
            } else {
                $directoryEntry.psbase.Dispose()
            }
        }
    }
}

c) Sample usage:

AddMimeType "123456" ".pdf" "application/pdf"

References: Can I setup an IIS MIME type in .NET?

Ok so I've ordered Applying Domain-Driven Design and Patterns: Using .Net, but while I wait for it to arrive I'm looking at starting to apply the techniques in my current project. I really grasp the concepts quite well now, but when I try to apply them I get caught up with the execution and end up leaking my respsonsibilities across the various projects. As such I'm looking for resources out there that can guide me in the right direction, especially sample projects with actual code that I can work against. I remember a sample site out there in the Alt.Net world that had a real working project that people could browse but can't seem to find it? Does anyone out there have that link, or any other links they could share??

Edit: I have since found this sample application from the DomainDrivenDesign.org site (although it is Java based) as well as the example outlined below.

I am still looking for the Alt.Net sample application if anyone knows where to find it?

Just interested in hearing some experiences with Electric Cloud from people who have been using it at their work environment.

As a long-time user of TeamCity, I'm particularly interested in hearing people compare/contrast with other CI solutions, like TeamCity, Hudson/Jenkins, CruiseControl, Go etc

Ok given a collection of documents like this:

{ 
  "Name": "A",
  "Price": 1.50
}

How do I perform a simple aggregation on the prices in the list? I don't want to perform any grouping, just a simple scalar result.

ie. sum, avg etc

I have tried both of the following without success:

Map only:

for doc in docs
select new { sumPrices = Sum(d => d.Price) }

and

Map:

for doc in docs
select new { price = d.Price }

Reduce:

for result in results
select new { sumPrices = Sum(result) }

Any using nHibernate with a Domain object & DTO object implemented from a common interface? I'm trying to separate all of my nHibernate attributes into the Domain object, leaving my DTO's and interface clean.

The problem comes with nHibernate throwing errors when it tries to associate the interfaces with the concrete classes.

NHibernate.MappingException: Association references unmapped class: IContact

I understand why its complaining about the use of the non-hibernated interface, but I'm struggling to visual a way to restructure around it. A skeleton reproduction of my code is set out as below, any ideas for how to structure my code better?

public interface ICompany
{
    IList<IContact> Contacts { get; set; }
}

public class CompanyDTO : ICompany
{
    private IList<IContact> contacts;
    public IList<IContact> Contacts { get { return this.contacts; } set { this.contacts = value; } }

}

[ActiveRecord]
public class Company : ActiveRecordBase<Company>, ICompany
{
    private IList<IContact> contacts;
    [HasMany(Inverse=true, Table="Contact", ColumnKey="CompanyId")] 
    [ScriptIgnore]
    public IList<IContact> Contacts { get { return this.contacts; } set { this.contacts = value; } }
}

Edit:

I want to have a common interface so that I can ensure they are keeping the same fields (ie. leaning on the compiler to keep them consistent). It also allows me to use the DTO's in the view part of my application, but casts them to domain objects for business and data access. Also, alex's solution does not work because ICompany's Contacts is of type IList, not IList. I would like to keep it as IContact so my DTO object has no knowledge of the Contact Domain object.

Just doing some quick spikes into possibly using a messaging system to process files that are in a nicely decoupled work flow system.

What are the pro's and cons that people have found of using each of the above frameworks? What are the advantages of using these versus a hand-rolled MSMQ system with the WCF bindings and/or non-MSMQ solutions??

I'm looking for a lightweight, easy to setup CI server that I can run on my laptop along with Visual Studio & Resharper. I'm obviously looking at all the big names like CruiseControl, TeamCity etc etc but the biggest consideration to me is ease of setup and to a lesser extent memory footprint.

Edit: I'd also like some suggestions for other solutions outside the big 2/3...

Edit: I'm about to accept an answer if no one else has anything to add?

Given a store which is a collection of JSON documents in the (approximate) form of:

{
PeriodStart: 18/04/2011 17:10:49 
PeriodEnd: 18/04/2011 17:15:54
Count: 12902
Max: 23041 Min: 0
Mean: 102.86 StdDev: 560.97
},
{
PeriodStart: 18/04/2011 17:15:49 
PeriodEnd: 18/04/2011 17:20:54
Count: 10000
Max: 23041 Min: 0
Mean: 102.86 StdDev: 560.97
}... etc

If I want to query the collection for given date range (say all documents from last 24 hours), which would give me the easiest querying operations to do this?

To further elaborate on requirements:

• Its for an application monitoring service, so strict CAP/ACID isn't necessarily required
• Performance isn't a primary consideration either. Read/writes would be at most 10s per second which could be handled by an RDBMS anyway
• Ability to handle changing document schema's would be desirable
• Ease of querying ability of lists/sets is important (ad-hoc queries an advantage)

I've decided to go with Mongo for the time being.

I found that setup/deployment was relatively easy, and the C# wrapper was adequate for what we're trying to do (and in the cases where its not we can resort to javascript queries easily).

I'm trying to create a service that executes scheduled Tasks in an asynchronous (and parallel) way using TPL.

The basic requirement is that for a bunch of different tasks, each with their own scheduled rates (some to be executed every second, others 30 seconds, other 5 mins etc) to be executed concurrently. And I'm not sure of the best way to go about this, especially considering the ConcurrentBag (which I was considering as a holder of all future tasks) contains no methods with which to select collections of tasks that need to be executed.

It also means that I can't use WaitAny or WaitAll, as these short-running tasks need to finish and requeue themselves independently.

How should I proceed with this?

Edit:

Ok basically my design is thus:

A ScheduledTask, which is a wrapper for Task with a Scheduled DateTime property. A bunch of these are stored in a ConcurrentBag

A Controller that polls the ConcurrentBag (currently just a while(true) loop, but could be a Timer or similar), removing any that are scheduled, and Start()'s them.

Each ScheduledTask holds a reference to the ConcurrentBag, and enqueues a new instance of itself when it completes, with a new ScheduledTime.

This design seems to work so far, but there is something about each Task holding a reference to the ConcurrentBag that doesn't sit well with me. Any design comments or suggestions would be appreciated.

A few points:

a) Following the principle of "Tell, don't ask", it is not the AnimalShowTimeService's reposibility to resolve the type. Push the Animal to another object to make the choice.

b) Hardcoding references to ObjectFactory inside your domain is a bad design. The purpose of a DI container is to decouple your objects, not move the coupling somewhere else (StructureMap in this case).

Edit:

With regards to a) don't solve it in a polymorphic manner. You don't need generics to share behaviour, and inheritance hierachies only increase coupling. If you really do need to go down this path, I think implementing your own Convention might be what you're looking for. Or you could name every instance of IAmimal, and resolve the service with ObjectFactory.GetInstance(animal.GetType().ToString()), but that is clearly not ideal.

I think the point is however, that you're doing this as an exercise for DI & DI containers (I think), and if you can't get your design to fit, maybe you need to scrap it and start again, rather than trying to force a square peg into a round hole.

I'm getting the following error when trying to initialise the SMO objects in my application:

Microsoft.SqlServer.Management.Trace.SqlTraceException: Failed to initialize object as reader. ---> System.IO.FileNotFoundException: Could not load file or assembly 'file:///c:\Program Files\Microsoft SQL Server\100\Tools\Binn\pfclnt.dll' or one of its dependencies. The system cannot find the file specified.

This file is indeed missing from that location.

Any ideas why and where I can go about getting it?

I'm running: SqlServer 2005 ManagementStudio 9.00.4035.00 WinServer 2003 SP2

I've created a performance counter that shows a fraction of an incremented value (RawFraction type) over a base value (RawBase).

Unfortunately, when monitoring this value, it only shows the percentage when one of the counters is incremented. At all other times it it is sampled, it shows 0. Is there some way to tell the counter to hold onto the last value until the next time it needs to recalculate the fraction?

I'm looking for ideas on how to find off-site work, preferably short-term and/or part-time. Completely remote access, other side of the world type stuff that I could do from my house for a bit of extra income. Places like rent-a-coder seem a little to low brow, with a lot of the winning bids being ridiculously undervalued (I imagine due to location of the winning tender).

Does anyone know if other sites exist, or have other methods for finding such work?

Edit: I've also found these questions which have lot of good links for freelance websites:

Freelance job sites

Finding Freelance projects

When I visit a particular site on my laptop through my tethered phone's 3G, I keep getting served a certain broken javascript file. However when I do a force refresh on the page (Ctrl+F5) the most recent copy of the file is served up correctly, so clearly the old javascript file is being cached somewhere (probably on my phone providers proxy).

How can I find out where this cached file is being served from, and somehow break the cache to force the most recently copy to to be served?

Edit: What I'm talking about is some kind of tracert on the particular JS file?

You should absolutely consider the low level controllers and scripting engine to be part of your domain model, however you should have these representated via abstractions (ie. with interfaces) so that you can properly test the rest of your domain.

I would also recommend against doing much more upfront design, and instead let your design evolve via TDD, otherwise you run the risk of trying to shoehorn an implementation in just to fit your UML diagrams...

I have a username textbox on a form, that has a few validation rules applied to it via the DataAnnotation attributes:

[Required(ErrorMessage = "FTP login is required")]
[StringLength(15, ErrorMessage = "Must be 15 characters or fewer")]
[RegularExpression(@"[a-zA-Z0-9]*", ErrorMessage = "Alpha-numeric characters only")]
public string FtpLogin { get; set; }

I also have a button next to this text box, that fires off a jQuery ajax request that checks for the existence of the username as follows:

<button onclick="check(this);return false;" id="FtpLoginCheck" name="FtpLoginCheck">Available?</button>

I'm looking for a way of tieing the two together, so that the client-side validation is performed before the call to the "check(this)" in the onclick event.

Edit: To be more clear, I need a way to inspect or trigger the client-side validation result of the textbox, when I click the unrelated button beside it.

Edit: I now have the button JS checking for $("form").validate().invalid, but not displaying the usual validation messages. Almost there

Any ideas?

Any idea how we can assert a mock object was called when it is being accessed inside Parallel.ForEach via a closure? I assume that because each invocation is on a different thread that Rhino Mocks loses track of the object?

Pseudocode:

var someStub = MockRepository.GenerateStub()

Parallel.Foreach(collectionOfInts, anInt => someStub.DoSomething(anInt))

someStub.AssertWasCalled(s => s.DoSomething, Repeat.Five.Times)

This test will return an expectation violation, expecting the stub to be called 5 times but being actually called 0 times.

Any ideas how we can tell the lambdas to keep track of the thread-local stub object?

Ok, well I'm still not quite sure what the problem is, but I've found a workaround via the TeamCity forums.

Basically you want to echo some abitrary string and pipe that output into your powershell executable, like thus:

echo 'executing powershell...' | C:\windows\system32\windowspowershell \v1.0\powershell.exe  exit 1

So then your full plink command becomes:

plink.exe user@someIp -i key.ppk -P 22 -batch -v "echo 'executing powershell...' | C:\windows\system32\windowspowershell\v1.0\powershell.exe exit 1"

Nb. Plink will still pass through return codes and console output using this method.

Link to TeamCity forum:

http://youtrack.jetbrains.net/issue/TW-6021

Hope this helps

Any idea how I can tell AutoMapper to resolve a TypeConverter constructor argument using StructureMap?

ie. We have this:

    private class StringIdToContentProviderConverter : TypeConverter<string, ContentProvider> {
        private readonly IContentProviderRepository _repository;

        public StringIdToContentProviderConverter(IContentProviderRepository repository) {
            _repository = repository;
        }

        public StringIdToContentProviderConverter() {
            _repository = ObjectFactory.GetInstance<IContentProviderRepository>();
        }

        protected override ContentProvider ConvertCore(string contentProviderId) {
            return _repository.Get(new Guid(contentProviderId));
        }
    }

And in the AutoMap registration:

        Mapper.CreateMap<Guid, ContentProvider>().ConvertUsing<GuidToContentProviderConverter>();

However, I don't like the idea of hardwiring an ObjectFactory.GetInstance in my constructor for the converter. Any ideas how I can tell AutoMapper how to resolve my IContentProviderRepository?

Or ideas to other approaches for using Automapper to hydrate domain objects from viewmodel ID's using a repository?