Greetings,
I'm trying to create a workflow using a ActivityBuilder, and then get the XAML.
This flow use a custom activity (WaitForInput) to handle bookmarks. This class inherits from NativeActivity.
I'm having a hard time finding a way to set 'Result' property of my WaitForInput activity, which expects a OutArgument.
Creating this same workflow by the VS designer, I could associate the boolean property 'MyResult' InOutArgument called 'wrapper'. Like this : [Wrapper.MyResult]
I would do this by code, and according to my research, I have to use DynamicActivityProperty.
The problem is that I don't know how to use my DynamicActivityProperty as OutArgument in this case.
This is an simplified version of the code:
var wrapper = new DynamicActivityProperty
{
Name = "Wrapper",
Type = typeof(InOutArgument<CommunicationWrapper>),
};
var activityBuilder = new ActivityBuilder();
activityBuilder.Properties.Add(wrapper);
var step1 = new FlowStep
{
//here's my problem
Action = new WaitForInput<bool> { BookmarkName = "step1", Result = ??? }
};
var flow = new Flowchart
{
StartNode = step1,
Nodes = { step1 }
};
I have founded a solution to my own problem
Result = new OutArgument<bool>(new VisualBasicReference<bool>
{ ExpressionText = "Wrapper.MyResult" }); }
Related
I have an object with several really large string properties. In addition, it has a simple timestamp property.
What I trying to achieve is to update only timestamp property without getting the whole huge object to the server.
Eventually, I would like to use EF and to do in the most performant way something equivalent to this:
update [...]
set [...] = [...]
where [...]
Using the following, you can update a single column:
var yourEntity = new YourEntity() { Id = id, DateProp = dateTime };
using (var db = new MyEfContextName())
{
db.YourEntities.Attach(yourEntity);
db.Entry(yourEntity).Property(x => x.DateProp).IsModified = true;
db.SaveChanges();
}
OK, I managed to handle this. The solution is the same as proposed by Seany84, with the only addition of disabling validation, in order to overcome issue with required fields. Basically, I had to add the following line just before 'SaveChanges():
db.Configuration.ValidateOnSaveEnabled = false;
So, the complete solution is:
var yourEntity = new YourEntity() { Id = id, DateProp = dateTime };
using (var db = new MyEfContextName())
{
db.YourEntities.Attach(yourEntity);
db.Entry(yourEntity).Property(x => x.DateProp).IsModified = true;
db.Configuration.ValidateOnSaveEnabled = false;
db.SaveChanges();
}
Most of the times all I have to do with JavaScript is just add some dynamics to simple HTML. Recently, however, after discovering CoffeeScript, I got interested in *Object Oriented JavaScript". Here is some code in CoffeeScript.
class MyClass
constructor: (title, purpose)->
#title = typeof title is undefined ? "My Class" : title
#purpose = typeof purpose is undefined ? "None" : purpose
#myMethod()
myMethod: ->
_getTitle = #getTitle
_getPurpose = #getPurpose
$(window).click ->
_getTitle()
_getPurpose()
return
return
getTitle: ->
_title = #title
window.console.log "Title of the class this object belongs to is: #{_title}"
return
getPurpose: ->
_purpose = #purpose
window.console.log "Purpose of creating this class is: #{_purpose}"
return
title = ""
purpose = ""
myObject = new MyClass("Testbed", "to test Object Oriented JavaScript")
For those who prefer JavaScript, here is the compiled (?) JavaScript.
var MyClass, myObject;
MyClass = (function() {
var purpose, title;
function MyClass(title, purpose) {
var _ref, _ref1;
this.title = (_ref = typeof title === void 0) != null ? _ref : {
"My Class": title
};
this.purpose = (_ref1 = typeof purpose === void 0) != null ? _ref1 : {
"None": purpose
};
this.myMethod();
}
MyClass.prototype.myMethod = function() {
var _getPurpose, _getTitle;
_getTitle = this.getTitle;
_getPurpose = this.getPurpose;
$(window).click(function() {
_getTitle();
_getPurpose();
});
};
MyClass.prototype.getTitle = function() {
var _title;
_title = this.title;
window.console.log("Title of the class this object belongs to is: " + _title);
};
MyClass.prototype.getPurpose = function() {
var _purpose;
_purpose = this.purpose;
window.console.log("Purpose of creating this class is: " + _purpose);
};
title = "";
purpose = "";
return MyClass;
})();
myObject = new MyClass("Testbed", "to test Object Oriented JavaScript");
Sorry about the long code. I had to try to keep it interesting. The thing is, this code outputs:
Title of the class this object belongs to is: undefined
Purpose of creating this class is: undefined
whereas I was expecting it to output:
Title of the class this object belongs to is: Testbed
Purpose of creating this class is: to test Object Oriented JavaScript
And I could've sworn this was how it worked when I last tinkered with it (around six months ago). I learnt that in a method that is part of the prototype of an object, this refers to the prototype itself. And this.something would actually point to object.something. Whereas in this example, inside myObject.myMethod(), this behaves as it should and this.getTitle() refers to myObject.getTitle(). Inside myObject.getTitle(), however, this refers to window. Why?
Is it because getTitle() was called inside a $(window).click() handler? But why would that change the context? getTitle() is still a property of myObject.
Also, you see what I am trying to accomplish here. How could I accomplish that?
There are several problems.
1) You never return anything from .getPurpose or .getTitle
2) You should create a reference to this in myMethod. i.e. var me = this and then inside the event listener call me.getTitle() and me.getPurpose(). This is needed because inside the event listener (window onclick), this refers to the window and not the object.
3) It looks like your ternary expressions are always evaluating to false. You need to rethink them.
P.S. I looked at the straight JS version
SO follow this example
example and how make a fake DBContex For test my test using just this work fine
[Test]
public void CiudadIndex()
{
var ciudades = new FakeDbSet<Ciudad>
{
new Ciudad {CiudadId = 1, EmpresaId =1, Descripcion ="Santa Cruz", FechaProceso = DateTime.Now, MarcaBaja = null, UsuarioId = 1},
new Ciudad {CiudadId = 2, EmpresaId =1, Descripcion ="La Paz", FechaProceso = DateTime.Now, MarcaBaja = null, UsuarioId = 1},
new Ciudad {CiudadId = 3, EmpresaId =1, Descripcion ="Cochabamba", FechaProceso = DateTime.Now, MarcaBaja = null, UsuarioId = 1}
};
//// Create mock unit of work
var mockData = new Mock<IContext>();
mockData.Setup(m => m.Ciudades).Returns(ciudades);
// Setup controller
var homeController = new CiudadController(mockData.Object);
// Invoke
var viewResult = homeController.Index();
var ciudades_de_la_vista = (IEnumerable<Ciudad>)viewResult.Model;
// Assert..
}
Iam tryign now to use Autofixture-Moq
to create "ciudades" but I cant. I try this
var fixture = new Fixture();
var ciudades = fixture.Build<FakeDbSet<Ciudad>>().CreateMany<FakeDbSet<Ciudad>>();
var mockData = new Mock<IContext>();
mockData.Setup(m => m.Ciudades).Returns(ciudades);
I get this error
Cant convert System.Collections.Generic.IEnumerable(FakeDbSet(Ciudad)) to System.Data.Entity.IDbSet(Ciudad)
cant put "<>" so I replace with "()" in the error message
Implementation of IContext and FakeDbSet
public interface IContext
{
IDbSet<Ciudad> Ciudades { get; }
}
public class FakeDbSet<T> : IDbSet<T> where T : class
how can make this to work?
A minor point... In stuff like:
var ciudades_fixture = fixture.Build<Ciudad>().CreateMany<Ciudad>();
The second type arg is unnecessary and should be:
var ciudades_fixture = fixture.Build<Ciudad>().CreateMany();
I really understand why you need a FakeDbSet and the article is a bit TL;DR... In general, I try to avoid faking and mucking with ORM bits and instead dealing with interfaces returning POCOs to the max degree possible.
That aside... The reason the normal syntax for initialising the list works is that there is an Add (and IEnumerable) in DBFixture. AutoFixture doesn't have a story for that pattern directly (after all it is compiler syntactic sugar and not particularly amenable to reflection or in line with any other conventions) but you can use AddManyTo as long as there is an ICollection in play. Luckily, within the impl of FakeDbSet as in the article, the following gives us an in:-
public ObservableCollection<T> Local
{
get { return _data; }
}
As ObservableCollection<T> derives from ICollection<T>, you should be able to:
var ciudades = new FakeDbSet<Cuidad>();
fixture.AddManyTo(ciudades.Local);
var mockData = new Mock<IContext>();
mockData.Setup(m => m.Ciudades).Returns(ciudades);
It's possible to wire up a customization to make this prettier, but at least you have a way to manage it. The other option is to have something implement ICollection (or add a prop with a setter taking IEnumerable<T> and have AF generate the parent object, causing said collection to be filled in.
Long superseded side note: In your initial question, you effectively have:
fixture.Build<FakeDbSet<Ciudad>>().CreateMany()
The problem becomes clearer then - you are asking AF to generate Many FakeDbSet<Ciudad>s, which is not what you want.
I haven't used AutoFixture in a while, but shouldn't it be:
var ciudades = new FakeDbSet<Ciudad>();
fixture.AddManyTo(ciudades);
for the moment I end doing this, I will keep reading about how use automoq, cause I'm new in this
var fixture = new Fixture();
var ciudades_fixture = fixture.Build<Ciudad>().CreateMany<Ciudad>();
var ciudades = new FakeDbSet<Ciudad>();
foreach (var item in ciudades_fixture)
{
ciudades.Add(item);
}
var mockData = new Mock<IContext>();
fixture.Create<Mock<IContext>>();
mockData.Setup(r => r.Ciudades).Returns(ciudades);
I need to programmatically define a serializable flowchart Windows Workflow that accepts input arguments and returns a result. I understand how to create these workflows using a designer, but I need to do it in code and have the flowchart workflow be serializable (so no lambda expressions).
I'm having trouble getting the "To" field of the Assign. The code below creates a flowchart workflow of a WriteLine followed by an Assign.
var ab = new ActivityBuilder<string> {
Name = "ActivityBuilt",
Implementation = new Flowchart {
StartNode = new FlowStep {
Action = new WriteLine { Text = new VisualBasicValue<string>("greeting") },
Next = new FlowStep {
Action = new Assign {
DisplayName = "Set result",
To = new OutArgument<string>(new VisualBasicReference<string> {
ExpressionText = "results"}),
Value = new VisualBasicValue<string>("bye")
}
}
}
}
};
ab.Properties.Add(new DynamicActivityProperty {
Name = "greeting",
Type = typeof (InArgument<string>),
Value = "hello"});
ab.Properties.Add(new DynamicActivityProperty {
Name = "results",
Type = typeof (OutArgument<string>),
Value = "bye"});
// Convert the ActivityBuilder to a callable activity
using (var sw = new StringWriter()) {
using (var xw = ActivityXamlServices.CreateBuilderWriter(new XamlXmlWriter(sw, new XamlSchemaContext()))) {
XamlServices.Save(xw, LastCreated);
}
using (var sr = new StringReader(sw.ToString())) {
var wf = ActivityXamlServices.Load(sr);
return wf;
}
}
The above code fails when I try to convert from ActivityBuilder to Activity saying "Failed to create a 'OutArgument' from the text 'bye'." This works fine if I don't use the OutArgument and just pass things in.
My question is what to put in the To property? How do I reference the OutArgument I add to the ActivityBuilder.Properties? A VisualBasicReference isn't an OutArgument. Am I making this more difficult than it needs to be?
Thanks for any hints!
Edit: I want to create a workflow programmatically. The workflow needs to have input arguments and return results (output arguments).
I understand how to create the workflow and how to declare and use input arguments. I'm using an ActivityBuilder to create the workflow and to set the InArgument via the ActivityBuilder's properties. I create the workflow from the ActivityBuilder by serializing to XAML and then deserializing using ActivityXamlServices.Load.
What I don't understand is how to get a result from the workflow. I assume it involves an OutArgument. How/where do I add an OutArgument to the workflow? I thought the code snippet I gave would assign a value to an OutArgument, but the call to ActivityXamlServices.Load fails with a complaint that it is unable to create the OutArgument.
Is the approach of using ActivityBuilder correct?
Is the "To" field of the Assign action properly referencing an OutArgument?
How do I make the ActivityBuilder aware of the OutArgument and still be able to convert to an Activity / workflow?
Hope this clarifies my problem.
There are atleast 3 problems with the code:
The Value of the Assign needs to be an InArgument().
The value you are trying to read from is named "greeting" not "bye".
The OutArgument named "results" can't have a default value.
Try the following code:
var ab = new ActivityBuilder<string>
{
Name = "ActivityBuilt",
Implementation = new Flowchart
{
StartNode = new FlowStep
{
Action = new WriteLine { Text = new VisualBasicValue<string>("greeting") },
Next = new FlowStep
{
Action = new Assign
{
DisplayName = "Set result",
To = new OutArgument<string>(new VisualBasicReference<string>
{
ExpressionText = "results"
}),
Value = new InArgument<string>(new VisualBasicValue<string>("greeting"))
}
}
}
}
};
ab.Properties.Add(new DynamicActivityProperty
{
Name = "greeting",
Type = typeof(InArgument<string>),
Value = "hello"
});
ab.Properties.Add(new DynamicActivityProperty
{
Name = "results",
Type = typeof(OutArgument<string>)
});
// Convert the ActivityBuilder to a callable activity
using (var sw = new StringWriter())
{
using (var xw = ActivityXamlServices.CreateBuilderWriter(new XamlXmlWriter(sw, new XamlSchemaContext())))
{
XamlServices.Save(xw, ab);
}
using (var sr = new StringReader(sw.ToString()))
{
var wf = ActivityXamlServices.Load(sr);
WorkflowInvoker.Invoke(wf);
}
}
I have this function:
public static string RenderViewToString(string controlName, object viewData) {
ViewDataDictionary vd = new ViewDataDictionary(viewData);
ViewPage vp = new ViewPage { ViewData = vd };
Control control = vp.LoadControl(controlName);
vp.Controls.Add(control);
StringBuilder sb = new StringBuilder();
using (StringWriter sw = new StringWriter(sb))
{
using (HtmlTextWriter tw = new HtmlTextWriter(sw))
{
vp.RenderControl(tw);
}
}
return sb.ToString();
}
And I call it like this:
string body = StringHelpers.RenderViewToString("~/Areas/Public/Views/Shared/RegistrationEmail.ascx", new RegistrationEmailViewModel { User = user });
And it returns a html-table with the user-info.
But I was wondering if there is a way to edit this to I can can return a View as string? so I can add masterpage, so it'll be easier to design all potential mails going out?
Thanks in advance
/M
Check out MVCContrib's email template system for sending emails.
http://codevanced.net/post/Sending-HTML-emails-with-ASPNET-MVC2-and-MVCContrib.aspx
Update:
This question and/or this article might help if you don't want to include Mvccontrib. Although I use Mvccontrib every day, it's harmless.