DevForce Community Forum : How to call the following Remote Server methds http://www.ideablade.com/forum/ This is an XML content feed of; DevForce Community Forum : DevForce 2010 : How to call the following Remote Server methds Wed, 22 May 2013 03:37:45 -700 Wed, 19 Jan 2011 16:22:37 -700 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 9.69 360 www.ideablade.com/forum/RSS_post_feed.asp?TID=2445 DevForce Community Forum http://www.ideablade.com/forum/forum_images/IdeaBlade_logo_tm.png http://www.ideablade.com/forum/ How to call the following Remote Server methds : Thank you so much. I finally have... http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9719#9719 Author: BillG
Subject: 2445
Posted: 19-Jan-2011 at 4:22pm

Thank you so much. I finally have it running. I did get an error about it taking to long to run. Should I use the push feature to get around this?
 
Bill
 
]]> Wed, 19 Jan 2011 16:22:37 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9719#9719 How to call the following Remote Server methds : Bill, The example in the documentation... http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9716#9716 Author: sbelini
Subject: 2445
Posted: 19-Jan-2011 at 12:14pm

Bill,
 
The example in the documentation is correct.
 
You asked "what is entityManager initialized to"
- For server-side code accepting an EntityManager we create a server-specific EM just for that particular use. In the case of RPC methods it's a bit different in that the type will usually be the type of the calling EM on the client.
 
By the way, in an earlier post, you showed the following line of code:
 
private static LaborWareEntities _manager = LaborWareEntities.DefaultManager;
 
Avoid using static EntityManagers in server-side code. The server code must be able to support multi-threading, and using a static EM means you're opening yourself up to unforeseen multi-threading errors later on. These threading problems usually don't show up in development and early testing, but they show up when you go into production.
 
You mentioned "Here is your remote server method, it looks like even though you are calling it asychronously your GetQuery is a synchronous call"
- Regardless of being called SYNCHRONOUSLY or ASYNCHRONOUSLY in the Client, the Server Method will be executed SYNCHRONOUSLY in the Server.
 
You asked "is null, null the principal and the entitymanager"
- InvokeServerMethodAsync has 3 overloads. The one shown in your post is:
InvokeServerMethodAsync(String,String,Action<InvokeServerMethodOperation>,Object,Object[])
 
Here's a quote from our API documentation:
======================================================================
Asynchronously invokes the specified static (Shared in Visual Basic) method for execution on the server.
Syntax
C#  
public InvokeServerMethodOperation InvokeServerMethodAsync(
   string fullTypeName,
   string methodName,
   Action<InvokeServerMethodOperation> userCallback,
   object userState,
   params object[] userArguments
)
 
Parameters
fullTypeName
Assembly-qualified type name such as 'MyNamespace.Services, MyAssembly'
methodName
Name of method to be invoked
userCallback
Callback called when the operation completes
userState
Token identifying the asynchronous request
userArguments
Arguments to be passed to method
======================================================================
 
You can reference DevForce API Documentation at http://drc.ideablade.com/ApiDocumentation/webframe.html
and also in your machine (installed with DevForce) at Start>Programs>DevForce2010>Documentation>API Documentation.
 
I am also attaching a simple Silverlight App invoking a Server Method based on the example in the DevForce Resource Center.
You can download the sample here.
 
Silvio.
]]> Wed, 19 Jan 2011 12:14:46 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9716#9716 How to call the following Remote Server methds : Is the documentation correct?... http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9713#9713 Author: BillG
Subject: 2445
Posted: 19-Jan-2011 at 10:36am

Is the documentation correct?  Here is your remote server method, it looks like even though you are calling it asychronously your GetQuery is a synchronous call. what is entityManager initialized to?
 
[AllowRpc]
public static int GetNumberOfOrders(IPrincipal principal, EntityManager entityManager,
  params Object[] args) {

 // Gather args
 DateTime startDate = (DateTime) args[0];
  DateTime endDate = (DateTime) args[1];

 return entityManager.GetQuery<OrderSummary>()
    .Where(os => os.OrderDate > startDate && os.OrderDate < endDate)
    .Count();
}
Here is the calling method
 
public void GetOrderCount(DateTime startDate, DateTime endDate) {
 string typeName = "DomainModel.OrderSummary, DomainModel";
 string methodName = "GetNumberOfOrders";

  var op = _em1.InvokeServerMethodAsync(typeName, methodName, null, null, startDate, endDate);  is null, null the principal and the entitymanager
  op.Completed += (o, args) => {
   int myResult = (int)args.Result;
  };
}
]]> Wed, 19 Jan 2011 10:36:52 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9713#9713 How to call the following Remote Server methds : public static string CalculateAmountOwing(IPrincipal... http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9712#9712 Author: BillG
Subject: 2445
Posted: 19-Jan-2011 at 10:15am

public static string CalculateAmountOwing(IPrincipal principal, EntityManager manager, params Object[] args)

{

Member m = args[0] as Member;

Paid = new ObservableCollection<DuesPaid>();

Owed = new ObservableCollection<DuesOwed>();

var query1 = from DuesPaid in manager.DuesPaids               doesn't like manager

orderby DuesPaid.BatchDate descending

where DuesPaid.SocSecNo == m.SocSecNo

select DuesPaid;

var results1 = query1.Execute<DuesPaid>();

results1.ForEach(Paid.Add);

]]> Wed, 19 Jan 2011 10:15:46 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9712#9712 How to call the following Remote Server methds : Bill, 1. The Server Method... http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9709#9709 Author: sbelini
Subject: 2445
Posted: 19-Jan-2011 at 9:34am

Bill,
 
1. The Server Method will run synchronously in the server, but the call to the server method is asynchronous because you are using InvokeServerMethodAsync.
i.e.
If you invoke the server method asynchronously (InvokeServerMethodAsync), the code in the client keeps going. Once the Server Method completes, the results are accessible in the callback.
If you invoke the server method synchronously (InvokeServerMethod), the code in the client halts until the Server Method completes. (pretty much like calling a method in the client itself) Then the code in the client continues.
 
Assuming you are not running a Silverlight app, you could invoke the method synchronously by using InvokeServerMethod.
 
2. I'm not sure I understand why it's not compiling. What line of code is causing the error? What is the error message?
]]> Wed, 19 Jan 2011 09:34:45 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9709#9709 How to call the following Remote Server methds : Two issues I am still having. I... http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9708#9708 Author: BillG
Subject: 2445
Posted: 19-Jan-2011 at 8:35am

Two issues I am still having.
 
I thought that the server methods that ran on the server could run synchronous methods. Do the executes and calls in my server methods have to be asychronous? This is what I am trying to do inside of CalculateAmountOwing()
 

1. var query1 = from DuesPaid in _manager.DuesPaids

orderby DuesPaid.BatchDate descending

where DuesPaid.SocSecNo == m.SocSecNo

select DuesPaid;

var results1 = query1.Execute<DuesPaid>();

results1.ForEach(Paid.Add);

2. It will not compile my CalculateAmountOwing if I use the manager object being passed in. example I tried to do the following
 
var query1 = from DuesPaid in manager.DuesPaids and it gave a compile error. Right now in my class I have the following

private static LaborWareEntities _manager = LaborWareEntities.DefaultManager;

 
and I am using _manager to access all properties and it works fine.
 
]]> Wed, 19 Jan 2011 08:35:47 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9708#9708 How to call the following Remote Server methds : Bill, You&#039;d declare your... http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9704#9704 Author: sbelini
Subject: 2445
Posted: 18-Jan-2011 at 9:42pm

Bill,
 
You'd declare your server method as:
 
[AllowRpc]
public static string CalculateAmountOwing(IPrincipal principal, EntityManager entityManager, params Object[] args){
  Member member = args[0] as Member;
  ...
}
 
and in your application you'd call it as follows:
 
string typeName = "LaborWare2011.RemoteCalls.MemberBalanceCalculator, LaborWare2011Web";
string methodName = "CalculateAmountOwing";
var op = Mgr.InvokeServerMethodAsync(typeName, methodName, null, null, CurrentMember);
 
Are you defining your server method and invoking the method as stated above?
If yes, where exactly is the exception being thrown?
 
Have you checked the documentation about Remote Server Method Calls in our DevForce Resource Center?
We'd appreciate some feedback on how we could make this information clearer.
 
Silvio.
]]> Tue, 18 Jan 2011 21:42:24 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9704#9704 How to call the following Remote Server methds : I think that I know what the problem... http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9703#9703 Author: BillG
Subject: 2445
Posted: 18-Jan-2011 at 9:10pm

I think that I know what the problem is now.
 
What do I want for the second parameter for the CalculateAmountOwing method
 
EntityManager mgr
or
LaborWareEntities mgr
 
I tried using the EntityManager mgr and I get an error 'the type initializer for LaborWare2011.RemoteCalls.MemberBalanceCalculator threw an exception. System.TypeInitializationException: The type 'initializer for MemberBalanceCalculator threw an exeption. IdeaBlade.Core.IdeaBladeException: Type conflict: the defaultmanager is currently of type EntityManager.
 
when I use my domain specfic manager it can't find the method because the signature is wrong.
 
]]> Tue, 18 Jan 2011 21:10:13 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9703#9703 How to call the following Remote Server methds : Ok now I got further. I get the... http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9702#9702 Author: BillG
Subject: 2445
Posted: 18-Jan-2011 at 8:59pm

Ok now I got further. I get the follwing error message
 
unable to locate public method: MemberBalanceCalculator.CalculateAmountOwing
]]> Tue, 18 Jan 2011 20:59:50 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9702#9702 How to call the following Remote Server methds : The error means that your assembly-qualified... http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9701#9701 Author: sbelini
Subject: 2445
Posted: 18-Jan-2011 at 8:44pm

The error means that your assembly-qualified type name is incorrect.
 
As stated in our DevForce Resource Center, the full type name format is "MyNamespace.MyType, MyAssembly".
 
So yours will most likely be
 
LaborWare2011.RemoteCalls.MemberBalanceCalculator, LaborWare2011Web
]]> Tue, 18 Jan 2011 20:44:06 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9701#9701 How to call the following Remote Server methds : I place a breakpoint inside of... http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9700#9700 Author: BillG
Subject: 2445
Posted: 18-Jan-2011 at 8:34pm

I place  a breakpoint inside of the server method and it never gets called.
]]> Tue, 18 Jan 2011 20:34:58 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9700#9700 How to call the following Remote Server methds : I get an unhandled exceptions... http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9699#9699 Author: BillG
Subject: 2445
Posted: 18-Jan-2011 at 8:25pm

I get an unhandled exceptions code 4004 Category: ManagedRuntimeError
Message:EntityServerException: Could not load type
'LaborWare2011Web.RemoteCalls.MemberBalanceCalculator' from assembly 'LaborWare2011Web.
 
]]> Tue, 18 Jan 2011 20:25:11 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9699#9699 How to call the following Remote Server methds : Bill, You are invoking the... http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9697#9697 Author: sbelini
Subject: 2445
Posted: 18-Jan-2011 at 8:14pm

Bill,
 
You are invoking the method asynchronously and once it's completed it will invoke the callback (if any).
 
Are you saying that it is not getting to the callback at all?
 
Are you getting any exceptions?
 
Did you try stepping into the server method?
]]> Tue, 18 Jan 2011 20:14:31 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9697#9697 How to call the following Remote Server methds : Ok so I made the following change... http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9695#9695 Author: BillG
Subject: 2445
Posted: 18-Jan-2011 at 7:43pm

Ok so I made the following change according to the documentation
 

public void CalculateBalance()

{

string typeName = "LaborWare2011Web.RemoteCalls.MemberBalanceCalculator, LaborWare2011Web";

string methodName = "CalculateAmountOwing";

var op = Mgr.InvokeServerMethodAsync(typeName, methodName, null, null, CurrentMember);

op.Completed += (o, args) => {

};

}

 

[AllowRpc]

public static void CalculateAmountOwing(IPrincipal principal, EntityManager mgr, params Object[] args)

{

when I step through the code the call to InvokeServerMethodAsync does not call the server method, it just advances past the code.
]]> Tue, 18 Jan 2011 19:43:23 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9695#9695 How to call the following Remote Server methds : Ok I changed the signature to... http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9693#9693 Author: BillG
Subject: 2445
Posted: 18-Jan-2011 at 7:14pm

Ok  I changed the signature to the following
 

[AllowRpc]

public static void CalculateAmountOwing(IPrincipal principal, EntityManager manager, Member m)

{

so how do I call this method now. Is this correct?

public void CalculateBalance()

{

string typeName = "LaborWare2011Web.RemoteCalls.MemberBalanceCalculator, LaborWare2011Web";

string methodName = "CalculateAmountOwing";

var op = Mgr.InvokeServerMethodAsync(typeName, methodName, Mgr, CurrentMember);

op.Completed += (o, args) => {

};

}

 

]]> Tue, 18 Jan 2011 19:14:32 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9693#9693 How to call the following Remote Server methds : Hi Bill Like previously stated... http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9679#9679 Author: sbelini
Subject: 2445
Posted: 18-Jan-2011 at 1:05pm

Hi Bill
 
Like previously stated at
http://www.ideablade.com/forum/forum_posts.asp?TID=2407&KW=&PID=9505&title=what-am-i-missing-in-this-remoteservermethod-call#9505
The method called must correspond to the ServerMethodDelegate signature:
 
public delegate object ServerMethodDelegate(
   IPrincipal principal,
   EntityManager serverEntityManager,
   params object[] args
)
 
So your methods' signatures should look like:
 
public static double GetMemberDuesRate(
  IPrincipal principal,
  EntityManager server,
  Member member, DateTime startDate, DateTime endDate
)
 
and
 
public static void CalculateBalanceOwing(
  IPrincipal principal,
  EntityManager server,
  Member member
)
 
Make sure your parameters are serializable.
If for some reason you can't modify your methods to comply with the signature above, I suggest that you create compliant methods and call your methods within them.
 
You can find valuable information about invoking server methods in our DevForce Resource Center and in the DevForce API documentation as well.
 
Silvio.
]]> Tue, 18 Jan 2011 13:05:43 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9679#9679 How to call the following Remote Server methds : I am having trouble figuring out... http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9667#9667 Author: BillG
Subject: 2445
Posted: 16-Jan-2011 at 6:13pm

I am having trouble figuring out how to call the following Remote Server Methods.
 
1. public static double GetMemberDuesRate(Member member, DateTime startDate, DateTime endDate) It is located in a folder called RemoteCalls in the LaborWare2011Web project.
 
2. public static void CalculateBalanceOwing(Member member) it is also located in a folder called RemoteCalls in the LaborWare2011Web project.
 
 
Bill
 
 
]]> Sun, 16 Jan 2011 18:13:30 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2445&PID=9667#9667