I have an application where I am adding a new row in table using EntityFramewok. I wrote a test case which will check the functioning of this addrow method. I am getting count of rows before and after adding the row to DB.
But I am getting an exception when testmethod is trying to access the EF DB.
The specified named connection is either not found in the
configuration, not intended to be used with the EntityClient provider,
or not valid.
The error is occuring because you have a connection string in Web.Config file of your main project, but your TestProject doesnot know which DB to be referred to.
Solution:
Copy the connection string from Web.config of main project (looking similar to the one given below) and paste it into
<connectionStrings> *** </connectionStrings>
of App.config file of TestProject.
<add name="MoviesEntities" connectionString="metadata=res://*/Models.Movies.csdl|res://*/Models.Movies.ssdl|res://*/Models.Movies.msl;provider=System.Data.SqlClient;provider connection string="Data Source=.\SQLEXPRESS;Initial Catalog=Movies;Integrated Security=True;MultipleActiveResultSets=True"" providerName="System.Data.EntityClient" />
Related
I am using custom configuration for my RabbitMQ connectivity. I'm connecting to multiple hosts.
<context:property-placeholder location="classpath:/test_setting.properties" ignore-unresolvable="true"/>
...
<rabbit:connection-factory id="testConnectionFactory"
addresses="${test.addresses}"
username="${test.username}"
password="${test.password}"
virtual-host="${test.virtualhost}"
connection-factory="rhb" />
<bean id="rhb" class="com.rabbitmq.client.ConnectionFactory">
<property name="requestedHeartbeat" value="${test.connection.heartbeat}" />
</bean>
My property file looks like: test_setting.properties
test.queue=testQueue
test.virtualhost=/global_api
test.addresses=host1:5672,
host2:5672
test.username=guest
test.password=guest
test.connection.heartbeat=60
test.consumer.concurrency=1
When i trigger my main class properties not getting replaced inside applicationcontext.xml in Spring. Thereby I am getting connection refused exception.
Please note if I hard code the connection details everything works fine.
ignore-unresolvable="true"
It looks like the file is not being found - change that to false to see the error.
Also, turning on DEBUG logging for org.springframework will provide a great deal of information about property resolution.
test.addresses=host1:5672,
host2:5672
Properties have to be on one line (you can terminate a line with \) for continuation.
test.addresses=host1:5672, \
host2:5672
as per suggestion for by #CreativeManix I started investigating petaPeco
Retrieving large number of rows (more than 10 mil) in asp.net mvc application
After adding exact system.data.oracleclient + putting web.config in the bin where mvc is getting compiled in .dll I got following error:
Error 3
Running transformation: System.IndexOutOfRangeException: Index was outside the bounds of the array.
at System.Array.InternalGetReference(Void* elemRef, Int32 rank, Int32* pIndices)
at System.Array.GetValue(Int32 index)
at Microsoft.VisualStudio.TextTemplating5F4490FB7AE018243DBB4DF6250E7211.GeneratedTextTransformation.GetCurrentProject()
at Microsoft.VisualStudio.TextTemplating5F4490FB7AE018243DBB4DF6250E7211.GeneratedTextTransformation.GetConnectionString(String& connectionStringName, String& providerName)
at Microsoft.VisualStudio.TextTemplating5F4490FB7AE018243DBB4DF6250E7211.GeneratedTextTransformation.InitConnectionString()
at Microsoft.VisualStudio.TextTemplating5F4490FB7AE018243DBB4DF6250E7211.GeneratedTextTransformation.LoadTables()
at Microsoft.VisualStudio.TextTemplating5F4490FB7AE018243DBB4DF6250E7211.GeneratedTextTransformation.TransformText()
at Microsoft.VisualStudio.TextTemplating.TransformationRunner.RunTransformation(TemplateProcessingSession session, String source, ITextTemplatingEngineHost host, String& result)
This error shows up when i run the transformation after installation of petaPoco.
One thing I do know the error is coming from "GetCurrentProject" - and probably - "(Array)dte.ActiveSolutionProjects"
I think something is wrong in the way petaPoco is set up with my project! somehow it can't find the activesolution project. I am not too sure how to fix it.
I investigated this.
In my question section I asked few questions:
I was not sure about how to fire transformation/or process of generating Database.CS. So initially I was installing petapoco from the command prompt- I
To do that you just click "Run Custom Tool" by right clicking on the "Database.tt". If your connection string is correct + you are referencing correct Oracle/SQL server data provider + that provider is available in GAC + (if it is oracle and you have the password for the default schema user of the database you are trying to access)- then that should generate the Database.cs
To enable Oracle data client to read the schema out of oracle database I needed to take out following entry:
cmd.GetType().GetProperty("BindByName").SetValue(cmd, true, null);
And everything worked.
Connection string can look like:
connectionString="Data Source=PXWREG;Persist Security Info=True;User ID=XWREG_ACDS_T;password=isacdst"
I've been using SignalR since an early version and upgraded along the way however I have deployed my application to my Windows Server 2008 R2 production server and now the app crashes out with the " Hub could not be resolved." exception.
edit: StackTrace Added:
[InvalidOperationException: 'stockitems' Hub could not be resolved.]
Microsoft.AspNet.SignalR.Hubs.HubManagerExtensions.EnsureHub(IHubManager hubManager, String hubName, IPerformanceCounter[] counters) +426
Microsoft.AspNet.SignalR.Hubs.HubDispatcher.Initialize(IDependencyResolver resolver, HostContext context) +716
Microsoft.AspNet.SignalR.Owin.CallHandler.Invoke(IDictionary`2 environment) +1075
Microsoft.AspNet.SignalR.Owin.Handlers.HubDispatcherHandler.Invoke(IDictionary`2 environment) +363
Microsoft.Owin.Host.SystemWeb.OwinCallContext.Execute() +68
Microsoft.Owin.Host.SystemWeb.OwinHttpHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object extraData) +414
[TargetInvocationException: Exception has been thrown by the target of an invocation.]
Microsoft.Owin.Host.SystemWeb.CallContextAsyncResult.End(IAsyncResult result) +146
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +606
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +288
On my dev machine and local test server I am getting no issues.
The hub in question is really simple:
[HubName("StockItems")]
public class StockItemHub : Hub
{
}
Originally I thought it was an issue with the HubName so removed it but it still bombs out.
Originally I thought it was due to dependency injection so I then changed my Global.asax to look as follows:
var signalRResolver = new SignalRDependencyResolver();
GlobalHost.DependencyResolver = signalRResolver;
var configuration = new HubConfiguration { Resolver = signalRResolver };
RouteTable.Routes.MapHubs(configuration);
AreaRegistration.RegisterAllAreas();
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters, config.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
edit: what is SignalRDependencyResolver?
SignalRDependencyResolver didn't exist until I tried to solve this issue. As I believe its a dependency injection issue I wrapped DefaultDependencyResolver overrode GetService and GetServices to first check my Ninject kernel for the type and if not fall back to the DefaultDependencyResolver
Any ideas?
The server is running IIS7, Windows Server 2008 with .Net 4.5
The application is an MVC 4 .Net 4.5
I had this same error due to my Hub class being internal, therefore SignalR couldn't find it within my assembly.
Setting the hub to public solved the issue.
I suffer from this problem just now, and I dig in a little deeper, and have just found out a possible solution.
My hub class are not in assembly of the web project, they are in some referenced assemblies. This is a very common scenario in a multi-layer application.
When starting up, signalR will try to find hub class by an IAssemblyLocator instance. When deployed within an IIS site, this IAssemblyLocator instance find through all referenced assemblies. But at this point of time, the application is just during the startup, which means many (referenced but not loaded yet) assemblies may had NOT been gathered by owin host environment.
So the lookup for hub classes fails.
So, just add your assembly into system.web/compilation/assemblies section of Web.Config:
<system.web>
<compilation targetFramework="4.5">
<assemblies>
<add assembly="HubAssembly, Version=1.0.0.0, Culture=neutral"/>
</assemblies>
</compilation>
</system.web>
Or if you like, you can also solved this problem by implementing a custom IAssemblyLocator class, register it into the dependency resolver as soon as app.MapSignalR is invoked.
using Microsoft.AspNet.SignalR.Hubs;
public class AssemblyLocator : IAssemblyLocator {
public IList<System.Reflection.Assembly> GetAssemblies()
{
// list your hubclass assemblies here
return new List<System.Reflection.Assembly>(new []{typeof(HubAssembly.HubClass).Assembly});
}
}
// add following code to OwinStartup class's Configuration method
app.MapSignalR();
GlobalHost.DependencyResolver.Register(typeof(Microsoft.AspNet.SignalR.Hubs.IAssemblyLocator), () => new AssemblyLocator());
This is now an old question but it reared its ugly head again this weekend. After spending alot of time investigating I have found that SignalR wasn't the only thing broken in the deployment, my WebAPI was also throwing could not find controller exceptions.
Turns out this is caused by the internals of SignalR and WebApi reflecting over all the types in the Sites assembly. A TypeLoadException was being thrown , in my case due to having a class derive RoleEntryPoint which is an Azure type but as the site was being deployed in a non Azure Environment things fell apart. Simply excluding this type from non Azure builds resolved the issue.
It would be nice if these TypeLoadExceptions were more visible but there it is.
Similar to #Jijie Chen, when I hit this issue I found that it was not able to load my assembly containing my hub. The fix for me was more straightforward though. In my case I had three projects. All the logic, including the hub was in a project of its own and I had two projects intended to host using owin. One was a console project that was working fine. I then adapted that to a windows service to host it. Well, somehow I managed to forget to include a reference to the project containing my hub. This still compiled fine because the host code relies on the signalr/owin mapping functions which load the hub(s) at runtime not compile time. So when I would start up the service and try to connect I got the hub no defined error described here because it couldn't find the assembly with my hub.
I have already seen threads discussing the use of Entity Framework and PostgreSQL with official instructions. Those instructions need to run gacutil for every install which is not so handy for deployment purposes.
What I want to do here is passing PostgreSQL connection directly to the DbContext constructor. This is enough for me because I am going to use CodeFirst without designer. This is what I do:
public class Context : DbContext
{
Context(System.Data.Common.DbConnection connection)
: base(connection, true)
{
}
public static Context CreateContext()
{
NpgsqlConnection conn = new NpgsqlConnection("Server=127.0.0.1;Port=5432;User Id=postgres;Password=********;Database=xxx;");
conn.Open();
return new Context(conn);
}
}
But using this method I get a NotSupportedException with message:
Unable to determine the provider name for connection of type
'Npgsql.NpgsqlConnection'.
What should I do?
You'll need to register the Npgsql provider in the app/web.config. See section 3.4 Using Npgsql with ProviderFactory of the Npgsql manual.
When you install an ADO.NET provider for databases (MySQL, PostgreSQL, etc.) the installers will usually register the provider assembly in the GAC and add an entry to the machine.config. If you want to deploy without having to install the provider you'll need to include a copy of the provider assembly (set Npgsql assembly reference as Copy Local for your project) and add an entry to your application's app/web.config as follows:
<configuration>
...
<system.data>
<DbProviderFactories>
<clear />
<add name="Npgsql Data Provider" invariant="Npgsql" support="FF" description=".Net Framework Data Provider for Postgresql Server" type="Npgsql.NpgsqlFactory, Npgsql, Version=2.0.1.0, Culture=neutral, PublicKeyToken=5d8b90d52f46fda7" />
</DbProviderFactories>
</system.data>
...
</configuraiton>
Make sure the version matches exactly the version of the Npgsql assembly you deploy with (or just omit the Version/Culture/PublicKeyToken). The <Clear /> is there to avoid conflicts if running on a machine that already has entry for Npgsql in its machine.config. Without the clear you would get an exception. However, that's also assuming you're not relying on any other providers specified in the machine.config for your application.
I am getting this error while loggin into eventviewer. I am looging the exception in event viewer as well as rolling flat file. If i remove the eventviewer section then rolling flat file works perfectly, but only when i add this it gives the exception
{"Resolution of the dependency failed, type =
\"Microsoft.Practices.EnterpriseLibrary.Logging.LogWriter\", name =
\"(none)\".\r\nException occurred while: while resolving.\r\nException
is: InvalidOperationException - The type TraceListener cannot be
constructed. You must configure the container to supply this
value.\r\n-----------------------------------------------\r\nAt the
time of the exception, the container was:\r\n\r\n Resolving
Microsoft.Practices.EnterpriseLibrary.Logging.LogWriterImpl,LogWriter.default
(mapped from Microsoft.Practices.EnterpriseLibrary.Logging.LogWriter,
(none))\r\n Resolving parameter \"structureHolder\" of constructor
Microsoft.Practices.EnterpriseLibrary.Logging.LogWriterImpl(Microsoft.Practices.EnterpriseLibrary.Logging.LogWriterStructureHolder
structureHolder,
Microsoft.Practices.EnterpriseLibrary.Logging.Instrumentation.ILoggingInstrumentationProvider
instrumentationProvider,
Microsoft.Practices.EnterpriseLibrary.Logging.ILoggingUpdateCoordinator
updateCoordinator)\r\n Resolving
Microsoft.Practices.EnterpriseLibrary.Logging.LogWriterStructureHolder,LogWriterStructureHolder.default
(mapped from
Microsoft.Practices.EnterpriseLibrary.Logging.LogWriterStructureHolder,
(none))\r\n Resolving parameter \"traceSources\" of constructor
Microsoft.Practices.EnterpriseLibrary.Logging.LogWriterStructureHolder(System.Collections.Generic.IEnumerable1[[Microsoft.Practices.EnterpriseLibrary.Logging.Filters.ILogFilter,
Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0,
Culture=neutral, PublicKeyToken=31bf3856ad364e35]] filters,
System.Collections.Generic.IEnumerable1[[System.String, mscorlib,
Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]
traceSourceNames,
System.Collections.Generic.IEnumerable1[[Microsoft.Practices.EnterpriseLibrary.Logging.LogSource,
Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0,
Culture=neutral, PublicKeyToken=31bf3856ad364e35]] traceSources,
Microsoft.Practices.EnterpriseLibrary.Logging.LogSource
allEventsTraceSource,
Microsoft.Practices.EnterpriseLibrary.Logging.LogSource
notProcessedTraceSource,
Microsoft.Practices.EnterpriseLibrary.Logging.LogSource
errorsTraceSource, System.String defaultCategory, System.Boolean
tracingEnabled, System.Boolean logWarningsWhenNoCategoriesMatch,
System.Boolean revertImpersonation)\r\n Resolving
Microsoft.Practices.EnterpriseLibrary.Logging.LogSource,General\r\n
Resolving parameter \"traceListeners\" of constructor
Microsoft.Practices.EnterpriseLibrary.Logging.LogSource(System.String
name,
System.Collections.Generic.IEnumerable1[[System.Diagnostics.TraceListener,
System, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b77a5c561934e089]] traceListeners,
System.Diagnostics.SourceLevels level, System.Boolean autoFlush,
Microsoft.Practices.EnterpriseLibrary.Logging.Instrumentation.ILoggingInstrumentationProvider
instrumentationProvider)\r\n Resolving
System.Diagnostics.TraceListener,Event Log Trace Listener\r\n"}
I had the same problem and it was due to an error in my configuration file. I referenced trace listeners from my categorySources section which did not exist in my listeners section. I removed the categories and the mappings (i did not use them anyway) and then it worked. I guess you can validate your configuration file in the configuration console and then it will tell you what the problem is.
1 - Make sure you are referencing the correct DLLs
Microsoft.Practices.EnterpriseLibrary.Logging
Microsoft.Practices.EnterpriseLibrary.Common
2 - Make sure your configuration file is in the right location (in the same project or in a references project)
3 - Make sure your configuration file is correct. Editing it with the Enterprise Library Configuration Tool, nothing should be in red. Try expanding all trace listeners, categories, etc. The most common error is that one of the Special Categories is pointing to a non existing Listener.
I had a similar experience with ExceptionHanlder., I switched over to using Unity container directly after playing around with intro material re: logging.
I basically just copied the examples from the Help files and briefly wondered why it wasn't working and errored on Type Resolution; Could not resolve.
The answer was simple enough. I had only "played" with logging prior to switching to Unity container but the examples I was using/copying were using both Logging and Exception Handling injection.
Since I hadn't "played: with Exception Handling in 5.0, there were no entries for this in the configuration file, hence the reason why Unity could not resolve.
Solution: take 5 seconds to add the ExceptionHandling block into the config file using the tools and I was good to go and keep on "playing".
Unity needs the entries for each resolved block in the config file even if they are not Named / customised. This is rediculously obvious but easily overlloked if you are hacking away with example code for learning purposes.
I got this error because a database listener was set with a connection string that didn't exist.
To help diagnose, comment out the listener lines and then add them again one by one.
I got this error when moving the app to another server, and in my case, it was the initializeData field, which sets the path for the log file, was not valid, and it was not able to create the log file at startup.
When i edited and put a valid path for the log to be created, it worked ok.
Hope it helps someone.