How To: Manage singletons of similar type in Prism with DI/IoC












0















Apologies in advance… I’m new to DI/IoC, Prism and it’s been a long 12 hour day!



The project I’m working on must support communications for TcpIp, Bluetooth LE, and (Serial if available). Each connection type will implement IConnection (see below), and a type specific interface (i.e. IBluetoothConnection, ITcpIpConnection, and ISerialConnection) to encapsulate the respective connection parameters. (Baud Rate, Parity, Flow Control, IP Address, Port #, etc…)



public interface IConnection
{
bool Connected { get; }
bool Connect();
bool Disconnect();
bool Tx(string message);
string Rx();
}

public interface IBluetoothLeConnection : IConnection
{
int BaudRate { get; set; }
int Parity { get; set; }
int FlowControl { get; set; }
}

public interface ITcpIpConnection : IConnection
{
string IP { get; set; }
int Port { get; set; }
}

public interface ISerialConnection : IConnection
{
string CommPort { get; set; }
int BaudRate { get; set; }
int Parity { get; set; }
int FlowControl { get; set; }
}


I plan to register all three as singletons.



containerRegistry.RegisterSingleton<IBluetoothConnection, BluetoothLeConnection>();
containerRegistry.RegisterSingleton<ITcpIpConnection, TcpIpConnection>();
containerRegistry.RegisterSingleton<ISeialConnection, SerialConnection>();


Define IConnection Connection in ViewMainBase, and then point it to the chosen concrete connection at runtime.



Questions



Will this work?



Is there a better way (best practice) or (DI/IoC magic) to accomplishing this?



Should I create a ConnectionManager class, and inject all three IConnection types into the constructor and let it manage the active connection?










share|improve this question

























  • Why are IBluetoothLeConnection, ITcpIpConnection, and ISeialConnection interfaces? How are they polymorphic? Will there be more than one implementation of each of them?

    – Mark Seemann
    Nov 19 '18 at 20:13











  • Hey @MarkSeemann they are polymorphic as each interface implements IConnection I'll probably implement an abstract base class for IConnetion and subclass the other three from it.

    – Sean
    Dec 4 '18 at 18:55











  • IConnection is already polymorphic. Why do you need further polymorphism?

    – Mark Seemann
    Dec 4 '18 at 19:11
















0















Apologies in advance… I’m new to DI/IoC, Prism and it’s been a long 12 hour day!



The project I’m working on must support communications for TcpIp, Bluetooth LE, and (Serial if available). Each connection type will implement IConnection (see below), and a type specific interface (i.e. IBluetoothConnection, ITcpIpConnection, and ISerialConnection) to encapsulate the respective connection parameters. (Baud Rate, Parity, Flow Control, IP Address, Port #, etc…)



public interface IConnection
{
bool Connected { get; }
bool Connect();
bool Disconnect();
bool Tx(string message);
string Rx();
}

public interface IBluetoothLeConnection : IConnection
{
int BaudRate { get; set; }
int Parity { get; set; }
int FlowControl { get; set; }
}

public interface ITcpIpConnection : IConnection
{
string IP { get; set; }
int Port { get; set; }
}

public interface ISerialConnection : IConnection
{
string CommPort { get; set; }
int BaudRate { get; set; }
int Parity { get; set; }
int FlowControl { get; set; }
}


I plan to register all three as singletons.



containerRegistry.RegisterSingleton<IBluetoothConnection, BluetoothLeConnection>();
containerRegistry.RegisterSingleton<ITcpIpConnection, TcpIpConnection>();
containerRegistry.RegisterSingleton<ISeialConnection, SerialConnection>();


Define IConnection Connection in ViewMainBase, and then point it to the chosen concrete connection at runtime.



Questions



Will this work?



Is there a better way (best practice) or (DI/IoC magic) to accomplishing this?



Should I create a ConnectionManager class, and inject all three IConnection types into the constructor and let it manage the active connection?










share|improve this question

























  • Why are IBluetoothLeConnection, ITcpIpConnection, and ISeialConnection interfaces? How are they polymorphic? Will there be more than one implementation of each of them?

    – Mark Seemann
    Nov 19 '18 at 20:13











  • Hey @MarkSeemann they are polymorphic as each interface implements IConnection I'll probably implement an abstract base class for IConnetion and subclass the other three from it.

    – Sean
    Dec 4 '18 at 18:55











  • IConnection is already polymorphic. Why do you need further polymorphism?

    – Mark Seemann
    Dec 4 '18 at 19:11














0












0








0








Apologies in advance… I’m new to DI/IoC, Prism and it’s been a long 12 hour day!



The project I’m working on must support communications for TcpIp, Bluetooth LE, and (Serial if available). Each connection type will implement IConnection (see below), and a type specific interface (i.e. IBluetoothConnection, ITcpIpConnection, and ISerialConnection) to encapsulate the respective connection parameters. (Baud Rate, Parity, Flow Control, IP Address, Port #, etc…)



public interface IConnection
{
bool Connected { get; }
bool Connect();
bool Disconnect();
bool Tx(string message);
string Rx();
}

public interface IBluetoothLeConnection : IConnection
{
int BaudRate { get; set; }
int Parity { get; set; }
int FlowControl { get; set; }
}

public interface ITcpIpConnection : IConnection
{
string IP { get; set; }
int Port { get; set; }
}

public interface ISerialConnection : IConnection
{
string CommPort { get; set; }
int BaudRate { get; set; }
int Parity { get; set; }
int FlowControl { get; set; }
}


I plan to register all three as singletons.



containerRegistry.RegisterSingleton<IBluetoothConnection, BluetoothLeConnection>();
containerRegistry.RegisterSingleton<ITcpIpConnection, TcpIpConnection>();
containerRegistry.RegisterSingleton<ISeialConnection, SerialConnection>();


Define IConnection Connection in ViewMainBase, and then point it to the chosen concrete connection at runtime.



Questions



Will this work?



Is there a better way (best practice) or (DI/IoC magic) to accomplishing this?



Should I create a ConnectionManager class, and inject all three IConnection types into the constructor and let it manage the active connection?










share|improve this question
















Apologies in advance… I’m new to DI/IoC, Prism and it’s been a long 12 hour day!



The project I’m working on must support communications for TcpIp, Bluetooth LE, and (Serial if available). Each connection type will implement IConnection (see below), and a type specific interface (i.e. IBluetoothConnection, ITcpIpConnection, and ISerialConnection) to encapsulate the respective connection parameters. (Baud Rate, Parity, Flow Control, IP Address, Port #, etc…)



public interface IConnection
{
bool Connected { get; }
bool Connect();
bool Disconnect();
bool Tx(string message);
string Rx();
}

public interface IBluetoothLeConnection : IConnection
{
int BaudRate { get; set; }
int Parity { get; set; }
int FlowControl { get; set; }
}

public interface ITcpIpConnection : IConnection
{
string IP { get; set; }
int Port { get; set; }
}

public interface ISerialConnection : IConnection
{
string CommPort { get; set; }
int BaudRate { get; set; }
int Parity { get; set; }
int FlowControl { get; set; }
}


I plan to register all three as singletons.



containerRegistry.RegisterSingleton<IBluetoothConnection, BluetoothLeConnection>();
containerRegistry.RegisterSingleton<ITcpIpConnection, TcpIpConnection>();
containerRegistry.RegisterSingleton<ISeialConnection, SerialConnection>();


Define IConnection Connection in ViewMainBase, and then point it to the chosen concrete connection at runtime.



Questions



Will this work?



Is there a better way (best practice) or (DI/IoC magic) to accomplishing this?



Should I create a ConnectionManager class, and inject all three IConnection types into the constructor and let it manage the active connection?







xamarin dependency-injection xamarin.forms inversion-of-control prism






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share|improve this question













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share|improve this question








edited Nov 13 '18 at 12:43







Sean

















asked Nov 12 '18 at 23:03









SeanSean

354




354













  • Why are IBluetoothLeConnection, ITcpIpConnection, and ISeialConnection interfaces? How are they polymorphic? Will there be more than one implementation of each of them?

    – Mark Seemann
    Nov 19 '18 at 20:13











  • Hey @MarkSeemann they are polymorphic as each interface implements IConnection I'll probably implement an abstract base class for IConnetion and subclass the other three from it.

    – Sean
    Dec 4 '18 at 18:55











  • IConnection is already polymorphic. Why do you need further polymorphism?

    – Mark Seemann
    Dec 4 '18 at 19:11



















  • Why are IBluetoothLeConnection, ITcpIpConnection, and ISeialConnection interfaces? How are they polymorphic? Will there be more than one implementation of each of them?

    – Mark Seemann
    Nov 19 '18 at 20:13











  • Hey @MarkSeemann they are polymorphic as each interface implements IConnection I'll probably implement an abstract base class for IConnetion and subclass the other three from it.

    – Sean
    Dec 4 '18 at 18:55











  • IConnection is already polymorphic. Why do you need further polymorphism?

    – Mark Seemann
    Dec 4 '18 at 19:11

















Why are IBluetoothLeConnection, ITcpIpConnection, and ISeialConnection interfaces? How are they polymorphic? Will there be more than one implementation of each of them?

– Mark Seemann
Nov 19 '18 at 20:13





Why are IBluetoothLeConnection, ITcpIpConnection, and ISeialConnection interfaces? How are they polymorphic? Will there be more than one implementation of each of them?

– Mark Seemann
Nov 19 '18 at 20:13













Hey @MarkSeemann they are polymorphic as each interface implements IConnection I'll probably implement an abstract base class for IConnetion and subclass the other three from it.

– Sean
Dec 4 '18 at 18:55





Hey @MarkSeemann they are polymorphic as each interface implements IConnection I'll probably implement an abstract base class for IConnetion and subclass the other three from it.

– Sean
Dec 4 '18 at 18:55













IConnection is already polymorphic. Why do you need further polymorphism?

– Mark Seemann
Dec 4 '18 at 19:11





IConnection is already polymorphic. Why do you need further polymorphism?

– Mark Seemann
Dec 4 '18 at 19:11












1 Answer
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0















Will this work?




Yes.




Is there a better way (best practice) or (DI/IoC magic) to accomplishing this?




I'd refactor the ref parameter from Rx into something else because it's not easily mockable when you're writing your tests using a framework like Moq.




Should I create a ConnectionManager class, and inject all three IConnection types into the constructor and let it manage the active connection?




Yes.






share|improve this answer























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    1 Answer
    1






    active

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    0















    Will this work?




    Yes.




    Is there a better way (best practice) or (DI/IoC magic) to accomplishing this?




    I'd refactor the ref parameter from Rx into something else because it's not easily mockable when you're writing your tests using a framework like Moq.




    Should I create a ConnectionManager class, and inject all three IConnection types into the constructor and let it manage the active connection?




    Yes.






    share|improve this answer




























      0















      Will this work?




      Yes.




      Is there a better way (best practice) or (DI/IoC magic) to accomplishing this?




      I'd refactor the ref parameter from Rx into something else because it's not easily mockable when you're writing your tests using a framework like Moq.




      Should I create a ConnectionManager class, and inject all three IConnection types into the constructor and let it manage the active connection?




      Yes.






      share|improve this answer


























        0












        0








        0








        Will this work?




        Yes.




        Is there a better way (best practice) or (DI/IoC magic) to accomplishing this?




        I'd refactor the ref parameter from Rx into something else because it's not easily mockable when you're writing your tests using a framework like Moq.




        Should I create a ConnectionManager class, and inject all three IConnection types into the constructor and let it manage the active connection?




        Yes.






        share|improve this answer














        Will this work?




        Yes.




        Is there a better way (best practice) or (DI/IoC magic) to accomplishing this?




        I'd refactor the ref parameter from Rx into something else because it's not easily mockable when you're writing your tests using a framework like Moq.




        Should I create a ConnectionManager class, and inject all three IConnection types into the constructor and let it manage the active connection?




        Yes.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 13 '18 at 6:28









        HaukingerHaukinger

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