dependency_injection_build 1.0.0.7

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.NET Core 2.1 Dependency Injection framework

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v1.0.0.7

• Enable/disable automatic type resolution
• Enable/disable automatic type instantiation

Examples

Automatic type resolution disabled

Parameter is set to true if automatic type resolution for reference types option enabled (does not throws exceptions for reference types contains type dependencies to non-registered types). If automatic type resolution for reference types is enabled, type will defaults to null if not resolved and no exception will be thrown.

Usage:

// Automatic type resolution disabled
// Instantiation reqires SqlDataRepository to be resolved
var container = new Container(false, true);
container.RegisterType<ServiceDataRepository>();
container.RegisterType<WebServiceDataRepository>();
Assert.Throws<TypeInstantiationException>(() => container.CreateInstance("Build.Tests.TestSet15.WebServiceDataRepository(Build.Tests.TestSet15.SqlDataRepository)"));

/// Automatic type resolution enabled
var container = new Container(true, false);
container.RegisterType<WebServiceDataRepository>();
var sql = (WebServiceDataRepository)container.CreateInstance("Build.Tests.TestSet15.WebServiceDataRepository(Build.Tests.TestSet15.SqlDataRepository)");
Assert.Equal(2019, ((SqlDataRepository)sql.Repository).PersonId);

Definition:

public class ServiceDataRepository : IPersonRepository
{
    public ServiceDataRepository([Injection(typeof(SqlDataRepository), 2018)]IPersonRepository repository)
    {
        Repository = repository;
    }

    public IPersonRepository Repository { get; }

    public Person GetPerson(int personId)
    {
        // get the data from Web service and return Person instance.
        return new Person(this);
    }
}

public class WebServiceDataRepository : IPersonRepository
{
    public WebServiceDataRepository([Injection(typeof(SqlDataRepository), 2019)]IPersonRepository repository)
    {
        Repository = repository;
    }

    public IPersonRepository Repository { get; }

    public Person GetPerson(int personId)
    {
        // get the data from Web service and return Person instance.
        return new Person(this);
    }
}