Class LazyManyObjectsResolverBase<TResolver, TResolved>

The base class for all lazy many-objects resolvers.

Inheritance

System.​Object

Resolver​Base

Resolver​Base<TResolver>

Many​Objects​Resolver​Base<TResolver, TResolved>

Namespace:System.Dynamic.ExpandoObject

Assembly:Umbraco.Core.dll

Syntax

public abstract class LazyManyObjectsResolverBase<TResolver, TResolved> : ManyObjectsResolverBase<TResolver, TResolved> where TResolver : ResolverBase where TResolved : class

Type Parameters

Name	Description
TResolver	The type of the concrete resolver class.
TResolved	The type of the resolved objects.

Remarks

This is a special case resolver for when types get lazily resolved in order to resolve the actual types. This is useful for when there is some processing overhead (i.e. Type finding in assemblies) to return the Types used to instantiate the instances. In some these cases we don't want to have to type-find during application startup, only when we need to resolve the instances.

Important notes about this resolver: it does not support Insert or Remove and therefore does not support any ordering unless the types are marked with the WeightAttribute.

Constructors

LazyManyObjectsResolverBase(IEnumerable<Lazy<Type>>, ObjectLifetimeScope)

Declaration

[Obsolete("Use ctor specifying IServiceProvider instead")]
protected LazyManyObjectsResolverBase(IEnumerable<Lazy<Type>> lazyTypeList, ObjectLifetimeScope scope = ObjectLifetimeScope.Application)

Parameters

Type	Name	Description
System.​Collections.​Generic.​IEnumerable<System.​Lazy<System.​Type>>	lazyTypeList
Object​Lifetime​Scope	scope

LazyManyObjectsResolverBase(Func<IEnumerable<Type>>, ObjectLifetimeScope)

Declaration

[Obsolete("Use ctor specifying IServiceProvider instead")]
protected LazyManyObjectsResolverBase(Func<IEnumerable<Type>> typeListProducerList, ObjectLifetimeScope scope = ObjectLifetimeScope.Application)

Parameters

Type	Name	Description
System.​Func<System.​Collections.​Generic.​IEnumerable<System.​Type>>	typeListProducerList
Object​Lifetime​Scope	scope

LazyManyObjectsResolverBase(IServiceProvider, ILogger, IEnumerable<Lazy<Type>>, ObjectLifetimeScope)

Declaration

protected LazyManyObjectsResolverBase(IServiceProvider serviceProvider, ILogger logger, IEnumerable<Lazy<Type>> lazyTypeList, ObjectLifetimeScope scope = ObjectLifetimeScope.Application)

Parameters

Type	Name	Description
System.​IService​Provider	serviceProvider
ILogger	logger
System.​Collections.​Generic.​IEnumerable<System.​Lazy<System.​Type>>	lazyTypeList
Object​Lifetime​Scope	scope

LazyManyObjectsResolverBase(IServiceProvider, ILogger, IEnumerable<Type>, ObjectLifetimeScope)

Initializes a new instance of the Many​Objects​Resolver​Base<TResolver, TResolved> class with an initial list of object types, and an optional lifetime scope.

Declaration

protected LazyManyObjectsResolverBase(IServiceProvider serviceProvider, ILogger logger, IEnumerable<Type> value, ObjectLifetimeScope scope = ObjectLifetimeScope.Application)

Parameters

Type	Name	Description
System.​IService​Provider	serviceProvider
ILogger	logger
System.​Collections.​Generic.​IEnumerable<System.​Type>	value	The list of object types.
Object​Lifetime​Scope	scope	The lifetime scope of instantiated objects, default is per Application.

Remarks

If scope is per HttpRequest then there must be a current HttpContext.

Exceptions

Type	Condition
System.​Invalid​Operation​Exception	scope is per HttpRequest but the current HttpContext is null.

LazyManyObjectsResolverBase(IServiceProvider, ILogger, Func<IEnumerable<Type>>, ObjectLifetimeScope)

Declaration

protected LazyManyObjectsResolverBase(IServiceProvider serviceProvider, ILogger logger, Func<IEnumerable<Type>> typeListProducerList, ObjectLifetimeScope scope = ObjectLifetimeScope.Application)

Parameters

Type	Name	Description
System.​IService​Provider	serviceProvider
ILogger	logger
System.​Func<System.​Collections.​Generic.​IEnumerable<System.​Type>>	typeListProducerList
Object​Lifetime​Scope	scope

LazyManyObjectsResolverBase(IServiceProvider, ILogger, HttpContextBase)

Initializes a new instance of the Many​Objects​Resolver​Base<TResolver, TResolved> class with an empty list of objects, with creation of objects based on an HttpRequest lifetime scope.

Declaration

protected LazyManyObjectsResolverBase(IServiceProvider serviceProvider, ILogger logger, HttpContextBase httpContext)

Parameters

Type	Name	Description
System.​IService​Provider	serviceProvider
ILogger	logger
System.​Web.​Http​Context​Base	httpContext	The HttpContextBase corresponding to the HttpRequest.

Exceptions

Type	Condition
System.​Argument​Null​Exception	httpContext is null.

LazyManyObjectsResolverBase(IServiceProvider, ILogger, HttpContextBase, IEnumerable<Lazy<Type>>)

Declaration

protected LazyManyObjectsResolverBase(IServiceProvider serviceProvider, ILogger logger, HttpContextBase httpContext, IEnumerable<Lazy<Type>> lazyTypeList)

Parameters

Type	Name	Description
System.​IService​Provider	serviceProvider
ILogger	logger
System.​Web.​Http​Context​Base	httpContext
System.​Collections.​Generic.​IEnumerable<System.​Lazy<System.​Type>>	lazyTypeList

LazyManyObjectsResolverBase(IServiceProvider, ILogger, HttpContextBase, Func<IEnumerable<Type>>)

Declaration

protected LazyManyObjectsResolverBase(IServiceProvider serviceProvider, ILogger logger, HttpContextBase httpContext, Func<IEnumerable<Type>> typeListProducerList)

Parameters

Type	Name	Description
System.​IService​Provider	serviceProvider
ILogger	logger
System.​Web.​Http​Context​Base	httpContext
System.​Func<System.​Collections.​Generic.​IEnumerable<System.​Type>>	typeListProducerList

LazyManyObjectsResolverBase(IServiceProvider, ILogger, ObjectLifetimeScope)

Initializes a new instance of the Many​Objects​Resolver​Base<TResolver, TResolved> class with an empty list of objects, and an optional lifetime scope.

Declaration

protected LazyManyObjectsResolverBase(IServiceProvider serviceProvider, ILogger logger, ObjectLifetimeScope scope = ObjectLifetimeScope.Application)

Parameters

Type	Name	Description
System.​IService​Provider	serviceProvider
ILogger	logger
Object​Lifetime​Scope	scope	The lifetime scope of instantiated objects, default is per Application.

Remarks

If scope is per HttpRequest then there must be a current HttpContext.

Exceptions

Type	Condition
System.​Invalid​Operation​Exception	scope is per HttpRequest but the current HttpContext is null.

LazyManyObjectsResolverBase(HttpContextBase)

Declaration

[Obsolete("Use ctor specifying IServiceProvider instead")]
protected LazyManyObjectsResolverBase(HttpContextBase httpContext)

Parameters

Type	Name	Description
System.​Web.​Http​Context​Base	httpContext

LazyManyObjectsResolverBase(HttpContextBase, IEnumerable<Lazy<Type>>)

Declaration

[Obsolete("Use ctor specifying IServiceProvider instead")]
protected LazyManyObjectsResolverBase(HttpContextBase httpContext, IEnumerable<Lazy<Type>> lazyTypeList)

Parameters

Type	Name	Description
System.​Web.​Http​Context​Base	httpContext
System.​Collections.​Generic.​IEnumerable<System.​Lazy<System.​Type>>	lazyTypeList

LazyManyObjectsResolverBase(HttpContextBase, Func<IEnumerable<Type>>)

Declaration

[Obsolete("Use ctor specifying IServiceProvider instead")]
protected LazyManyObjectsResolverBase(HttpContextBase httpContext, Func<IEnumerable<Type>> typeListProducerList)

Parameters

Type	Name	Description
System.​Web.​Http​Context​Base	httpContext
System.​Func<System.​Collections.​Generic.​IEnumerable<System.​Type>>	typeListProducerList

LazyManyObjectsResolverBase(ObjectLifetimeScope)

Declaration

[Obsolete("Use ctor specifying IServiceProvider instead")]
protected LazyManyObjectsResolverBase(ObjectLifetimeScope scope = ObjectLifetimeScope.Application)

Parameters

Type	Name	Description
Object​Lifetime​Scope	scope

Properties

HasResolvedTypes

Gets a value indicating whether the resolver has resolved types to create instances from.

Declaration

public bool HasResolvedTypes { get; }

Property Value

Type	Description
System.​Boolean

Remarks

To be used in unit tests.

InstanceTypes

Gets the list of types to create instances from.

Declaration

protected override IEnumerable<Type> InstanceTypes { get; }

Property Value

Type	Description
System.​Collections.​Generic.​IEnumerable<System.​Type>

Remarks

When called, will get the types from the lazy list.

SupportsInsert

Gets a false value indicating that the resolver does NOT support inserting types.

Declaration

protected override bool SupportsInsert { get; }

Property Value

Type	Description
System.​Boolean

Methods

AddType(Lazy<Type>)

Lazily adds a type from a lazy type.

Declaration

public void AddType(Lazy<Type> value)

Parameters

Type	Name	Description
System.​Lazy<System.​Type>	value	The lazy type, to add.

AddType(Type)

Lazily adds a type from an actual type.

Declaration

public override void AddType(Type value)

Parameters

Type	Name	Description
System.​Type	value	The actual type, to add.

Remarks

The type is converted to a lazy type.

AddTypeListDelegate(Func<IEnumerable<Type>>)

Lazily adds types from a function producing types.

Declaration

public void AddTypeListDelegate(Func<IEnumerable<Type>> typeListProducer)

Parameters

Type	Name	Description
System.​Func<System.​Collections.​Generic.​IEnumerable<System.​Type>>	typeListProducer	The functions producing types, to add.

AddTypes(IEnumerable<Lazy<Type>>)

Lazily adds types from lazy types.

Declaration

protected void AddTypes(IEnumerable<Lazy<Type>> types)

Parameters

Type	Name	Description
System.​Collections.​Generic.​IEnumerable<System.​Lazy<System.​Type>>	types	The lazy types, to add.

Clear()

Clears all lazy types

Declaration

public override void Clear()

RemoveType(Type)

Removes types from the list of types, once it has been lazily evaluated, and before actual objects are instanciated.

Declaration

public override void RemoveType(Type value)

Parameters

Type	Name	Description
System.​Type	value	The type to remove.