/// <summary>
/// Instantiates the service type using the given delegate.
/// </summary>
/// <param name="request">The <see cref="IFactoryRequest"/> that describes the service that needs to be created.</param>
/// <returns>The service instance.</returns>
public object CreateInstance(IFactoryRequest request)
{
object result = null;
try
{
object target = _targetDelegate.Target;
MethodInfo method = _targetDelegate.Method;
int argCount = request.Arguments.Length;
int methodArgCount = method.GetParameters().Count();
if (argCount != methodArgCount)
{
throw new ArgumentException("Parameter Count Mismatch");
}
result = _targetDelegate.DynamicInvoke(request.Arguments);
}
catch (TargetInvocationException ex)
{
// Unroll the exception
throw ex.InnerException;
}
return(result);
}
/// <summary>
/// A method that creates a service instance as a singleton.
/// </summary>
/// <param name="request">The <see cref="IFactoryRequest"/> instance that describes the requested service.</param>
/// <returns>A service instance as a singleton.</returns>
public override T CreateInstance(IFactoryRequest request)
{
var key = new { request.ServiceName, request.ServiceType, request.Container };
if (_instances.ContainsKey(key))
{
return(_instances[key]);
}
lock (_lock)
{
if (_instances.ContainsKey(key))
{
return(_instances[key]);
}
T result = _createInstance(request);
if (result != null)
{
_instances[key] = result;
}
}
return(_instances[key]);
}
/// <summary>
/// Generates the <see cref="Action{T}"/> delegate that will emit
/// the necessary <see cref="IInvocationInfo"/> information.
/// </summary>
/// <param name="request">The <see cref="IFactoryRequest"/> instance that describes the requested service type.</param>
/// <returns>A delegate that can emit the necessary <see cref="IInvocationInfo"/> context that will allow other developers to infer information about the method currently being executed.</returns>
public object CreateInstance(IFactoryRequest request)
{
var container = request.Container;
Action <MethodDefinition> result =
method =>
{
var body = method.Body;
// Add the IInvocationInfo
// instance only once
var localAlreadyExists = (from VariableDefinition local in body.Variables
where local.Name == "___invocationInfo___"
select local).Count() > 0;
if (localAlreadyExists)
{
return;
}
var variable = method.AddLocal <IInvocationInfo>();
variable.Name = "___invocationInfo___";
var emitInfo = (IEmitInvocationInfo)container.GetService(typeof(IEmitInvocationInfo));
emitInfo.Emit(method, method, variable);
};
return(result);
}
/// <summary>
/// Generates the <see cref="Action{T1, T2}"/> instance that will
/// weave the target type.
/// </summary>
/// <param name="request">The <see cref="IFactoryRequest"/> that describes the service request.</param>
/// <returns>The <see cref="Action{T1, T2}"/> instance that will weave the target type.</returns>
public object CreateInstance(IFactoryRequest request)
{
var container = request.Container;
Action<string, TypeDefinition> result =
(weaverName, type) =>
{
// Get the method weaver instance that matches the weaverName
var methodWeaver = (IHostWeaver<TypeDefinition>)container.GetService(weaverName, typeof(IHostWeaver<TypeDefinition>));
// Wrap it in a type weaver
var typeWeaver = (ITypeWeaver)container.GetService("AutoMethodWeaver", typeof(ITypeWeaver), methodWeaver);
var module = type.Module;
if (!typeWeaver.ShouldWeave(type))
return;
// Modify the host module
typeWeaver.ImportReferences(module);
typeWeaver.AddAdditionalMembers(module);
// Weave the type itself
typeWeaver.Weave(type);
};
return result;
}
/// <summary>
/// Generates the <see cref="Action{T1, T2}"/> instance that will
/// weave the target type.
/// </summary>
/// <param name="request">The <see cref="IFactoryRequest"/> that describes the service request.</param>
/// <returns>The <see cref="Action{T1, T2}"/> instance that will weave the target type.</returns>
public object CreateInstance(IFactoryRequest request)
{
IServiceContainer container = request.Container;
Action <string, TypeDefinition> result =
(weaverName, type) =>
{
// Get the method weaver instance that matches the weaverName
var methodWeaver =
(IHostWeaver <TypeDefinition>)
container.GetService(weaverName, typeof(IHostWeaver <TypeDefinition>));
// Wrap it in a type weaver
var typeWeaver =
(ITypeWeaver)container.GetService("AutoMethodWeaver", typeof(ITypeWeaver), methodWeaver);
ModuleDefinition module = type.Module;
if (!typeWeaver.ShouldWeave(type))
{
return;
}
// Modify the host module
typeWeaver.ImportReferences(module);
typeWeaver.AddAdditionalMembers(module);
// Weave the type itself
typeWeaver.Weave(type);
};
return(result);
}
/// <summary>
/// Generates the <see cref="Action{T}"/> delegate that will emit
/// the necessary <see cref="IInvocationInfo"/> information.
/// </summary>
/// <param name="request">The <see cref="IFactoryRequest"/> instance that describes the requested service type.</param>
/// <returns>A delegate that can emit the necessary <see cref="IInvocationInfo"/> context that will allow other developers to infer information about the method currently being executed.</returns>
public object CreateInstance(IFactoryRequest request)
{
IServiceContainer container = request.Container;
Action<MethodDefinition> result =
method =>
{
MethodBody body = method.Body;
// Add the IInvocationInfo
// instance only once
bool localAlreadyExists = (from VariableDefinition local in body.Variables
where local.Name == "___invocationInfo___"
select local).Count() > 0;
if (localAlreadyExists)
return;
VariableDefinition variable = method.AddLocal<IInvocationInfo>();
variable.Name = "___invocationInfo___";
var emitInfo = (IEmitInvocationInfo) container.GetService(typeof (IEmitInvocationInfo));
emitInfo.Emit(method, method, variable);
};
return result;
}
/// <summary>
/// Instantiates the service type using the given delegate.
/// </summary>
/// <param name="request">The <see cref="IFactoryRequest"/> that describes the service that needs to be created.</param>
/// <returns>The service instance.</returns>
public object CreateInstance(IFactoryRequest request)
{
object result = null;
try
{
var target = _targetDelegate.Target;
var method = _targetDelegate.Method;
var argCount = request.Arguments.Length;
var methodArgCount = method.GetParameters().Count();
if (argCount != methodArgCount)
{
Console.WriteLine("Parameter Count Mismatch");
}
result = _targetDelegate.DynamicInvoke(request.Arguments);
//result = method.Invoke(target, request.Arguments);
}
catch (TargetInvocationException ex)
{
// Unroll the exception
throw ex.InnerException;
}
return(result);
}
public object CreateInstance(IFactoryRequest request)
{
Type serviceType = request.ServiceType;
Type typeArgument = serviceType.GetGenericArguments()[0];
Type resultType = typeof(SampleGenericImplementation <>).MakeGenericType(typeArgument);
return(Activator.CreateInstance(resultType));
}
/// <summary>
/// Instantiates the actual factory instance and uses it to instantiate the target service type.
/// </summary>
/// <param name="request">The <see cref="IFactoryRequest"/> that describes the service to be created.</param>
/// <returns>A valid service instance.</returns>
public object CreateInstance(IFactoryRequest request)
{
// Create the factory if necessary
if (_realFactory == null)
_realFactory = _getFactory(request);
return _realFactory == null ? null : _realFactory.CreateInstance(request);
}
public object CreateInstance(IFactoryRequest request)
{
Type serviceType = request.ServiceType;
Type typeArgument = serviceType.GetGenericArguments()[0];
Type resultType = typeof (SampleGenericImplementation<>).MakeGenericType(typeArgument);
return Activator.CreateInstance(resultType);
}
/// <summary>
/// Creates a service instance using the given <paramref name="factoryRequest"/> and <see cref="IFactory"/> instance.
/// </summary>
/// <param name="factoryRequest">The <see cref="IFactoryRequest"/> instance that describes the context of the service request.</param>
/// <param name="factory">The <see cref="IFactory"/> instance that will be used to instantiate the service type.</param>
/// <returns>A valid service instance.</returns>
public virtual object CreateFrom(IFactoryRequest factoryRequest, IFactory factory)
{
object instance = null;
// Generate the service instance
if (factory != null)
instance = factory.CreateInstance(factoryRequest);
return instance;
}
/// <summary>
/// Instantiates the actual factory instance and uses it to instantiate the target service type.
/// </summary>
/// <param name="request">The <see cref="IFactoryRequest"/> that describes the service to be created.</param>
/// <returns>A valid service instance.</returns>
public object CreateInstance(IFactoryRequest request)
{
// Create the factory if necessary
if (_realFactory == null)
{
_realFactory = _getFactory(request);
}
return(_realFactory == null ? null : _realFactory.CreateInstance(request));
}
public object CreateInstance(IFactoryRequest request)
{
if (string.IsNullOrEmpty(request.ServiceName))
throw new ArgumentNullException("ServiceName");
var myClass = new MyClass<string>();
myClass.Value = request.ServiceName;
return myClass;
}
T IFactory <T> .CreateInstance(IFactoryRequest request)
{
var factory = _factory as IFactory <T>;
if (factory == null)
{
return(default(T));
}
return(factory.CreateInstance(request));
}
/// <summary>
/// Creates a service instance using the given <paramref name="factoryRequest" /> and <see cref="IFactory" /> instance.
/// </summary>
/// <param name="factoryRequest">
/// The <see cref="IFactoryRequest" /> instance that describes the context of the service
/// request.
/// </param>
/// <param name="factory">The <see cref="IFactory" /> instance that will be used to instantiate the service type.</param>
/// <returns>A valid service instance.</returns>
public virtual object CreateFrom(IFactoryRequest factoryRequest, IFactory factory)
{
object instance = null;
// Generate the service instance
if (factory != null)
{
instance = factory.CreateInstance(factoryRequest);
}
return(instance);
}
public object CreateInstance(IFactoryRequest request)
{
if (string.IsNullOrEmpty(request.ServiceName))
{
throw new ArgumentNullException("ServiceName");
}
var myClass = new MyClass <string>();
myClass.Value = request.ServiceName;
return(myClass);
}
/// <summary>
/// Overridden. Uses the strongly-typed factory
/// to create the service instance every time
/// the <see cref="IFactory.CreateInstance"/> method
/// is called.
/// </summary>
/// <param name="request">The <see cref="IFactoryRequest"/> instance that describes the requested service.</param>
/// <returns>An object instance that represents the service to be created. This cannot be <c>null</c>.</returns>
public object CreateInstance(IFactoryRequest request)
{
if (_factory == null)
{
return(default(T));
}
var factory = _factory as IFactory <T>;
if (factory == null)
{
return(default(T));
}
return(factory.CreateInstance(request));
}
/// <summary>
/// Instantiates the service type using the actual factory.
/// </summary>
/// <param name="request">The <see cref="IFactoryRequest" /> instance that describes the service to be created.</param>
/// <returns></returns>
public T CreateInstance(IFactoryRequest request)
{
if (_getFactory == null)
{
throw new NotImplementedException();
}
var factory = _getFactory(request) as IFactory <T>;
if (factory == null)
{
return(default(T));
}
return(factory.CreateInstance(request));
}
/// <summary>
/// Generates <see cref="Action{T1, T2}"/> instances
/// that apply a specific method weaver (with the name given in the first delegate parameter)
/// to every type in every module of an <see cref="AssemblyDefinition"/> instance.
/// </summary>
/// <param name="request">The <see cref="IFactoryRequest"/> that describes the service request.</param>
/// <returns>An action delegate that will apply a specific method weaver to all the types in the given assembly.</returns>
public object CreateInstance(IFactoryRequest request)
{
var container = request.Container;
Action<string, AssemblyDefinition> result =
(weaverName, assembly) =>
{
// Create the lambda that can modify the target types
var weaveWith = (Action<string, TypeDefinition>)container.GetService("TypeWeaver", typeof(Action<string, TypeDefinition>));
var mainModule = assembly.MainModule;
foreach (TypeDefinition type in mainModule.Types)
{
// Use the method weaver on the target type
weaveWith(weaverName, type);
}
};
return result;
}
/// <summary>
/// Generates <see cref="Action{T1, T2}"/> instances
/// that apply a specific method weaver (with the name given in the first delegate parameter)
/// to every type in every module of an <see cref="AssemblyDefinition"/> instance.
/// </summary>
/// <param name="request">The <see cref="IFactoryRequest"/> that describes the service request.</param>
/// <returns>An action delegate that will apply a specific method weaver to all the types in the given assembly.</returns>
public object CreateInstance(IFactoryRequest request)
{
var container = request.Container;
Action <string, AssemblyDefinition> result =
(weaverName, assembly) =>
{
// Create the lambda that can modify the target types
var weaveWith = (Action <string, TypeDefinition>)container.GetService("TypeWeaver", typeof(Action <string, TypeDefinition>));
var mainModule = assembly.MainModule;
foreach (TypeDefinition type in mainModule.Types)
{
// Use the method weaver on the target type
weaveWith(weaverName, type);
}
};
return(result);
}
/// <summary>
/// Creates the service instance using the given <see cref="IFactoryRequest"/>
/// instance. Every service instance created from this factory will
/// only be created once per thread.
/// </summary>
/// <param name="request">The <see cref="IFactoryRequest"/> instance that describes the requested service.</param>
/// <returns>A a service instance as thread-wide singleton.</returns>
public override T CreateInstance(IFactoryRequest request)
{
var threadId = Thread.CurrentThread.ManagedThreadId;
var result = default(T);
lock (_storage)
{
// Create the service instance only once
if (!_storage.ContainsKey(threadId))
{
_storage[threadId] = _createInstance(request);
}
result = _storage[threadId];
}
return(result);
}
/// <summary>
/// Instantiates the service type using the given delegate.
/// </summary>
/// <param name="request">The <see cref="IFactoryRequest"/> that describes the service that needs to be created.</param>
/// <returns>The service instance.</returns>
public object CreateInstance(IFactoryRequest request)
{
object result = null;
try
{
var target = _targetDelegate.Target;
var method = _targetDelegate.Method;
var argCount = request.Arguments.Length;
var methodArgCount = method.GetParameters().Count();
if (argCount != methodArgCount)
Console.WriteLine("Parameter Count Mismatch");
result = _targetDelegate.DynamicInvoke(request.Arguments);
//result = method.Invoke(target, request.Arguments);
}
catch (TargetInvocationException ex)
{
// Unroll the exception
throw ex.InnerException;
}
return result;
}
/// <summary>
/// Instantiates the service type using the given delegate.
/// </summary>
/// <param name="request">The <see cref="IFactoryRequest"/> that describes the service that needs to be created.</param>
/// <returns>The service instance.</returns>
public object CreateInstance(IFactoryRequest request)
{
object result = null;
try
{
object target = _targetDelegate.Target;
MethodInfo method = _targetDelegate.Method;
int argCount = request.Arguments.Length;
int methodArgCount = method.GetParameters().Count();
if (argCount != methodArgCount)
throw new ArgumentException("Parameter Count Mismatch");
result = _targetDelegate.DynamicInvoke(request.Arguments);
}
catch (TargetInvocationException ex)
{
// Unroll the exception
throw ex.InnerException;
}
return result;
}
public object CreateInstance(IFactoryRequest request)
{
return(new SampleClass());
}
T IFactory <T> .CreateInstance(IFactoryRequest request)
{
return(_factoryMethod(request));
}
public object CreateInstance(IFactoryRequest request)
{
return "42";
}
/// <summary>
/// Instantiates an object reference using the given factory method.
/// </summary>
/// <param name="request">The <see cref="IFactoryRequest"/> instance that describes the requested service.</param>
/// <returns>A non-null object reference that represents the service type.</returns>
public object CreateInstance(IFactoryRequest request)
{
return _factoryMethod(request);
}
public object CreateInstance(IFactoryRequest request)
{
return new SampleClass();
}
public object CreateInstance(IFactoryRequest request)
{
return("42");
}
/// <summary>
/// This method creates a new service instance every time
/// it is invoked.
/// </summary>
/// <param name="request">The <see cref="IFactoryRequest"/> instance that describes the requested service.</param>
/// <returns>A non-null object reference.</returns>
public override T CreateInstance(IFactoryRequest request)
{
return(_createInstance(request));
}
/// <summary>
/// Instantiates an object reference using the given factory method.
/// </summary>
/// <param name="request">The <see cref="IFactoryRequest"/> instance that describes the requested service.</param>
/// <returns>A non-null object reference that represents the service type.</returns>
public object CreateInstance(IFactoryRequest request)
{
return(_factoryMethod(request));
}
/// <summary>
/// Returns the object instance that given when the <see cref="CreatorFromInstance"/> class instance was initialized.
/// </summary>
/// <param name="factoryRequest">The <see cref="IFactoryRequest"/> instance that describes the context of the service request.</param>
/// <param name="factory">The <see cref="IFactory"/> instance that will be used to instantiate the service type.</param>
/// <returns>A valid service instance.</returns>
public object CreateFrom(IFactoryRequest factoryRequest, IFactory factory)
{
return(_instance);
}
object IFactory.CreateInstance(IFactoryRequest request)
{
IFactory <T> thisFactory = this;
return(thisFactory.CreateInstance(request));
}
/// <summary>
/// Creates a service instance using the given container.
/// </summary>
/// <param name="request">The <see cref="IFactoryRequest"/> instance that describes the requested service.</param>
/// <returns>An object instance that represents the service to be created. This cannot be <c>null</c>.</returns>
object IFactory.CreateInstance(IFactoryRequest request)
{
return(CreateInstance(request));
}
public ISampleService CreateInstance(IFactoryRequest request)
{
return(new SampleClass());
}
/// <summary>
/// Returns the object instance that given when the <see cref="CreatorFromInstance"/> class instance was initialized.
/// </summary>
/// <param name="factoryRequest">The <see cref="IFactoryRequest"/> instance that describes the context of the service request.</param>
/// <param name="factory">The <see cref="IFactory"/> instance that will be used to instantiate the service type.</param>
/// <returns>A valid service instance.</returns>
public object CreateFrom(IFactoryRequest factoryRequest, IFactory factory)
{
return _instance;
}
/// <summary> /// Creates a service instance using the given container. /// </summary> /// <remarks> /// <see cref="IFactory"/> developers can inherit from this class /// instead of having to write their own custom factories /// from scratch. This should cut down on some of the boilerplate /// code necessary to get a factory class up and running. /// </remarks> /// <param name="request">The <see cref="IFactoryRequest"/> instance that describes the requested service.</param> /// <returns>An object instance that represents the service to be created. This cannot be <c>null</c>.</returns> public abstract T CreateInstance(IFactoryRequest request);
