One possible solution is that you could follow convention that Mark Seeman
gives on SO @
http://stackoverflow.com/questions/9339840/register-component-based-on-parameter-name-on-requestor-in-windsor
*Each consumer of **IDataProcessor will signal the intended role of the
dataProcessor by its name.*
public class DataProcessorConvention : ISubDependencyResolver
{
private readonly IKernel kernel;
public DataProcessorConvention (IKernel kernel)
{
this.kernel = kernel;
}
public bool CanResolve(CreationContext context,
ISubDependencyResolver contextHandlerResolver,
ComponentModel model,
DependencyModel dependency)
{
return typeof(IDataProcessor).IsAssignableFrom(dependency.TargetType);
}
public object Resolve(CreationContext context,
ISubDependencyResolver contextHandlerResolver,
ComponentModel model,
DependencyModel dependency)
{
Type representativeSettingsType = typeof (DataProcessorImplementation1);
Type concreteSettingsType = representativeSettingsType.Assembly
.GetExportedTypes()
.Where(t =>
t.Name.Equals(dependency.DependencyKey,
StringComparison.OrdinalIgnoreCase))
.SingleOrDefault();
return (concreteSettingsType != null
? kernel.Resolve(concreteSettingsType.FullName,
concreteSettingsType)
:
kernel.Resolve(representativeSettingsType.FullName,
representativeSettingsType));
}
}
public class DataServiceDependsOnImplementation1
{
private readonly IDataProcessor _dataProcessorImplementation1;
public DataServiceDependsOnImplementation1(IDataProcessor
dataProcessorImplementation1)
{
_dataProcessorImplementation1 = dataProcessorImplementation1;
}
...
} public class DataServiceDependsOnImplementation2
{
private readonly IDataProcessor _dataProcessorImplementation2;
public DataServiceDependsOnImplementation2(IDataProcessor
dataProcessorImplementation2)
{
_dataProcessorImplementation2 = dataProcessorImplementation2;
}
...
}
On Thu, Jan 3, 2013 at 12:53 PM, Sean Farrow
<[email protected]>wrote:
> Hi Fokes:****
>
> I’m new to Winsor and have a quick query:****
>
> I’ve got an interface IDataProcessor. I’ve then got several diferent
> implementations of this interface depending on whee the data is coming
> from.I’ve then got several classes that require tIDataProcessor
> implementations. What I’d like to do is to selectively construct a concrete
> instance depending on the name of the class requesting this.****
>
> I did start looking at IHandlerSelector, but I don’t think this gies me
> the name of the class bein instanciated.****
>
> Can anybody help please?****
>
> Regards****
>
> Sean.****
>
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Cheers,
Luke Hutton
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