c# - Define filter for DecorateAllWith() method in structure-map 3 -

i used following statement decorate icommandhandlers<> decorator1<>:

objectfactory.configure(x => {    x.for(typeof(icommandhandler<>)).decorateallwith(typeof(decorator1<>)); }); 

but because decorator1<> implements icommandhandlers<>, decorator1<> class decorates too.

so, problem decorator1 registers inadvertently, when register icommandhandler<>'s. how can filter decoratewithall()to decorate icommandhandler<>, except decorator1<>?

objectfactory obsolete.

you can exclude decorator1<> being registered vanilla icommandhandler<> code this:

var container = new container(config => {     config.scan(scanner =>     {         scanner.assemblycontainingtype(typeof(icommandhandler<>));         scanner.exclude(t => t == typeof(decorator1<>));         scanner.connectimplementationstotypesclosing(typeof(icommandhandler<>));     });     config.for(typeof(icommandhandler<>)).decorateallwith(typeof(decorator1<>)); }); 

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update

for multiple modules can use the registry dsl compose portion of application

using structuremap; using structuremap.configuration.dsl;  public class commandhandlerregistry : registry {     public commandhandlerregistry()     {         scan(scanner =>         {             scanner.assemblycontainingtype(typeof(icommandhandler<>));             scanner.exclude(t => t == typeof(decorator1<>));             scanner.connectimplementationstotypesclosing(typeof(icommandhandler<>));         });         for(typeof(icommandhandler<>)).decorateallwith(typeof(decorator1<>));     } } 

only composition root needs aware of registry implementations.

 var container = new container(config => {     config.addregistry<commandhandlerregistry>(); }); 

you have option of finding registry instances @ runtime (you still need ensure required assemblies loaded)

var container = new container(config => {     var registries = (         assembly in appdomain.currentdomain.getassemblies()         type in assembly.definedtypes         typeof(registry).isassignablefrom(type)         !type.isabstract         !type.namespace.startswith("structuremap")         select activator.createinstance(type))         .cast<registry>();      foreach (var registry in registries)     {         config.addregistry(registry);     } });