ServiceBus (org.refcodes:refcodes-servicebus 2.0.2 API)

Type Parameters:

S - the generic type

All Known Implementing Classes:

ServiceBusImpl
```
public interface ServiceBus<S extends Service<?>>
```
The ServiceBus defines the functionality for Service instances to look up other Service instances.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`hasService(ServiceMatcher<S> aServiceMatcher)`	Determines whether the given `ServiceMatcher` will result in a single `Service` to be looked up.
`S`	`lookupService(ServiceMatcher<S> aServiceMatcher)`	Looks for a service matching the given service descriptor and returns it if found.

- Method Detail
  - lookupService
```
S lookupService(ServiceMatcher<S> aServiceMatcher)
         throws UnknownServiceRuntimeException,
                AmbiguousServiceRuntimeException
```
    Looks for a service matching the given service descriptor and returns it if found.
    
    Parameters:
    
    aServiceMatcher - The ServiceMatcher describing the service for which to look for.
    
    Returns:
    
    The desired ServiceConfigurationError.
    
    Throws:
    
    UnknownServiceRuntimeException - in case no Service matched.
    
    AmbiguousServiceRuntimeException - in case more than one Service matched the ServiceMatcher.
  - hasService
```
boolean hasService(ServiceMatcher<S> aServiceMatcher)
```
    Determines whether the given ServiceMatcher will result in a single Service to be looked up. I.e. the ServiceMatcher must result in an unambiguous Service to be identified.
    
    Parameters:
    
    aServiceMatcher - The ServiceMatcher describing the Service for which to look for.
    
    Returns:
    
    True in case if exactly one Service is matching the matcher. Else false is returned (either more than one service was identified or none service was identified).