Java interface Implementation Service__java in SCA

1, Java-based service interfaces and Java classes to implement components

Interface package Services.hello;
Public interface HelloService {
string Hello (String message);
}

Realize package Services.hello;
Import Org.osoa.sca.annotations. * ;
@Service (HelloService. Class)
public class Helloserviceimpl implements HelloService {
public string, hello (String message) {
...
}
}

The corresponding componet Type.? XML version= "1.0" encoding= "ASCII"?>
< ComponentType xmlns =http://www.osoa.org/xmlns/sca/1.0 >
< service name = "HelloService" >
< interface. Java interface = "Services.hello.HelloService"/>
</Service >
</ComponentType >

2, its definition of service interface and implementation of the Java implementation Class package Services.hello;
Import Org.osoa.sca.annotations. * ;
@Service (Helloserviceimpl. Class)
public class Helloserviceimpl implements Anotherinterface {
public string, hello (String message) {
...
}
...
}

According to the default rules for @service annotations: If a service has only one interface, implementing the interface is to implement the service.
So the above implementation can also be rewritten as follows: Package Services.hello;
public class Helloserviceimpl implements Anotherinterface {
public string, hello (String message) {
...
}
...
}

The corresponding component Type.? XML version= "1.0" encoding= "ASCII"?>
< ComponentType xmlns =http://www.osoa.org/xmlns/sca/1.0 >
< service name = "HelloService" >
< interface. Java interface = "Services.hello.HelloServiceImpl"/>
</Service >
</ComponentType >

3, a Java implementation class implements two service package  services.hello;
Import  org.osoa.sca.annotations. *;
@Service (interfaces = {HelloService. class,  anotherinterface. Class})
public   class   helloserviceimpl  implements  helloservice, anotherinterface {
     Public  string hello (string message)  {
         ...
    }
    ..
}

The corresponding component Type.? XML version= "1.0" encoding= "ASCII"?>
< ComponentType xmlns =http://www.osoa.org/xmlns/sca/1.0 >
< service name = "HelloService" >
< interface. Java interface = "Services.hello.HelloService"/>
</Service >
< service name = "Anotherservice" >
< interface. Java interface = "Services.hello.AnotherService"/>
</Service >
</ComponentType >

4, Java implementation class through the interface subclass relationship to achieve two service

Service 1 package Services.hello;
Public interface HelloService {
string Hello (String message);
}

Service 2 package Services.hello;
Public interface HelloService2 extends HelloService {
}

Realize package Services.hello;
Import Org.osoa.sca.annotations. * ;
@Service (interfaces = {HelloService. class, HelloService2. Class})
public class Helloserviceimpl implements HelloService {
public string, hello (String message) {
...
}
}

Corresponds to Component Type: xml version= "1.0"  encoding= "ASCII"?>
< componenttype  xmlns = "http ://www.osoa.org/xmlns/sca/1.0 ">
     < service  name =" HelloService ">
         < interface Java interface = "Services.hello.HelloService "/>
     </service >
     < service  name =" HelloService2 ">
         < interface. Java interface =" Services.hello.HelloService2 "/>
     </service >
</componenttype