com.cafesoft.core.service
Class StandardServiceReference

java.lang.Object
  |
  +--com.cafesoft.core.service.StandardServiceReference

All Implemented Interfaces:

ServiceReference

public class StandardServiceReference

extends Object

implements ServiceReference

StandardServiceReference contains parameters that uniquely identify a Service type or an instance within some scope. This is useful for:

• defining dependencies on specific Services types or instances. If an
• constructing and managing metadata about Service instances

Field Summary

protected String	id The identifier of the referenced Service
protected Class	type The Class indicating the Service type

Constructor Summary

StandardServiceReference(String id, Class type)
Create a new StandardServiceReference.

Method Summary

String	getId() Get the identifier of the referenced Service.
Class	getType() Get the type of the referenced Service.
int	hashCode() Get the ServiceReference hashcode.
boolean	matches(Service service) Check to see if a Service matches this ServiceReference.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

id

protected String id

The identifier of the referenced Service

type

protected Class type

The Class indicating the Service type

Constructor Detail

StandardServiceReference

public StandardServiceReference(String id,
                                Class type)

Create a new StandardServiceReference.

Parameters:

id - the service identifier (or null to reference a Service by only it's type).

type - the Class corresponding the the Service type.

Method Detail

getId

public String getId()

Get the identifier of the referenced Service.

Specified by:

getId in interface ServiceReference

Returns:

the identifier of the referenced Service or null if the reference is not for a specific instance.

getType

public Class getType()

Get the type of the referenced Service.

Specified by:

getType in interface ServiceReference

Returns:

the Class that specifies the type of the referenced Service.

matches

public boolean matches(Service service)

Check to see if a Service matches this ServiceReference.

Specified by:

matches in interface ServiceReference

Parameters:

service - the Service instance.

Returns:

true if the Service is not null and:

1. this ServiceReference DOES NOT specify a Service id and the Service implements the type within this ServiceReference.
2. this ServiceReference DOES specify a Service id and the Service implements the type in this ServiceReference AND has the same identifier as the one within this ServiceReference.

hashCode

public int hashCode()

Get the ServiceReference hashcode.

Overrides:

hashCode in class Object

Returns:

a hashcode that uniquely identifies a ServiceReference, which is unique by type and/or id.