java.rmi.server

Class ObjID

java.lang.Object

java.rmi.server.ObjID

All Implemented Interfaces:

Serializable

public final class ObjID
extends Object
implements Serializable

Represents the object identifier, unique for the host that generated it. The ObjID contains inside the integer object identifier that, if needed, may indicated that this is a reference to one of the well known objects on that host (registry, activator or dgc) and the UID that ensures uniqueness.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static int	ACTIVATOR_ID Defines the ID of the activator.
static int	DGC_ID Defines the ID of the distributed garbage collector.
static int	REGISTRY_ID Defines the ID of the naming service.

Constructor Summary

Constructors

Constructor and Description
ObjID() Create the new object id, unique for this host.
ObjID(int id) Create the new object id defining the well known remotely accessible object, present in this host.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object obj) Compare for equality.
int	hashCode() Get the hashcode.
static ObjID	read(ObjectInput in) Read object id (as long), then the object UID.
String	toString() Get the string representation.
void	write(ObjectOutput out) Write object id as long, then the object UID.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

REGISTRY_ID

public static final int REGISTRY_ID

Defines the ID of the naming service.

See Also:

Constant Field Values

ACTIVATOR_ID

public static final int ACTIVATOR_ID

Defines the ID of the activator.

See Also:

Constant Field Values

DGC_ID

public static final int DGC_ID

Defines the ID of the distributed garbage collector.

See Also:

Constant Field Values

Constructor Detail

ObjID

public ObjID()

Create the new object id, unique for this host.

ObjID

public ObjID(int id)

Create the new object id defining the well known remotely accessible object, present in this host. The well - known objects are:

• REGISTRY_ID - RMI naming service.
• ACTIVATOR_ID - activator
• DGC_ID - distributed garbage collector (grants lease durations to keep the object before it is garbage collected.

Parameters:

id - the well known object id, one of the above.

Method Detail

write

public void write(ObjectOutput out)
           throws IOException

Write object id as long, then the object UID.

Throws:

IOException

read

public static ObjID read(ObjectInput in)
                  throws IOException

Read object id (as long), then the object UID.

Throws:

IOException

hashCode

public int hashCode()

Get the hashcode.

Overrides:

hashCode in class Object

Returns:

the hash code for this Object

See Also:

Object.equals(Object), System.identityHashCode(Object)

equals

public boolean equals(Object obj)

Compare for equality.

Overrides:

equals in class Object

Parameters:

obj - the Object to compare to

Returns:

whether this Object is semantically equal to another

See Also:

Object.hashCode()

toString

public String toString()

Get the string representation.

Overrides:

toString in class Object

Returns:

the String representing this Object, which may be null

See Also:

Object.getClass(), Object.hashCode(), Class.getName(), Integer.toHexString(int)