com.sun.jini.reggie

Class EntryClass

java.lang.Object

com.sun.jini.reggie.EntryClass

All Implemented Interfaces:

Serializable

public class EntryClass
extends Object
implements Serializable

An EntryClass is a descriptor for an entry class, packaged up for transmission between client-side proxies and the registrar server. Instances are never visible to clients, they are private to the communication between the proxies and the server. Note that we don't transmit information about interfaces implemented by the class, because it isn't necessary given the specific use of type information for entries.

This class only has a bare minimum of methods, to minimize the amount of code downloaded into clients.

Author:

Sun Microsystems, Inc.

See Also:

ClassMapper, Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected long	hash Hash for the type
protected String	name Class name
protected int	numFields Number of public fields
protected int	numInstances Number of instances of this class in service registrations
protected int	numTemplates Number of templates of this class in event registrations
protected EntryClass	replacement An instance containing only name and hash, no superclass info.
protected EntryClass	superclass Descriptor for the superclass

Constructor Summary

Constructors

Constructor and Description
EntryClass(Class clazz, EntryClass superclass) Should only be called by ClassMapper

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o) Returns true if the object passed in is an instance of EntryClass with the same type hash as this object.
String	getName() Returns the name of this type
int	getNumFields() Return the number of public fields (including superclasses)
int	getNumInstances() Returns the number of times this type is used in service registrations
int	getNumTemplates() Returns the number of times this type is used in event registrations
EntryClass	getReplacement() Return the replacement, if any, containing only name and rep.
EntryClass	getSuperclass() Return the superclass descriptor
int	hashCode() Return a hashcode for this type.
boolean	isAssignableFrom(EntryClass cls) This is really only needed in the registrar, but it's very convenient to have here.
void	setNumInstances(int numInstances) Set the number of instances of this class
void	setNumTemplates(int numTemplates) Set the number of templates of this class
Class	toClass(String codebase)
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

name

protected String name

Class name

hash

protected long hash

Hash for the type

superclass

protected EntryClass superclass

Descriptor for the superclass

numFields

protected int numFields

Number of public fields

numInstances

protected transient int numInstances

Number of instances of this class in service registrations

numTemplates

protected transient int numTemplates

Number of templates of this class in event registrations

replacement

protected transient EntryClass replacement

An instance containing only name and hash, no superclass info. This is only used on the registrar side, to minimize the amount of info transmitted back to clients.

Constructor Detail

EntryClass

public EntryClass(Class clazz,
                  EntryClass superclass)
           throws MarshalException

Should only be called by ClassMapper

Throws:

MarshalException

Method Detail

getSuperclass

public EntryClass getSuperclass()

Return the superclass descriptor

getNumFields

public int getNumFields()

Return the number of public fields (including superclasses)

setNumInstances

public void setNumInstances(int numInstances)

Set the number of instances of this class

setNumTemplates

public void setNumTemplates(int numTemplates)

Set the number of templates of this class

getReplacement

public EntryClass getReplacement()

Return the replacement, if any, containing only name and rep.

isAssignableFrom

public boolean isAssignableFrom(EntryClass cls)

This is really only needed in the registrar, but it's very convenient to have here.

See Also:

Class.isAssignableFrom(java.lang.Class<?>)

getNumInstances

public int getNumInstances()

Returns the number of times this type is used in service registrations

Returns:

number of instances of this type in use in service registrations

getNumTemplates

public int getNumTemplates()

Returns the number of times this type is used in event registrations

Returns:

number of times this type is used in event registrations

toClass

public Class toClass(String codebase)
              throws IOException,
                     ClassNotFoundException

Throws:

IOException

ClassNotFoundException

getName

public String getName()

Returns the name of this type

Returns:

the name of this type

equals

public boolean equals(Object o)

Returns true if the object passed in is an instance of EntryClass with the same type hash as this object. Returns false otherwise.

Overrides:

equals in class Object

Parameters:

o - object to compare this object against

Returns:

true if this object equals the object passed in; false otherwise.

hashCode

public int hashCode()

Return a hashcode for this type.

Overrides:

hashCode in class Object

Returns:

int the hashcode for this type

toString

public String toString()

Overrides:

toString in class Object