com.opmath.test.j2ee.contact
Class ContactPK

java.lang.Object
  |
  +--com.opmath.test.j2ee.contact.ContactPK

All Implemented Interfaces:

Serializable

public class ContactPK

extends Object

implements Serializable

The primary key class for the Contact EJB. This is in fact a simple primary key - this class simply delegates to / wraps a long.

Copyright: (c) 2002 The Open Math Company Limited

The Terms of Distribution of this software are stipulated in the javadoc Overview for this project.

Since:

J2SDK 1.3.1, J2SDKEE 1.3.1, EJB 2.0

Version:

OpMath J2EE Example v1.0

Author:

Bruno Beloff bruno.beloff@opmath.com

See Also:

ContactBean, Serialized Form

Field Summary

long	id The id of the key.

Constructor Summary

ContactPK(long id)
Constructs a new ContactPK.

Method Summary

boolean	equals(Object o) Returns true iff the given Object is the same class as this instance, and has the same id.
long	getId() Returns the id of this ContactPK.
int	hashCode() Returns the hash code for this ContactPK.
String	toString() Returns a descriptive string for this ContactPK instance.

Methods inherited from class java.lang.Object

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

Field Detail

id

public long id

The id of the key. This is the only instance variable for this class. Note that it is declared as public to match EJB recommendations [ http://java.sun.com/j2ee/tutorial/1_3-fcs/doc/CMP.html].

Constructor Detail

ContactPK

public ContactPK(long id)

Constructs a new ContactPK. The new ContactPK instance has the given id.

Parameters:

id - a String specifying the index of the new instance.

Method Detail

getId

public long getId()

Returns the id of this ContactPK.

Returns:

a long carrying the index of this ContactPK.

equals

public boolean equals(Object o)

Returns true iff the given Object is the same class as this instance, and has the same id.

Overrides:

equals in class Object

Returns:

a boolean indicating equivalance.

hashCode

public int hashCode()

Returns the hash code for this ContactPK. The value returned is the hash code of a Longconstructed from the id of this ContactPK.

Overrides:

hashCode in class Object

Returns:

an int hash code.

toString

public String toString()

Returns a descriptive string for this ContactPK instance.

Overrides:

toString in class Object

Returns:

a descriptive String.