javax.jdo.identity

Class CharIdentity

Implemented Interfaces:
Externalizable

public class CharIdentity
extends SingleFieldIdentity

This class is for identity with a single character field.
Version:
2.0

Field Summary

Fields inherited from class javax.jdo.identity.SingleFieldIdentity

hashCode, keyAsObject, msg

Constructor Summary

CharIdentity()
Constructor only for Externalizable.
CharIdentity(Class pcClass, Character key)
Constructor with class and key.
CharIdentity(Class pcClass, String str)
Constructor with class and key.
CharIdentity(Class pcClass, char key)
Constructor with class and key.

Method Summary

protected Object
createKeyAsObject()
Create the key as an Object.
boolean
equals(Object obj)
Determine if the other object represents the same object id.
char
getKey()
Return the key.
void
readExternal(ObjectInput in)
Read this object.
String
toString()
Return the String form of the key.
void
writeExternal(ObjectOutput out)
Write this object.

Methods inherited from class javax.jdo.identity.SingleFieldIdentity

assertKeyNotNull, createKeyAsObject, equals, getKeyAsObject, getTargetClass, getTargetClassName, hashClassName, hashCode, readExternal, setKeyAsObject, writeExternal

Constructor Details

CharIdentity

public CharIdentity()
Constructor only for Externalizable.

CharIdentity

public CharIdentity(Class pcClass,
                    Character key)
Constructor with class and key.
Parameters:
pcClass - the target class
key - the key

CharIdentity

public CharIdentity(Class pcClass,
                    String str)
Constructor with class and key. The String must have exactly one character.
Parameters:
pcClass - the target class
str - the key

CharIdentity

public CharIdentity(Class pcClass,
                    char key)
Constructor with class and key.
Parameters:
pcClass - the target class
key - the key

Method Details

createKeyAsObject

protected Object createKeyAsObject()
Create the key as an Object.
Overrides:
createKeyAsObject in interface SingleFieldIdentity
Returns:
the key as an Object
Since:
2.0

equals

public boolean equals(Object obj)
Determine if the other object represents the same object id.
Overrides:
equals in interface SingleFieldIdentity
Parameters:
obj - the other object
Returns:
true if both objects represent the same object id

getKey

public char getKey()
Return the key.
Returns:
the key

readExternal

public void readExternal(ObjectInput in)
            throws IOException,
                   ClassNotFoundException
Read this object. Read the superclass first.
Overrides:
readExternal in interface SingleFieldIdentity
Parameters:
in - the input

toString

public String toString()
Return the String form of the key.
Returns:
the String form of the key

writeExternal

public void writeExternal(ObjectOutput out)
            throws IOException
Write this object. Write the superclass first.
Overrides:
writeExternal in interface SingleFieldIdentity
Parameters:
out - the output