org.datanucleus.enhancer.spi

Class CharFieldPK

java.lang.Object

org.datanucleus.enhancer.spi.SingleFieldPK

org.datanucleus.enhancer.spi.CharFieldPK

All Implemented Interfaces:

Externalizable, Serializable, Comparable

public class CharFieldPK
extends SingleFieldPK

Single-Field identity with a char/Character field.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.datanucleus.enhancer.spi.SingleFieldPK

hashCode, keyAsObject

Constructor Summary

Constructors

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

Method Summary

Methods

Modifier and Type	Method and Description
int	compareTo(Object o)
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 org.datanucleus.enhancer.spi.SingleFieldPK

assertKeyNotNull, getKeyAsObject, getTargetClass, getTargetClassName, hashClassName, hashCode, setKeyAsObject

Methods inherited from class java.lang.Object

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

Constructor Detail

CharFieldPK

public CharFieldPK(Class pcClass,
           char key)

Constructor with class and key.

Parameters:

pcClass - the target class

key - the key

CharFieldPK

public CharFieldPK(Class pcClass,
           Character key)

Constructor with class and key.

Parameters:

pcClass - the target class

key - the key

CharFieldPK

public CharFieldPK(Class pcClass,
           String str)

Constructor with class and key. The String must have exactly one character.

Parameters:

pcClass - the target class

str - the key

CharFieldPK

public CharFieldPK()

Constructor only for Externalizable.

Method Detail

getKey

public char getKey()

Return the key.

Returns:

the key

toString

public String toString()

Return the String form of the key.

Overrides:

toString in class Object

Returns:

the String form of the key

equals

public boolean equals(Object obj)

Determine if the other object represents the same object id.

Overrides:

equals in class SingleFieldPK

Parameters:

obj - the other object

Returns:

true if both objects represent the same object id

compareTo

public int compareTo(Object o)

createKeyAsObject

protected Object createKeyAsObject()

Create the key as an Object.

Overrides:

createKeyAsObject in class SingleFieldPK

Returns:

the key as an Object

Since:

2.0

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Write this object. Write the superclass first.

Specified by:

writeExternal in interface Externalizable

Overrides:

writeExternal in class SingleFieldPK

Parameters:

out - the output

Throws:

IOException

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Read this object. Read the superclass first.

Specified by:

readExternal in interface Externalizable

Overrides:

readExternal in class SingleFieldPK

Parameters:

in - the input

Throws:

IOException

ClassNotFoundException