org.apache.derby.iapi.store.raw

Class PageKey

java.lang.Object

org.apache.derby.iapi.store.raw.PageKey

public final class PageKey
extends java.lang.Object

A key that identifies a BasePage. Used as the key for the caching mechanism.
MT - Immutable :

Field Summary

Fields

Modifier and Type	Field and Description
private ContainerKey	container
private long	pageNumber

Constructor Summary

Constructors

Constructor and Description
PageKey(ContainerKey key, long pageNumber)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(java.lang.Object other)
ContainerKey	getContainerId()
long	getPageNumber()
int	hashCode()
static PageKey	read(java.io.ObjectInput in)
java.lang.String	toString()
void	writeExternal(java.io.ObjectOutput out)

Methods inherited from class java.lang.Object

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

Field Detail

container

private final ContainerKey container

pageNumber

private final long pageNumber

Constructor Detail

PageKey

public PageKey(ContainerKey key,
       long pageNumber)

Method Detail

getPageNumber

public long getPageNumber()

getContainerId

public ContainerKey getContainerId()

writeExternal

public void writeExternal(java.io.ObjectOutput out)
                   throws java.io.IOException

Throws:

java.io.IOException

read

public static PageKey read(java.io.ObjectInput in)
                    throws java.io.IOException

Throws:

java.io.IOException

equals

public boolean equals(java.lang.Object other)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object