Package org.apache.jackrabbit.oak.index.indexer.document.tree.store

Class PageFile

java.lang.Object

org.apache.jackrabbit.oak.index.indexer.document.tree.store.PageFile

All Implemented Interfaces:

MemoryObject

public class PageFile
extends Object
implements MemoryObject

A B-tree page (leaf, or inner node). An inner node contains one more value than keys. A leaf page has the same number of keys and values.

Constructor Summary

Constructors

Constructor	Description
PageFile(boolean innerNode, long maxFileSizeBytes)

Method Summary

Modifier and Type	Method	Description
void	addChild(int index, String childKey, String newChildFileName)
void	appendRecord(String k, String v)
boolean	canSplit()
PageFile	copy()
long	estimatedMemory()	Get the estimate memory size.
static PageFile	fromBytes(byte[] data, long maxFileSizeBytes)
String	getChildValue(int index)
String	getFileName()
String	getKey(int index)
int	getKeyIndex(String key)
List<String>	getKeys()
String	getNextKey(String largerThan)
String	getNextRoot()
long	getUpdate()
String	getValue(int index)
int	getValueCount()
void	insertRecord(int index, String key, String value)
boolean	isInnerNode()
boolean	isModified()
void	removeKey(int index)
void	removeRecord(int index)
void	removeValue(int index)
void	setFileName(String fileName)
void	setModified(boolean modified)
void	setNextRoot(String nextRoot)
void	setUpdate(long update)
void	setValue(int index, String value)
int	sizeInBytes()
byte[]	toBytes()
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

PageFile

public PageFile(boolean innerNode,
                long maxFileSizeBytes)

Method Detail

estimatedMemory

public long estimatedMemory()

Description copied from interface: MemoryObject

Get the estimate memory size. The value must not change afterwards, otherwise the memory calculation is wrong.

Specified by:

estimatedMemory in interface MemoryObject

Returns:

the memory in bytes

setFileName

public void setFileName(String fileName)

getFileName

public String getFileName()

setUpdate

public void setUpdate(long update)

fromBytes

public static PageFile fromBytes(byte[] data,
                                 long maxFileSizeBytes)

toBytes

public byte[] toBytes()

toString

public String toString()

Overrides:

toString in class Object

copy

public PageFile copy()

addChild

public void addChild(int index,
                     String childKey,
                     String newChildFileName)

setValue

public void setValue(int index,
                     String value)

removeRecord

public void removeRecord(int index)

appendRecord

public void appendRecord(String k,
                         String v)

insertRecord

public void insertRecord(int index,
                         String key,
                         String value)

getUpdate

public long getUpdate()

sizeInBytes

public int sizeInBytes()

canSplit

public boolean canSplit()

getKeys

public List<String> getKeys()

getKeyIndex

public int getKeyIndex(String key)

getValue

public String getValue(int index)

getChildValue

public String getChildValue(int index)

getNextKey

public String getNextKey(String largerThan)

getNextRoot

public String getNextRoot()

setNextRoot

public void setNextRoot(String nextRoot)

removeKey

public void removeKey(int index)

removeValue

public void removeValue(int index)

isInnerNode

public boolean isInnerNode()

getValueCount

public int getValueCount()

getKey

public String getKey(int index)

setModified

public void setModified(boolean modified)

isModified

public boolean isModified()