org.apache.hadoop.hbase.codec.prefixtree.encode.column

类 ColumnNodeWriter

java.lang.Object

org.apache.hadoop.hbase.codec.prefixtree.encode.column.ColumnNodeWriter

@InterfaceAudience.Private
public class ColumnNodeWriter
extends Object

Column nodes can be either family nodes or qualifier nodes, as both sections encode similarly. The family and qualifier sections of the data block are made of 1 or more of these nodes.

Each node is composed of 3 sections:

• tokenLength: UVInt (normally 1 byte) indicating the number of token bytes
• token[]: the actual token bytes
• parentStartPosition: the offset of the next node from the start of the family or qualifier section

字段概要

字段

限定符和类型	字段和说明
protected PrefixTreeBlockMeta	blockMeta
protected TokenizerNode	builderNode fields
protected ColumnNodeType	nodeType
protected int	parentStartPosition
protected byte[]	token
protected int	tokenLength

构造器概要

构造器

构造器和说明
ColumnNodeWriter(PrefixTreeBlockMeta blockMeta, TokenizerNode builderNode, ColumnNodeType nodeType) construct

方法概要

方法

限定符和类型	方法和说明
int	getWidthUsingPlaceholderForOffsetWidth(int offsetWidthPlaceholder) This method is called before blockMeta.qualifierOffsetWidth is known, so we pass in a placeholder.
boolean	isRoot() methods
void	setParentStartPosition(int parentStartPosition) get/set
void	setTokenBytes(ByteRange source)
String	toString() standard methods
void	writeBytes(OutputStream os)

从类继承的方法 java.lang.Object

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

字段详细资料

builderNode

protected TokenizerNode builderNode

fields

blockMeta

protected PrefixTreeBlockMeta blockMeta

tokenLength

protected int tokenLength

token

protected byte[] token

parentStartPosition

protected int parentStartPosition

nodeType

protected ColumnNodeType nodeType

构造器详细资料

ColumnNodeWriter

public ColumnNodeWriter(PrefixTreeBlockMeta blockMeta,
                TokenizerNode builderNode,
                ColumnNodeType nodeType)

construct

方法详细资料

isRoot

public boolean isRoot()

methods

getWidthUsingPlaceholderForOffsetWidth

public int getWidthUsingPlaceholderForOffsetWidth(int offsetWidthPlaceholder)

This method is called before blockMeta.qualifierOffsetWidth is known, so we pass in a placeholder.

参数:

offsetWidthPlaceholder - the placeholder

返回:

node width

writeBytes

public void writeBytes(OutputStream os)
                throws IOException

抛出:

IOException

setTokenBytes

public void setTokenBytes(ByteRange source)

toString

public String toString()

standard methods

覆盖:

toString 在类中 Object

setParentStartPosition

public void setParentStartPosition(int parentStartPosition)

get/set