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

Class RowSectionWriter

java.lang.Object

org.apache.hadoop.hbase.codec.prefixtree.encode.row.RowSectionWriter

@InterfaceAudience.Private
public class RowSectionWriter
extends Object

Most of the complexity of the PrefixTree is contained in the "row section". It contains the row key trie structure used to search and recreate all the row keys. Each nub and leaf in this trie also contains references to offsets in the other sections of the data block that enable the decoder to match a row key with its qualifier, timestamp, type, value, etc.

The row section is a concatenated collection of RowNodeWriters. See that class for the internals of each row node.

Field Summary

Fields

Modifier and Type	Field and Description
protected PrefixTreeBlockMeta	blockMeta
protected ArrayList<RowNodeWriter>	leafWriters
protected ArrayList<TokenizerNode>	leaves
protected ArrayList<RowNodeWriter>	nonLeafWriters
protected ArrayList<TokenizerNode>	nonLeaves
protected int	numBytes
protected int	numLeafWriters
protected int	numNonLeafWriters
protected PrefixTreeEncoder	prefixTreeEncoder fields

Constructor Summary

Constructors

Constructor and Description
RowSectionWriter() construct
RowSectionWriter(PrefixTreeEncoder prefixTreeEncoder)

Method Summary

Methods

Modifier and Type	Method and Description
RowSectionWriter	compile() methods
protected static ArrayList<TokenizerNode>	filterByLeafAndReverse(ArrayList<TokenizerNode> ins, boolean leaves) static
ArrayList<RowNodeWriter>	getLeafWriters()
ArrayList<TokenizerNode>	getLeaves()
ArrayList<RowNodeWriter>	getNonLeafWriters()
ArrayList<TokenizerNode>	getNonLeaves()
int	getNumBytes() get/set
protected RowNodeWriter	initializeWriter(List<RowNodeWriter> list, int index, TokenizerNode builderNode)
void	reconstruct(PrefixTreeEncoder prefixTreeEncoder)
void	reset()
void	writeBytes(OutputStream os)

Methods inherited from class java.lang.Object

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

Field Detail

prefixTreeEncoder

protected PrefixTreeEncoder prefixTreeEncoder

fields

blockMeta

protected PrefixTreeBlockMeta blockMeta

numBytes

protected int numBytes

nonLeaves

protected ArrayList<TokenizerNode> nonLeaves

leaves

protected ArrayList<TokenizerNode> leaves

leafWriters

protected ArrayList<RowNodeWriter> leafWriters

nonLeafWriters

protected ArrayList<RowNodeWriter> nonLeafWriters

numLeafWriters

protected int numLeafWriters

numNonLeafWriters

protected int numNonLeafWriters

Constructor Detail

RowSectionWriter

public RowSectionWriter()

construct

RowSectionWriter

public RowSectionWriter(PrefixTreeEncoder prefixTreeEncoder)

Method Detail

reconstruct

public void reconstruct(PrefixTreeEncoder prefixTreeEncoder)

reset

public void reset()

compile

public RowSectionWriter compile()

methods

initializeWriter

protected RowNodeWriter initializeWriter(List<RowNodeWriter> list,
                             int index,
                             TokenizerNode builderNode)

writeBytes

public void writeBytes(OutputStream os)
                throws IOException

Throws:

IOException

filterByLeafAndReverse

protected static ArrayList<TokenizerNode> filterByLeafAndReverse(ArrayList<TokenizerNode> ins,
                                              boolean leaves)

static

getNumBytes

public int getNumBytes()

get/set

getNonLeaves

public ArrayList<TokenizerNode> getNonLeaves()

getLeaves

public ArrayList<TokenizerNode> getLeaves()

getNonLeafWriters

public ArrayList<RowNodeWriter> getNonLeafWriters()

getLeafWriters

public ArrayList<RowNodeWriter> getLeafWriters()