RowSectionWriter (Apache HBase 1.4.11 API)

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)

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()

Class RowSectionWriter

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

prefixTreeEncoder

blockMeta

numBytes

nonLeaves

leaves

leafWriters

nonLeafWriters

numLeafWriters

numNonLeafWriters

Constructor Detail

RowSectionWriter

RowSectionWriter

Method Detail

reconstruct

reset

compile

initializeWriter

writeBytes

filterByLeafAndReverse

getNumBytes

getNonLeaves

getLeaves

getNonLeafWriters

getLeafWriters