org.sindice.siren.index.codecs.siren10

Class DocsFreqBlockIndexInput.DocsFreqBlockReader

java.lang.Object

org.sindice.siren.index.codecs.block.BlockIndexInput.BlockReader

org.sindice.siren.index.codecs.siren10.DocsFreqBlockIndexInput.DocsFreqBlockReader

Enclosing class:

DocsFreqBlockIndexInput

public class DocsFreqBlockIndexInput.DocsFreqBlockReader
extends BlockIndexInput.BlockReader

Implementation of the BlockReader for the .doc file.

Read and decode blocks containing the document identifiers and the node frequencies. It also decodes the pointers of the associated blocks from the .nod and .pos files and updates the specified Indexs.

Field Summary

Fields

Modifier and Type	Field and Description
protected int	blockSize

Fields inherited from class org.sindice.siren.index.codecs.block.BlockIndexInput.BlockReader

in

Method Summary

Methods

Modifier and Type	Method and Description
int	getFirstDocId() Return the first document identifier of the current block.
int	getLastDocId() Return the last document identifier of the current block.
protected void	initBlock() Init reader for new block
boolean	isExhausted()
int	nextDocument() Decode and return the next document identifier of the current block.
int	nextNodeFreq() Decode and return the next node frequency of the current block.
protected void	readHeader() Read and decode block header
void	setNodeBlockIndex(BlockIndexInput.Index index) Set the Index of the NodBlockIndexInput.
void	setPosBlockIndex(BlockIndexInput.Index index) Set the Index of the PosBlockIndexInput.
protected void	skipData() Skip remaining data in the block and advance input stream pointer.

Methods inherited from class org.sindice.siren.index.codecs.block.BlockIndexInput.BlockReader

getMinimumBufferSize, init, nextBlock, seek

Methods inherited from class java.lang.Object

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

Field Detail

blockSize

protected int blockSize

Method Detail

setNodeBlockIndex

public void setNodeBlockIndex(BlockIndexInput.Index index)
                       throws IOException

Set the Index of the NodBlockIndexInput. The Index is used to update the current file pointer of the NodBlockIndexInput when decoding a block.

Throws:

IOException

setPosBlockIndex

public void setPosBlockIndex(BlockIndexInput.Index index)
                      throws IOException

Set the Index of the PosBlockIndexInput. The Index is used to update the current file pointer of the PosBlockIndexInput when decoding a block.

Throws:

IOException

readHeader

protected void readHeader()
                   throws IOException

Description copied from class: BlockIndexInput.BlockReader

Read and decode block header

Specified by:

readHeader in class BlockIndexInput.BlockReader

Throws:

IOException

skipData

protected void skipData()

Description copied from class: BlockIndexInput.BlockReader

Skip remaining data in the block and advance input stream pointer.

Specified by:

skipData in class BlockIndexInput.BlockReader

getFirstDocId

public int getFirstDocId()

Return the first document identifier of the current block.

getLastDocId

public int getLastDocId()

Return the last document identifier of the current block.

nextDocument

public int nextDocument()
                 throws IOException

Decode and return the next document identifier of the current block.

Throws:

IOException

nextNodeFreq

public int nextNodeFreq()
                 throws IOException

Decode and return the next node frequency of the current block.

Throws:

IOException

isExhausted

public boolean isExhausted()

Specified by:

isExhausted in class BlockIndexInput.BlockReader

initBlock

protected void initBlock()

Description copied from class: BlockIndexInput.BlockReader

Init reader for new block

Specified by:

initBlock in class BlockIndexInput.BlockReader