org.cdlib.xtf.textEngine
Class XtfChunkSource

Object
  ChunkSource
      XtfChunkSource

 class XtfChunkSource
extends ChunkSource

Performs special loading duties for our XTF chunks

Field Summary

private static char	bumpMarker
private static char	nodeMarker

Fields inherited from class ChunkSource

analyzer, chunkBump, chunkCache, chunkCacheSize, chunkOverlap, chunkSize, docNumMap, field, firstChunk, lastChunk, mainDocNum, reader

Constructor Summary

XtfChunkSource(IndexReader reader, DocNumMap docNumMap, int mainDocNum, String field, Analyzer analyzer)
Construct a chunk source

Method Summary

protected Chunk	createChunkTokens(int chunkNum) Create a new storage place for chunk tokens (derived classes may wish to override)
private void	debugChunk(XtfChunk chunk) DEBUGGING ONLY: Print out debugging info for the current chunk, including all of its tokens.
Chunk	loadChunk(int chunkNum) Read in and tokenize a chunk.
protected void	loadText(int chunkNum, Chunk ct) Read the text for the given chunk (derived classes may wish to override)

Methods inherited from class ChunkSource

getChunkOverlap, getChunkSize, inMainDoc

Methods inherited from class Object

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

Field Detail

bumpMarker

private static final char bumpMarker

See Also:

Constant Field Values

nodeMarker

private static final char nodeMarker

See Also:

Constant Field Values

Constructor Detail

XtfChunkSource

XtfChunkSource(IndexReader reader,
               DocNumMap docNumMap,
               int mainDocNum,
               String field,
               Analyzer analyzer)

Construct a chunk source

Method Detail

createChunkTokens

protected Chunk createChunkTokens(int chunkNum)

Create a new storage place for chunk tokens (derived classes may wish to override)

Overrides:

createChunkTokens in class ChunkSource

loadText

protected void loadText(int chunkNum,
                        Chunk ct)
                 throws IOException

Read the text for the given chunk (derived classes may wish to override)

Overrides:

loadText in class ChunkSource

Throws:

IOException

loadChunk

public Chunk loadChunk(int chunkNum)

Read in and tokenize a chunk. Maintains a cache of recently loaded chunks for speed.

Overrides:

loadChunk in class ChunkSource

debugChunk

private void debugChunk(XtfChunk chunk)

DEBUGGING ONLY:

Print out debugging info for the current chunk, including all of its tokens.