Package net.didion.jwnl.princeton.file

Class AbstractPrincetonRandomAccessDictionaryFile

java.lang.Object

net.didion.jwnl.dictionary.file.AbstractDictionaryFile

net.didion.jwnl.princeton.file.AbstractPrincetonDictionaryFile

net.didion.jwnl.princeton.file.AbstractPrincetonRandomAccessDictionaryFile

All Implemented Interfaces:

DictionaryFile, RandomAccessDictionaryFile

Direct Known Subclasses:

PrincetonChannelDictionaryFile, PrincetonRandomAccessDictionaryFile

public abstract class AbstractPrincetonRandomAccessDictionaryFile
extends AbstractPrincetonDictionaryFile
implements RandomAccessDictionaryFile

Field Summary

Fields

Modifier and Type	Field	Description
private long	_nextOffset	Used for caching the offset of the line following the line at previousOffset.
private long	_previousOffset	Used for caching the previously accessed file offset.

Fields inherited from interface net.didion.jwnl.dictionary.file.DictionaryFile

COMMENT_HEADER

Constructor Summary

Constructors

Modifier	Constructor	Description
	AbstractPrincetonRandomAccessDictionaryFile()
protected	AbstractPrincetonRandomAccessDictionaryFile(java.lang.String path, POS pos, DictionaryFileType fileType)

Method Summary

Modifier and Type	Method	Description
long	getNextLineOffset()	Get the byte offset of the next line (after the position of the file pointer)
boolean	isPreviousLineOffset(long offset)	Return true if offset is the previous offset.
void	setNextLineOffset(long previousOffset, long nextOffset)	Move the file pointer so that its next line offset is nextOffset

Methods inherited from class net.didion.jwnl.princeton.file.AbstractPrincetonDictionaryFile

makeFilename

Methods inherited from class net.didion.jwnl.dictionary.file.AbstractDictionaryFile

getFile, getFileType, getPOS, open, openFile

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.didion.jwnl.dictionary.file.DictionaryFile

close, getFile, getFileType, getPOS, isOpen, newInstance, open

Methods inherited from interface net.didion.jwnl.dictionary.file.RandomAccessDictionaryFile

getFilePointer, length, read, readLine, seek

Field Detail

_previousOffset

private long _previousOffset

Used for caching the previously accessed file offset.

_nextOffset

private long _nextOffset

Used for caching the offset of the line following the line at previousOffset.

Constructor Detail

AbstractPrincetonRandomAccessDictionaryFile

public AbstractPrincetonRandomAccessDictionaryFile()

AbstractPrincetonRandomAccessDictionaryFile

protected AbstractPrincetonRandomAccessDictionaryFile(java.lang.String path,
                                                      POS pos,
                                                      DictionaryFileType fileType)

Method Detail

setNextLineOffset

public void setNextLineOffset(long previousOffset,
                              long nextOffset)

Description copied from interface: RandomAccessDictionaryFile

Move the file pointer so that its next line offset is nextOffset

Specified by:

setNextLineOffset in interface RandomAccessDictionaryFile

isPreviousLineOffset

public boolean isPreviousLineOffset(long offset)

Description copied from interface: RandomAccessDictionaryFile

Return true if offset is the previous offset.

Specified by:

isPreviousLineOffset in interface RandomAccessDictionaryFile

getNextLineOffset

public long getNextLineOffset()

Description copied from interface: RandomAccessDictionaryFile

Get the byte offset of the next line (after the position of the file pointer)

Specified by:

getNextLineOffset in interface RandomAccessDictionaryFile