Package net.didion.jwnl.princeton.file

Class PrincetonChannelDictionaryFile

java.lang.Object

net.didion.jwnl.dictionary.file.AbstractDictionaryFile

net.didion.jwnl.princeton.file.AbstractPrincetonDictionaryFile

net.didion.jwnl.princeton.file.AbstractPrincetonRandomAccessDictionaryFile

net.didion.jwnl.princeton.file.PrincetonChannelDictionaryFile

All Implemented Interfaces:

DictionaryFile, RandomAccessDictionaryFile

public class PrincetonChannelDictionaryFile
extends AbstractPrincetonRandomAccessDictionaryFile

A RandomAccessDictionaryFile that accesses files named with Princeton's dictionary file naming convention. Uses java.nio.channels.FileChannel for file access.

Field Summary

Fields

Modifier and Type	Field	Description
private java.nio.CharBuffer	_buffer	The random-access file.
private java.nio.channels.FileChannel	_channel

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

COMMENT_HEADER

Constructor Summary

Constructors

Constructor	Description
PrincetonChannelDictionaryFile()
PrincetonChannelDictionaryFile(java.lang.String path, POS pos, DictionaryFileType fileType)

Method Summary

Modifier and Type	Method	Description
void	close()	Close the file
long	getFilePointer()	Get the current position of the file pointer.
boolean	isOpen()	Return true if the file is open
long	length()	Get the length, in bytes, of the file
DictionaryFile	newInstance(java.lang.String path, POS pos, DictionaryFileType fileType)	Create a new instance of the dictionary file
protected void	openFile(java.io.File file)	Open the file at path path
int	read()	Read a byte from the file
java.lang.String	readLine()	Read a line from the file
void	seek(long pos)	Go to postion pos in the file.

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

getNextLineOffset, isPreviousLineOffset, setNextLineOffset

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

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

getFile, getFileType, getPOS, open

Field Detail

_buffer

private java.nio.CharBuffer _buffer

The random-access file.

_channel

private java.nio.channels.FileChannel _channel

Constructor Detail

PrincetonChannelDictionaryFile

public PrincetonChannelDictionaryFile()

PrincetonChannelDictionaryFile

public PrincetonChannelDictionaryFile(java.lang.String path,
                                      POS pos,
                                      DictionaryFileType fileType)

Method Detail

newInstance

public DictionaryFile newInstance(java.lang.String path,
                                  POS pos,
                                  DictionaryFileType fileType)

Description copied from interface: DictionaryFile

Create a new instance of the dictionary file

readLine

public java.lang.String readLine()
                          throws java.io.IOException

Description copied from interface: RandomAccessDictionaryFile

Read a line from the file

Throws:

java.io.IOException

seek

public void seek(long pos)
          throws java.io.IOException

Description copied from interface: RandomAccessDictionaryFile

Go to postion pos in the file.

Throws:

java.io.IOException

getFilePointer

public long getFilePointer()
                    throws java.io.IOException

Description copied from interface: RandomAccessDictionaryFile

Get the current position of the file pointer.

Throws:

java.io.IOException

isOpen

public boolean isOpen()

Description copied from interface: DictionaryFile

Return true if the file is open

close

public void close()

Description copied from interface: DictionaryFile

Close the file

openFile

protected void openFile(java.io.File file)
                 throws java.io.IOException

Description copied from class: AbstractDictionaryFile

Open the file at path path

Specified by:

openFile in class AbstractDictionaryFile

Throws:

java.io.IOException

length

public long length()
            throws java.io.IOException

Description copied from interface: RandomAccessDictionaryFile

Get the length, in bytes, of the file

Throws:

java.io.IOException

read

public int read()
         throws java.io.IOException

Description copied from interface: RandomAccessDictionaryFile

Read a byte from the file

Throws:

java.io.IOException