com.partnersoft.io.vfs

Interface VfsRandomAccess

All Superinterfaces:

java.io.DataInput, java.io.DataOutput

All Known Implementing Classes:

AbstractVfsRandomAccess

public interface VfsRandomAccess
extends java.io.DataInput, java.io.DataOutput

A random-access file in a Vfs.

Copyright 2004-2006 Partner Software, Inc.

Author:

Paul Reavis

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Closes the file and releases any associated resources.
VfsFile	getFile() The VfsFile this VfsRandomAccess is accessing.
long	getLength() Gets the length of the file in bytes.
long	getPosition() The current position (aka file pointer), in bytes
boolean	isWritable() True if this is a read-write file.
int	read(byte[] array, int start, int length)
void	setLength(long newLength) Sets the length of the file in bytes.
void	setPosition(long newPosition) Sets the current position (aka file pointer) to the specified byte offset.
void	setWritable(boolean tizit) Attempt to set this to writable.

Methods inherited from interface java.io.DataInput

readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedShort, readUTF, skipBytes

Methods inherited from interface java.io.DataOutput

write, write, write, writeBoolean, writeByte, writeBytes, writeChar, writeChars, writeDouble, writeFloat, writeInt, writeLong, writeShort, writeUTF

Method Detail

getFile

VfsFile getFile()

The VfsFile this VfsRandomAccess is accessing.

isWritable

boolean isWritable()

True if this is a read-write file.

setWritable

void setWritable(boolean tizit)

Attempt to set this to writable.

setPosition

void setPosition(long newPosition)
                 throws java.io.IOException

Sets the current position (aka file pointer) to the specified byte offset.

Parameters:

newPosition - new byte offset position

Throws:

java.io.IOException - if the set fails

getPosition

long getPosition()
                 throws java.io.IOException

The current position (aka file pointer), in bytes

Returns:

current position

Throws:

java.io.IOException

setLength

void setLength(long newLength)
               throws java.io.IOException

Sets the length of the file in bytes. Truncates or extends the file as necessary. Throws an exception if the file is read-only.

Parameters:

newLength - length file will be set to.

Throws:

java.io.IOException

getLength

long getLength()
               throws java.io.IOException

Gets the length of the file in bytes.

Returns:

length of file in bytes

Throws:

java.io.IOException

close

void close()
           throws java.io.IOException

Closes the file and releases any associated resources.

Throws:

java.io.IOException - if closing fails

read

int read(byte[] array,
       int start,
       int length)
         throws java.io.IOException

Throws:

java.io.IOException