org.apache.commons.vfs
Interface RandomAccessContent

All Superinterfaces:

DataInput, DataOutput

All Known Implementing Classes:

AbstractRandomAccessContent, MonitorRandomAccessContent, RamFileRandomAccessContent

public interface RandomAccessContent

extends DataOutput, DataInput

Description

Version:

$Revision: 484946 $ $Date: 2006-12-09 09:18:52 +0100 (Sa, 09 Dez 2006) $

Author:

Mario Ivankovits

Method Summary

void	close() Closes this random access file stream and releases any system resources associated with the stream.
long	getFilePointer() Returns the current offset in this file.
InputStream	getInputStream() get the input stream Notice: If you use seek(long) you have to reget the InputStream
long	length() Returns the length of this file.
void	seek(long pos) Sets the file-pointer offset, measured from the beginning of this file, at which the next read or write occurs.

Methods inherited from interface java.io.DataOutput

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

Methods inherited from interface java.io.DataInput

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

Method Detail

getFilePointer

public long getFilePointer()
                    throws IOException

Returns the current offset in this file.

Returns:

the offset from the beginning of the file, in bytes, at which the next read or write occurs.

Throws:

IOException - if an I/O error occurs.

seek

public void seek(long pos)
          throws IOException

Sets the file-pointer offset, measured from the beginning of this file, at which the next read or write occurs. The offset may be set beyond the end of the file. Setting the offset beyond the end of the file does not change the file length. The file length will change only by writing after the offset has been set beyond the end of the file.
Notice: If you use getInputStream() you have to reget the InputStream after calling seek(long)

Parameters:

pos - the offset position, measured in bytes from the beginning of the file, at which to set the file pointer.

Throws:

IOException - if pos is less than 0 or if an I/O error occurs.

length

public long length()
            throws IOException

Returns the length of this file.

Returns:

the length of this file, measured in bytes.

Throws:

IOException - if an I/O error occurs.

close

public void close()
           throws IOException

Closes this random access file stream and releases any system resources associated with the stream. A closed random access file cannot perform input or output operations and cannot be reopened.

If this file has an associated channel then the channel is closed as well.

Throws:

IOException - if an I/O error occurs.

getInputStream

public InputStream getInputStream()
                           throws IOException

get the input stream
Notice: If you use seek(long) you have to reget the InputStream

Throws:

IOException