com.nt.udc.ei.transport

Class OpenFileInputStream

java.lang.Object

com.nt.udc.ei.transport.OpenFileInputStream

public class OpenFileInputStream
extends java.lang.Object

This class is used for open file input stream.

Since:

JDK 1.2.1

Field Summary

Fields

Modifier and Type	Field and Description
protected java.io.BufferedInputStream	m_br
protected java.io.File	m_file
protected java.io.InputStreamReader	m_fr
protected PosFileInputStream	m_inputStream
protected boolean	m_isActive
protected long	m_mark
protected long	m_pos
protected long	m_timeout Time awaiting for next set of data

Constructor Summary

Constructors

Constructor and Description
OpenFileInputStream(java.io.File file, boolean isActive, long timeout)

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Closes this open file input stream.
long	getFilePos() Get current read position.
void	mark(int readAheadLimit) Marks the current position in the open file input stream.
int	read(byte[] buffer) Reads bytes from this open file input stream.
int	read(byte[] buffer, int offset, int count) Reads "count" bytes from the open file input stream starting at the current read position and stores the bytes read into byte array "buffer" starting at index "offset".
void	reload()
void	reset() Repositions the stream to the last marked position.
long	skip(long count) Skips bytes from this file input stream

Methods inherited from class java.lang.Object

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

Field Detail

m_inputStream

protected PosFileInputStream m_inputStream

m_br

protected java.io.BufferedInputStream m_br

m_fr

protected java.io.InputStreamReader m_fr

m_isActive

protected boolean m_isActive

m_file

protected java.io.File m_file

m_mark

protected long m_mark

m_pos

protected long m_pos

m_timeout

protected long m_timeout

Time awaiting for next set of data

Constructor Detail

OpenFileInputStream

public OpenFileInputStream(java.io.File file,
                   boolean isActive,
                   long timeout)
                    throws java.io.FileNotFoundException

Throws:

java.io.FileNotFoundException

Method Detail

reload

public void reload()
            throws java.lang.Exception

Throws:

java.lang.Exception

close

public void close()
           throws java.io.IOException

Closes this open file input stream.

Throws:

java.io.IOException

getFilePos

public long getFilePos()

Get current read position.

mark

public void mark(int readAheadLimit)
          throws java.io.IOException

Marks the current position in the open file input stream.

Parameters:

readAheadLimit - The maximum read-ahead allowed before the current mark is invalidated.

Throws:

java.io.IOException

read

public int read(byte[] buffer)
         throws java.io.IOException

Reads bytes from this open file input stream. It reads at most buffer.length number of bytes.

Parameters:

buffer - The buffer into which the data is read.

Returns:

The actual number of bytes read. Return -1 if end-of-file has been reached before any bytes have been read.

Throws:

java.io.IOException

read

public int read(byte[] buffer,
       int offset,
       int count)
         throws java.io.IOException

Reads "count" bytes from the open file input stream starting at the current read position and stores the bytes read into byte array "buffer" starting at index "offset".

Parameters:

buffer - The buffer into which the data is read.

offset - The index in buffer in which to start storing the bytes read.

count - The maximum number of bytes to read.

Returns:

The actual number of bytes read. Return -1 if end-of-file has been reached before any bytes have been read.

Throws:

java.io.IOException

reset

public void reset()
           throws java.io.IOException

Repositions the stream to the last marked position.

Throws:

java.io.IOException

skip

public long skip(long count)
          throws java.io.IOException

Skips bytes from this file input stream

Returns:

The actual number of bytes skipped.

Throws:

java.io.IOException