net.sourceforge.jtds.util
Class BlobBuffer.BlobInputStream

java.lang.Object
  java.io.InputStream
      net.sourceforge.jtds.util.BlobBuffer.BlobInputStream

Enclosing class:

BlobBuffer

private class BlobBuffer.BlobInputStream

extends java.io.InputStream

An InputStream over the BLOB buffer.

Field Summary

private boolean	open
private int	readPtr

Fields inherited from class java.io.InputStream

Constructor Summary

BlobBuffer.BlobInputStream(long pos)
Costructs an InputStream object over the BLOB buffer.

Method Summary

int	available() Returns the number of bytes available to read.
void	close() Closes the output stream.
protected void	finalize() Ensures underlying BLOB file can be closed even if user does not close this stream.
int	read() Reads the next byte from the stream.
int	read(byte[] bytes, int offset, int len) Reads a bytes from the stream.

Methods inherited from class java.io.InputStream

mark, markSupported, read, reset, skip

Methods inherited from class java.lang.Object

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

Field Detail

readPtr

private int readPtr

open

private boolean open

Constructor Detail

BlobBuffer.BlobInputStream

public BlobBuffer.BlobInputStream(long pos)
                           throws java.io.IOException

Costructs an InputStream object over the BLOB buffer.

Parameters:

pos - the starting position (from 0)

Throws:

java.io.IOException - if an I/O error occurs

Method Detail

finalize

protected void finalize()
                 throws java.lang.Throwable

Ensures underlying BLOB file can be closed even if user does not close this stream.

Throws:

java.lang.Throwable

available

public int available()
              throws java.io.IOException

Returns the number of bytes available to read.

Throws:

java.io.IOException - if an I/O error occurs

read

public int read()
         throws java.io.IOException

Reads the next byte from the stream.

Returns:

the next byte as an int or -1 if at EOF

Throws:

java.io.IOException - if an I/O error occurs

read

public int read(byte[] bytes,
                int offset,
                int len)
         throws java.io.IOException

Reads a bytes from the stream.

Parameters:

bytes - the byte array to fill

offset - the start position in the byte array

len - the number of bytes to read

Returns:

the number of bytes read or -1 if at end of file

Throws:

java.io.IOException - if an I/O error occurs

close

public void close()
           throws java.io.IOException

Closes the output stream.

Throws:

java.io.IOException - if an I/O error occurs