net.sourceforge.jtds.util

Class BlobBuffer.BlobInputStream

java.lang.Object

java.io.InputStream

net.sourceforge.jtds.util.BlobBuffer.BlobInputStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

Enclosing class:

BlobBuffer

private class BlobBuffer.BlobInputStream
extends java.io.InputStream

An InputStream over the BLOB buffer.

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	open
private int	readPtr

Constructor Summary

Constructors

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

Method Summary

Methods

Modifier and Type	Method and Description
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.

Overrides:

finalize in class java.lang.Object

Throws:

java.lang.Throwable

available

public int available()
              throws java.io.IOException

Returns the number of bytes available to read.

Overrides:

available in class java.io.InputStream

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.

Specified by:

read in class java.io.InputStream

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.

Overrides:

read in class java.io.InputStream

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.

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class java.io.InputStream

Throws:

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