net.sourceforge.jtds.util
Class BlobBuffer.AsciiInputStream

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

All Implemented Interfaces:

java.io.Closeable

Enclosing class:

BlobBuffer

private class BlobBuffer.AsciiInputStream
extends java.io.InputStream

An ASCII InputStream over the CLOB buffer.

This class interprets ASCII as anything which has a value below 0x80. This is more rigid than other drivers which allow any character below 0x100 to be converted to returned. The more relaxed coding is useful when dealing with most single byte character sets and if this behaviour is desired, comment out the line indicated in the read method.

Field Summary

private boolean	open
private int	readPtr

Constructor Summary

BlobBuffer.AsciiInputStream(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() Read the next byte from the stream.

Methods inherited from class java.io.InputStream

mark, markSupported, read, 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.AsciiInputStream

public BlobBuffer.AsciiInputStream(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

Read 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

close

public void close()
           throws java.io.IOException

Closes the output stream.

Specified by:

close in interface java.io.Closeable

Overrides:

close in class java.io.InputStream

Throws:

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