org.apache.derby.impl.jdbc
Class ClobAsciiStream

java.lang.Object
  java.io.OutputStream
      org.apache.derby.impl.jdbc.ClobAsciiStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable

final class ClobAsciiStream
extends java.io.OutputStream

Wrap a Writer as an OutputStream to support Clob.setAsciiStream(). Any value written to the OutputStream is a valid ASCII value (0-255 from JDBC 4 spec appendix C2) thus this class simply passes the written values onto the Writer.

Field Summary

private char[]	buffer
private java.io.Writer	writer

Constructor Summary

ClobAsciiStream(java.io.Writer writer)

Method Summary

void	write(byte[] b, int off, int len) Writes len bytes from the specified byte array starting at offset off to this output stream.
void	write(int b) Writes the specified byte to this output stream.

Methods inherited from class java.io.OutputStream

close, flush, write

Methods inherited from class java.lang.Object

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

Field Detail

writer

private final java.io.Writer writer

buffer

private final char[] buffer

Constructor Detail

ClobAsciiStream

ClobAsciiStream(java.io.Writer writer)

Method Detail

write

public void write(int b)
           throws java.io.IOException

Writes the specified byte to this output stream.

The general contract for write is that one byte is written to the output stream. The byte to be written is the eight low-order bits of the argument b. The 24 high-order bits of b are ignored.

Specified by:

write in class java.io.OutputStream

Parameters:

b - the byte.

Throws:

java.io.IOException - if an I/O error occurs. In particular, an IOException may be thrown if the output stream has been closed.

write

public void write(byte[] b,
                  int off,
                  int len)
           throws java.io.IOException

Writes len bytes from the specified byte array starting at offset off to this output stream.

The general contract for write(b, off, len) is that some of the bytes in the array b are written to the output stream in order; element b[off] is the first byte written and b[off+len-1] is the last byte written by this operation.

The write method of OutputStream calls the write method of one argument on each of the bytes to be written out. Subclasses are encouraged to override this method and provide a more efficient implementation.

If b is null, a NullPointerException is thrown.

If off is negative, or len is negative, or off+len is greater than the length of the array b, then an IndexOutOfBoundsException is thrown.

Overrides:

write in class java.io.OutputStream

Parameters:

b - the data.

off - the start offset in the data.

len - the number of bytes to write.

Throws:

java.io.IOException - if an I/O error occurs. In particular, an IOException is thrown if the output stream is closed.