Class ClobAsciiStream

java.lang.Object

java.io.OutputStream

org.apache.derby.impl.jdbc.ClobAsciiStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

final class ClobAsciiStream
extends 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

Fields

Modifier and Type	Field	Description
private final char[]	buffer
private final Writer	writer

Constructor Summary

Constructors

Constructor	Description
ClobAsciiStream(Writer writer)

Method Summary

Modifier and Type	Method	Description
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 OutputStream

close, flush, nullOutputStream, write

Methods inherited from class Object

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

Field Details

writer

private final Writer writer

buffer

private final char[] buffer

Constructor Details

ClobAsciiStream

ClobAsciiStream(Writer writer)

Method Details

write

public void write(int b)
           throws 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 OutputStream

Parameters:

b - the byte.

Throws:

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 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 OutputStream

Parameters:

b - the data.

off - the start offset in the data.

len - the number of bytes to write.

Throws:

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