Package org.apache.derby.impl.jdbc
Class LOBOutputStream
- java.lang.Object
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- java.io.OutputStream
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- org.apache.derby.impl.jdbc.LOBOutputStream
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- All Implemented Interfaces:
java.io.Closeable
,java.io.Flushable
,java.lang.AutoCloseable
public class LOBOutputStream extends java.io.OutputStream
This is an output stream built on top of LOBStreamControl. All the write methods are routed to LOBStreamControl.
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Field Summary
Fields Modifier and Type Field Description private boolean
closed
private LOBStreamControl
control
private long
pos
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Constructor Summary
Constructors Constructor Description LOBOutputStream(LOBStreamControl control, long position)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
close()
Closes this output stream and releases any system resources associated with this stream.void
write(byte[] b, int off, int len)
Writeslen
bytes from the specified byte array starting at offsetoff
to this output stream.void
write(int b)
Writes the specified byte to this output stream.
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Field Detail
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closed
private boolean closed
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control
private final LOBStreamControl control
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pos
private long pos
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Constructor Detail
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LOBOutputStream
LOBOutputStream(LOBStreamControl control, long position)
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Method Detail
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write
public void write(int b) throws java.io.IOException
Writes the specified byte to this output stream. The general contract forwrite
is that one byte is written to the output stream. The byte to be written is the eight low-order bits of the argumentb
. The 24 high-order bits ofb
are ignored.Subclasses of
OutputStream
must provide an implementation for this method.- Specified by:
write
in classjava.io.OutputStream
- Parameters:
b
- thebyte
.- Throws:
java.io.IOException
- if an I/O error occurs. In particular, anIOException
may be thrown if the output stream has been closed.
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write
public void write(byte[] b, int off, int len) throws java.io.IOException
Writeslen
bytes from the specified byte array starting at offsetoff
to this output stream. The general contract forwrite(b, off, len)
is that some of the bytes in the arrayb
are written to the output stream in order; elementb[off]
is the first byte written andb[off+len-1]
is the last byte written by this operation.The
write
method ofOutputStream
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
isnull
, aNullPointerException
is thrown.If
off
is negative, orlen
is negative, oroff+len
is greater than the length of the arrayb
, then an IndexOutOfBoundsException is thrown.- Overrides:
write
in classjava.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, anIOException
is thrown if the output stream is closed.
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close
public void close() throws java.io.IOException
Closes this output stream and releases any system resources associated with this stream. The general contract ofclose
is that it closes the output stream. A closed stream cannot perform output operations and cannot be reopened.The
close
method ofOutputStream
does nothing.- Specified by:
close
in interfacejava.lang.AutoCloseable
- Specified by:
close
in interfacejava.io.Closeable
- Overrides:
close
in classjava.io.OutputStream
- Throws:
java.io.IOException
- if an I/O error occurs.
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