public abstract class ThresholdingOutputStream extends OutputStream
 This class overrides all OutputStream methods. However, these
 overrides ultimately call the corresponding methods in the underlying output
 stream implementation.
 
NOTE: This implementation may trigger the event before the threshold is actually reached, since it triggers when a pending write operation would cause the threshold to be exceeded.
| Constructor and Description | 
|---|
| ThresholdingOutputStream(int threshold)Constructs an instance of this class which will trigger an event at the
 specified threshold. | 
| Modifier and Type | Method and Description | 
|---|---|
| protected void | checkThreshold(int count)Checks to see if writing the specified number of bytes would cause the
 configured threshold to be exceeded. | 
| void | close()Closes this output stream and releases any system resources associated
 with this stream. | 
| void | flush()Flushes this output stream and forces any buffered output bytes to be
 written out. | 
| protected abstract OutputStream | getStream()Returns the underlying output stream, to which the corresponding
  OutputStreammethods in this class will ultimately delegate. | 
| boolean | isThresholdExceeded()Determines whether or not the configured threshold has been exceeded for
 this output stream. | 
| protected abstract void | thresholdReached()Indicates that the configured threshold has been reached, and that a
 subclass should take whatever action necessary on this event. | 
| void | write(byte[] b)Writes  b.lengthbytes from the specified byte array to this
 output stream. | 
| void | write(byte[] b,
     int off,
     int len)Writes  lenbytes from the specified byte array starting at
 offsetoffto this output stream. | 
| void | write(int b)Writes the specified byte to this output stream. | 
public ThresholdingOutputStream(int threshold)
threshold - The number of bytes at which to trigger an event.public void write(int b)
           throws IOException
write in class OutputStreamb - The byte to be written.IOException - if an error occurs.public void write(byte[] b)
           throws IOException
b.length bytes from the specified byte array to this
 output stream.write in class OutputStreamb - The array of bytes to be written.IOException - if an error occurs.public void write(byte[] b,
         int off,
         int len)
           throws IOException
len bytes from the specified byte array starting at
 offset off to this output stream.write in class OutputStreamb - The byte array from which the data will be written.off - The start offset in the byte array.len - The number of bytes to write.IOException - if an error occurs.public void flush()
           throws IOException
flush in interface Flushableflush in class OutputStreamIOException - if an error occurs.public void close()
           throws IOException
close in interface Closeableclose in interface AutoCloseableclose in class OutputStreamIOException - if an error occurs.public boolean isThresholdExceeded()
true if the threshold has been reached;
         false otherwise.protected void checkThreshold(int count)
                       throws IOException
count - The number of bytes about to be written to the underlying
              output stream.IOException - if an error occurs.protected abstract OutputStream getStream() throws IOException
OutputStream methods in this class will ultimately delegate.IOException - if an error occurs.protected abstract void thresholdReached()
                                  throws IOException
IOException - if an error occurs.Copyright © 2000-2020 Apache Software Foundation. All Rights Reserved.