javax.mail.util
Class SharedByteArrayInputStream

java.lang.Object
  java.io.InputStream
      java.io.ByteArrayInputStream
          javax.mail.util.SharedByteArrayInputStream

All Implemented Interfaces:

java.io.Closeable, SharedInputStream

public class SharedByteArrayInputStream
extends java.io.ByteArrayInputStream
implements SharedInputStream

A ByteArrayInputStream that implements the SharedInputStream interface, allowing the underlying byte array to be shared between multiple readers.

Since:

JavaMail 1.4

Author:

Bill Shannon

Field Summary

protected int

start Position within shared buffer that this stream starts at.

Fields inherited from class java.io.ByteArrayInputStream

buf, count, mark, pos

Constructor Summary

SharedByteArrayInputStream(byte[] buf)
Create a SharedByteArrayInputStream representing the entire byte array.

SharedByteArrayInputStream(byte[] buf, int offset, int length)
Create a SharedByteArrayInputStream representing the part of the byte array from offset for length bytes.

Method Summary

long	getPosition() Return the current position in the InputStream, as an offset from the beginning of the InputStream.
java.io.InputStream	newStream(long start, long end) Return a new InputStream representing a subset of the data from this InputStream, starting at start (inclusive) up to end (exclusive).

Methods inherited from class java.io.ByteArrayInputStream

available, close, mark, markSupported, read, read, reset, skip

Methods inherited from class java.io.InputStream

read

Methods inherited from class java.lang.Object

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

Field Detail

start

protected int start

Position within shared buffer that this stream starts at.

Constructor Detail

SharedByteArrayInputStream

public SharedByteArrayInputStream(byte[] buf)

Create a SharedByteArrayInputStream representing the entire byte array.

Parameters:

buf - the byte array

SharedByteArrayInputStream

public SharedByteArrayInputStream(byte[] buf,
                                  int offset,
                                  int length)

Create a SharedByteArrayInputStream representing the part of the byte array from offset for length bytes.

Parameters:

buf - the byte array

offset - offset in byte array to first byte to include

length - number of bytes to include

Method Detail

getPosition

public long getPosition()

Return the current position in the InputStream, as an offset from the beginning of the InputStream.

Specified by:

getPosition in interface SharedInputStream

Returns:

the current position

newStream

public java.io.InputStream newStream(long start,
                                     long end)

Return a new InputStream representing a subset of the data from this InputStream, starting at start (inclusive) up to end (exclusive). start must be non-negative. If end is -1, the new stream ends at the same place as this stream. The returned InputStream will also implement the SharedInputStream interface.

Specified by:

newStream in interface SharedInputStream

Parameters:

start - the starting position

end - the ending position + 1

Returns:

the new stream