Package org.apache.lucene.mockfile

Class FilterInputStream2

java.lang.Object

java.io.InputStream

org.apache.lucene.mockfile.FilterInputStream2

All Implemented Interfaces:

Closeable, AutoCloseable

public class FilterInputStream2
extends InputStream

A FilterInputStream2 contains another InputStream, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.

Note: unlike FilterInputStream this class delegates every method by default. This means to transform read calls, you need to override multiple methods. On the other hand, it is less trappy: a simple implementation that just overrides close will not force bytes to be read one-at-a-time.

Field Summary

Fields

Modifier and Type	Field	Description
protected InputStream	delegate	The underlying InputStream instance.

Constructor Summary

Constructors

Constructor	Description
FilterInputStream2(InputStream delegate)	Construct a FilterInputStream2 based on the specified base stream.

Method Summary

Modifier and Type	Method	Description
int	available()
void	close()
void	mark(int readlimit)
boolean	markSupported()
int	read()
int	read(byte[] b)
int	read(byte[] b, int off, int len)
void	reset()
long	skip(long n)

Methods inherited from class java.io.InputStream

nullInputStream, readAllBytes, readNBytes, readNBytes, transferTo

Methods inherited from class java.lang.Object

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

Field Detail

delegate

protected final InputStream delegate

The underlying InputStream instance.

Constructor Detail

FilterInputStream2

public FilterInputStream2(InputStream delegate)

Construct a FilterInputStream2 based on the specified base stream.

Note that base stream is closed if this stream is closed.

Parameters:

delegate - specified base stream.

Method Detail

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

read

public int read(byte[] b)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

read

public int read(byte[] b,
                int off,
                int len)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class InputStream

Throws:

IOException

available

public int available()
              throws IOException

Overrides:

available in class InputStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class InputStream

Throws:

IOException

mark

public void mark(int readlimit)

Overrides:

mark in class InputStream

reset

public void reset()
           throws IOException

Overrides:

reset in class InputStream

Throws:

IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class InputStream