org.rvpf.base.util

Class ProxyReader

Object

Reader

ProxyReader

All Implemented Interfaces:

Closeable, AutoCloseable, Readable

public class ProxyReader
extends Reader

Proxy reader.

This is similar to a FilterReader but allows changing the proxied Reader with setProxied(java.util.Optional<java.io.Reader>) which must be called at least once with a non null argument before calling any other method except getProxied() and close() to avoid a null pointer exception.

Field Summary

Fields inherited from class Reader

lock

Constructor Summary

Constructors

Constructor and Description
ProxyReader()

Method Summary

Modifier and Type	Method and Description
void	close()
Optional<Reader>	getProxied() Gets the proxied reader.
void	mark(int readAheadLimit)
boolean	markSupported()
int	read()
int	read(char[] buffer)
int	read(char[] buffer, int offset, int length)
int	read(CharBuffer target)
boolean	ready()
void	reset()
void	setProxied(Optional<Reader> proxied) Sets the proxied reader.
long	skip(long n)

Methods inherited from class Object

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

Constructor Detail

ProxyReader

public ProxyReader()

Method Detail

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Specified by:

close in class Reader

Throws:

IOException

getProxied

@Nonnull
 @CheckReturnValue
public Optional<Reader> getProxied()

Gets the proxied reader.

Returns:

The optional proxied reader.

mark

public void mark(int readAheadLimit)
          throws IOException

Overrides:

mark in class Reader

Throws:

IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class Reader

read

public int read()
         throws IOException

Overrides:

read in class Reader

Throws:

IOException

read

public int read(char[] buffer)
         throws IOException

Overrides:

read in class Reader

Throws:

IOException

read

public int read(CharBuffer target)
         throws IOException

Specified by:

read in interface Readable

Overrides:

read in class Reader

Throws:

IOException

read

public int read(char[] buffer,
                int offset,
                int length)
         throws IOException

Specified by:

read in class Reader

Throws:

IOException

ready

public boolean ready()
              throws IOException

Overrides:

ready in class Reader

Throws:

IOException

reset

public void reset()
           throws IOException

Overrides:

reset in class Reader

Throws:

IOException

setProxied

public void setProxied(@Nonnull
                       Optional<Reader> proxied)

Sets the proxied reader.

Parameters:

proxied - The proxied reader (empty to cancel).

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class Reader

Throws:

IOException