Package org.h2.store

Class RangeReader

java.lang.Object

java.io.Reader

org.h2.store.RangeReader

All Implemented Interfaces:

Closeable, AutoCloseable, Readable

public final class RangeReader
extends Reader

Reader that reads only a specified range from the source reader.

Field Summary

Fields inherited from class java.io.Reader

lock

Constructor Summary

Constructors

Constructor	Description
RangeReader(Reader r, long offset, long limit)	Creates new instance of range reader.

Method Summary

Modifier and Type	Method	Description
void	close()
void	mark(int readAheadLimit)
boolean	markSupported()
int	read()
int	read(char[] cbuf, int off, int len)
boolean	ready()
void	reset()
long	skip(long n)

Methods inherited from class java.io.Reader

nullReader, read, read, transferTo

Methods inherited from class java.lang.Object

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

Constructor Details

RangeReader

public RangeReader(Reader r,
 long offset,
 long limit)
            throws IOException

Creates new instance of range reader.

Parameters:

r - source reader

offset - offset of the range

limit - length of the range

Throws:

IOException - on I/O exception during seeking to the specified offset

Method Details

read

public int read()
         throws IOException

Overrides:

read in class Reader

Throws:

IOException

read

public int read(char[] cbuf,
 int off,
 int len)
         throws IOException

Specified by:

read in class Reader

Throws:

IOException

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class Reader

Throws:

IOException

ready

public boolean ready()
              throws IOException

Overrides:

ready in class Reader

Throws:

IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class Reader

mark

public void mark(int readAheadLimit)
          throws IOException

Overrides:

mark in class Reader

Throws:

IOException

reset

public void reset()
           throws IOException

Overrides:

reset in class Reader

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in class Reader

Throws:

IOException