Package org.apache.lucene.util.fst

Class ReverseRandomAccessReader

java.lang.Object

org.apache.lucene.store.DataInput

org.apache.lucene.util.fst.FST.BytesReader

org.apache.lucene.util.fst.ReverseRandomAccessReader

All Implemented Interfaces:

java.lang.Cloneable

final class ReverseRandomAccessReader
extends FST.BytesReader

Implements reverse read from a RandomAccessInput.

Field Summary

Fields

Modifier and Type	Field	Description
private RandomAccessInput	in
private long	pos

Constructor Summary

Constructors

Constructor	Description
ReverseRandomAccessReader(RandomAccessInput in)

Method Summary

Modifier and Type	Method	Description
long	getPosition()	Get current read position.
byte	readByte()	Reads and returns a single byte.
void	readBytes(byte[] b, int offset, int len)	Reads a specified number of bytes into an array at the specified offset.
boolean	reversed()	Returns true if this reader uses reversed bytes under-the-hood.
void	setPosition(long pos)	Set current read position.
void	skipBytes(long count)	Skip over numBytes bytes.

Methods inherited from class org.apache.lucene.store.DataInput

clone, readBytes, readInt, readLELongs, readLong, readMapOfStrings, readSetOfStrings, readShort, readString, readVInt, readVLong, readZInt, readZLong

Methods inherited from class java.lang.Object

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

Field Detail

in

private final RandomAccessInput in

pos

private long pos

Constructor Detail

ReverseRandomAccessReader

public ReverseRandomAccessReader(RandomAccessInput in)

Method Detail

readByte

public byte readByte()
              throws java.io.IOException

Description copied from class: DataInput

Reads and returns a single byte.

Specified by:

readByte in class DataInput

Throws:

java.io.IOException

See Also:

DataOutput.writeByte(byte)

readBytes

public void readBytes(byte[] b,
                      int offset,
                      int len)
               throws java.io.IOException

Description copied from class: DataInput

Reads a specified number of bytes into an array at the specified offset.

Specified by:

readBytes in class DataInput

Parameters:

b - the array to read bytes into

offset - the offset in the array to start storing bytes

len - the number of bytes to read

Throws:

java.io.IOException

See Also:

DataOutput.writeBytes(byte[],int)

skipBytes

public void skipBytes(long count)

Description copied from class: DataInput

Skip over numBytes bytes. The contract on this method is that it should have the same behavior as reading the same number of bytes into a buffer and discarding its content. Negative values of numBytes are not supported.

Overrides:

skipBytes in class DataInput

getPosition

public long getPosition()

Description copied from class: FST.BytesReader

Get current read position.

Specified by:

getPosition in class FST.BytesReader

setPosition

public void setPosition(long pos)

Description copied from class: FST.BytesReader

Set current read position.

Specified by:

setPosition in class FST.BytesReader

reversed

public boolean reversed()

Description copied from class: FST.BytesReader

Returns true if this reader uses reversed bytes under-the-hood.

Specified by:

reversed in class FST.BytesReader