Package org.apache.cassandra.index.sai.disk.io

Class IndexInputReader

java.lang.Object

org.apache.lucene.store.DataInput

org.apache.lucene.store.IndexInput

org.apache.cassandra.index.sai.disk.io.IndexInputReader

All Implemented Interfaces:

Closeable, AutoCloseable, Cloneable

public class IndexInputReader
extends org.apache.lucene.store.IndexInput

This is a wrapper over a Cassandra RandomAccessReader that provides an IndexInput interface for Lucene classes that need IndexInput. This is an optimisation because the Lucene DataInput reads bytes one at a time whereas the RandomAccessReader is optimised to read multibyte objects faster.

Method Summary

Modifier and Type	Method	Description
void	close()
static IndexInputReader	create(FileHandle handle)
static IndexInputReader	create(RandomAccessReader input)
static IndexInputReader	create(RandomAccessReader input, Runnable doOnClose)
long	getFilePointer()
long	length()
byte	readByte()
void	readBytes(byte[] bytes, int off, int len)
void	seek(long position)
org.apache.lucene.store.IndexInput	slice(String sliceDescription, long offset, long length)

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

clone, getFullSliceDescription, randomAccessSlice, skipBytes, toString

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

readBytes, readFloats, readInt, readInts, readLong, readLongs, readMapOfStrings, readSetOfStrings, readShort, readString, readVInt, readVLong, readZInt, readZLong

Methods inherited from class java.lang.Object

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

Method Details

create

public static IndexInputReader create(RandomAccessReader input)

create

public static IndexInputReader create(RandomAccessReader input,
 Runnable doOnClose)

create

public static IndexInputReader create(FileHandle handle)

readByte

public byte readByte()
              throws IOException

Specified by:

readByte in class org.apache.lucene.store.DataInput

Throws:

IOException

readBytes

public void readBytes(byte[] bytes,
 int off,
 int len)
               throws IOException

Specified by:

readBytes in class org.apache.lucene.store.DataInput

Throws:

IOException

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in class org.apache.lucene.store.IndexInput

getFilePointer

public long getFilePointer()

Specified by:

getFilePointer in class org.apache.lucene.store.IndexInput

seek

public void seek(long position)

Specified by:

seek in class org.apache.lucene.store.IndexInput

length

public long length()

Specified by:

length in class org.apache.lucene.store.IndexInput

slice

public org.apache.lucene.store.IndexInput slice(String sliceDescription,
 long offset,
 long length)

Specified by:

slice in class org.apache.lucene.store.IndexInput