org.apache.lucene.store

Class WindowsDirectory.WindowsIndexInput

java.lang.Object

org.apache.lucene.store.DataInput

org.apache.lucene.store.IndexInput

org.apache.lucene.store.BufferedIndexInput

org.apache.lucene.store.WindowsDirectory.WindowsIndexInput

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, java.lang.Cloneable, RandomAccessInput

Enclosing class:

WindowsDirectory

static class WindowsDirectory.WindowsIndexInput
extends BufferedIndexInput

Field Summary

Fields

Modifier and Type	Field and Description
private long	fd
(package private) boolean	isClone
(package private) boolean	isOpen
private long	length

Fields inherited from class org.apache.lucene.store.BufferedIndexInput

buffer, BUFFER_SIZE, MERGE_BUFFER_SIZE, MIN_BUFFER_SIZE

Constructor Summary

Constructors

Constructor and Description
WindowsIndexInput(java.nio.file.Path file, int bufferSize)

Method Summary

Modifier and Type	Method and Description
WindowsDirectory.WindowsIndexInput	clone() Returns a clone of this stream.
void	close() Closes the stream to further operations.
long	length() The number of bytes in the file.
protected void	readInternal(byte[] b, int offset, int length) Expert: implements buffer refill.
protected void	seekInternal(long pos) Expert: implements seek.

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

bufferSize, flushBuffer, getBufferSize, getFilePointer, newBuffer, readByte, readByte, readBytes, readBytes, readInt, readInt, readLong, readLong, readShort, readShort, readVInt, readVLong, seek, setBufferSize, slice, wrap

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

getFullSliceDescription, randomAccessSlice, toString

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

readMapOfStrings, readSetOfStrings, readString, readZInt, readZLong, skipBytes

Methods inherited from class java.lang.Object

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

Field Detail

fd

private final long fd

length

private final long length

isClone

boolean isClone

isOpen

boolean isOpen

Constructor Detail

WindowsIndexInput

public WindowsIndexInput(java.nio.file.Path file,
                         int bufferSize)
                  throws java.io.IOException

Throws:

java.io.IOException

Method Detail

readInternal

protected void readInternal(byte[] b,
                            int offset,
                            int length)
                     throws java.io.IOException

Description copied from class: BufferedIndexInput

Expert: implements buffer refill. Reads bytes from the current position in the input.

Specified by:

readInternal in class BufferedIndexInput

Parameters:

b - the array to read bytes into

offset - the offset in the array to start storing bytes

length - the number of bytes to read

Throws:

java.io.IOException

seekInternal

protected void seekInternal(long pos)
                     throws java.io.IOException

Description copied from class: BufferedIndexInput

Expert: implements seek. Sets current position in this file, where the next BufferedIndexInput.readInternal(byte[],int,int) will occur.

Specified by:

seekInternal in class BufferedIndexInput

Throws:

java.io.IOException

See Also:

BufferedIndexInput.readInternal(byte[],int,int)

close

public void close()
           throws java.io.IOException

Description copied from class: IndexInput

Closes the stream to further operations.

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in class IndexInput

Throws:

java.io.IOException

length

public long length()

Description copied from class: IndexInput

The number of bytes in the file.

Specified by:

length in class IndexInput

clone

public WindowsDirectory.WindowsIndexInput clone()

Description copied from class: IndexInput

Returns a clone of this stream.

Clones of a stream access the same data, and are positioned at the same point as the stream they were cloned from.

Expert: Subclasses must ensure that clones may be positioned at different points in the input from each other and from the stream they were cloned from.

Warning: Lucene never closes cloned IndexInputs, it will only call IndexInput.close() on the original object.

If you access the cloned IndexInput after closing the original object, any readXXX methods will throw AlreadyClosedException.

This method is NOT thread safe, so if the current IndexInput is being used by one thread while clone is called by another, disaster could strike.

Overrides:

clone in class BufferedIndexInput