org.apache.lucene.store.db
Class DbIndexInput

java.lang.Object
  org.apache.lucene.store.IndexInput
      org.apache.lucene.store.db.DbIndexInput

All Implemented Interfaces:

Closeable, Cloneable

public class DbIndexInput
extends IndexInput

Field Summary

protected Block	block
protected DbDirectory	directory
protected File	file
protected long	length
protected long	position

Constructor Summary

protected

DbIndexInput(DbDirectory directory, String name)

Method Summary

Object	clone() Returns a clone of this stream.
void	close() Closes the stream to further operations.
long	getFilePointer() Returns the current position in this file, where the next read will occur.
long	length() The number of bytes in the file.
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.
void	seek(long pos) Sets current position in this file, where the next read will occur.

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

readBytes, readChars, readInt, readLong, readString, readStringStringMap, readVInt, readVLong, setModifiedUTF8StringsMode, skipChars

Methods inherited from class java.lang.Object

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

Field Detail

position

protected long position

length

protected long length

directory

protected DbDirectory directory

block

protected Block block

file

protected File file

Constructor Detail

DbIndexInput

protected DbIndexInput(DbDirectory directory,
                       String name)
                throws IOException

Throws:

IOException

Method Detail

clone

public Object 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.

Overrides:

clone in class IndexInput

close

public void close()
           throws IOException

Description copied from class: IndexInput

Closes the stream to further operations.

Specified by:

close in interface Closeable

Specified by:

close in class IndexInput

Throws:

IOException

length

public long length()

Description copied from class: IndexInput

The number of bytes in the file.

Specified by:

length in class IndexInput

readByte

public byte readByte()
              throws IOException

Description copied from class: IndexInput

Reads and returns a single byte.

Specified by:

readByte in class IndexInput

Throws:

IOException

See Also:

IndexOutput.writeByte(byte)

readBytes

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

Description copied from class: IndexInput

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

Specified by:

readBytes in class IndexInput

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:

IOException

See Also:

IndexOutput.writeBytes(byte[],int)

seek

public void seek(long pos)
          throws IOException

Description copied from class: IndexInput

Sets current position in this file, where the next read will occur.

Specified by:

seek in class IndexInput

Throws:

IOException

See Also:

IndexInput.getFilePointer()

getFilePointer

public long getFilePointer()

Description copied from class: IndexInput

Returns the current position in this file, where the next read will occur.

Specified by:

getFilePointer in class IndexInput

See Also:

IndexInput.seek(long)