org.apache.lucene.store.jdbc.index
Class FetchOnOpenJdbcIndexInput

java.lang.Object
  org.apache.lucene.store.IndexInput
      org.apache.lucene.store.jdbc.index.FetchOnOpenJdbcIndexInput

All Implemented Interfaces:

Cloneable, JdbcIndexConfigurable

public class FetchOnOpenJdbcIndexInput
extends IndexInput
implements JdbcIndexConfigurable

An IndexInput implementation that will read all the relevant data from the database when created, and will cache it untill it is closed.

Used for small file entries in the database like the segments file.

Author:

kimchy

Constructor Summary

FetchOnOpenJdbcIndexInput()

Method Summary

void	close()
void	configure(String name, JdbcDirectory jdbcDirectory, JdbcFileEntrySettings settings) Configures the newly created IndexInput or IndexOutput implementations.
long	getFilePointer()
long	length()
byte	readByte()
void	readBytes(byte[] b, int offset, int len)
void	seek(long pos)

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

FetchOnOpenJdbcIndexInput

public FetchOnOpenJdbcIndexInput()

Method Detail

configure

public void configure(String name,
                      JdbcDirectory jdbcDirectory,
                      JdbcFileEntrySettings settings)
               throws IOException

Description copied from interface: JdbcIndexConfigurable

Configures the newly created IndexInput or IndexOutput implementations.

Specified by:

configure in interface JdbcIndexConfigurable

Parameters:

name - The name of the file entry

jdbcDirectory - The jdbc directory instance

settings - The relevant file entry settings

Throws:

IOException

readByte

public byte readByte()
              throws IOException

Specified by:

readByte in class IndexInput

Throws:

IOException

readBytes

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

Specified by:

readBytes in class IndexInput

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in class IndexInput

Throws:

IOException

getFilePointer

public long getFilePointer()

Specified by:

getFilePointer in class IndexInput

seek

public void seek(long pos)
          throws IOException

Specified by:

seek in class IndexInput

Throws:

IOException

length

public long length()

Specified by:

length in class IndexInput