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

java.lang.Object
  org.apache.lucene.store.IndexOutput
      org.apache.lucene.store.jdbc.index.JdbcBufferedIndexOutput
          org.apache.lucene.store.jdbc.index.RAMJdbcIndexOutput

All Implemented Interfaces:

JdbcIndexConfigurable

public class RAMJdbcIndexOutput
extends JdbcBufferedIndexOutput

An IndexOutput implemenation that stores all the data written to it in memory, and flushes it to the database when the output is closed.

Useful for small file entries like the segment file.

Author:

kimchy

Field Summary

Fields inherited from class org.apache.lucene.store.jdbc.index.JdbcBufferedIndexOutput

BUFFER_SIZE_SETTING, bufferSize, DEFAULT_BUFFER_SIZE

Constructor Summary

RAMJdbcIndexOutput()

Method Summary

void	close() Closes this stream to further operations.
void	configure(String name, JdbcDirectory jdbcDirectory, JdbcFileEntrySettings settings) Configures the newly created IndexInput or IndexOutput implementations.
void	flushBuffer(byte[] src, int len) Expert: implements buffer write.
void	flushToIndexOutput(IndexOutput indexOutput)
long	length() The number of bytes in the file.
void	seek(long pos) Sets current position in this file, where the next write will occur.

Methods inherited from class org.apache.lucene.store.jdbc.index.JdbcBufferedIndexOutput

flush, getFilePointer, writeByte, writeBytes

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

writeChars, writeInt, writeLong, writeString, writeVInt, writeVLong

Methods inherited from class java.lang.Object

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

Constructor Detail

RAMJdbcIndexOutput

public RAMJdbcIndexOutput()

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

Overrides:

configure in class JdbcBufferedIndexOutput

Parameters:

name - The name of the file entry

jdbcDirectory - The jdbc directory instance

settings - The relevant file entry settings

Throws:

IOException

flushBuffer

public void flushBuffer(byte[] src,
                        int len)

Description copied from class: JdbcBufferedIndexOutput

Expert: implements buffer write. Writes bytes at the current position in the output.

Specified by:

flushBuffer in class JdbcBufferedIndexOutput

Parameters:

src - the bytes to write

len - the number of bytes to write

close

public void close()
           throws IOException

Description copied from class: JdbcBufferedIndexOutput

Closes this stream to further operations.

Overrides:

close in class JdbcBufferedIndexOutput

Throws:

IOException

seek

public void seek(long pos)
          throws IOException

Description copied from class: JdbcBufferedIndexOutput

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

Overrides:

seek in class JdbcBufferedIndexOutput

Throws:

IOException

See Also:

JdbcBufferedIndexOutput.getFilePointer()

length

public long length()

Description copied from class: JdbcBufferedIndexOutput

The number of bytes in the file.

Specified by:

length in class JdbcBufferedIndexOutput

flushToIndexOutput

public void flushToIndexOutput(IndexOutput indexOutput)
                        throws IOException

Throws:

IOException