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

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

All Implemented Interfaces:

JdbcIndexConfigurable

Direct Known Subclasses:

OracleRAMJdbcIndexOutput

public class RAMJdbcIndexOutput
extends AbstractJdbcIndexOutput

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.AbstractJdbcIndexOutput

jdbcDirectory, name

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

BUFFER_SIZE_SETTING

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

bufferSize, DEFAULT_BUFFER_SIZE

Constructor Summary

RAMJdbcIndexOutput()

Method Summary

void	configure(String name, JdbcDirectory jdbcDirectory, JdbcFileEntrySettings settings) Configures the newly created IndexInput or IndexOutput implementations.
protected void	doAfterClose()
void	flushBuffer(byte[] src, int offset, int len) Expert: implements buffer write.
void	flushToIndexOutput(IndexOutput indexOutput)
long	length() The number of bytes in the file.
protected InputStream	openInputStream()
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.AbstractJdbcIndexOutput

close, doBeforeClose

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

flush, getFilePointer, initBuffer, writeByte, writeBytes

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

copyBytes, setLength, writeBytes, writeChars, 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 AbstractJdbcIndexOutput

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 offset,
                        int len)

Description copied from class: ConfigurableBufferedIndexOutput

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

Specified by:

flushBuffer in class ConfigurableBufferedIndexOutput

Parameters:

src - the bytes to write

offset - the offset in the byte array

len - the number of bytes to write

openInputStream

protected InputStream openInputStream()
                               throws IOException

Specified by:

openInputStream in class AbstractJdbcIndexOutput

Throws:

IOException

doAfterClose

protected void doAfterClose()
                     throws IOException

Overrides:

doAfterClose in class AbstractJdbcIndexOutput

Throws:

IOException

seek

public void seek(long pos)
          throws IOException

Description copied from class: ConfigurableBufferedIndexOutput

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

Overrides:

seek in class ConfigurableBufferedIndexOutput

Throws:

IOException

See Also:

ConfigurableBufferedIndexOutput.getFilePointer()

length

public long length()

Description copied from class: ConfigurableBufferedIndexOutput

The number of bytes in the file.

Specified by:

length in class ConfigurableBufferedIndexOutput

flushToIndexOutput

public void flushToIndexOutput(IndexOutput indexOutput)
                        throws IOException

Throws:

IOException