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

java.lang.Object
  org.apache.lucene.store.IndexOutput
      org.apache.lucene.store.jdbc.index.RAMAndFileJdbcIndexOutput

All Implemented Interfaces:

JdbcIndexConfigurable

Direct Known Subclasses:

OracleRAMAndFileJdbcIndexOutput

public class RAMAndFileJdbcIndexOutput
extends IndexOutput
implements JdbcIndexConfigurable

An IndexOutput implementation that initially writes the data to a memory buffer. Once it exceeds the configured threshold (INDEX_OUTPUT_THRESHOLD_SETTING, will start working with a temporary file, releasing the previous buffer.

Author:

kimchy

Field Summary

static long	DEFAULT_THRESHOLD The default value for the threshold (in bytes).
static String	INDEX_OUTPUT_THRESHOLD_SETTING The threshold setting name.

Constructor Summary

RAMAndFileJdbcIndexOutput()

Method Summary

void	close()
void	configure(String name, JdbcDirectory jdbcDirectory, JdbcFileEntrySettings settings) Configures the newly created IndexInput or IndexOutput implementations.
protected FileJdbcIndexOutput	createFileJdbcIndexOutput()
protected RAMJdbcIndexOutput	createRamJdbcIndexOutput()
void	flush()
long	getFilePointer()
long	length()
void	seek(long pos)
void	writeByte(byte b)
void	writeBytes(byte[] b, int offset, int length)

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

Field Detail

INDEX_OUTPUT_THRESHOLD_SETTING

public static final String INDEX_OUTPUT_THRESHOLD_SETTING

The threshold setting name. See JdbcFileEntrySettings.setLongSetting(String, long). Should be set in bytes.

See Also:

Constant Field Values

DEFAULT_THRESHOLD

public static final long DEFAULT_THRESHOLD

The default value for the threshold (in bytes). Currently 16K.

See Also:

Constant Field Values

Constructor Detail

RAMAndFileJdbcIndexOutput

public RAMAndFileJdbcIndexOutput()

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

writeByte

public void writeByte(byte b)
               throws IOException

Specified by:

writeByte in class IndexOutput

Throws:

IOException

writeBytes

public void writeBytes(byte[] b,
                       int offset,
                       int length)
                throws IOException

Specified by:

writeBytes in class IndexOutput

Throws:

IOException

flush

public void flush()
           throws IOException

Specified by:

flush in class IndexOutput

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in class IndexOutput

Throws:

IOException

getFilePointer

public long getFilePointer()

Specified by:

getFilePointer in class IndexOutput

seek

public void seek(long pos)
          throws IOException

Specified by:

seek in class IndexOutput

Throws:

IOException

length

public long length()
            throws IOException

Specified by:

length in class IndexOutput

Throws:

IOException

createFileJdbcIndexOutput

protected FileJdbcIndexOutput createFileJdbcIndexOutput()

createRamJdbcIndexOutput

protected RAMJdbcIndexOutput createRamJdbcIndexOutput()