Package org.apache.nutch.indexer

Class IndexWriters

java.lang.Object

org.apache.nutch.indexer.IndexWriters

public class IndexWriters
extends Object

Creates and caches IndexWriter implementing plugins.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	IndexWriters.IndexWriterWrapper

Method Summary

Modifier and Type	Method	Description
void	close()
void	commit()
void	delete(String key)
String	describe()	Lists the active IndexWriters and their configuration.
static IndexWriters	get(Configuration conf)
void	open(Configuration conf, String name)	Initializes the internal variables of index writers.
void	update(NutchDocument doc)
void	write(NutchDocument doc)

Methods inherited from class java.lang.Object

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

Method Details

get

public static IndexWriters get(Configuration conf)

open

public void open(Configuration conf,
 String name)
          throws IOException

Initializes the internal variables of index writers.

Parameters:

conf - Nutch configuration

name - target name of the IndexWriter to be opened

Throws:

IOException - Some exception thrown by some writer.

write

public void write(NutchDocument doc)
           throws IOException

Throws:

IOException

update

public void update(NutchDocument doc)
            throws IOException

Throws:

IOException

delete

public void delete(String key)
            throws IOException

Throws:

IOException

close

public void close()
           throws IOException

Throws:

IOException

commit

public void commit()
            throws IOException

Throws:

IOException

describe

public String describe()

Lists the active IndexWriters and their configuration.

Returns:

The full description.