org.apache.nutch.indexer

Interface IndexWriter

All Superinterfaces:

Configurable, Pluggable

All Known Implementing Classes:

CloudSearchIndexWriter, CSVIndexWriter, DummyIndexWriter, ElasticIndexWriter, ElasticRestIndexWriter, KafkaIndexWriter, RabbitIndexWriter, SolrIndexWriter

public interface IndexWriter
extends Pluggable, Configurable

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	X_POINT_ID The name of the extension point.

Method Summary

Modifier and Type	Method and Description
void	close()
void	commit()
void	delete(java.lang.String key)
java.util.Map<java.lang.String,java.util.Map.Entry<java.lang.String,java.lang.Object>>	describe() Returns Map with the specific parameters the IndexWriter instance can take.
void	open(Configuration conf, java.lang.String name) Deprecated. use open(IndexWriterParams)} instead.
void	open(IndexWriterParams parameters) Initializes the internal variables from a given index writer configuration.
void	update(NutchDocument doc)
void	write(NutchDocument doc)

Methods inherited from interface org.apache.hadoop.conf.Configurable

getConf, setConf

Field Detail

X_POINT_ID

static final java.lang.String X_POINT_ID

The name of the extension point.

Method Detail

open

@Deprecated
void open(Configuration conf,
                      java.lang.String name)
               throws java.io.IOException

Deprecated. use open(IndexWriterParams)} instead.

Throws:

java.io.IOException

open

void open(IndexWriterParams parameters)
   throws java.io.IOException

Initializes the internal variables from a given index writer configuration.

Parameters:

parameters - Params from the index writer configuration.

Throws:

java.io.IOException - Some exception thrown by writer.

write

void write(NutchDocument doc)
    throws java.io.IOException

Throws:

java.io.IOException

delete

void delete(java.lang.String key)
     throws java.io.IOException

Throws:

java.io.IOException

update

void update(NutchDocument doc)
     throws java.io.IOException

Throws:

java.io.IOException

commit

void commit()
     throws java.io.IOException

Throws:

java.io.IOException

close

void close()
    throws java.io.IOException

Throws:

java.io.IOException

describe

java.util.Map<java.lang.String,java.util.Map.Entry<java.lang.String,java.lang.Object>> describe()

Returns Map with the specific parameters the IndexWriter instance can take.

Returns:

The values of each row. It must have the form >.