org.apache.solr.client.solrj.io.stream

Class TopicStream

java.lang.Object

org.apache.solr.client.solrj.io.stream.TupleStream

org.apache.solr.client.solrj.io.stream.CloudSolrStream

org.apache.solr.client.solrj.io.stream.TopicStream

All Implemented Interfaces:

Closeable, Serializable, AutoCloseable, Expressible, MapSerializable, MapWriter, NavigableObject

public class TopicStream
extends CloudSolrStream
implements Expressible

Since:

6.0.0

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.solr.client.solrj.io.stream.CloudSolrStream

CloudSolrStream.StreamOpener, CloudSolrStream.TupleWrapper

Nested classes/interfaces inherited from class org.apache.solr.client.solrj.io.stream.TupleStream

TupleStream.IgnoreException

Nested classes/interfaces inherited from interface org.apache.solr.common.MapWriter

MapWriter.EntryWriter

Field Summary

Fields

Modifier and Type	Field and Description
protected long	checkpointEvery

Fields inherited from class org.apache.solr.client.solrj.io.stream.CloudSolrStream

cloudSolrClient, collection, comp, eofTuples, fieldMappings, params, solrStreams, streamContext, tuples, zkHost

Constructor Summary

Constructors

Constructor and Description
TopicStream(StreamExpression expression, StreamFactory factory)
TopicStream(String zkHost, String checkpointCollection, String collection, String id, long initialCheckpoint, long checkpointEvery, SolrParams params)

Method Summary

Modifier and Type	Method and Description
List<TupleStream>	children()
void	close() Closes the CloudSolrStream
protected void	constructStreams()
int	getCost()
void	open() Opens the CloudSolrStream
Tuple	read()
Explanation	toExplanation(StreamFactory factory) Returns an explanation about the stream object
StreamExpression	toExpression(StreamFactory factory)

Methods inherited from class org.apache.solr.client.solrj.io.stream.CloudSolrStream

_read, adjustParams, getEofTuples, getSlices, getStreamSort, setFieldMappings, setStreamContext, setTrace

Methods inherited from class org.apache.solr.client.solrj.io.stream.TupleStream

getShards, getShards, getStreamNodeId, writeMap

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.solr.common.MapWriter

jsonStr, toMap

Methods inherited from interface org.apache.solr.common.NavigableObject

_forEachEntry, _forEachEntry, _forEachEntry, _get, _get, _getStr, _getStr, _size

Field Detail

checkpointEvery

protected long checkpointEvery

Constructor Detail

TopicStream

public TopicStream(String zkHost,
                   String checkpointCollection,
                   String collection,
                   String id,
                   long initialCheckpoint,
                   long checkpointEvery,
                   SolrParams params)

TopicStream

public TopicStream(StreamExpression expression,
                   StreamFactory factory)
            throws IOException

Throws:

IOException

Method Detail

toExpression

public StreamExpression toExpression(StreamFactory factory)
                              throws IOException

Specified by:

toExpression in interface Expressible

Overrides:

toExpression in class CloudSolrStream

Throws:

IOException

toExplanation

public Explanation toExplanation(StreamFactory factory)
                          throws IOException

Description copied from interface: Expressible

Returns an explanation about the stream object

Specified by:

toExplanation in interface Expressible

Overrides:

toExplanation in class CloudSolrStream

Parameters:

factory - Stream factory for this, contains information about the function name

Returns:

Explanation about this stream object containing explanations of any child stream objects

Throws:

IOException - throw on any error

children

public List<TupleStream> children()

Overrides:

children in class CloudSolrStream

open

public void open()
          throws IOException

Description copied from class: CloudSolrStream

Opens the CloudSolrStream

Overrides:

open in class CloudSolrStream

Throws:

IOException

close

public void close()
           throws IOException

Description copied from class: CloudSolrStream

Closes the CloudSolrStream

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class CloudSolrStream

Throws:

IOException

read

public Tuple read()
           throws IOException

Overrides:

read in class CloudSolrStream

Throws:

IOException

getCost

public int getCost()

Overrides:

getCost in class TupleStream

constructStreams

protected void constructStreams()
                         throws IOException

Overrides:

constructStreams in class CloudSolrStream

Throws:

IOException