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

Class SqlStream

java.lang.Object

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

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

All Implemented Interfaces:

Closeable, Serializable, AutoCloseable, Expressible, MapSerializable, MapWriter

public class SqlStream
extends TupleStream
implements Expressible

Since:

7.0.0

See Also:

Serialized Form

Nested Class Summary

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 CloudSolrClient	cloudSolrClient
protected String	collection
protected SolrParams	params
protected StreamContext	streamContext
protected TupleStream	tupleStream
protected String	zkHost

Constructor Summary

Constructors

Constructor and Description
SqlStream(StreamExpression expression, StreamFactory factory)
SqlStream(String zkHost, String collectionName, SolrParams params)

Method Summary

Modifier and Type	Method and Description
List<TupleStream>	children()
void	close()
protected void	constructStream()
StreamComparator	getStreamSort() Return the stream sort - ie, the order in which records are returned
protected void	init(String collectionName, String zkHost, SolrParams params)
void	open()
Tuple	read()
void	setStreamContext(StreamContext context)
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.TupleStream

getCost, 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

toMap

Field Detail

zkHost

protected String zkHost

collection

protected String collection

params

protected SolrParams params

cloudSolrClient

protected transient CloudSolrClient cloudSolrClient

tupleStream

protected transient TupleStream tupleStream

streamContext

protected transient StreamContext streamContext

Constructor Detail

SqlStream

public SqlStream(String zkHost,
                 String collectionName,
                 SolrParams params)
          throws IOException

Parameters:

zkHost - Zookeeper ensemble connection string

collectionName - Name of the collection to operate on

params - Map<String, String> of parameter/value pairs

Throws:

IOException - Something went wrong

This form does not allow specifying multiple clauses, say "fq" clauses, use the form that takes a SolrParams. Transition code can call the preferred method that takes SolrParams by calling CloudSolrStream(zkHost, collectionName, new ModifiableSolrParams(SolrParams.toMultiMap(new NamedList(Map<String, String>)));

SqlStream

public SqlStream(StreamExpression expression,
                 StreamFactory factory)
          throws IOException

Throws:

IOException

Method Detail

toExpression

public StreamExpression toExpression(StreamFactory factory)
                              throws IOException

Specified by:

toExpression in interface Expressible

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

Specified by:

toExplanation in class TupleStream

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

init

protected void init(String collectionName,
                    String zkHost,
                    SolrParams params)
             throws IOException

Throws:

IOException

setStreamContext

public void setStreamContext(StreamContext context)

Specified by:

setStreamContext in class TupleStream

open

public void open()
          throws IOException

Specified by:

open in class TupleStream

Throws:

IOException

children

public List<TupleStream> children()

Specified by:

children in class TupleStream

constructStream

protected void constructStream()
                        throws IOException

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Specified by:

close in class TupleStream

Throws:

IOException

getStreamSort

public StreamComparator getStreamSort()

Return the stream sort - ie, the order in which records are returned

Specified by:

getStreamSort in class TupleStream

read

public Tuple read()
           throws IOException

Specified by:

read in class TupleStream

Throws:

IOException