Package org.apache.solr.handler.export

Class ExportWriterStream

java.lang.Object

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

org.apache.solr.handler.export.ExportWriterStream

All Implemented Interfaces:

Closeable, Serializable, AutoCloseable, Expressible, org.apache.solr.common.MapSerializable, org.apache.solr.common.MapWriter, org.apache.solr.common.NavigableObject

public class ExportWriterStream
extends TupleStream
implements Expressible

Stream implementation that helps supporting 'expr' streaming in export writer.

Note: this class is made public only to allow access from ExportHandler, it should be treated as an internal detail of implementation.

See Also:

Serialized Form

WARNING: This API is experimental and might change in incompatible ways in the next release.

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

org.apache.solr.common.MapWriter.EntryWriter

Field Summary

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

EMPTY

Constructor Summary

Constructors

Constructor	Description
ExportWriterStream(StreamExpression expression, StreamFactory factory)

Method Summary

Modifier and Type	Method	Description
List<TupleStream>	children()
void	close()
StreamComparator	getStreamSort()
void	open()
Tuple	read()
void	setStreamContext(StreamContext context)	NOTE: this context must contain an instance of ExportBuffers under the ExportBuffers.EXPORT_BUFFERS_KEY key.
Explanation	toExplanation(StreamFactory factory)
StreamExpressionParameter	toExpression(StreamFactory factory)

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

getCost, 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

append, jsonStr, toMap

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

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

Constructor Detail

ExportWriterStream

public ExportWriterStream(StreamExpression expression,
                          StreamFactory factory)
                   throws IOException

Throws:

IOException

Method Detail

setStreamContext

public void setStreamContext(StreamContext context)

NOTE: this context must contain an instance of ExportBuffers under the ExportBuffers.EXPORT_BUFFERS_KEY key.

Specified by:

setStreamContext in class TupleStream

children

public List<TupleStream> children()

Specified by:

children in class TupleStream

open

public void open()
          throws IOException

Specified by:

open in class TupleStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in class TupleStream

Throws:

IOException

read

public Tuple read()
           throws IOException

Specified by:

read in class TupleStream

Throws:

IOException

getStreamSort

public StreamComparator getStreamSort()

Specified by:

getStreamSort in class TupleStream

toExpression

public StreamExpressionParameter toExpression(StreamFactory factory)
                                       throws IOException

Specified by:

toExpression in interface Expressible

Throws:

IOException

toExplanation

public Explanation toExplanation(StreamFactory factory)
                          throws IOException

Specified by:

toExplanation in interface Expressible

Specified by:

toExplanation in class TupleStream

Throws:

IOException