ClassifyStream (Solr 9.7.0 core API)

java.lang.Object
- org.apache.solr.client.solrj.io.stream.TupleStream
- - org.apache.solr.handler.ClassifyStream

All Implemented Interfaces:

Closeable, Serializable, AutoCloseable, Expressible, org.apache.solr.common.MapSerializable, org.apache.solr.common.MapWriter, org.apache.solr.common.NavigableObject, org.noggit.JSONWriter.Writable
```
public class ClassifyStream
extends TupleStream
implements Expressible
```
The classify expression retrieves a model trained by the train expression and uses it to classify documents from a stream Syntax: classif(model(...), anyStream(...), field="body")

Since:

6.3.0

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
  org.apache.solr.common.MapWriter.EntryWriter

Field Summary
- Fields inherited from interface org.apache.solr.common.MapWriter
  EMPTY

Constructor Summary

Constructors
Constructor Description

ClassifyStream(StreamExpression expression, StreamFactory factory)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`List<TupleStream>`	`children()`
`void`	`close()`
`StreamComparator`	`getStreamSort()`
`void`	`open()`
`Tuple`	`read()`
`void`	`setStreamContext(StreamContext context)`
`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, write

Methods inherited from interface org.apache.solr.common.NavigableObject
_forEachEntry, _forEachEntry, _forEachEntry, _get, _get, _getStr, _getStr, _size

Constructor Detail

ClassifyStream

public ClassifyStream(StreamExpression expression,
                      StreamFactory factory)
               throws IOException

Throws:: IOException

Method Detail
- setStreamContext
```
public void setStreamContext(StreamContext context)
```
  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