org.apache.solr.client.solrj.io.eval

Class CorrelationEvaluator

java.lang.Object

org.apache.solr.client.solrj.io.eval.ComplexEvaluator

org.apache.solr.client.solrj.io.eval.CorrelationEvaluator

All Implemented Interfaces:

Serializable, StreamEvaluator, Expressible

public class CorrelationEvaluator
extends ComplexEvaluator
implements Expressible

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.solr.client.solrj.io.eval.ComplexEvaluator

constructingFactory, nodeId, streamContext, subEvaluators

Constructor Summary

Constructors

Constructor and Description
CorrelationEvaluator(StreamExpression expression, StreamFactory factory)

Method Summary

Modifier and Type	Method and Description
Number	evaluate(Tuple tuple)
Explanation	toExplanation(StreamFactory factory) Returns an explanation about the stream object
StreamExpressionParameter	toExpression(StreamFactory factory)

Methods inherited from class org.apache.solr.client.solrj.io.eval.ComplexEvaluator

getStreamContext, setStreamContext

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.client.solrj.io.eval.StreamEvaluator

evaluateOverContext

Constructor Detail

CorrelationEvaluator

public CorrelationEvaluator(StreamExpression expression,
                            StreamFactory factory)
                     throws IOException

Throws:

IOException

Method Detail

evaluate

public Number evaluate(Tuple tuple)
                throws IOException

Specified by:

evaluate in interface StreamEvaluator

Throws:

IOException

toExpression

public StreamExpressionParameter toExpression(StreamFactory factory)
                                       throws IOException

Specified by:

toExpression in interface Expressible

Overrides:

toExpression in class ComplexEvaluator

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 ComplexEvaluator

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