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

Class ColumnEvaluator

java.lang.Object

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

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

All Implemented Interfaces:

Serializable, StreamEvaluator, Expressible

public class ColumnEvaluator
extends SimpleEvaluator
implements Expressible

See Also:

Serialized Form

Field Summary

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

nodeId, streamContext

Constructor Summary

Constructors

Constructor and Description
ColumnEvaluator(StreamExpression expression, StreamFactory factory)

Method Summary

Modifier and Type	Method and Description
List<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.SimpleEvaluator

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

ColumnEvaluator

public ColumnEvaluator(StreamExpression expression,
                       StreamFactory factory)
                throws IOException

Throws:

IOException

Method Detail

evaluate

public List<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

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

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