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

Class FieldValueEvaluator

java.lang.Object

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

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

All Implemented Interfaces:

Serializable, StreamEvaluator, Expressible

public class FieldValueEvaluator
extends SourceEvaluator

See Also:

• Serialized Form

Field Summary

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

nodeId, streamContext

Constructor Summary

Constructors

Constructor	Description
FieldValueEvaluator(String fieldName)

Method Summary

Modifier and Type	Method	Description
Object	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.SourceEvaluator

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 Details

FieldValueEvaluator

public FieldValueEvaluator(String fieldName)

Method Details

evaluate

public Object evaluate(Tuple tuple)
                throws IOException

Throws:

IOException

toExpression

public StreamExpressionParameter toExpression(StreamFactory factory)
                                       throws IOException

Throws:

IOException

toExplanation

public Explanation toExplanation(StreamFactory factory)
                          throws IOException

Description copied from interface: Expressible

Returns an explanation about the stream object

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