public class FieldEvaluator extends SimpleEvaluator
nodeId
Constructor and Description |
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FieldEvaluator(String fieldName) |
Modifier and Type | Method and Description |
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Object |
evaluate(Tuple tuple) |
Explanation |
toExplanation(StreamFactory factory)
Returns an explanation about the stream object
|
StreamExpressionParameter |
toExpression(StreamFactory factory) |
public FieldEvaluator(String fieldName)
public StreamExpressionParameter toExpression(StreamFactory factory) throws IOException
IOException
public Explanation toExplanation(StreamFactory factory) throws IOException
Expressible
factory
- Stream factory for this, contains information about the function nameIOException
- throw on any errorCopyright © 2000-2017 Apache Software Foundation. All Rights Reserved.