Class ValueMapper<T>
java.lang.Object
org.apache.storm.streams.operations.mappers.ValueMapper<T>
- Type Parameters:
- T- the value type
- All Implemented Interfaces:
- Serializable,- Function<Tuple,,- T> - TupleValueMapper<T>,- Operation
Extracts a single typed value from a tuple.
- See Also:
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Constructor SummaryConstructorsConstructorDescriptionValueMapper(int index) Constructs a newValueMapperthat extracts the value at index 'i' from a tuple.
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Method Summary
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Constructor Details- 
ValueMapperpublic ValueMapper(int index) Constructs a newValueMapperthat extracts the value at index 'i' from a tuple.- Parameters:
- index- the index
 
 
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Method Details