public interface RedisLookupMapper extends TupleMapper, RedisMapper
RedisLookupMapper is for defining spec. which is used for querying value from Redis and converting response to tuple.
| Modifier and Type | Method and Description |
|---|---|
void |
declareOutputFields(OutputFieldsDeclarer declarer)
declare what are the fields that this code will output.
|
List<Values> |
toTuple(ITuple input,
Object value)
Converts return value from Redis to a list of storm values that can be emitted.
|
getKeyFromTuple, getValueFromTuplegetDataTypeDescriptionList<Values> toTuple(ITuple input, Object value)
Converts return value from Redis to a list of storm values that can be emitted.
input - the input tuple.value - Redis query response value. Can be String, Boolean, Long regarding of data type.void declareOutputFields(OutputFieldsDeclarer declarer)
declare what are the fields that this code will output.
declarer - OutputFieldsDeclarerCopyright © 2021 The Apache Software Foundation. All rights reserved.