EvalFunc.SchemaType
log, pigLogger, reporter, returnType
Constructor and Description |
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HashFNV() |
Modifier and Type | Method and Description |
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Long |
exec(Tuple input)
This callback method must be implemented by all subclasses.
|
List<FuncSpec> |
getArgToFuncMapping()
Allow a UDF to specify type specific implementations of itself.
|
Schema |
outputSchema(Schema input)
Report the schema of the output of this UDF.
|
allowCompileTimeCalculation, finish, getCacheFiles, getInputSchema, getLoadCaster, getLogger, getPigLogger, getReporter, getReturnType, getSchemaName, getSchemaType, getShipFiles, isAsynchronous, needEndOfAllInputProcessing, progress, setEndOfAllInput, setInputSchema, setPigLogger, setReporter, setUDFContextSignature, warn
public Schema outputSchema(Schema input)
EvalFunc
The default implementation interprets the OutputSchema
annotation,
if one is present. Otherwise, it returns null
(no known output schema).
outputSchema
in class EvalFunc<Long>
input
- Schema of the inputpublic Long exec(Tuple input) throws IOException
EvalFunc
exec
in class EvalFunc<Long>
input
- the Tuple to be processed.IOException
public List<FuncSpec> getArgToFuncMapping() throws FrontendException
EvalFunc
getArgToFuncMapping
in class EvalFunc<Long>
FrontendException
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