public class ROUND_TO extends EvalFunc<Double>
rounding mode
;
by default, HALF_EVEN
is used.EvalFunc.SchemaType
log, pigLogger, reporter, returnType
Constructor and Description |
---|
ROUND_TO() |
Modifier and Type | Method and Description |
---|---|
boolean |
allowCompileTimeCalculation()
Whether the UDF should be evaluated at compile time if all inputs are constant.
|
Double |
exec(Tuple input)
java level API
|
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.
|
finish, getCacheFiles, getInputSchema, getLoadCaster, getLogger, getPigLogger, getReporter, getReturnType, getSchemaName, getSchemaType, getShipFiles, isAsynchronous, needEndOfAllInputProcessing, progress, setEndOfAllInput, setInputSchema, setPigLogger, setReporter, setUDFContextSignature, warn
public Double exec(Tuple input) throws IOException
exec
in class EvalFunc<Double>
input
- expects a numeric value to round, a number of digits to keep, and an optional rounding mode.IOException
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<Double>
input
- Schema of the inputpublic List<FuncSpec> getArgToFuncMapping() throws FrontendException
EvalFunc
getArgToFuncMapping
in class EvalFunc<Double>
FrontendException
public boolean allowCompileTimeCalculation()
EvalFunc
allowCompileTimeCalculation
in class EvalFunc<Double>
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