EvalFunc.SchemaTypelog, pigLogger, reporter, returnType| Constructor and Description |
|---|
HashFNV() |
| Modifier and Type | Method and Description |
|---|---|
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, warnpublic 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
EvalFuncexec in class EvalFunc<Long>input - the Tuple to be processed.IOExceptionpublic List<FuncSpec> getArgToFuncMapping() throws FrontendException
EvalFuncgetArgToFuncMapping in class EvalFunc<Long>FrontendExceptionCopyright © 2007-2017 The Apache Software Foundation