public class PluckTuple extends EvalFunc<Tuple>
EvalFunc.SchemaTypelog, pigLogger, reporter, returnType| Constructor and Description |
|---|
PluckTuple(String prefix) |
PluckTuple(String prefix,
String match) |
| Modifier and Type | Method and Description |
|---|---|
boolean |
allowCompileTimeCalculation()
Whether the UDF should be evaluated at compile time if all inputs are constant.
|
Tuple |
exec(Tuple input)
This callback method must be implemented by all subclasses.
|
Schema |
outputSchema(Schema inputSchema)
Report the schema of the output of this UDF.
|
finish, getArgToFuncMapping, getCacheFiles, getInputSchema, getLoadCaster, getLogger, getPigLogger, getReporter, getReturnType, getSchemaName, getSchemaType, getShipFiles, isAsynchronous, needEndOfAllInputProcessing, progress, setEndOfAllInput, setInputSchema, setPigLogger, setReporter, setUDFContextSignature, warnpublic PluckTuple(String prefix)
public Tuple exec(Tuple input) throws IOException
EvalFuncexec in class EvalFunc<Tuple>input - the Tuple to be processed.IOExceptionpublic Schema outputSchema(Schema inputSchema)
EvalFunc
The default implementation interprets the OutputSchema annotation,
if one is present. Otherwise, it returns null (no known output schema).
outputSchema in class EvalFunc<Tuple>inputSchema - Schema of the inputpublic boolean allowCompileTimeCalculation()
EvalFuncallowCompileTimeCalculation in class EvalFunc<Tuple>Copyright © 2007-2017 The Apache Software Foundation