public class LAST_INDEX_OF extends EvalFunc<Integer>
A = load 'mydata' as (name);
B = foreach A generate LASTINDEXOF(name, ",");
EvalFunc.SchemaType
log, pigLogger, reporter, returnType
Constructor and Description |
---|
LAST_INDEX_OF() |
Modifier and Type | Method and Description |
---|---|
boolean |
allowCompileTimeCalculation()
Whether the UDF should be evaluated at compile time if all inputs are constant.
|
Integer |
exec(Tuple input)
Finds the last location of a substring in a given string.
|
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 Integer exec(Tuple input) throws IOException
exec
in class EvalFunc<Integer>
input
- tuple: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<Integer>
input
- Schema of the inputpublic List<FuncSpec> getArgToFuncMapping() throws FrontendException
EvalFunc
getArgToFuncMapping
in class EvalFunc<Integer>
FrontendException
public boolean allowCompileTimeCalculation()
EvalFunc
allowCompileTimeCalculation
in class EvalFunc<Integer>
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