org.apache.pig.builtin
Class Base

java.lang.Object
  extended by org.apache.pig.EvalFunc<Double>
      extended by org.apache.pig.builtin.Base
Direct Known Subclasses:
DoubleBase

public abstract class Base
extends EvalFunc<Double>

base class for math udfs


Field Summary
 
Fields inherited from class org.apache.pig.EvalFunc
log, pigLogger, reporter, returnType
 
Constructor Summary
Base()
           
 
Method Summary
 Schema outputSchema(Schema input)
          Report the schema of the output of this UDF.
 
Methods inherited from class org.apache.pig.EvalFunc
exec, finish, getArgToFuncMapping, getCacheFiles, getLogger, getPigLogger, getReporter, getReturnType, getSchemaName, isAsynchronous, progress, setPigLogger, setReporter, warn
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Base

public Base()
Method Detail

outputSchema

public Schema outputSchema(Schema input)
Description copied from class: EvalFunc
Report the schema of the output of this UDF. Pig will make use of this in error checking, optimization, and planning. The schema of input data to this UDF is provided.

Overrides:
outputSchema in class EvalFunc<Double>
Parameters:
input - Schema of the input
Returns:
Schema of the output


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