Uses of Class
com.ebay.erl.mobius.core.function.base.GroupFunction

Packages that use GroupFunction
com.ebay.erl.mobius.core.function Provides varies of aggregation or grouping functions such as Counts or Max
com.ebay.erl.mobius.core.function.base Provides base classes for implementing different kinds of aggregation functions. 
com.ebay.erl.mobius.core.mapred Provides Mobius-specific Hadoop classes. 
 

Uses of GroupFunction in com.ebay.erl.mobius.core.function
 

Subclasses of GroupFunction in com.ebay.erl.mobius.core.function
 class Avg
          Computes the average value of the given inputColumn specified in Avg.Avg(Column).
 class Counts
          Counts the number of records of the given inputColumn in a group.
 class Max
          Calculates the maximum value of the given inputColumn in Max.Max(Column) in a group.
 class Medium
          Gets the medium value of the inputColumn in a group.
 class Min
          Calculates the minimum value of the given inputColumn in Min.Min(Column) in a group.
 class Sum
           
 class Top
          Returns up to topX Tuple in a group.
 class Unique
          Returns the unique rows in a group.
 class UniqueCounts
          Computes the number of unique values for the given inputColumns in a group.
 

Uses of GroupFunction in com.ebay.erl.mobius.core.function.base
 

Subclasses of GroupFunction in com.ebay.erl.mobius.core.function.base
 class AggregateFunction
          An aggregate function is a specific type of group function that takes all records in a group, and outputs only one row.
 class SingleInputAggregateFunction
          A single input aggregate function is a special type of aggregate function.
 

Uses of GroupFunction in com.ebay.erl.mobius.core.mapred
 

Fields in com.ebay.erl.mobius.core.mapred with type parameters of type GroupFunction
protected  java.util.List<GroupFunction> DefaultMobiusReducer.multiDatasetGroupFunction
          list of group functions that need columns from multiple datasets as the input.
protected  java.util.Map<java.lang.String,java.util.List<GroupFunction>> DefaultMobiusReducer.singleDatasetGroupFunction
          mapping from a datasetID to a list of group functions that require columns only from that datasetID.