MemorizedResultSetTransformer.AggregateFunction (Jailer Subsetter API)

All Known Implementing Classes:: MemorizedResultSetTransformer.ListAggregation

Enclosing class:: MemorizedResultSetTransformer

public static interface MemorizedResultSetTransformer.AggregateFunction

Functional interface for aggregate functions applied to a group of rows.

Method Summary

Modifier and Type

Method

Description

Object

eval(List<Object[]> group, int columnIndex)

Evaluates the aggregate function over the given group of rows.

Method Details
- eval
  
  Object eval(List<Object[]> group, int columnIndex)
  
  Evaluates the aggregate function over the given group of rows.
  
  Parameters:
  
  group - the group of rows to aggregate
  
  columnIndex - the 0-based column index to aggregate
  
  Returns:
  
  the aggregated value