Smalls.MyGenericAggFunction (Calcite 1.18.0 Test API)

Type Parameters:

A - accumulator type

V - value type

R - result type

All Known Implementing Classes:

Smalls.MySum3

Enclosing class:

Smalls
```
private static interface Smalls.MyGenericAggFunction<A,V,R>
```
A generic interface for defining user defined aggregate functions

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`A`	`add(A accumulator, V val)`
`A`	`init()`
`A`	`merge(A accumulator1, A accumulator2)`
`R`	`result(A accumulator)`

Method Detail

init
```
A init()
```

add
```
A add(A accumulator,
      V val)
```

merge

A merge(A accumulator1,
        A accumulator2)

result
```
R result(A accumulator)
```