Partition.PartitionFn (core 2.44.0 API)

Type Parameters:

T - the type of the elements being partitioned

All Superinterfaces:

java.io.Serializable

Enclosing class:

Partition<T>
```
public static interface Partition.PartitionFn<T>
extends java.io.Serializable
```
A function object that chooses an output partition for an element.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`int`	`partitionFor(T elem, int numPartitions)`	Chooses the partition into which to put the given element.

- Method Detail
  - partitionFor
```
int partitionFor(T elem,
                 int numPartitions)
```
    Chooses the partition into which to put the given element.
    
    Parameters:
    
    elem - the element to be partitioned
    
    numPartitions - the total number of partitions (>= 1)
    
    Returns:
    
    index of the selected partition (in the range [0..numPartitions-1])