KeyGroupsList (Flink : Runtime 2.0.0 API)

All Superinterfaces:

Iterable<Integer>

All Known Implementing Classes:

KeyGroupRange
```
public interface KeyGroupsList
extends Iterable<Integer>
```
This interface offers ordered random read access to multiple key group ids.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`contains(int keyGroupId)`	Returns true, if the given key group id is contained in the list, otherwise false.
`int`	`getKeyGroupId(int idx)`	Returns the id of the keygroup at the given index, where index in interval [0, `getNumberOfKeyGroups()`[.
`int`	`getNumberOfKeyGroups()`	Returns the number of key group ids in the list.

Methods inherited from interface java.lang.Iterable
forEach, iterator, spliterator

- Method Detail
  - getNumberOfKeyGroups
```
int getNumberOfKeyGroups()
```
    Returns the number of key group ids in the list.
  - getKeyGroupId
```
int getKeyGroupId(int idx)
```
    Returns the id of the keygroup at the given index, where index in interval [0, getNumberOfKeyGroups()[.
    
    Parameters:
    
    idx - the index into the list
    
    Returns:
    
    key group id at the given index
  - contains
```
boolean contains(int keyGroupId)
```
    Returns true, if the given key group id is contained in the list, otherwise false.