JoinType (Flink : DataStream : API 2.1.0 API)

java.lang.Object
- java.lang.Enum<JoinType>
- - org.apache.flink.datastream.api.extension.join.JoinType

All Implemented Interfaces:

Serializable, Comparable<JoinType>
```
@Experimental
public enum JoinType
extends Enum<JoinType>
```
The type/algorithm of join operation. Currently, we only support regular Join (Non-Window Join). Outer joins require the ability to determine when there is no more data for a specific join key, which is not feasible for non-window join over unbounded streams. Therefore, we have only introduced the INNER join type and plan to introduce more join types as needed in the future.

Enum Constant Summary

Enum Constants
Enum Constant Description

INNER

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static JoinType`	`valueOf(String name)`	Returns the enum constant of this type with the specified name.
`static JoinType[]`	`values()`	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Enum Constant Detail
  - INNER
```
public static final JoinType INNER
```
- Method Detail
  - values
```
public static JoinType[] values()
```
    Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
    for (JoinType c : JoinType.values()) System.out.println(c);
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static JoinType valueOf(String name)
```
    Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
    
    Parameters:
    
    name - the name of the enum constant to be returned.
    
    Returns:
    
    the enum constant with the specified name
    
    Throws:
    
    IllegalArgumentException - if this enum type has no constant with the specified name
    
    NullPointerException - if the argument is null