UnionParallelismAndForwardEnforcer (Flink : Optimizer 1.19.2-cp2 API)

java.lang.Object
- org.apache.flink.optimizer.traversals.UnionParallelismAndForwardEnforcer

All Implemented Interfaces:

org.apache.flink.util.Visitor<OptimizerNode>
```
public class UnionParallelismAndForwardEnforcer
extends Object
implements org.apache.flink.util.Visitor<OptimizerNode>
```
Enforces that all union nodes have the same parallelism as their successor (there must be only one!) and that the union node and its successor are connected by a forward ship strategy.

- Constructor Summary
  
  Constructors
  Constructor Description
  
  UnionParallelismAndForwardEnforcer()
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  void postVisit(OptimizerNode node)
  
  boolean preVisit(OptimizerNode node)
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - UnionParallelismAndForwardEnforcer
```
public UnionParallelismAndForwardEnforcer()
```
- Method Detail
  - preVisit
```
public boolean preVisit(OptimizerNode node)
```
    Specified by:
    
    preVisit in interface org.apache.flink.util.Visitor<OptimizerNode>
  - postVisit
```
public void postVisit(OptimizerNode node)
```
    Specified by:
    
    postVisit in interface org.apache.flink.util.Visitor<OptimizerNode>