RichNotCondition (Flink : Libraries : CEP 1.20.1-cp2 API)

java.lang.Object
- org.apache.flink.cep.pattern.conditions.IterativeCondition<T>
- - org.apache.flink.cep.pattern.conditions.RichIterativeCondition<T>
  - - org.apache.flink.cep.pattern.conditions.RichCompositeIterativeCondition<T>
    - - org.apache.flink.cep.pattern.conditions.RichNotCondition<T>

Type Parameters:

T - Type of the element to filter

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.functions.Function, org.apache.flink.api.common.functions.RichFunction
```
@Internal
public class RichNotCondition<T>
extends RichCompositeIterativeCondition<T>
```
A condition which negates the condition it wraps and returns true if the original condition returns false.

See Also:

Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from class org.apache.flink.cep.pattern.conditions.IterativeCondition
  IterativeCondition.Context<T>

Constructor Summary

Constructors
Constructor Description

RichNotCondition(IterativeCondition<T> original)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`filter(T value, IterativeCondition.Context<T> ctx)`	The filter function that evaluates the predicate.

Methods inherited from class org.apache.flink.cep.pattern.conditions.RichCompositeIterativeCondition
close, getNestedConditions, open, setRuntimeContext

Methods inherited from class org.apache.flink.cep.pattern.conditions.RichIterativeCondition
getIterationRuntimeContext, getRuntimeContext, open

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - RichNotCondition
```
public RichNotCondition(IterativeCondition<T> original)
```
- Method Detail
  - filter
```
public boolean filter(T value,
                      IterativeCondition.Context<T> ctx)
               throws Exception
```
    Description copied from class: IterativeCondition
    
    The filter function that evaluates the predicate.
    IMPORTANT: The system assumes that the function does not modify the elements on which the predicate is applied. Violating this assumption can lead to incorrect results.
    
    Specified by:
    
    filter in class IterativeCondition<T>
    
    Parameters:
    
    value - The value to be tested.
    
    ctx - The IterativeCondition.Context used for the evaluation of the function and provides access to the already accepted events in the pattern (see IterativeCondition.Context.getEventsForPattern(String)).
    
    Returns:
    
    true for values that should be retained, false for values to be filtered out.
    
    Throws:
    
    Exception - This method may throw exceptions. Throwing an exception will cause the operation to fail and may trigger recovery.