RichPatternFlatSelectFunction (Flink : Libraries : CEP 2.0-preview1 API)

java.lang.Object
- org.apache.flink.api.common.functions.AbstractRichFunction
- - org.apache.flink.cep.RichPatternFlatSelectFunction<IN,OUT>

Type Parameters:

IN - Type of the input elements

OUT - Type of the output element

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.functions.Function, org.apache.flink.api.common.functions.RichFunction, PatternFlatSelectFunction<IN,OUT>
```
public abstract class RichPatternFlatSelectFunction<IN,OUT>
extends org.apache.flink.api.common.functions.AbstractRichFunction
implements PatternFlatSelectFunction<IN,OUT>
```
Rich variant of the PatternFlatSelectFunction. As a RichFunction, it gives access to the RuntimeContext and provides setup and teardown methods: RichFunction.open(OpenContext) and RichFunction.close().

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

RichPatternFlatSelectFunction()

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`abstract void`	`flatSelect(Map<String,List<IN>> pattern, org.apache.flink.util.Collector<OUT> out)`	Generates zero or more resulting elements given a map of detected pattern events.

Methods inherited from class org.apache.flink.api.common.functions.AbstractRichFunction
close, getIterationRuntimeContext, getRuntimeContext, open, setRuntimeContext

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

- Constructor Detail
  - RichPatternFlatSelectFunction
```
public RichPatternFlatSelectFunction()
```
- Method Detail
  - flatSelect
```
public abstract void flatSelect(Map<String,List<IN>> pattern,
                                org.apache.flink.util.Collector<OUT> out)
                         throws Exception
```
    Description copied from interface: PatternFlatSelectFunction
    
    Generates zero or more resulting elements given a map of detected pattern events. The events are identified by their specified names.
    
    Specified by:
    
    flatSelect in interface PatternFlatSelectFunction<IN,OUT>
    
    Parameters:
    
    pattern - Map containing the found pattern. Events are identified by their names.
    
    out - Collector used to output the generated elements
    
    Throws:
    
    Exception - This method may throw exceptions. Throwing an exception will cause the operation to fail and may trigger recovery.