PatternTimeoutFunction (Flink : Libraries : CEP 2.0.1-cp1 API)

Type Parameters:

IN - Type of the input elements

OUT - Type of the output element

All Superinterfaces:

org.apache.flink.api.common.functions.Function, Serializable
```
public interface PatternTimeoutFunction<IN,OUT>
extends org.apache.flink.api.common.functions.Function, Serializable
```
Base interface for a pattern timeout function. A pattern timeout function is called with a map containing the timed out partial events which can be accessed by their names and the timestamp when the timeout occurred. The names depend on the definition of the Pattern. The timeout method returns exactly one result. If you want to return more than one result, then you have to implement a PatternFlatTimeoutFunction.
```
 PatternStream<IN> pattern = ...;

 DataStream<OUT> result = pattern.select(..., new MyPatternTimeoutFunction());
 
```

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`OUT`	`timeout(Map<String,List<IN>> pattern, long timeoutTimestamp)`	Generates a timeout result from the given map of events and timeout timestamp.

- Method Detail
  - timeout
```
OUT timeout(Map<String,List<IN>> pattern,
            long timeoutTimestamp)
     throws Exception
```
    Generates a timeout result from the given map of events and timeout timestamp. The partial events are identified by their names. Only one resulting element can be generated.
    
    Parameters:
    
    pattern - Map containing the found partial pattern. Events are identified by their names
    
    timeoutTimestamp - Timestamp of the timeout
    
    Returns:
    
    Resulting timeout element
    
    Throws:
    
    Exception - This method may throw exceptions. Throwing an exception will cause the operation to fail and may trigger recovery.