Package org.apache.flink.cep

Class RichPatternFlatSelectFunction<IN,OUT>

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:

  • Constructor Summary

    Constructors
    Constructor
    Description
    RichPatternFlatSelectFunction()
     

  • Method Summary

    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 Details

    • RichPatternFlatSelectFunction

      public RichPatternFlatSelectFunction()

  • Method Details

    • 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.