simple

Class Echo

  • java.lang.Object
    • simple.Echo


  • public class Echo
    extends java.lang.Object
    Sample echo topology application. This Java application builds a simple topology that echos its command line arguments to standard output.
    The application implements the typical pattern of code that declares a topology followed by submission of the topology to a Streams context com.ibm.streamsx.topology.context.StreamsContext.
    This demonstrates passing in values (the command line arguments) into a topology, so that the same application can produce different ouput depending on the passed in values.

    This topology is always executed in embedded mode, within this JVM.
    This may be executed from the samples/java/functional directory as:

    • ant run.echo - Using Apache Ant, this will run in embedded mode.
    • java -cp functionalsamples.jar:../../../com.ibm.streamsx.topology/lib/com.ibm.streamsx.topology.jar:$STREAMS_INSTALL/lib/com.ibm.streams.operator.samples.jar simple.Echo text to echo - Run directly from the command line in embedded mode.
    • An application execution within your IDE once you set the class path to include the correct jars.

    • Constructor Summary

      Constructors 
      Constructor and Description
      Echo() 
    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method and Description
      static void main(java.lang.String[] args)
      Sample Echo topology application.
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • Echo

        public Echo()
    • Method Detail

      • main

        public static void main(java.lang.String[] args)
                         throws java.lang.Exception
        Sample Echo topology application. This Java application builds a simple topology that echos its command line arguments to standard output.
        The application implements the typical pattern of code that declares a topology followed by submission of the topology to a Streams context (@code com.ibm.streamsx.topology.context.StreamsContext}.
        Parameters:
        args - Arguments to be echoed to standard out.
        Throws:
        java.lang.Exception
streamsx.topology @ IBMStreams GitHub