continuousquery example

This is a simple example showing how to create a continuous query.

Prerequisites

  • Install Apache Geode
  • Build and install Apache Geode Native
  • Apache Geode Native examples, built and installed
  • Set GEODE_HOME to the install directory of Apache Geode

Running

  1. From a command shell, set the current directory to the continuousquery build directory in your example workspace.

    $ cd workspace/examples/build/cpp/continuousquery
    
  2. Run the startserver script to start the Geode cluster with authentication and create a region.

    For Windows cmd:

    $ powershell.exe -File startserver.ps1
    

    For Windows Powershell:

    $ startserver.ps1
    

    For Bash:

    $ ./startserver.sh
    
  3. Execute cpp-continuousquery, expect the following output:

    Executing continuous query
    Create orders
    Putting and changing Order objects in the region
    MyCqListener::OnEvent called with CREATE, key[Order2], value(2, product y, 37)
    MyCqListener::OnEvent called with CREATE, key[Order4], value(4, product z, 102)
    MyCqListener::OnEvent called with CREATE, key[Order6], value(6, product z, 42)
    MyCqListener::OnEvent called with UPDATE, key[Order2], value(2, product y, 45)
    MyCqListener::OnEvent called with DESTROY, key[Order2], value(2, product y, 29)
    MyCqListener::OnEvent called with DESTROY, key[Order6], value is nullptr
    close called
    
  4. Run the stopserver script to gracefully shutdown the Geode cluster.

    For Windows cmd:

    $ powershell.exe -File stopserver.ps1
    

    For Windows Powershell:

    $ stopserver.ps1
    

    For Bash:

    $ ./stopserver.sh