IBM Streams 4.2.1

Creating an SPL project and an operator model for a C++ operator

An SPL project represents an SPL toolkit. Create an SPL project to store toolkit artifacts that are required for defining a C++ operator. The SPL project also contains the SPL application for running and testing the C++ operator.

Procedure

  1. Create an SPL project.
    1. From the menu bar, click File > New > Project.
    2. In the New Project window, expand IBM Streams Studio, select SPL Project, and then click Next.
    3. In the Project name field, enter a name for the SPL project, and then click Finish.
  2. Create a primitive operator:
    1. In the Project Explorer view, right-click the SPL project that you created.
    2. Click New > C++ Primitive Operator.
    3. If the SPL project name is not preloaded, specify it.
    4. Select an existing namespace or specify a new one. Your operator is created in this namespace.
    5. In the Name field, enter a name for the operator.
    The wizard creates a generic primitive operator in the specified SPL project.

Results

When you create a primitive operator, the C++ Primitive Operator wizard generates the following artifacts. As an SPL application developer, you must edit these resources when you implement the C++ primitive operator.
Operator model
The operator model is an XML file that defines the attributes of the C++ operator. The operator model of the C++ operator is named as operator-name.xml and is generated in the namespace/operator/ directory.
Operator templates
The operator templates are the header and implementation files (*.cgt) that contain the operator logic. These files are generated in the namespace/operator/ directory.
Subdirectories to store the implementation of the C++ operator
Under the impl directory, a set of subdirectories is generated to store the implementation of the C++ operator:
  • impl/bin. This directory is used to store the binary files (*.o files) that are built.
  • impl/include. This directory is used to store the *.hpp files.
  • impl/lib. This directory is used to store the shared libraries (.so files) that are built for the C++ operator.
  • impl/src. This directory is used to store the *.cpp files.

What to do next

Create a C/C++ project or Create a remote C/C++ project.
Parent topic: Setting up for C++ operator development