Developing applications that use the R-project Toolkit

Configure the product environment variables by entering the following command:

source product-installation-root-directory/7.2.0.0/bin/streamsprofile.sh

1. Develop your application. To avoid the need to fully qualify the operators, add a use directive in your application.
   • For example, you can add the following clause in your SPL source file:

     
     use com.teracloud.streams.rproject::*;
     

     You can also specify a use clause for individual operators by replacing the asterisk (*) with the operator name. For example:

     
     use com.teracloud.streams.rproject::RScript;
     

2. Configure the SPL compiler to find the toolkit root directory. Use one of the following methods:
   • Set the STREAMS_SPLPATH environment variable to the root directory of a toolkit or multiple toolkits (with : as a separator). For example:

     
     export STREAMS_SPLPATH=$STREAMS_INSTALL/toolkits/com.teracloud.streams.cep
     

   • Specify the -t or --spl-path command parameter when you run the sc command. For example:

     
     sc -t $STREAMS_INSTALL/toolkits/com.teracloud.streams.cep -M MyMain
     

     where MyMain is the name of the SPL main composite.

     Note: These command parameters override the STREAMS_SPLPATH environment variable.

3. Build your application using the sc command.
4. Run the application.
   • You can launch the application in stand-alone mode using the standalone program located in the output directory.
   • You can submit the application in a distributed environment, as a job, to a running Streams instance using the streamtool submitjob command or Streams Console