Wombat MAMA Input Adapter Sample

Contents

Introduction
Importing This Sample into StreamBase Studio
Running This Sample in StreamBase Studio
Sample Location

Introduction

This sample demonstrates the use of the Spotfire Streaming Input Adapter for Wombat MAMA. See Wombat MAMA Input Adapter for details on the structure and use of this adapter.

Importing This Sample into StreamBase Studio

In StreamBase Studio, import this sample with the following steps:

  • From the top-level menu, select File>Import Samples and Community Content.

  • Enter wombat to narrow the list of options.

  • Select Wombat Mama subscribing input adapter from the StreamBase Market Data Adapters category.

  • Click Import Now.

StreamBase Studio creates a project for this sample.

Running This Sample in StreamBase Studio

  1. To get this sample to typecheck, you must specify the location of the MAMA SDK JAR file, which is typically named mamajni.jar. Follow these steps:

    1. In the Project Explorer view, right click this sample's top-level project folder and select Properties from the context menu.

    2. Select Java Build Path in the contents column.

    3. Select the Libraries tab.

    4. Click Add External JARs.

    5. Navigate to the location of and select the mamajni.jar file on your local file system.

    6. Click OK.

    7. Refresh the project's typecheck environment by pressing Ctrl+F5 or by selecting the project folder in the Project Explorer, right clicking, and selecting StreamBase>Refresh Project Typecheck Environment from the context menu.

    The MAMA API loads the transport configuration from a file named mama.properties, which should reside in a directory set in the WOMBAT_PATH environment variable. An example mama.properties file is available in sample_config/mama.properties. The subscribing adapter's Middleware and Transport properties must match the properties set in mama.properties.

    It is strongly recommended that prior to running the StreamBase application, the user has a running mamalistenc client. The configuration and environment properties set in the adapter must match the parameters for the mamalistenc client.

    The sample application is named MamaSub.sbapp. It demonstrates receiving data from a Wombat Feed Handler and emitting the resulting tuples on an output stream.

  2. Open the src/main/eventflow/packageName folder.

  3. Double-click to open the sample application, MamaSub.sbapp.

  4. Double-click MamaOutput adapter. In the Properties view, select the Adapter Properties tab. Set the middleware and transport options to match the values defined in your mama.properties file on WOMBAT_PATH.

  5. In adapter properties the source should be set to the MAMA Source on which you will receive data.

  6. Click the Run button. This opens the Test/Debug perspective and starts the module.

  7. In the Test/Debug Perspective, open the Manual Input view. Enter any symbol you wish to subscribe to.

  8. Open the Output Streams view and observe tuples coming out of MarketDataOut stream.

  9. When done, press F9 or click the Terminate EventFlow Fragment button.

Sample Location

When you load the sample into StreamBase® Studio, Studio copies the sample project's files to your Studio workspace, which is normally part of your home directory, with full access rights.

Important

Load this sample in StreamBase® Studio, and thereafter use the Studio workspace copy of the sample to run and test it, even when running from the command prompt.

Using the workspace copy of the sample avoids permission problems. The default workspace location for this sample is: 

studio-workspace/sample_adapter_embedded_wombat-mama-sub

See Default Installation Directories for the default location of studio-workspace on your system.