File Template Sample

About This Sample

This sample illustrates the use of the Spotfire Streaming File Reader Adapter and Spotfire Streaming File Writer Adapter working together to read a templated file into the system and use the inbound tuple to replace values in the read file and then write that information back out to another file.

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 filet to narrow the list of options.

  • Select File reader input adapter using replacement fields from the StreamBase Standard Adapters category.

  • Click Import Now.

StreamBase Studio creates a project for the sample.

Running This Sample in StreamBase Studio

  1. In the Project Explorer view, open the sample you just loaded.

    If you see red marks on a project folder, wait a moment for the project to load its features.

    If the red marks do not resolve themselves after a minute, select the project, right-click, and select Maven>Update Project from the context menu.

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

  3. Open the TemplatedReadWrite.sbapp file and click the Run button. This opens the SB Test/Debug perspective and starts the module.

  4. In the Manual Input view, fill out the fields available and then click Send Data.

  5. In the Output Streams view, observe tuples emitted on the ReadStatus and Data output streams.

  6. Repeat the process and send as many tuples as desired to test the functionality.

  7. Press F9 or click the Terminate EventFlow Fragment button.

  8. The sample application produces an Output.txt file in your node's temp folder with the results formatted per the Template.txt template file. (Studio will destroy the generated file when exiting. So if you want to see the file, manually change the Default File Name to absolute path, eg: /Users/name/desktop/Output.txt).

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.


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:


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