You can create two kinds of custom StreamBase client applications:
- Enqueue clients
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Applications that feed data into a StreamBase Server, and are sometimes called producer clients. An enqueuer might be a feed from an external source, or part of your testing procedure (to simulate streaming data in a way that
sbfeedsimcannot). - Dequeue clients
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Applications that dequeue data from a StreamBase Server, and are sometimes called consumer clients. You might use dequeue clients to further process StreamBase output in a spreadsheet or display it in a graphical application, or as part of a testing process.
The API Guide includes topics that describe how to create StreamBase enqueue and dequeue clients in each of the supported languages. Other topics provide information about enabling tuple buffering, and a feature called filtered subscribe that allows you to narrow the dequeue result set.
Samples (binaries and source code) of enqueue and dequeue client application are included in the distribution, and are described in Samples Guide. The samples for each language are written to be as similar as possible to each other. We encourage you to walk through them.
The following topics describe developing StreamBase client applications:
For related information, see:
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The Client Sample topic in the Samples Guide
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In addition to client applications, Java programmers can use the StreamBase Java Operator API to add custom functionality within a StreamBase application. For details, see Using the Java Operator API.
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You can also use the StreamBase Monitor API to create a
MonitorListenerclient that captures StreamBase performance statistics. For details, see Developing StreamBase Monitor Applications.