Contents
This sample uses a Filter operator to pass only trades of 10000 shares or more. The input stream contains the fields Symbol and Volume.
This topic describes Filter.sbapp, the Filter operator sample application.
In StreamBase Studio, import this sample with the following steps:
-
From the top menu, click → .
-
Type
operatorto narrow the list of options. -
Select Operator sample group from the Data Constructs and Operators category.
-
Click .
StreamBase Studio creates a single project for all the operator samples.
-
In the Project Explorer, open the sample you just loaded.
-
Open the
src/main/eventflowfolder. -
Open the package folder (most samples contain a single package folder. Open the top-level package folder if your sample contains more than one folder).
-
Open the
Filter.sbappapplication and click the
Run button. This opens the SB Test/Debug perspective and starts the application.
If you see red marks, wait a moment for the project in Studio to load its features.
If red marks do not resolve themselves in a moment, select the project and right-click → from the context menu.
-
In the Output Streams view, select the StockOut output stream
-
In the Manual Input view, select the StockIn input stream
-
Enter
intc10000in the Symbol and Volume fields, respectively -
Click , and observe that data appears in the StockOut stream
-
Enter
9999in the Volume field. -
Click , and observe no new data appears in the StockOut stream.
-
When done, press F9 or click the
Stop Running Application button.
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_operatorSee Default Installation Directories for the default location of studio-workspace on your system.