Contents
This sample uses a Merge operator to interlace trades from a Reuters and the
Interactive Data PlusFeed (formerly Comstock), based on trade time. The input streams
contain the fields Symbol, Volume, PricePS (per share),
Time, and FeedID.
In StreamBase Studio, import this sample with the following steps:
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From the top-level menu, click >.
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Enter
sample groupto narrow the list of options. -
Select Operator sample group from the Data Constructs and Operators category.
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Click .
StreamBase Studio creates a single project for the operator samples.
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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 > from the context menu.
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Open the
src/main/eventflow/com.tibco.sb.sample.operatorfolder. -
Open the
Merge.sbappfile and click the
Run button. This opens the SB
Test/Debug perspective and starts the module.
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In the Output Streams view, select the
MergeOutoutput stream. No output is displayed at this point, but the dequeuer is prepared to receive output. This view eventually shows the output of the application. -
In the Manual Input view, select the
ComstockIninput stream -
Enter
amat,100,23,10, and0in the Symbol, Volume, PricePS, Time, and FeedID fields, respectively.Click , and observe that no output is displayed yet in the Output Streams view.
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Enter
amat,23,10, and1in the Symbol, Volume, PricePS, Time, and FeedID fields, respectively.Click Send Data, and observe that no output is displayed yet in the Output Streams view.
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Select the
ReutersIninput stream. -
Enter
intc,200,21,11, and0in the Symbol, Volume, PricePS, Time, and FeedID fields, respectively.Click Send Data, and observe this data appears in the Output Streams view:
Symbol=amat, Volume=100, PricePS=23.0, Time=10, FeedID=0
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Enter
intc,200,21,11, and1in the Symbol, Volume, PricePS, Time, and FeedID fields, respectively.Click Send Data, and observe this data appears in the Output Streams view.
Symbol=amat, Volume=100, PricePS=23.0, Time=10, FeedID=1
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Enter
msft,100,40,12, and0in the Symbol, Volume, PricePS, Time, and FeedID fields, respectively.Click Send Data, and observe that no further output is displayed yet in the Output Streams view.
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Enter
msft,100,40,12, and1in the Symbol, Volume, PricePS, Time, and FeedID fields, respectively.Click Send Data, and observe that no further output is displayed yet in the Output Streams view.
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Select the ComstockIn input stream.
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Enter
amat,300,24,15, and0in the Symbol, Volume, PricePS, Time, and FeedID fields, respectively.Click Send Data, and observe this data appears in the Output Streams view.
Symbol=intc, Volume=200, PricePS=21.0, Time=11, FeedID=0 Symbol=msft, Volume=100, PricePS=40.0, Time=12, FeedID=0
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Enter
amat,300,24,15, and1in the Symbol, Volume, PricePS, Time, and FeedID fields, respectively.Click Send Data, and observe this data appears in the Output Streams view.
Symbol=intc, Volume=200, PricePS=21.0, Time=11, FeedID=1 Symbol=msft, Volume=100, PricePS=40.0, Time=12, FeedID=1
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When done, press F9 or click the
Terminate EventFlow Fragment 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_operator
See Default Installation
Directories for the default location of studio-workspace on your system.