Contents
This sample uses a Sequence operator to generate unique ID numbers for generic
product orders, allowing for easy querying when updating orders. The Orders input
stream contains the fields name, productNum, quantity, and price. The OrdersChanges input stream
contains the same fields plus an orderID field.
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 all 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
Sequence.sbappfile and click the
Run button. This opens the SB
Test/Debug perspective and starts the module.
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In the Manual Input view, select the Orders input stream.
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Enter
G Washington,12345678,1000, and4.30in the name, productNum, quantity, and price fields, respectively. -
Click and observe that this order has been assigned a field orderID of 1.
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In the Manual Input view, select the OrderChanges input stream.
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Enter
1and1350in the orderID and quantity fields, respectively. -
In the Output Streams view, note that the quantity of the previously entered order has been updated.
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Reselect the Orders input stream.
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Enter
G Washington,23456789,900, and12.50in the name, productNum, quantity, and price fields, respectively. -
Click and observe that this order has been assigned a field orderID of 2.
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Reselect the OrderChanges input stream.
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Enter
2,98765432, and1900in the orderID, productNum, and quantity fields, respectively. -
Click and observe that the second order input has been updated.
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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.