TIBCO ActiveSpaces Operator Sample

Before running you must configure the project to locate and load the ActiveSpaces libraries. In the Package Explorer, right-click on the top-level node of your project and select Build Path | Configure Build Path. On the Libraries tab of the dialog box that appears, if there is no entry for as-common.jar in the list, click the Add External JARs button. This will bring up file browser; navigate to your ActiveSpaces install's lib directory, select as-common.jar and click OK. Back in the Libraries tab, an entry will have been added for as-common.jar.

Expand the as-common.jar node, select Native Library Location and click the Edit button. Enter the correct location of the ActiveSpaces lib subdirectory and click OK, then click OK to dismiss the properties dialog.

Make sure there is a Metaspace and Space currently up and running on the machine to which you wish to connect. The sample includes a configuration file called asAdminCLIScript.txt which can be used to start such a Metaspace and correctly-defined Space on your machine using the following command, run from the $AS_HOME/lib directory:

java -jar as-admin.jar -i <path_to_sample_project>/asAdminCLIScript.txt

In the Package Explorer, double-click to open the activespaces.sbapp application.

Make sure the application is the currently active tab in the EventFlow editor, then click the Run button. This opens the SB Test/Debug perspective and starts the application.

In the Manual Input view, select the InBeginTx input stream.

Enter the following values:

Click Send Data (which will trigger the tuple to be sent to an ActiveSpaces Begin Transaction Operator and cause a transaction to be initiated during which two tuples are sent to the Space as a single transaction), and observe that the OutCommitTx output stream received a tuple with a matching ID value, indicated that the transaction has been committed to the space.

Still in the Manual Input view, select the InBrowse stream and click Send Data (leaving all fields null). This will cause the Space to list all its tuples (the asTuple field contains the current value of each requested tuple) on the OutBrowse stream, terminating the list with a punctuation tuple with its asTuple field set to null.

You may similarly add tuples to the Space using the InPut stream, remove tuples using the InTake stream, etc. Of note is the InControl stream which allows you to send control commands to, for example, disconnect from the Metaspace.

When done, press F9 or click the Stop Running Application button.

Edit sbd.sbconf in the sample's directory to update the <jar> and <library> entries to reflect the correct location of your ActiveSpaces as-common.jar file and lib subdirectory. As shipped, the sbd.sbconf file specifies those paths using the ${AS_HOME} environment variable, since ActiveSpaces recommends using this variable to specify the root location of its product. If this environment variable is correctly set, the sample should work without the need to change the paths. Otherwise, you must edit sbd.sbconf as described above.

Make sure there is a Metaspace and Space currently up and running on the machine to which you wish to connect. The sample includes a configuration file called asAdminCLIScript.txt which can be used to start such a Metaspace and correctly-defined Space on your machine using the following command, run from the $AS_HOME/lib directory:

java -jar as-admin.jar -i <path_to_sample_project>/asAdminCLIScript.txt

Open three terminal windows on UNIX, or three StreamBase Command Prompts on Windows.

In window 1, navigate to the directory location where your project resides, then start StreamBase Server with the application file as its argument. For example:

cd /d "C:\Users\username\Documents\StreamBase Studio X.Y Workspace\sample_activespaces"
sbd -f sbd.sbconf activespaces.sbapp

In window 2, type:

sbc dequeue

This window will display tuples dequeued from the application's output ports.

In window 3, type:

sbc enq InBeginTx

This window is now ready to accept tuples to the InBeginTx stream, typed with CSV syntax.

In window 3, type the following (which will trigger a tuple to be sent to an ActiveSpaces Transaction Begin Operator and cause a transaction to be initiated during which two tuples are sent to the Space as a single transaction):

"ID1"

Observe in window 2 one tuple is emitted on the OutCommitTx stream with a passthrough.id value matching that of the input tuple sent in the previous step, indicating that the transaction was committed:

OutCommitTx,ID1

In window 3, type Ctrl+C to exit sbc, then type:

sbc enq InBrowse

This window is now ready to accept tuples to the InBrowse stream, typed with CSV syntax.

In window 3, type:

null,null

This will cause the Space to list all its tuples (the asTuple field contains the current value of each requested tuple) on the OutBrowse stream, terminating the list with a punctuation tuple with its asTuple field set to null. You can observe these tuples in window 2:

OutBrowse,"1001,John,Doe,Marketing,""Waltham, MA"""

OutBrowse,"1000,Jane,Doe,Engineering,""Waltham, MA"""

OutBrowse,null

In window 2, type Ctrl+C to terminate the dequeuing process. Then type the following command to shut down the server:

sbadmin shutdown