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Add an example of starting an update and waiting until Accepted only #678

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Add an example of starting an update and waiting until Accepted only #678

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13 changes: 13 additions & 0 deletions core/src/main/java/io/temporal/samples/hello/HelloUpdate.java
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Original file line number Diff line number Diff line change
Expand Up @@ -21,10 +21,12 @@

import com.google.common.base.Throwables;
import io.temporal.activity.ActivityOptions;
import io.temporal.client.UpdateHandle;
import io.temporal.client.WorkflowClient;
import io.temporal.client.WorkflowOptions;
import io.temporal.client.WorkflowStub;
import io.temporal.client.WorkflowUpdateException;
import io.temporal.client.WorkflowUpdateStage;
import io.temporal.failure.ApplicationFailure;
import io.temporal.serviceclient.WorkflowServiceStubs;
import io.temporal.worker.Worker;
Expand Down Expand Up @@ -250,6 +252,17 @@ public static void main(String[] args) throws Exception {
WorkflowStub greetingStub = client.newUntypedWorkflowStub(WORKFLOW_ID);
greetingStub.update("addGreeting", int.class, "Temporal");

/*
* Use the untyped stub to start an update, but wait only until it's
* accepted, receiving an update handle in return. Then use the update
* handle to get the result.
*/
UpdateHandle<Integer> updateHandle =
greetingStub.startUpdate(
"addGreeting", WorkflowUpdateStage.ACCEPTED, int.class, "Started asynchronously");

updateHandle.getResultAsync().get();

try {
// The update request will fail on a empty name and the exception will be thrown here.
workflowById.addGreeting("");
Expand Down