f22fadaac1
The activity I removed would never have been executed, because it is not connected from either of the IfElse branches. Since this is Elsa 1.x, I've fixed it using the cheapest/quickest possible solution which is to just remove the misleading part of the sample.
57 lines
2.4 KiB
C#
57 lines
2.4 KiB
C#
using Elsa;
|
|
using Elsa.Activities.Console.Activities;
|
|
using Elsa.Activities.ControlFlow.Activities;
|
|
using Elsa.Expressions;
|
|
using Elsa.Scripting.JavaScript;
|
|
using Elsa.Services;
|
|
using Elsa.Services.Models;
|
|
using Sample25.Activities;
|
|
|
|
namespace Sample25
|
|
{
|
|
public class DataProcessingWorkflow : IWorkflow
|
|
{
|
|
public void Build(IWorkflowBuilder builder)
|
|
{
|
|
builder
|
|
.StartWith<WriteLine>(x => x.TextExpression = new LiteralExpression("Waiting for sensor input."))
|
|
|
|
// Fork execution into two branches to wait for external stimuli from the two channels in parallel.
|
|
.Then<Fork>(
|
|
fork => fork.Branches = new[] { "Channel 1", "Channel 2" },
|
|
fork =>
|
|
{
|
|
fork
|
|
.When("Channel 1")
|
|
.Then<Channel>(x => x.SensorId = "Sensor1").WithName("Channel1")
|
|
.Then("Subtract"); // Connect to Subtract activity.
|
|
|
|
fork
|
|
.When("Channel 2")
|
|
.Then<Channel>(x => x.SensorId = "Sensor2").WithName("Channel2")
|
|
.Then("Subtract"); // Connect to Subtract activity.
|
|
})
|
|
|
|
// Subtract the specified values.
|
|
.Then<Subtract>(x => x.Values = new JavaScriptExpression<double[]>("[Channel1.Value, Channel2.Value]")).WithName("Subtract")
|
|
|
|
// Calculate the absolute value of the subtraction.
|
|
.Then<Absolute>(x => x.ValueExpression = new JavaScriptExpression<double>("(Subtract.Result)")).WithName("Absolute")
|
|
|
|
// Compare the absolute value against a constant threshold, and write the appropriate output.
|
|
.Then<IfElse>(
|
|
x => x.ConditionExpression = new JavaScriptExpression<bool>("(Absolute.Result) > 0.5"),
|
|
ifElse =>
|
|
{
|
|
ifElse
|
|
.When(OutcomeNames.False)
|
|
.Then<WriteLine>(x => x.TextExpression = new LiteralExpression("Data does not exceed threshold (FALSE)"));
|
|
|
|
ifElse
|
|
.When(OutcomeNames.True)
|
|
.Then<WriteLine>(x => x.TextExpression = new LiteralExpression("Data exceeds threshold (TRUE)"));
|
|
});
|
|
}
|
|
}
|
|
}
|