Create a Message

Digital twins react and respond to messages.

Define a message that data sources will send to instances of this real-time digital twin model (one instance for each data source). The message can be a simple Java bean.

This message represents a temperature change that a Thermostat digital twin instance will react to.

// TemperatureChangeMessage.java

public class TemperatureChangeMessage {
        private final int _temperatureChange;
        public TemperatureChangeMessage() {
                _temperatureChange = 1;
        }
        public TemperatureChangeMessage(int temperatureChange) {
                _temperatureChange = temperatureChange;
        }
        public int getTemperatureChange() {
                return _temperatureChange;
        }
}