FieldNode.cs

using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using System.Xml;
using TAG.Simulator.ObjectModel.Values;
using Waher.Content.Xml;
using Waher.Script;
using Waher.Things.SensorData;
 
namespace TAG.Simulator.XMPP.IoT.Activities.Fields
{
    public abstract class FieldNode : NodeReference, IValueRecipient
    {
        private IValue value = null;
        private string name;
        private Waher.Things.SensorData.FieldType type;
        private FieldQoS qos;
        private bool writable;
 
        public FieldNode(ISimulationNode Parent, Model Model)
            : base(Parent, Model)
        {
        }
 
        public IValue Value => this.value;
 
        public string Name => this.name;
 
        public Waher.Things.SensorData.FieldType Type => this.type;
 
        public FieldQoS QualityOfService => this.qos;
 
        public bool Writable => this.writable;
 
        public override Task FromXml(XmlElement Definition)
        {
            this.name = XML.Attribute(Definition, "name");
            this.type = (Waher.Things.SensorData.FieldType)XML.Attribute(Definition, "type", Waher.Things.SensorData.FieldType.Momentary);
            this.qos = (FieldQoS)XML.Attribute(Definition, "qos", FieldQoS.AutomaticReadout);
            this.writable = XML.Attribute(Definition, "writable", false);
 
            return base.FromXml(Definition);
        }
 
        public void Register(IValue Value)
        {
            if (this.value is null)
                this.value = Value;
            else
                throw new Exception("Field node already has a value defined.");
        }
 
        public abstract Task AddFields(LinkedList<Field> Fields, Variables Variables);
    }
}