ModBusOperation.cs

using System;
using System.Threading.Tasks;
using System.Xml;
using TAG.Simulator.ModBus.Actors;
using TAG.Simulator.ObjectModel;
using TAG.Simulator.ObjectModel.Activities;
using Waher.Networking.Modbus;
using Waher.Script;
 
namespace TAG.Simulator.ModBus.Activities
{
    public abstract class ModBusOperation : ActivityNode
    {
        protected StringAttribute client;
 
        protected DoubleAttribute address;
 
        protected DoubleAttribute register;
 
        public ModBusOperation(ISimulationNode Parent, Model Model)
            : base(Parent, Model)
        {
        }
 
        public override string Namespace => ModBusActor.ComSimModBusNamespace;
 
        public override string SchemaResource => ModBusActor.ComSimModBusSchema;
 
        public override Task FromXml(XmlElement Definition)
        {
            foreach (XmlAttribute Attr in Definition.Attributes)
            {
                switch (Attr.Name)
                {
                    case "client":
                        this.client = new StringAttribute(Attr.Value);
                        break;
 
                    case "address":
                        this.address = new DoubleAttribute(Attr.Name, Attr.Value);
                        break;
 
                    case "register":
                        this.register = new DoubleAttribute(Attr.Name, Attr.Value);
                        break;
                }
            }
 
            return base.FromXml(Definition);
        }
 
        public async Task<ModBusClient> GetClient(Variables Variables)
        {
            object Obj = await this.Model.GetActorObjectAsync(this.client, Variables);
            if (!(Obj is ModBusClient Client))
                throw new Exception("Client ID does not point to a ModBus client.");
 
            return Client;
        }
    }
}