DeleteObject.cs

using System;
using Waher.Script.Abstraction.Elements;
using Waher.Script.Model;
using Waher.Persistence;
using System.Threading.Tasks;
 
namespace Waher.Script.Persistence.Functions
{
    public class DeleteObject : FunctionOneScalarVariable
    {
        public DeleteObject(ScriptNode Argument, int Start, int Length, Expression Expression)
            : base(Argument, Start, Length, Expression)
        {
        }
 
        public override string FunctionName => nameof(DeleteObject);
 
        public override string[] DefaultArgumentNames => new string[] { "Object" };
 
        public override bool IsAsynchronous => true;
 
        public override IElement EvaluateScalar(IElement Argument, Variables Variables)
        {
            return this.EvaluateScalarAsync(Argument, Variables).Result;
        }
 
        public override async Task<IElement> EvaluateScalarAsync(IElement Argument, Variables Variables)
        {
            await Database.Delete(Argument.AssociatedObjectValue);
            return Argument;
        }
 
    }
}