BlankNode.cs

namespace Waher.Content.Semantic.Model
{
    public class BlankNode : SemanticElement
    {
        public BlankNode()
            : this(null)
        {
        }
 
        public BlankNode(string NodeId)
        {
            this.NodeId = NodeId;
        }
 
        public override bool IsLiteral => false;
 
        public string NodeId { get; set; }
 
        public override object AssociatedObjectValue => this;
 
        public override string ToString()
        {
            return "_:" + this.NodeId.ToString();
        }
 
        public override bool Equals(object obj)
        {
            return obj is BlankNode Typed &&
                Typed.NodeId == this.NodeId;
        }
 
        public override int GetHashCode()
        {
            return this.NodeId.GetHashCode();
        }
 
        public override int CompareTo(object obj)
        {
            if (obj is BlankNode Typed)
                return this.NodeId.CompareTo(Typed.NodeId);
            else
                return base.CompareTo(obj);
        }
    }
}