isn/src/isnd/Data/Package.cs

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using isnd.Data.Catalog;
using Newtonsoft.Json;

namespace isnd.Data
{
    public class Package : IObject
    {
        [Key][Required]
        [StringLength(1024)]
        public string Id { get; set; }

        [Required]
        [ForeignKey("Owner")]
        public string OwnerId { get; set; }

        [StringLength(1024)]
        public string Description { get; set; }

        public bool Public { get ; set;}

        [JsonIgnore]
        virtual public ApplicationUser Owner { get; set; }

        [JsonIgnore]

        public virtual List<PackageVersion> Versions { get; set; }

        /// <summary>
        /// Latest package version put, or post, 
        /// or { delete when no more active version }.
        /// </summary>
        /// <value></value>
        [Required][JsonIgnore]
        public long CommitNId { get; set ; }

        [NotMapped]
        public string CommitId { get => CommitNId.ToString(); }

        [ForeignKey("CommitNId")]

        public virtual Commit LatestVersion{ get; set; }
        public DateTime CommitTimeStamp { get; set; }
    }
}