props/Props/Models/Search/QueryWordInfo.cs

using System.Collections;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

namespace Props.Models.Search
{
    public class QueryWordInfo
    {
        public int Id { get; set; }

        [Required]
        public string Word { get; set; }
        public uint Hits { get; set; }

        [Required]
        public virtual ISet<QueryWordInfo> Preceding { get; set; }

        [Required]
        public virtual ISet<QueryWordInfo> Following { get; set; }

        public QueryWordInfo()
        {
            this.Preceding = new HashSet<QueryWordInfo>();
            this.Following = new HashSet<QueryWordInfo>();
        }

        public QueryWordInfo(ISet<QueryWordInfo> preceding, ISet<QueryWordInfo> following)
        {
            this.Preceding = preceding;
            this.Following = following;
        }
    }
}