TypeMapping.cs

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using System;
using System.Collections.Generic;
using System.Linq;

namespace Deveel.Data.Mapping {
    public class TypeMapping {
        private readonly Dictionary<string, MemberMapping> memberMappings;

        internal TypeMapping(MappingModel model, Type type, string tableName) {
            Model = model;
            Type = type;
            TableName = tableName;
            memberMappings = new Dictionary<string, MemberMapping>();
        }

        public MappingModel Model { get; private set; }

        public Type Type { get; private set; }

        public string TableName { get; private set; }

        public IEnumerable<MemberMapping> Members {
            get { return memberMappings.Values.AsEnumerable(); }
        }

        public IEnumerable<string> MemberNames {
            get { return memberMappings.Keys.AsEnumerable(); }
        } 

        internal void AddMember(MemberMapping mapping) {
            memberMappings[mapping.MemberName] = mapping;
        }

        public MemberMapping GetMember(string memberName) {
            if (String.IsNullOrEmpty(memberName))
                throw new ArgumentNullException("memberName");

            MemberMapping mapping;
            if (!memberMappings.TryGetValue(memberName, out mapping))
                return null;

            return mapping;
        }

        public bool IsMemberMapped(string memberName) {
            if (String.IsNullOrEmpty(memberName))
                throw new ArgumentNullException("memberName");

            return memberMappings.ContainsKey(memberName);
        }

        public bool IsColumn(string memberName) {
            // TODO: handle also relationships in the TypeMapping
            return IsMemberMapped(memberName);
        }

        public bool IsPrimaryKey(string memberName) {
            var member = GetMember(memberName);
            if (member == null)
                return false;

            return member.PrimaryKey;
        }

        public bool IsUniqueKey(string memberName) {
            var member = GetMember(memberName);
            if (member == null)
                return false;

            return member.UniqueKey;
        }
    }
}