标签:foreach null pen get cti creat rip table type
实体映射时,遇到复杂类型,可选择下述方法处理:
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示例: IPInfo使用了owned,对IPEndPoint使用自定义序列化,对VersionInfo使用JSON序列化
public class Controller : IController
????{
????public int SN { get; set; }
???? ?
????public IPInfo IPInfo { get; set; } = IPInfo.Default;
???? ?
????[Column(TypeName = "string")]
????public VersionInfo VersionInfo { get; set; } = VersionInfo.Default;
???? [Column(TypeName = "string")]
????public System.Net.IPEndPoint ServerIPEndPoint { get; set; } = new System.Net.IPEndPoint(System.Net.IPAddress.Any, 0);
???? ?
????public DateTime Time { get; set; } = DateTime.Now;
}
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[Owned]
????public class IPInfo
????{
????public static IPInfo Default { get; } = new IPInfo()
????{
????????IP="192.168.0.254"
????};
????public string IP { get; set; }
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????public ushort Port { get; set; } = 60000;
????public string Mac { get; set; }
????public string Mask { get; set; } = "255.255.255.0";
????public string Gateway { get; set; } = "192.168.0.1";
????public bool Force { get; set; }
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????}
@@#
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自定义序列化
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public class IPEndPointConverter : ValueConverter<System.Net.IPEndPoint, string>
????{
????public IPEndPointConverter(ConverterMappingHints mappingHints = null)
????????: base(
???????? v => v.ToString(),
???????? v => System.Net.IPEndPoint.Parse(v),
???????? mappingHints)
????{
????}
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????public static ValueConverterInfo DefaultInfo { get; }
????????= new ValueConverterInfo(typeof(System.Net.IPEndPoint), typeof(string), i => new IPEndPointConverter(i.MappingHints));
????}
????public class JsonConverter<T> : ValueConverter<T, string>
????{
????public JsonConverter() : this(null)
????{
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????}
???? ?
????public JsonConverter(ConverterMappingHints mappingHints = null)
????????: base(
???????? v => v.SerializeObject(),
???????? v => v.Deserialize<T>(),
???????? mappingHints)
????{
????}
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????public static ValueConverterInfo DefaultInfo { get; }
????????= new ValueConverterInfo(typeof(T), typeof(string), i => new JsonConverter<T>(i.MappingHints));
}
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protected override void OnModelCreating(ModelBuilder modelBuilder)
????{
????????base.OnModelCreating(modelBuilder);
????????void aa<T>() where T : class
????????{
????????modelBuilder.Entity<T>().ToTable(typeof(T).Name.ToLower());
????????}
???????? ?
????????aa<User>();
????????aa<Device>();
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????????foreach (var entityType in modelBuilder.Model.GetEntityTypes())
????????{
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????????foreach (var property in entityType.GetProperties())
????????{
????????????if (property.ClrType.IsValueType && !property.ClrType.IsGenericType)
????????????continue;
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????????????switch (property.ClrType.Name)
????????????{
????????????case nameof(System.Net.IPEndPoint):
????????????????property.SetValueConverter(new IPEndPointConverter()); //演示 owned效果,仅限复杂类型是由简单类型组成的,没有内嵌复杂类型
????????????????break;
????????????case nameof(String):
????????????????break;
????????????default:
????????????????Type genType = typeof(JsonConverter<>).MakeGenericType(property.ClrType);
????????????????ValueConverter obj = Activator.CreateInstance(genType) as ValueConverter;
????????????????property.SetValueConverter(obj);
???? ???????? break;
????????????}
?
????????}
????????}
?
????}
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@@#
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标签:foreach null pen get cti creat rip table type
原文地址:https://www.cnblogs.com/QinQouShui/p/12367563.html