110 lines
3.5 KiB
C#
110 lines
3.5 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Collections.Specialized;
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using System.ComponentModel.DataAnnotations.Schema;
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using System.Data;
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using System.Data.Common;
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using System.Dynamic;
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using System.Linq;
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using System.Reflection;
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using System.Text;
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using System.Threading.Tasks;
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namespace MJTop.Data
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{
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internal class TypeInfo<T>
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{
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static TypeInfo()
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{
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TyThis = typeof(T);
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Name = TyThis.Name;
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IsValueType = TyThis.IsValueType;
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IsAnonymousType = Name.Contains("AnonymousType");
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if (Name == "DbParameter[]")
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{
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IsArrayParameter = true;
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}
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else if (Name == "List`1")
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{
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Type typeTmp = TyThis.GetGenericArguments()[0];
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if (typeTmp.Name == "DbParameter")
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{
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IsListParameter = true;
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}
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}
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else if ((typeof(IDictionary)).IsAssignableFrom(TyThis)) // Dictionary 或 Hashtable
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//不能是：
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//|| (typeof(IDictionary<string, string>)).IsAssignableFrom(TyThis)
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//|| (typeof(IDictionary<string, object>)).IsAssignableFrom(TyThis)
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//|| (typeof(IDictionary<object, object>)).IsAssignableFrom(TyThis))
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{
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IsDict = true;
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}
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else if ((typeof(NameValueCollection)).IsAssignableFrom(TyThis))
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{
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IsNameValueColl = true;
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}
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else //可能是 匿名对象，也可能时实体对象
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{
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Props = TyThis.GetProperties();
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PropNames = new List<string>();
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PropMapping = new Dictionary<string, PropertyInfo>();
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foreach (var prop in Props)
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{
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PropMapping.Add(prop.Name, prop);
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PropNames.Add(prop.Name);
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}
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}
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TableAttribute table = TyThis.GetCustomAttribute<TableAttribute>();
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TableName = (table?.Name) ?? Name;
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}
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public static Type TyThis { get; set; }
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public static bool IsValueType { get; set; }
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public static PropertyInfo[] Props { get; set; }
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public static Dictionary<string, PropertyInfo> PropMapping { get; set; } = new Dictionary<string, PropertyInfo>(StringComparer.OrdinalIgnoreCase);
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public static List<string> PropNames { get; set; } = new List<string>();
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public static string Name { get; private set; }
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public static string TableName { get; private set; }
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public static bool IsDict { get; private set; }
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public static bool IsNameValueColl { get; private set; }
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public static bool IsAnonymousType { get; private set; }
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public static bool IsArrayParameter { get; private set; }
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public static bool IsListParameter { get; private set; }
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public static IDataParameter[] CloneParameters(IDataParameter[] originalParameters)
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{
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IDataParameter[] parameterArray = new IDataParameter[originalParameters.Length];
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int index = 0;
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int length = originalParameters.Length;
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while (index < length)
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{
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parameterArray[index] = (IDataParameter)((ICloneable)originalParameters[index]).Clone();
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index++;
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}
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return parameterArray;
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}
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}
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}
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