/// <summary>
/// 获取特定属性名称的HashCode和小写的HashCode
/// </summary>
/// <param name="member"></param>
/// <returns></returns>
private static Expression[] Expr_GetMemberNameHashCodes(MemberInfo member)
{
var testCases = new List <Expression>();
// 计算HashCode的过程放在了代码生成阶段，使用Dictionary的方式时HashCode是执行时计算的。
StringLowerTable.GetLowerHashCode(member.Name);
StringLowerTable.GetLowerHashCode(member.Name.ToUpperInvariant());
int a = member.Name.GetHashCode();
int b = member.Name.ToLowerInvariant().GetHashCode();
testCases.Add(Expression.Constant(a));
testCases.Add(Expression.Constant(b));
foreach (var attribute in member.GetCustomAttributes(true))
{
if (attribute is EntityAttribute)
{
var compatibleName = (attribute as EntityAttribute).Name;
StringLowerTable.GetLowerHashCode(compatibleName);
StringLowerTable.GetLowerHashCode(compatibleName.ToLowerInvariant());
int c = compatibleName.GetHashCode();
int d = compatibleName.ToLowerInvariant().GetHashCode();
testCases.Add(Expression.Constant(c));
testCases.Add(Expression.Constant(d));
}
}
return(testCases.ToArray());
}
public static object GetValue(T obj, string name, bool IgnoreCase)
{
if (obj is IDataObject)
{
return((obj as IDataObject).GetValue(name, IgnoreCase));
}
int HashCode = IgnoreCase ?
StringLowerTable.GetLowerHashCode(name.ToLower()) :
StringLowerTable.GetLowerHashCode(name);
return(GetValue_NEW(obj, HashCode));
}