/// <summary>
/// 构造函数
/// </summary>
/// <param name="memberInfo">映射成员信息</param>
/// <param name="fieldName">数据库字段名</param>
/// <param name="dbOpType">数据库字段操作类型</param>
public DBColumn(MemberInfo memberInfo, string fieldName, string dbType, bool notNull, string defaultVal, DBColumnOpType dbOpType = DBFrame.DBColumnOpType.All)
{
_objHelper = new ObjectHelper();
if (memberInfo is PropertyInfo)
{
PropertyInfo = (PropertyInfo)memberInfo;
Type = PropertyInfo.PropertyType;
}
else if (memberInfo is FieldInfo)
{
FieldInfo = (FieldInfo)memberInfo;
Type = FieldInfo.FieldType;
}
else
{
throw new MyDBException("在构造DBColumn[" + memberInfo.Name + "]时,传入了无效的类型!");
}
if (Type.IsGenericType && Type.GetGenericTypeDefinition() == typeof(Nullable <>))
{
Type = Nullable.GetUnderlyingType(Type);
}
GetHandler = _objHelper.CreateDegGetValue(memberInfo.DeclaringType, memberInfo.Name);
SetHandler = _objHelper.CreateDegSetValue(memberInfo.DeclaringType, memberInfo.Name);
ColumnType = GetColumnType(Type);
Name = fieldName;
AliasName = memberInfo.Name;
DBColumnOpType = dbOpType;
this.DataType = dbType;
this.NotNull = notNull;
this.Default = defaultVal;
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="fieldName">数据库字段名称</param>
/// <param name="isIdentity">字段操作类型</param>
public DBColumnAttribute(string fieldName, DBColumnOpType dbColOpType)
: this(fieldName, string.Empty, string.Empty, false)
{
}
