/// <summary>
/// Gets a comma separated string with the column names. Meant to build queries.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <returns></returns>
public static string GetColumnNames(Type type)
{
//getting properties in a specific order
Dictionary <string, string> Mapping = new Dictionary <string, string>();
TypeInfo typeInfo = type.GetTypeInfo();
List <PropertyInfo> properties = new List <PropertyInfo>();
PropertyInfo idPropertyInfo = typeInfo.GetProperty("Id");
if (idPropertyInfo != null)
{
properties.Add(typeInfo.GetProperty("Id")); //TODO: this is because Join reader always assume Id comes first
}
properties.AddRange(typeInfo.GetProperties().Where(p => p.Name != "Id" && !p.CustomAttributes.Any(x => x.AttributeType == typeof(NotMappedAttribute))).OrderBy(p => p.Name).ToList());
foreach (PropertyInfo p in properties)
{
ColumnNameAttribute cma = p.GetCustomAttribute <ColumnNameAttribute>();
TableAliasAttribute taa = p.GetCustomAttribute <TableAliasAttribute>();
if (taa == null)
{
throw new Exception("Table alias must be defined for each mapped attribute.");
}
Mapping.Add(p.Name, cma != null ? $"{taa.Alias}.{cma.ColumnName}" : $"{taa.Alias}.{p.Name}");
}
return(String.Join(", ", Mapping.Values));
}
/// <summary>
/// 获取T的类名
/// </summary>
/// <returns></returns>
private string getEntityName()
{
Type type = typeof(T);
string name = type.Name; //获取当前成员的名称
string fullName = type.FullName; //获取类的全部名称不包括程序集
string nameSpace = type.Namespace; //获取该类的命名空间
var assembly = type.Assembly; //获取该类的程序集名
var module = type.Module; //获取该类型的模块名
var memberInfos = type.GetMembers(); //得到所有公共成员
TableAliasAttribute tableAlias = (TableAliasAttribute)type.GetCustomAttribute(typeof(TableAliasAttribute), true);
if (tableAlias != null)
{
return(tableAlias.Alias);
}
return(name.ToLower());
}
