static void TestTableName(DataAccessor dal, ITableMappable mapper)
{
var mapping = dal.GetTableName(typeof(Post));
Console.WriteLine($"Original table name: {mapping.TableName}");
dal.ChangeMappingTable(typeof(Post), mapper, DateTime.Parse("2019-09-05"));
mapping = dal.GetTableName(typeof(Post));
Console.WriteLine($"Update table name: {mapping.TableName}\n");
}
/// <summary>
/// 根据条件改变传入类型的映射数据表(此操作会导致当前操作的context释放掉，调用前需确保context的内容已保存)
/// </summary>
/// <typeparam name="T">条件类型</typeparam>
/// <param name="type">要改变映射的实体类型</param>
/// <param name="condition">改变条件</param>
/// <exception cref="ArgumentException">type类型不支持</exception>
/// <returns>改变后的数据表映射</returns>
public TableAccessMapping ChangeMappingTable(Type type, ITableMappable mapper, object condition)
{
TableMappingRule rule = default;
rule.MappingType = type;
rule.Mapper = mapper;
rule.Condition = condition;
List <TableMappingRule> param = new List <TableMappingRule> {
rule
};
var result = ChangeMappingTables(param);
return(result[0]);
}
static void TestChangeDb(DataAccessor dal, ITableMappable mapper)
{
Console.WriteLine("\nTest change Db");
string dbPath = Directory.GetCurrentDirectory();
dbPath = Path.Combine(dbPath, "Blogging_1.db");
string conStr = $"Data Source={dbPath}";
Console.WriteLine("Org Data:");
var list = dal.GetAll <Blog>().ToList();
PrintData(list);
dal.ChangeDataBase(conStr);
Console.WriteLine("Changed Data:");
list = dal.GetAll <Blog>().ToList();
PrintData(list);
}
static void TestChangeTable(DataAccessor dal, ITableMappable mapper)
{
DateTime sept = DateTime.Parse("2019-09-05");
DateTime oct = DateTime.Parse("2019-10-05");
dal.ChangeMappingTable(typeof(Post), mapper, oct);
List <Post> octData = dal.GetAll <Post>().ToList();
Console.WriteLine("Oct. data");
foreach (Post item in octData)
{
Console.WriteLine(item);
}
dal.ChangeMappingTable(typeof(Post), mapper, sept);
List <Post> septData = dal.GetAll <Post>().ToList();
Console.WriteLine("Sept. data");
foreach (Post item in septData)
{
Console.WriteLine(item);
}
}
