ServiceStack ORMLite未填充来自MySQL的结果

Question

我是ServiceStack中的ORMLite新手。我试图查询现有的MySQL数据库。我创建这个POCO在MySQL中对应于我的表布局：

[Alias("checks")] 
public class Check 
{ 
    [AutoIncrement] 
    [PrimaryKey] 
    public long check_id { get; set; } 
    public long room_state_id { get; set; } 
    public DateTime? entry_stamp { get; set; } 
    public int student_id { get; set; } 
    public string reason { get; set; } 
    public string comments { get; set; } 
    public long check_type_id { get; set; } 
    public DateTime? check_dt { get; set; } 
    public byte grace { get; set; } 
    public DateTime curfew_dt { get; set; } 
    public int excused_by { get; set; } 
    public string status { get; set; } 
    public int points { get; set; } 
    public string check_class { get; set; } 
    public int leave_id { get; set; } 
    public DateTime night_of { get; set; } 
    public DateTime violation_dt { get; set; } 
    public string excused_reason { get; set; } 
    public DateTime? excused_dt { get; set; } 
    public sbyte imported { get; set; } 
} 

这里的MySQL表定义

CREATE TABLE checks (
    check_id bigint(11) NOT NULL AUTO_INCREMENT, 
    room_state_id bigint(11) NOT NULL DEFAULT 0, 
    entry_stamp datetime DEFAULT NULL, 
    student_id int(11) NOT NULL DEFAULT 0, 
    reason varchar(60) DEFAULT NULL, 
    comments text DEFAULT NULL, 
    check_type_id bigint(20) NOT NULL DEFAULT 0, 
    check_dt datetime DEFAULT NULL, 
    grace tinyint(4) UNSIGNED NOT NULL DEFAULT 0, 
    curfew_dt datetime NOT NULL DEFAULT '0000-00-00 00:00:00', 
    excused_by int(11) NOT NULL DEFAULT 0, 
    status char(1) NOT NULL DEFAULT '', 
    points int(11) NOT NULL DEFAULT 0, 
    check_class char(2) NOT NULL DEFAULT '', 
    leave_id int(11) NOT NULL DEFAULT 0, 
    night_of date NOT NULL DEFAULT '0000-00-00', 
    violation_dt datetime NOT NULL DEFAULT '0000-00-00 00:00:00', 
    excused_reason varchar(255) NOT NULL DEFAULT '', 
    excused_dt datetime DEFAULT '0000-00-00 00:00:00', 
    imported tinyint(1) NOT NULL DEFAULT 0, 
    PRIMARY KEY (check_id), 
    INDEX check_class (check_class), 
    INDEX check_dt (check_dt), 
    INDEX check_type_id (check_type_id), 
    INDEX excused_by (excused_by), 
    INDEX leave_id (leave_id), 
    INDEX night_of (night_of), 
    INDEX status (status), 
    INDEX student_id (student_id) 
) 

和我想要一些成果使用来获得：

public object Get(GetChecks request) 
    { 
     return new GetChecksResponse { Results = Db.Select<Check>(q => q.student_id == request.StudentId) }; 
    } 

当我测试这个，我得到了一个结果表的正确的行数，但没有填充数据（所有行中的所有字段为空或0，除了日期时间有一个无意义的日期）。我怎样才能找到为什么ORMLite没有填充我的POCO？

UPDATE：

测井显示了很多的DateTime转换错误：

2016-01-23 15:35:53.5869|ERROR|OrmLiteWriteCommandExtensions|MySql.Data.Types.MySqlConversionException: Unable to convert MySQL date/time value to System.DateTime 

在MySql.Data.Types.MySqlDateTime.GetDateTime（） 在MySql.Data.MySqlClient.MySqlDataReader.GetValue（ INT32ⅰ） 在MySql.Data.MySqlClient.MySqlDataReader.GetValues（对象[]值） 在ServiceStack.OrmLite.OrmLiteWriteCommandExtensions.PopulateWithSqlReader [T]（T objWithProperties，IOrmLiteDialectProvider dialectProvider，IDataReader的阅读器，Tuple`3 []索引缓存，对象[]值）

Answer 1

如果添加logging：

LogManager.LogFactory = new ConsoleLogFactory(); 

你会看到错误：

ERROR: System.FormatException: Input string was not in a correct format. 
    at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal) 
    at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info) 
    at System.SByte.Parse(String s, NumberStyles style, NumberFormatInfo info) 
    at ServiceStack.Text.Common.DeserializeBuiltin`1.<>c.<GetParseFn>b__4_2(String value) in C:\src\ServiceStack.Text\src\ServiceStack.Text\Common\DeserializeBuiltin.cs:line 51 
    at ServiceStack.OrmLite.OrmLiteConverterExtensions.ConvertNumber(IOrmLiteDialectProvider dialectProvider, Type toIntegerType, Object value) in C:\src\ServiceStack.OrmLite\src\ServiceStack.OrmLite\IOrmLiteConverter.cs:line 151 
    at ServiceStack.OrmLite.OrmLiteConverterExtensions.ConvertNumber(IOrmLiteConverter converter, Type toIntegerType, Object value) in C:\src\ServiceStack.OrmLite\src\ServiceStack.OrmLite\IOrmLiteConverter.cs:line 115 
    at ServiceStack.OrmLite.Converters.IntegerConverter.FromDbValue(Type fieldType, Object value) in C:\src\ServiceStack.OrmLite\src\ServiceStack.OrmLite\Converters\IntegerConverters.cs:line 25 
    at ServiceStack.OrmLite.OrmLiteWriteCommandExtensions.PopulateWithSqlReader[T](T objWithProperties, IOrmLiteDialectProvider dialectProvider, IDataReader reader, Tuple`3[] indexCache, Object[] values) in C:\src\ServiceStack.OrmLite\src\ServiceStack.OrmLite\OrmLiteWriteCommandExtensions.cs:line 343 

的问题是，MySQL的ADO.NET提供返回tinyint(1)为bool这样你就可以解决问题，改成一个bool：

public bool imported { get; set; }