/// <summary>
/// 获取包含指定实体类所对应列名对应属性的值参数对象
/// </summary>
/// <param name="entity">实体对象</param>
/// <param name="column">列对象</param>
/// <param name="dba"></param>
/// <returns>返回包含参数值的对象实例</returns>
private static IDbDataParameter GetDataParameterObject(Entity entity, RdbColumn column, IRawDbAccesser dba)
{
var parameter = dba.ParameterFactory.CreateParameter();
parameter.ParameterName = column.Name;
var dbType = column.Info.ColumnMeta.DataType ?? MySqlDbTypeHelper.ConvertFromCLRType(column.Info.DataType);
parameter.DbType = dbType;
parameter.Value = column.ReadParameterValue(entity);
return(parameter);
}
/// <summary>
/// 写入实体和对应的值
/// </summary>
/// <param name="entity">实体对象</param>
/// <param name="value">结果值</param>
public override void Write(Entity entity, object value)
{
var info = this.Info;
if (value != null && info.IsBooleanType)
{
value = MySqlDbTypeHelper.ToCLRBoolean(value);
}
else if (value == null && info.IsStringType)
{
value = string.Empty;
}
base.Write(entity, value);
}
/// <summary>
/// 针对布尔类型和枚举类型进行特殊处理
/// </summary>
/// <param name="value">待转换的CLR数据类型</param>
/// <returns>返回MySql兼容的具体数据类型</returns>
internal static object PrepareConstraintValueInternal(object value)
{
if (value != DBNull.Value)
{
if (value is bool)
{
value = MySqlDbTypeHelper.ToDbBoolean((bool)value);
}
else if (value.GetType().IsEnum)
{
value = TypeHelper.CoerceValue(typeof(int), value);
}
}
return(value);
}
