public bool UpdateLostThingRecord(LostThingsRecord Record, bool IsAdd = false)
{
using (var tr = context.Database.BeginTransaction())
{
try
{
if (IsAdd)
{
context.LostThingsRecord.Add(Record);
}
else
{
context.LostThingsRecord.Update(Record);
}
context.SaveChanges();
tr.Commit();
return(true);
}
catch (Exception e)
{
ErrorHandler.FormatError <ThingOperator>(logger, e);
tr.Rollback();
return(false);
}
}
}
public CommonResponse PublishLostThingRecord(LostThingsRecord record)
{
if (record == null)
{
return(new CommonResponse()
{
StatusCode = 1505
});
}
if (thing.UpdateLostThingRecord(record, true))
{
PushClient.NotifyNewPublsih();
return(new CommonResponse()
{
StatusCode = 0
});
}
else
{
return(new CommonResponse()
{
StatusCode = 1503
});
}
}
public static LostThingsRecord MergeLostThingsRecord(this LostThingsRecord origin, LostThingsRecord changed)
{
var CanModifyProperties = typeof(LostThingsRecord)
.GetProperties()
.Where(x => !x.CustomAttributes.Any(y => y.AttributeType == typeof(ShouldNotModifyAttribute)));
foreach (var prop in CanModifyProperties)
{
prop.SetValue(origin, prop.GetValue(changed));
}
return(origin);
}
public CommonResponse UpdateLostThingRecord(LostThingsRecord ChangedRecord)
{
if (ChangedRecord == null)
{
return(new CommonResponse()
{
StatusCode = 1504
});
}
// 首先检查待更新的对象在数据库中是否存在旧对象
var RecordGUID = ChangedRecord.Id;
var OldRecord = thing.GetLostThingsRecord(RecordGUID);
if (OldRecord == null)
{
return(new CommonResponse()
{
StatusCode = 1501
});
}
else
{
// 然后检查新对象是否修改了不应该修改的Field。
bool UnchangedValidation = ThingHelper.EnsureNotModifyFieldsUnchanged(OldRecord, ChangedRecord);
if (!UnchangedValidation)
{
return(new CommonResponse()
{
StatusCode = 1502
});
}
else
{
// 校验成功之后，合并新旧对象的Fields，向数据库中写入。
OldRecord.MergeLostThingsRecord(ChangedRecord);
if (thing.UpdateLostThingRecord(OldRecord))
{
return new CommonResponse()
{
StatusCode = 0
}
}
;
else
{
return new CommonResponse()
{
StatusCode = 1503
}
};
}
}
}
public static bool EnsureNotModifyFieldsUnchanged(LostThingsRecord Old, LostThingsRecord New)
{
var CannotModifyProperties = typeof(LostThingsRecord)
.GetProperties()
.Where(x => x.CustomAttributes.Any(y => y.AttributeType == typeof(ShouldNotModifyAttribute)));
foreach (var prop in CannotModifyProperties)
{
Type FieldType = prop.GetType();
var OldField = prop.GetValue(Old);
var NewField = prop.GetValue(New);
if (!OldField.Equals(NewField))
{
return(false);
}
}
return(true);
}
public JsonResult UpdateLostThingInfo([FromBody] LostThingsRecord record)
{
return(new JsonResult(thingServices.UpdateLostThingRecord(record)));
}
public JsonResult PublishLostThing([FromBody] LostThingsRecord record)
{
return(new JsonResult(thingServices.PublishLostThingRecord(record)));
}
