/// <summary>
/// 检测唯一规则
/// </summary>
/// <param name="view"></param>
/// <param name="dm"></param>
/// <param name="onlyattr"></param>
/// <param name="uponlyfields"></param>
/// <param name="modalcontext"></param>
/// <param name="errs"></param>
private void CheckOnlyValues(
IDataModel dm,
OnlyValueKeysAttribute onlyattr,
IEnumerable <string> uponlyfields,
IDataUpdateContext modalcontext,
IList <DataModalFieldException> errs)
{
if (((modalcontext.ModalState & ModalState.AddNew) == ModalState.AddNew ||
(modalcontext.ModalState & ModalState.Update) == ModalState.Update) &&
onlyattr != null && onlyattr.OnlyKeys != null && onlyattr.OnlyKeys.Count() > 0 &&
uponlyfields != null && uponlyfields.Count() > 0)
{
IDataSelector view = CurrentSelector;
object data = modalcontext.Data;
//要查询的参数名称
List <string> parametnames = new List <string>(onlyattr.OnlyKeys);
//构建查选参数
object paramet = modalcontext.ModalType.CreateObject();
switch (modalcontext.ModalState)
{
case ModalState.AddNew:
{
//设置所有唯一值
foreach (var str in parametnames)
{
var f = dm.Fields[str];
f.SetModelFieldValue(paramet, f.GetModelFieldValue(data));
}
break;
}
case ModalState.Update:
{
paramet.SetPropertyValue("Id", data.GetPropertyValue("Id"));
object orgvalue = null;
foreach (var str in parametnames)
{
if (uponlyfields.FirstOrDefault(f => string.Equals(f, str, StringComparison.OrdinalIgnoreCase)) != null)
{
//值已修改
var f = dm.Fields[str];
f.SetModelFieldValue(paramet, f.GetModelFieldValue(data));
}
else
{
//值未修改
//获取原值
if (orgvalue == null)
{
orgvalue = view.GetDataById(modalcontext.ModalType, null, (long)data.GetMemberValue("Id"));
}
var f = dm.Fields[str];
f.SetModelFieldValue(paramet, f.GetModelFieldValue(orgvalue));
}
}
break;
}
}
//全为null值时的策略
if (!onlyattr.IsIncludeAllNull && IsAllNullValue(paramet, onlyattr.OnlyKeys, dm))
{
return;
}
string softdelfieldname = dm.GetSoftDeleteFieldName();
if (!string.IsNullOrEmpty(softdelfieldname))
{
//该模型是软删除模型
//设置为未删除
if (!parametnames.Contains(softdelfieldname))
{
parametnames.Add(softdelfieldname);
}
dm.Fields[softdelfieldname].SetModelFieldValue(paramet, false);
}
List <string> filters = new List <string>();
List <IDataParamet> filterpn = new List <IDataParamet>();
foreach (var pn in parametnames)
{
IDataParamet pv;
string f = QuerySqlFactory.CreateEqWhere(view.DbTypeName, pn, dm.Fields[pn].GetModelFieldValue(paramet), out pv);
if (!string.IsNullOrEmpty(f))
{
filters.Add(f);
}
if (pv != null)
{
filterpn.Add(pv);
}
}
switch (modalcontext.ModalState)
{
case ModalState.Update:
{
//排除本身的条件
long id = (long)data.GetPropertyValue("Id");
IDataParamet pv;
string f = QuerySqlFactory.CreateNotEqWhere(view.DbTypeName, "Id", id, out pv);
if (!string.IsNullOrEmpty(f))
{
filters.Add(f);
}
if (pv != null)
{
filterpn.Add(pv);
}
break;
}
}
if (view.GetDataByAndFilterExpress(modalcontext.ModalType, filters, filterpn, new string[] { "Id" }) != null)
{
AddOnlyValueErrors(onlyattr.OnlyKeys, dm, errs);
}
}
}
