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Navgate Query performance optimization

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sunkaixuan
2022-05-13 16:31:21 +08:00
parent 4f12f96c2b
commit 5c6891cf8f
1 changed files with 16 additions and 7 deletions
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23
Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/NavigatManager.cs
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@@ -323,29 +323,38 @@ namespace SqlSugar
var navList = selector(this.Context.Queryable<object>().AS(navEntityInfo.DbTableName).AddParameters(sqlObj.Parameters).Where(conditionalModels).WhereIF(sqlObj.WhereString.HasValue(), sqlObj.WhereString).Select(sqlObj.SelectString).OrderByIF(sqlObj.OrderByString.HasValue(), sqlObj.OrderByString));
if (navList.HasValue())
{
foreach (var item in list)
//var setValue = navList
// .Where(x => navColumn.PropertyInfo.GetValue(x).ObjToString() == listItemPkColumn.PropertyInfo.GetValue(item).ObjToString()).ToList();
var GroupQuery = (from l in list
join n in navList
on listItemPkColumn.PropertyInfo.GetValue(l).ObjToString()
equals navColumn.PropertyInfo.GetValue(n).ObjToString()
select new
{
l,
n
}).GroupBy(it=>it.l).ToList();
foreach (var item in GroupQuery)
{
var setValue = navList
.Where(x => navColumn.PropertyInfo.GetValue(x).ObjToString() == listItemPkColumn.PropertyInfo.GetValue(item).ObjToString()).ToList();
if (sqlObj.MappingExpressions.HasValue())
{
MappingFieldsHelper<T> helper = new MappingFieldsHelper<T>();
helper.NavEntity = navEntityInfo;
helper.Context = this.Context;
helper.RootEntity = this.Context.EntityMaintenance.GetEntityInfo<T>();
helper.SetChildList(navObjectNameColumnInfo, item,setValue,sqlObj.MappingExpressions);
helper.SetChildList(navObjectNameColumnInfo, item.Key,item.Select(it=>it.n).ToList(),sqlObj.MappingExpressions);
}
else
{
var instance = Activator.CreateInstance(navObjectNamePropety.PropertyType, true);
var ilist = instance as IList;
foreach (var value in setValue)
foreach (var value in item.Select(it => it.n).ToList())
{
ilist.Add(value);
}
navObjectNamePropety.SetValue(item, instance);
navObjectNamePropety.SetValue(item.Key, instance);
}
}
}