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Navigate query

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This commit is contained in:
sunkaixuan
2022-04-12 01:30:21 +08:00
parent 4d2abd2f32
commit a955a68ce1
2 changed files with 70 additions and 2 deletions
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47
Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/NavigatManager.cs
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@@ -24,6 +24,7 @@ namespace SqlSugar
//public QueryableProvider<T> Queryable { get; set; }
private List<Expression> _preExpressionList = new List<Expression>();
private List<object> _preList = new List<object>();
//private Expression[] _expressions;
//private List<T> _list;
//private EntityInfo _entityInfo;
@@ -46,10 +47,45 @@ namespace SqlSugar
}
else if (i == 2)
{
var currentList = RootList;
if (RootList == null || currentList.Count == 0) return;
var memberExpression = ((_preExpressionList.Last() as LambdaExpression).Body as MemberExpression);
var navObjectName = memberExpression.Member.Name;
var list = RootList.Select(it => (it.GetType().GetProperty(navObjectName).GetValue(it))).ToList();
var navType = currentList[0].GetType().GetProperty(navObjectName).PropertyType.Name;
var isList = navType.StartsWith("List`");
List<object> list = new List<object>();
if (isList)
{
list = currentList.SelectMany(it => (it.GetType().GetProperty(navObjectName).GetValue(it) as IList).Cast<object>()).ToList();
}
else
{
list = currentList.Select(it => (it.GetType().GetProperty(navObjectName).GetValue(it))).ToList();
}
ExecuteByLay(item, list, SelectR2);
_preList = list;
}
else if (i == 3)
{
var currentList = _preList;
if (RootList == null || currentList.Count == 0) return;
var memberExpression = ((_preExpressionList.Last() as LambdaExpression).Body as MemberExpression);
var navObjectName = memberExpression.Member.Name;
var navType = currentList[0].GetType().GetProperty(navObjectName).PropertyType.Name;
var isList = navType.StartsWith("List`");
List<object> list = new List<object>();
if (isList)
{
list = currentList.SelectMany(it => (it.GetType().GetProperty(navObjectName).GetValue(it) as IList).Cast<object>()).ToList();
}
else
{
list = currentList.Select(it => (it.GetType().GetProperty(navObjectName).GetValue(it))).ToList();
}
ExecuteByLay(item, list, SelectR3);
_preList = list;
}
_preExpressionList.Add(item);
}
@@ -57,9 +93,16 @@ namespace SqlSugar
private void ExecuteByLay(Expression expression, List<object> list, Func<ISugarQueryable<object>, List<object>> selector)
{
if (list == null || list.Count == 0) return;
list = list.Where(it => it != null).ToList();
var memberExpression = ((expression as LambdaExpression).Body as MemberExpression);
var listItemType = list[0].GetType();
var listItemType = list.Where(it=>it!=null).FirstOrDefault()?.GetType();
if (listItemType.Name.StartsWith("List`"))
{
listItemType = listItemType.GetGenericArguments()[0];
}
if (listItemType == null) return;
var listItemEntity = this.Context.EntityMaintenance.GetEntityInfo(listItemType);
var listPkColumn = listItemEntity.Columns.Where(it => it.IsPrimarykey).FirstOrDefault();
var navObjectName = memberExpression.Member.Name;