QueryTreeUtil.cs
4.81 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
using NCC.Dependency;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Reflection;
namespace NCC.Common.Util
{
/// <summary>
/// 树形结构查询
/// 版 本：V1.20.15.0
/// 版 权：Wesley（https://www.NCCsoft.com）
/// 作 者：NCC开发平台组
/// </summary>
[SuppressSniffer]
public static class QueryTreeUtil
{
/// <summary>
/// 递归查询
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="data">数据源</param>
/// <param name="condition">查询条件</param>
/// <param name="idSelector">主键</param>
/// <param name="parentIdSelector">上级</param>
/// <returns></returns>
public static List<T> TreeWhere<T>(this List<T> data, Predicate<T> condition, Func<T, string> idSelector, Func<T, string> parentIdSelector)
{
List<T> locateList = data.FindAll(condition);
List<T> treeList = new List<T>();
foreach (T entity in locateList)
{
treeList.Add(entity);
T currentNode = entity;
while (true)
{
string parentId = parentIdSelector(currentNode);
if (parentId == null)
break;
T upRecord = data.Find(a => idSelector(a) == parentId);
if (upRecord != null)
{
treeList.Add(upRecord);
currentNode = upRecord;
}
else
{
break;
}
}
}
return treeList.Distinct().ToList();
}
/// <summary>
/// 递归查询
/// </summary>
/// <param name="data">数据源</param>
/// <param name="condition">查询条件</param>
/// <param name="idSelector">主键</param>
/// <param name="parentIdSelector">上级</param>
/// <returns></returns>
public static DataTable TreeWhere(this DataTable data, string condition, string idSelector = "F_Id", string parentIdSelector = "F_ParentId")
{
DataRow[] drs = data.Select(condition);
DataTable treeTable = data.Clone();
foreach (DataRow dr in drs)
{
treeTable.ImportRow(dr);
string pId = dr[parentIdSelector].ToString();
while (true)
{
if (string.IsNullOrEmpty(pId) && pId == "0")
{
break;
}
DataRow[] pdrs = data.Select(idSelector + "='" + pId + "'");
if (pdrs.Length > 0)
{
treeTable.ImportRow(pdrs[0]);
pId = pdrs[0][parentIdSelector].ToString();
}
else
{
break;
}
}
}
return treeTable.DefaultView.ToTable(true);
}
/// <summary>
/// 获取全部子节点
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="data">数据源</param>
/// <param name="idValue">主键值</param>
/// <param name="idSelector">主键</param>
/// <param name="parentIdSelector">上级</param>
/// <returns></returns>
public static List<T> TreeChildNode<T>(this List<T> data, string idValue, Func<T, string> idSelector, Func<T, string> parentIdSelector)
{
T thisEntity = data.Find(a => idSelector(a) == idValue);
foreach (PropertyInfo prop in thisEntity.GetType().GetProperties())
{
if (prop.Name == "ParentId" || prop.Name == "parentId")
{
prop.SetValue(thisEntity, "0", null);
break;
}
}
List<T> treeList = new List<T>();
treeList.Add(thisEntity);
ChildNode(data, idValue, idSelector, parentIdSelector, ref treeList);
return treeList;
}
#region Method
private static void ChildNode<T>(this List<T> data, string idValue, Func<T, string> idSelector, Func<T, string> parentIdSelector, ref List<T> treeNodes)
{
List<T> locateList = data.FindAll(a => parentIdSelector(a) == idValue);
if (locateList.Count > 0)
{
foreach (var item in locateList)
{
treeNodes.Add(item);
ChildNode(data, idSelector(item), idSelector, parentIdSelector, ref treeNodes);
}
}
}
#endregion
}
}