lsm/SqlSugar
1
0
Fork 0
mirror of https://gitee.com/dotnetchina/SqlSugar.git synced 2025-09-19 10:08:19 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Add Queryable.ToPivotList , DataTable , Json

Browse Source
This commit is contained in:
sunkaixuna
2021-04-24 21:03:04 +08:00
parent d8c25ad1d6
commit 6e9646e958
4 changed files with 114 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
View File

@@ -891,6 +891,19 @@ namespace SqlSugar
{
return this.Context.Utilities.SerializeObject(this.ToPageList(pageIndex, pageSize, ref totalNumber), typeof(T));
}
public virtual DataTable ToPivotTable<TColumn, TRow, TData>(Func<T, TColumn> columnSelector, Expression<Func<T, TRow>> rowSelector, Func<IEnumerable<T>, TData> dataSelector)
{
return this.ToList().ToPivotTable(columnSelector,rowSelector,dataSelector);
}
public virtual List<dynamic> ToPivotList<TColumn, TRow, TData>(Func<T, TColumn> columnSelector, Expression<Func<T, TRow>> rowSelector, Func<IEnumerable<T>, TData> dataSelector)
{
return this.ToList().ToPivotList(columnSelector, rowSelector, dataSelector);
}
public virtual string ToPivotJson<TColumn, TRow, TData>(Func<T, TColumn> columnSelector, Expression<Func<T, TRow>> rowSelector, Func<IEnumerable<T>, TData> dataSelector)
{
var list= this.ToPivotList(columnSelector, rowSelector, dataSelector);
return this.Context.Utilities.SerializeObject(list);
}
public List<T> ToParentList(Expression<Func<T, object>> parentIdExpression, object primaryKeyValue)
{
List<T> result = new List<T>() { };

3
Src/Asp.Net/SqlSugar/Interface/IQueryable.cs
View File

@@ -166,6 +166,9 @@ namespace SqlSugar
void AddQueue();
ISugarQueryable<T> IgnoreColumns(Expression<Func<T, object>> columns);
ISugarQueryable<T> IgnoreColumns(params string[] columns);
DataTable ToPivotTable<TColumn, TRow, TData>(Func<T, TColumn> columnSelector,Expression<Func<T, TRow>> rowSelector,Func<IEnumerable<T>, TData> dataSelector);
List<dynamic> ToPivotList<TColumn, TRow, TData>(Func<T, TColumn> columnSelector, Expression<Func<T, TRow>> rowSelector, Func<IEnumerable<T>, TData> dataSelector);
string ToPivotJson<TColumn, TRow, TData>(Func<T, TColumn> columnSelector, Expression<Func<T, TRow>> rowSelector, Func<IEnumerable<T>, TData> dataSelector);
}
public partial interface ISugarQueryable<T, T2> : ISugarQueryable<T>
{

1
Src/Asp.Net/SqlSugar/SqlSugar.csproj
View File

@@ -192,6 +192,7 @@
<Compile Include="Realization\SqlServer\SqlBuilder\SqlServerBlueCopy.cs" />
<Compile Include="SqlSugarClient.cs" />
<Compile Include="Utilities\CallContext.cs" />
<Compile Include="Utilities\DataTableExtensions.cs" />
<Compile Include="Utilities\ReflectionExtensions.cs" />
<Compile Include="Realization\MySql\CodeFirst\MySqlCodeFirst.cs" />
<Compile Include="Realization\MySql\DbFirst\MySqlDbFirst.cs" />

97
Src/Asp.Net/SqlSugar/Utilities/DataTableExtensions.cs Normal file
View File

@@ -0,0 +1,97 @@
using System;
using System.Collections.Generic;
using System.Data;
using System.Dynamic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Threading.Tasks;
namespace SqlSugar
{
internal static class DataTableExtensions
{
public static DataTable ToPivotTable<T, TColumn, TRow, TData>(
this IEnumerable<T> source,
Func<T, TColumn> columnSelector,
Expression<Func<T, TRow>> rowSelector,
Func<IEnumerable<T>, TData> dataSelector)
{
DataTable table = new DataTable();
var rowName = ((MemberExpression)rowSelector.Body).Member.Name;
table.Columns.Add(new DataColumn(rowName));
var columns = source.Select(columnSelector).Distinct();
foreach (var column in columns)
table.Columns.Add(new DataColumn(column.ToString()));
var rows = source.GroupBy(rowSelector.Compile())
.Select(rowGroup => new
{
Key = rowGroup.Key,
Values = columns.GroupJoin(
rowGroup,
c => c,
r => columnSelector(r),
(c, columnGroup) => dataSelector(columnGroup))
});
foreach (var row in rows)
{
var dataRow = table.NewRow();
var items = row.Values.Cast<object>().ToList();
items.Insert(0, row.Key);
dataRow.ItemArray = items.ToArray();
table.Rows.Add(dataRow);
}
return table;
}
public static List<dynamic> ToPivotList<T, TColumn, TRow, TData>(
this IEnumerable<T> source,
Func<T, TColumn> columnSelector,
Expression<Func<T, TRow>> rowSelector,
Func<IEnumerable<T>, TData> dataSelector)
{
var arr = new List<object>();
var cols = new List<string>();
String rowName = ((MemberExpression)rowSelector.Body).Member.Name;
var columns = source.Select(columnSelector).Distinct();
cols = (new[] { rowName }).Concat(columns.Select(x => x.ToString())).ToList();
var rows = source.GroupBy(rowSelector.Compile())
.Select(rowGroup => new
{
Key = rowGroup.Key,
Values = columns.GroupJoin(
rowGroup,
c => c,
r => columnSelector(r),
(c, columnGroup) => dataSelector(columnGroup))
}).ToList();
foreach (var row in rows)
{
var items = row.Values.Cast<object>().ToList();
items.Insert(0, row.Key);
var obj = GetAnonymousObject(cols, items);
arr.Add(obj);
}
return arr.ToList();
}
private static dynamic GetAnonymousObject(IEnumerable<string> columns, IEnumerable<object> values)
{
IDictionary<string, object> eo = new ExpandoObject() as IDictionary<string, object>;
int i;
for (i = 0; i < columns.Count(); i++)
{
eo.Add(columns.ElementAt<string>(i), values.ElementAt<object>(i));
}
return eo;
}
}
}