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Update mongodb

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This commit is contained in:
sunkaixuan 2025-05-04 15:12:29 +08:00
parent 332808ce60
commit 739961e618
9 changed files with 82 additions and 27 deletions
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16
Src/Asp.NetCore2/MongoDbTest/ExpTest.cs
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@ -14,22 +14,20 @@ namespace MongoDbTest
{
public static void Init()
{
Expression<Func<Order, bool>> exp = it=>it.Id==1||it.Name=="a";
var json=MongoNestedTranslator.Translate(exp,null);
Expression<Func<Order, bool>> exp = it => it.Id == 1 || it.Name == "a";
var json = MongoNestedTranslator.Translate(exp, null).ToString();
var Order = new Order() { Id = 1 };
Expression<Func<Order, bool>> exp2 = it => it.Id == Order.Id || it.Name == "a";
var json2 = MongoNestedTranslator.Translate(exp2, null);
var json2 = MongoNestedTranslator.Translate(exp2, null).ToString();
Expression<Func<Order, bool>> exp3 = it=> it.IsValidate==true;
var json23 = MongoNestedTranslator.Translate(exp3, null);
Expression<Func<Order, bool>> exp3 = it => it.IsValidate == true;
var json3 = MongoNestedTranslator.Translate(exp3, null).ToString();
Expression<Func<Order, bool>> exp4 = it => it.IsValidate != true;
var json24 = MongoNestedTranslator.Translate(exp4, null);
var json24 = MongoNestedTranslator.Translate(exp4, null).ToString();
Expression<Func<Order, bool>> exp5 = it =>1==it.Id;
var json5 = MongoNestedTranslator.Translate(exp5, null);
var json5 = MongoNestedTranslator.Translate(exp5, null).ToString();
}
}
public class Order

11
Src/Asp.NetCore2/SqlSugar.MongoDbCore/ExpToSql/Context/ExpressionVisitorContext.cs Normal file
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@ -0,0 +1,11 @@
using System;
using System.Collections.Generic;
using System.Text;
namespace SqlSugar.MongoDbCore.ExpToSql.Context
{
public class ExpressionVisitorContext
{
public Type ExpType { get; set; }
}
}

2
Src/Asp.NetCore2/SqlSugar.MongoDbCore/ExpToSql/MongoNestedTranslatorContext.cs → Src/Asp.NetCore2/SqlSugar.MongoDbCore/ExpToSql/Context/MongoNestedTranslatorContext.cs
View File

@ -2,7 +2,7 @@
using System.Collections.Generic;
using System.Text;
namespace SqlSugar.MongoDbCore
namespace SqlSugar.MongoDbCore.ExpToSql.Context
{
public class MongoNestedTranslatorContext
{

18
Src/Asp.NetCore2/SqlSugar.MongoDbCore/ExpToSql/ExpressionVisitor.cs
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@ -1,4 +1,5 @@
using Newtonsoft.Json.Linq;
using SqlSugar.MongoDbCore.ExpToSql.Context;
using SqlSugar.MongoDbCore.ExpToSql.VisitorItems;
using System;
using System.Collections.Generic;
@ -7,26 +8,31 @@ using System.Text;
namespace SqlSugar.MongoDbCore
{
public class ExpressionVisitor
public class ExpressionVisitor
{
private MongoNestedTranslatorContext context;
public ExpressionVisitorContext visitorContext;
public ExpressionVisitor(MongoNestedTranslatorContext context, ExpressionVisitorContext expressionVisitorContext)
{
this.context = context;
this.visitorContext = expressionVisitorContext;
}
public ExpressionVisitor(MongoNestedTranslatorContext context)
{
this.context = context;
}
public JToken Visit(Expression expr)
public JToken Visit(Expression expr)
{
expr = MongoDbExpTools.RemoveConvert(expr);
switch (expr)
{
case BinaryExpression binary:
return new BinaryExpressionTranslator(context).Extract(binary);
return new BinaryExpressionTranslator(context, visitorContext).Extract(binary);
case MemberExpression member:
return new FieldPathExtractor(context).Extract(member);
return new FieldPathExtractor(context, visitorContext).Extract(member);
case ConstantExpression constant:
return new ValueExtractor(context).Extract(constant);
return new ValueExtractor(context, visitorContext).Extract(constant);
case UnaryExpression unary:
return this.Visit(unary);
case LambdaExpression lambda:

17
Src/Asp.NetCore2/SqlSugar.MongoDbCore/ExpToSql/MongoDbExpTools.cs
View File

@ -56,6 +56,23 @@ namespace SqlSugar.MongoDbCore
// 默认的ToString
return value.ToString();
}
public static bool IsField(Expression expr)
{
// 如果是字段或属性访问（例如 x.Name）
if (expr is MemberExpression)
return true;
// 如果是类型转换（例如 (object)x.Name），递归判断内部表达式
if (expr is UnaryExpression unaryExpr &&
(unaryExpr.NodeType == ExpressionType.Convert || unaryExpr.NodeType == ExpressionType.ConvertChecked))
{
return IsField(unaryExpr.Operand);
}
return false;
}
internal static Expression RemoveConvert(Expression item)
{
for (int i = 0; i < 10; i++)

1
Src/Asp.NetCore2/SqlSugar.MongoDbCore/ExpToSql/MongoNestedTranslator.cs
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@ -3,6 +3,7 @@ using System.Collections.Generic;
using System.Text;
using System.Linq.Expressions;
using Newtonsoft.Json.Linq;
using SqlSugar.MongoDbCore.ExpToSql.Context;
namespace SqlSugar.MongoDbCore
{

31
Src/Asp.NetCore2/SqlSugar.MongoDbCore/ExpToSql/VisitorItems/BinaryExpressionTranslator.cs
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@ -1,4 +1,6 @@
using Newtonsoft.Json.Linq;
using MongoDB.Driver;
using Newtonsoft.Json.Linq;
using SqlSugar.MongoDbCore.ExpToSql.Context;
using System;
using System.Collections.Generic;
using System.Linq.Expressions;
@ -10,7 +12,7 @@ namespace SqlSugar.MongoDbCore.ExpToSql.VisitorItems
{
MongoNestedTranslatorContext _context;
public BinaryExpressionTranslator(MongoNestedTranslatorContext context)
public BinaryExpressionTranslator(MongoNestedTranslatorContext context, ExpressionVisitorContext visitorContext)
{
_context = context;
}
@ -53,9 +55,20 @@ namespace SqlSugar.MongoDbCore.ExpToSql.VisitorItems
private JToken FieldComparisonExpression(BinaryExpression expr)
{
string field = new FieldPathExtractor(_context).Extract(expr.Left);
JToken value = new ExpressionVisitor(_context).Visit(expr.Right);
var left = new ExpressionVisitor(_context, new ExpressionVisitorContext());
var right = new ExpressionVisitor(_context, new ExpressionVisitorContext());
JToken field = left.Visit(expr.Left);
JToken value = right.Visit(expr.Right);
var leftIsMember = false;
var rightIsMember = false;
if (left?.visitorContext?.ExpType == typeof(MemberExpression))
{
leftIsMember = true;
}
if (right?.visitorContext?.ExpType == typeof(MemberExpression))
{
rightIsMember = true;
}
string op = expr.NodeType switch
{
ExpressionType.Equal => value.Type == JTokenType.Null ? "$eq" : null,
@ -67,12 +80,14 @@ namespace SqlSugar.MongoDbCore.ExpToSql.VisitorItems
_ => throw new NotSupportedException($"Unsupported binary op: {expr.NodeType}")
};
if (op == null)
return new JObject { [field] = value };
if (op == null&&leftIsMember&&rightIsMember==false)
return new JObject { [field.ToString()] = value };
else if (op == null && rightIsMember && leftIsMember == false)
return new JObject { [value.ToString()] = field };
return new JObject
{
[field] = new JObject { [op] = value }
[field.ToString()] = new JObject { [op] = value }
};
}
}

10
Src/Asp.NetCore2/SqlSugar.MongoDbCore/ExpToSql/VisitorItems/FieldPathExtractor.cs
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@ -1,4 +1,5 @@
using Newtonsoft.Json.Linq;
using SqlSugar.MongoDbCore.ExpToSql.Context;
using System;
using System.Collections.Generic;
using System.Linq.Expressions;
@ -9,10 +10,11 @@ namespace SqlSugar.MongoDbCore.ExpToSql.VisitorItems
public class FieldPathExtractor
{
MongoNestedTranslatorContext _context;
public FieldPathExtractor(MongoNestedTranslatorContext context)
ExpressionVisitorContext _visitorContext;
public FieldPathExtractor(MongoNestedTranslatorContext context, ExpressionVisitorContext visitorContext)
{
_context = context;
_visitorContext = visitorContext;
}
public string Extract(Expression expr)
@ -30,6 +32,10 @@ namespace SqlSugar.MongoDbCore.ExpToSql.VisitorItems
var value = ExpressionTool.GetMemberValue(oldMember.Member, oldExp);
return MongoDbExpTools.CustomToString(value);
}
if (_visitorContext != null)
{
_visitorContext.ExpType = typeof(MemberExpression);
}
return string.Join(".", parts);
}
}

3
Src/Asp.NetCore2/SqlSugar.MongoDbCore/ExpToSql/VisitorItems/ValueExtractor.cs
View File

@ -1,4 +1,5 @@
using Newtonsoft.Json.Linq;
using SqlSugar.MongoDbCore.ExpToSql.Context;
using System;
using System.Collections.Generic;
using System.Linq.Expressions;
@ -9,7 +10,7 @@ namespace SqlSugar.MongoDbCore.ExpToSql.VisitorItems
public class ValueExtractor
{
MongoNestedTranslatorContext _context;
public ValueExtractor(MongoNestedTranslatorContext context)
public ValueExtractor(MongoNestedTranslatorContext context, ExpressionVisitorContext visitorContext)
{
_context = context;
}