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Update mongodb

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sunkaixuan
2025-06-28 17:06:09 +08:00
parent b1cc93912f
commit 44704a068c
3 changed files with 61 additions and 0 deletions
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2
Src/Asp.NetCore2/SqlSugar.MongoDbCore/ExpToSql/ExpressionVisitor.cs
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@@ -56,6 +56,8 @@ namespace SqlSugar.MongoDb
return new NewExpressionTractor(context, visitorContext).Extract(newNewExpression);
case ConditionalExpression conditionalExpression:
return new ConditionalExpressionTractor(context, visitorContext).Extract(conditionalExpression);
case ParameterExpression parameterExpression:
return new ParameterExpressionTractor(context, visitorContext).Extract(parameterExpression);
default:
throw new NotSupportedException($"Unsupported expression: {expr.NodeType}");
}

55
Src/Asp.NetCore2/SqlSugar.MongoDbCore/ExpToSql/VisitorItems/ParameterExpressionTractor.cs Normal file
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@@ -0,0 +1,55 @@
using MongoDB.Bson;
using System;
using System.Collections.Generic;
using System.Linq.Expressions;
using System.Text;
using System.Linq;
namespace SqlSugar.MongoDb
{
public class ParameterExpressionTractor
{
private MongoNestedTranslatorContext context;
private ExpressionVisitorContext visitorContext;
public ParameterExpressionTractor(MongoNestedTranslatorContext context, ExpressionVisitorContext visitorContext)
{
this.context = context;
this.visitorContext = visitorContext;
}
internal BsonValue Extract(ParameterExpression parameterExpression)
{
BsonValue bson = new BsonDocument();
if (IsSelect())
{
var isJoinTable = this.context?.queryBuilder?.JoinQueryInfos?.Any(s => s.ShortName.EqualCase(parameterExpression.Name)) == true;
foreach (var item in this.context.context.EntityMaintenance.GetEntityInfo(parameterExpression.Type).Columns)
{
// 跳过忽略的列
if (item.IsIgnore) continue;
if (isJoinTable)
{
// 构建 "$x.y"
string mongoFieldPath = "$" + parameterExpression.Name + "." + item.DbColumnName;
// 设置别名
string alias = item.DbColumnName; // 或者你自己定义别名逻辑
((BsonDocument)bson).Add(alias, mongoFieldPath);
}
else
{
((BsonDocument)bson).Add(item.DbColumnName, 1);
}
}
}
return bson;
}
private bool IsSelect()
{
return this.context.resolveType.IsIn(ResolveExpressType.SelectSingle, ResolveExpressType.SelectMultiple);
}
}
}