QueryInterceptor.EntityFrameworkCore7 2.0.0

dotnet add package QueryInterceptor.EntityFrameworkCore7 --version 2.0.0                
NuGet\Install-Package QueryInterceptor.EntityFrameworkCore7 -Version 2.0.0                
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="QueryInterceptor.EntityFrameworkCore7" Version="2.0.0" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add QueryInterceptor.EntityFrameworkCore7 --version 2.0.0                
#r "nuget: QueryInterceptor.EntityFrameworkCore7, 2.0.0"                
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install QueryInterceptor.EntityFrameworkCore7 as a Cake Addin
#addin nuget:?package=QueryInterceptor.EntityFrameworkCore7&version=2.0.0

// Install QueryInterceptor.EntityFrameworkCore7 as a Cake Tool
#tool nuget:?package=QueryInterceptor.EntityFrameworkCore7&version=2.0.0                

QueryInterceptor.Core

Forked from : https://github.com/StefH/QueryInterceptor.Core

The following frameworks are supported

  • net7.0

The problem

Normally when you're trying to modify expression trees you need to write an expression visitor. When trying to plug your expression visitor into an IQuerable's expression tree, you need to write a linq provider (yikes).

Implementation based on http://stackoverflow.com/questions/1839901/how-to-wrap-entity-framework-to-intercept-the-linq-expression-just-before-executi

The solution

QueryInterceptor introduces one extension method on IQueryable<T> (InterceptWith) that lets you plug in arbitrary expression visitors.

    namespace QueryInterceptor {
        public static class QueryableExtensions {
            public static IQueryable<T> InterceptWith<T>(this IQueryable<T> source, params ExpressionVisitor[] visitors);
        }
    }

Basic Example

The example below uses an expression visitor that changes == to != anywhere in the expression tree.

    public class EqualsToNotEqualsVisitor : ExpressionVisitor {
        protected override Expression VisitBinary(BinaryExpression node) {
            if (node.NodeType == ExpressionType.Equal) {
                // Change == to !=
                return Expression.NotEqual(node.Left, node.Right);
            }
            return base.VisitBinary(node);
        }
    }
    
    class Program {
        static void Main(string[] args) {
            var query = from n in Enumerable.Range(0, 10).AsQueryable()
                        where n % 2 == 0
                        select n;

            // Print even numbers
            foreach (var item in query) {
                Console.WriteLine(item);
            }

            Console.WriteLine();

            // Print odd numbers
            var visitor = new EqualsToNotEqualsVisitor();
            foreach (var item in query.InterceptWith(visitor)) {
                Console.WriteLine(item);
            }
        }
    }
Product Compatible and additional computed target framework versions.
.NET net7.0 is compatible.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

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Version Downloads Last updated
2.0.0 315 2/6/2023

See releasenotes