[Analyzer] Update BindMemberAnalyzer to also consider properties of base classes

[tobias-tengler]

No description provided.

[Copilot]

Pull request overview

This PR updates the BindMemberAnalyzer to correctly handle members inherited from base classes. Previously, the analyzer would incorrectly report an error when using [BindMember] to reference a property that exists in a base class but not directly on the derived class.

Changes:

• Added HasMember helper method that walks the base type hierarchy to check for member existence
• Updated ValidateMemberExists to use the new helper instead of only checking the immediate type
• Added two new test cases to verify the fix works with both nameof() and string literal syntax

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
src/HotChocolate/Core/src/Types.Analyzers/BindMemberAnalyzer.cs	Refactored member existence check to walk base class hierarchy using new HasMember helper method
src/HotChocolate/Core/test/Types.Analyzers.Tests/BindMemberAnalyzerTests.cs	Added two test cases for inherited members: one using nameof() and one using string literal
src/HotChocolate/Core/test/Types.Analyzers.Tests/__snapshots__/BindMemberAnalyzerTests.BindMember_WithNameof_InheritedMember_NoError.md	Snapshot file showing expected generated code for nameof() test
src/HotChocolate/Core/test/Types.Analyzers.Tests/__snapshots__/BindMemberAnalyzerTests.BindMember_WithString_InheritedMember_NoError.md	Snapshot file showing expected generated code for string literal test

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Fusion Gateway Performance Results

Simple Composite Query

	Req/s	Err%
Constant (50 VUs)	2941.45	0.00%
Ramping (0-500-0 VUs)	3208.07	0.00%

Response Times & Query

	Min	Med	Avg	P90	P95	Max
Constant	0.81ms	14.87ms	16.78ms	31.10ms	36.63ms	171.58ms
Ramping	0.75ms	65.79ms	69.48ms	132.97ms	150.60ms	270.70ms

query TestQuery {
  topProducts(first: 5) {
    inStock
    name
    price
    shippingEstimate
    upc
    weight
    reviews {
      id
      body
      author {
        id
        username
        name
      }
    }
  }
}

---

Deep Recursion Query

	Req/s	Err%
Constant (50 VUs)	753.75	0.00%
Ramping (0-500-0 VUs)	832.21	0.00%

Response Times & Query

	Min	Med	Avg	P90	P95	Max
Constant	9.10ms	61.98ms	64.80ms	79.84ms	88.22ms	342.27ms
Ramping	1.84ms	246.46ms	259.23ms	524.20ms	558.51ms	669.64ms

query TestQuery {
  users {
    id
    username
    name
    reviews {
      id
      body
      product {
        inStock
        name
        price
        shippingEstimate
        upc
        weight
        reviews {
          id
          body
          author {
            id
            username
            name
            reviews {
              id
              body
              product {
                inStock
                name
                price
                shippingEstimate
                upc
                weight
              }
            }
          }
        }
      }
    }
  }
  topProducts(first: 5) {
    inStock
    name
    price
    shippingEstimate
    upc
    weight
    reviews {
      id
      body
      author {
        id
        username
        name
        reviews {
          id
          body
          product {
            inStock
            name
            price
            shippingEstimate
            upc
            weight
          }
        }
      }
    }
  }
}

---

Variable Batching Throughput

	Req/s	Err%
Constant (50 VUs)	23249.83	0.00%
Ramping (0-500-0 VUs)	18463.81	0.00%

Response Times & Query

	Min	Med	Avg	P90	P95	Max
Constant	0.10ms	1.73ms	2.10ms	3.99ms	4.90ms	52.89ms
Ramping	0.10ms	9.42ms	11.43ms	23.45ms	28.12ms	105.93ms

query TestQuery($upc: ID!, $price: Long!, $weight: Long!) {
  productByUpc(upc: $upc) {
    inStock
    shippingEstimate(weight: $weight, price: $price)
  }
}

Variables (5 sets batched per request)

[
  { "upc": "1", "price": 899, "weight": 100 },
  { "upc": "2", "price": 1299, "weight": 1000 },
  { "upc": "3", "price": 15, "weight": 20 },
  { "upc": "4", "price": 499, "weight": 100 },
  { "upc": "5", "price": 1299, "weight": 1000 }
]

---

Run 22191073326 • Commit bcd5b12 • Thu, 19 Feb 2026 17:14:00 GMT