From ec0c9e64d104623ef4cebf967afc4d8f1d9e2061 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Beno=C3=AEt=20Legat?= <benoit.legat@gmail.com>
Date: Fri, 10 Oct 2025 15:59:11 +0200
Subject: [PATCH] Implement ForwardConstraintDual for bridges

---
 src/bridges.jl | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/src/bridges.jl b/src/bridges.jl
index a56717b3c..6bf8be921 100644
--- a/src/bridges.jl
+++ b/src/bridges.jl
@@ -44,6 +44,13 @@ function MOI.set(
     return MOI.set(model, ForwardConstraintFunction(), bridge.constraint, value)
 end
 
+# We use the `MOI.Utilities` API so what we do should work
+# both on `MOI.AbstractFunction` and on `Vector{Float64}`
+const _GettableConstraintAttribute = Union{
+    ReverseConstraintFunction,
+    ForwardConstraintDual,
+}
+
 function MOI.set(
     model::MOI.ModelLike,
     attr::ForwardConstraintFunction,
@@ -60,7 +67,7 @@ end
 
 function MOI.get(
     model::MOI.ModelLike,
-    attr::ReverseConstraintFunction,
+    attr::_GettableConstraintAttribute,
     bridge::MOI.Bridges.Constraint.VectorizeBridge,
 )
     return MOI.Utilities.eachscalar(
@@ -80,7 +87,7 @@ end
 
 function MOI.get(
     model::MOI.ModelLike,
-    attr::ReverseConstraintFunction,
+    attr::_GettableConstraintAttribute,
     bridge::MOI.Bridges.Constraint.ScalarizeBridge,
 )
     return _vectorize(MOI.get.(model, attr, bridge.scalar_constraints))
@@ -88,7 +95,7 @@ end
 
 function MOI.get(
     model::MOI.ModelLike,
-    attr::DiffOpt.ReverseConstraintFunction,
+    attr::_GettableConstraintAttribute,
     bridge::MOI.Bridges.Constraint.AbstractFunctionConversionBridge,
 )
     return MOI.get(model, attr, bridge.constraint)
@@ -123,7 +130,7 @@ end
 
 function MOI.get(
     model::MOI.ModelLike,
-    attr::DiffOpt.ReverseConstraintFunction,
+    attr::_GettableConstraintAttribute,
     bridge::MOI.Bridges.Constraint.SetMapBridge,
 )
     func = MOI.get(model, attr, bridge.constraint)