[Bridges] fix querying result attributes with result_index != 1 (#2583)

Author: odow

src/Bridges/Constraint/bridges/det.jl

@@ -231,8 +231,6 @@ function MOI.get(
     attr::Union{MOI.ConstraintPrimal,MOI.ConstraintPrimalStart},
     bridge::LogDetBridge,
 )
-    d = length(bridge.lcindex)
-    Δ = MOI.get(model, MOI.VariablePrimal(), bridge.Δ)
     t =
         MOI.get(model, attr, bridge.tlindex) +
         sum(MOI.get(model, attr, ci)[1] for ci in bridge.lcindex)

src/Bridges/Constraint/bridges/norm_spec_nuc_to_psd.jl

@@ -200,10 +200,10 @@ end
 # constraint is (tr(U) + tr(V), 2X) in NormNuclearCone.
 function MOI.get(
     model::MOI.ModelLike,
-    ::MOI.ConstraintDual,
+    attr::MOI.ConstraintDual,
     bridge::NormSpectralBridge,
 )
-    dual = MOI.get(model, MOI.ConstraintDual(), bridge.psd_index)
+    dual = MOI.get(model, attr, bridge.psd_index)
     column_dim = bridge.column_dim
     side_dim = bridge.row_dim + column_dim
     t = sum(dual[MOI.Utilities.trimap(i, i)] for i in 1:side_dim)
@@ -450,11 +450,11 @@ end
 
 function MOI.get(
     model::MOI.ModelLike,
-    ::MOI.ConstraintPrimal,
+    attr::MOI.ConstraintPrimal,
     bridge::NormNuclearBridge,
 )
-    ge_primal = MOI.get(model, MOI.ConstraintPrimal(), bridge.ge_index)
-    psd_primal = MOI.get(model, MOI.ConstraintPrimal(), bridge.psd_index)
+    ge_primal = MOI.get(model, attr, bridge.ge_index)
+    psd_primal = MOI.get(model, attr, bridge.psd_index)
     side_dim = bridge.row_dim + bridge.column_dim
     t =
         ge_primal +

src/Bridges/Objective/bridges/slack.jl

@@ -155,8 +155,11 @@ function MOI.get(
     # value of `bridge.slack`. Since `bridge.constraint` is `g - slack`, we can
     # get the value of the original objective by summing the value of `slack`
     # with the `ConstraintPrimal` of the constraint.
-    obj_slack_constant =
-        MOI.get(model, MOI.ConstraintPrimal(), bridge.constraint)
+    obj_slack_constant = MOI.get(
+        model,
+        MOI.ConstraintPrimal(attr.result_index),
+        bridge.constraint,
+    )
     return obj_slack_constant + slack + bridge.constant
 end
 

src/Bridges/Objective/bridges/vector_slack.jl

@@ -159,7 +159,11 @@ function MOI.get(
     N = attr_g.result_index
     attr_f = MOI.Bridges.ObjectiveFunctionValue{MOI.VectorOfVariables}(N)
     objective_value = MOI.get(model, attr_f)
-    con_primal = MOI.get(model, MOI.ConstraintPrimal(), bridge.constraint)
+    con_primal = MOI.get(
+        model,
+        MOI.ConstraintPrimal(attr_g.result_index),
+        bridge.constraint,
+    )
     sense = MOI.get(model, MOI.ObjectiveSense())
     if sense == MOI.MIN_SENSE
         # con_primal = objective_value - f(x)

test/Bridges/Objective/slack.jl

@@ -208,6 +208,34 @@ function test_SlackBridge_ObjectiveFunctionValue()
     return
 end
 
+function test_SlackBridge_ObjectiveFunctionValue_2()
+    inner = MOI.Utilities.MockOptimizer(MOI.Utilities.Model{Float64}())
+    model = MOI.Bridges.Objective.Slack{Float64}(inner)
+    x = MOI.add_variable(model)
+    MOI.add_constraint(model, x, MOI.GreaterThan(1.0))
+    f = 1.1 * x - 1.2
+    MOI.set(model, MOI.ObjectiveSense(), MOI.MIN_SENSE)
+    MOI.set(model, MOI.ObjectiveFunction{typeof(f)}(), f)
+    MOI.Utilities.set_mock_optimize!(
+        inner,
+        mock -> begin
+            MOI.set(mock, MOI.ResultCount(), 2)
+            MOI.set(mock, MOI.TerminationStatus(), MOI.OPTIMAL)
+            MOI.set(mock, MOI.PrimalStatus(1), MOI.FEASIBLE_POINT)
+            MOI.set(mock, MOI.PrimalStatus(2), MOI.FEASIBLE_POINT)
+            y = MOI.get(mock, MOI.ListOfVariableIndices())
+            MOI.set.(mock, MOI.VariablePrimal(1), y, [1.0, -0.1])
+            MOI.set.(mock, MOI.VariablePrimal(2), y, [2.0, 1.0])
+        end,
+    )
+    MOI.optimize!(model)
+    @test MOI.get(model, MOI.ObjectiveValue(1)) ≈ -0.1
+    @test MOI.get(model, MOI.VariablePrimal(1), x) ≈ 1.0
+    @test MOI.get(model, MOI.ObjectiveValue(2)) ≈ 1.0
+    @test MOI.get(model, MOI.VariablePrimal(2), x) ≈ 2.0
+    return
+end
+
 function test_original()
     mock = MOI.Utilities.MockOptimizer(MOI.Utilities.Model{Float64}())
     bridged_mock = MOI.Bridges.Objective.Slack{Float64}(mock)

test/Bridges/Objective/vector_slack.jl

@@ -166,6 +166,34 @@ function test_modify_vector_constant_change()
     return
 end
 
+function test_SlackBridge_ObjectiveFunctionValue_2()
+    inner = MOI.Utilities.MockOptimizer(MOI.Utilities.Model{Float64}())
+    model = MOI.Bridges.Objective.VectorSlack{Float64}(inner)
+    x = MOI.add_variable(model)
+    MOI.add_constraint(model, x, MOI.GreaterThan(1.0))
+    f = MOI.Utilities.operate(vcat, Float64, 1.1 * x - 1.2)
+    MOI.set(model, MOI.ObjectiveSense(), MOI.MIN_SENSE)
+    MOI.set(model, MOI.ObjectiveFunction{typeof(f)}(), f)
+    MOI.Utilities.set_mock_optimize!(
+        inner,
+        mock -> begin
+            MOI.set(mock, MOI.ResultCount(), 2)
+            MOI.set(mock, MOI.TerminationStatus(), MOI.OPTIMAL)
+            MOI.set(mock, MOI.PrimalStatus(1), MOI.FEASIBLE_POINT)
+            MOI.set(mock, MOI.PrimalStatus(2), MOI.FEASIBLE_POINT)
+            y = MOI.get(mock, MOI.ListOfVariableIndices())
+            MOI.set.(mock, MOI.VariablePrimal(1), y, [1.0, -0.1])
+            MOI.set.(mock, MOI.VariablePrimal(2), y, [2.0, 1.0])
+        end,
+    )
+    MOI.optimize!(model)
+    @test MOI.get(model, MOI.ObjectiveValue(1)) ≈ [-0.1]
+    @test MOI.get(model, MOI.VariablePrimal(1), x) ≈ 1.0
+    @test MOI.get(model, MOI.ObjectiveValue(2)) ≈ [1.0]
+    @test MOI.get(model, MOI.VariablePrimal(2), x) ≈ 2.0
+    return
+end
+
 end  # module
 
 TestObjectiveVectorSlack.runtests()