Fix various usages of MOI.delete

Author: odow

src/algorithms/Chalmet.jl

@@ -30,13 +30,14 @@ function _solve_constrained_model(
     sets = MOI.LessThan.(rhs .- 1)
     c = MOI.Utilities.normalize_and_add_constraint.(model.inner, f, sets)
     MOI.optimize!(model.inner)
-    MOI.delete.(model, c)
     status = MOI.get(model.inner, MOI.TerminationStatus())
     if !_is_scalar_status_optimal(status)
+        MOI.delete.(model, c)
         return status, nothing
     end
     variables = MOI.get(model.inner, MOI.ListOfVariableIndices())
     X, Y = _compute_point(model, variables, model.f)
+    MOI.delete.(model, c)
     return status, SolutionPoint(X, Y)
 end
 

src/algorithms/KirlikSayin.jl

@@ -161,9 +161,9 @@ function minimize_multiobjective!(algorithm::KirlikSayin, model::Optimizer)
             MOI.EqualTo(zₖ),
         )
         MOI.optimize!(model.inner)
-        MOI.delete.(model, ε_constraints)
-        MOI.delete(model, zₖ_constraint)
         if !_is_scalar_status_optimal(model)
+            MOI.delete.(model, ε_constraints)
+            MOI.delete(model, zₖ_constraint)
             _remove_rectangle(L, _Rectangle(_project(yI, k), uᵢ))
             continue
         end
@@ -175,6 +175,8 @@ function minimize_multiobjective!(algorithm::KirlikSayin, model::Optimizer)
             L = _update_list(L, Y_proj)
         end
         _remove_rectangle(L, _Rectangle(Y_proj, uᵢ))
+        MOI.delete.(model, ε_constraints)
+        MOI.delete(model, zₖ_constraint)
     end
     return status, solutions
 end

src/algorithms/TambyVanderpooten.jl

@@ -159,6 +159,7 @@ function minimize_multiobjective!(
         end
         MOI.optimize!(model.inner)
         if !_is_scalar_status_optimal(model)
+            MOI.delete.(model, ε_constraints)
             return status, nothing
         end
         y_k = MOI.get(model.inner, MOI.ObjectiveValue())
@@ -171,6 +172,8 @@ function minimize_multiobjective!(
         )
         MOI.optimize!(model.inner)
         if !_is_scalar_status_optimal(model)
+            MOI.delete.(model, ε_constraints)
+            MOI.delete(model, y_k_constraint)
             return status, nothing
         end
         X, Y = _compute_point(model, variables, model.f)