Merge pull request #87 from hdavid16/dev

use @constraint

src/hull.jl

@@ -36,14 +36,8 @@ function _disaggregate_variable(model::Model, lvref::LogicalVariableRef, vref::V
     dvname = name(dvref)
     lbname = isempty(dvname) ? "" : "$(dvname)_lower_bound"
     ubname = isempty(dvname) ? "" : "$(dvname)_upper_bound"
-    new_con_lb_ref = add_constraint(model,
-        build_constraint(error, lb*bvref - dvref, _MOI.LessThan(0)),
-        lbname
-    )
-    new_con_ub_ref = add_constraint(model,
-        build_constraint(error, dvref - ub*bvref, _MOI.LessThan(0)),
-        ubname
-    )
+    new_con_lb_ref = @constraint(model, lb*bvref - dvref <= 0, base_name = lbname)
+    new_con_ub_ref = @constraint(model, dvref - ub*bvref <= 0, base_name = ubname)
     push!(_reformulation_constraints(model), new_con_lb_ref, new_con_ub_ref)
     return dvref
 end

src/logic.jl

@@ -222,18 +222,14 @@ function _reformulate_selector(model::Model, func, set::Union{_MOIAtLeast, _MOIA
     dict = _indicator_to_binary(model)
     bvrefs = [dict[lvref] for lvref in func[2:end]]
     new_set = _vec_to_scalar_set(set)(func[1].constant)
-    cref = add_constraint(model,
-        build_constraint(error, @expression(model, sum(bvrefs)), new_set)
-    )
+    cref = @constraint(model, sum(bvrefs) in new_set)
     push!(_reformulation_constraints(model), cref)
 end
 function _reformulate_selector(model::Model, func::Vector{LogicalVariableRef}, set::Union{_MOIAtLeast, _MOIAtMost, _MOIExactly})
     dict = _indicator_to_binary(model)
     bvref, bvrefs... = [dict[lvref] for lvref in func]
     new_set = _vec_to_scalar_set(set)(0)
-    cref = add_constraint(model,
-        build_constraint(error, @expression(model, sum(bvrefs) - bvref), new_set)
-    )
+    cref = @constraint(model, sum(bvrefs) - bvref in new_set)
     push!(_reformulation_constraints(model), cref)
 end
 
@@ -261,8 +257,7 @@ _isa_literal(v) = false
 function _add_reformulated_proposition(model::Model, arg::Union{LogicalVariableRef,_LogicalExpr})
     func = _reformulate_clause(model, arg)
     if !isempty(func.terms) && !all(iszero.(values(func.terms)))
-        con = build_constraint(error, func, _MOI.GreaterThan(1))
-        cref = add_constraint(model, con)
+        cref = @constraint(model, func >= 1)
         push!(_reformulation_constraints(model), cref)
     end
     return