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Create ProcessNode and ShippingNode structs

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This commit is contained in:
Alinson S. Xavier
2020-03-18 11:09:54 -05:00
parent ba28c350e0
commit c55c6cc828
2 changed files with 25 additions and 31 deletions
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52
src/model.jl
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@@ -11,39 +11,33 @@ mutable struct ReverseManufacturingModel
process_nodes
end
mutable struct Node
abstract type Node
end
mutable struct ProcessNode <: Node
product_name::String
plant_name::String
location_name::String
balance::Float64
incoming_arcs::Array
outgoing_arcs::Array
cost::Float64
fixed_cost::Float64
end
function Node(product_name::String,
plant_name::String,
location_name::String;
balance::Float64 = 0.0,
incoming_arcs::Array = [],
outgoing_arcs::Array = [],
cost::Float64 = 0.0,
) :: Node
return Node(product_name,
plant_name,
location_name,
balance,
incoming_arcs,
outgoing_arcs,
cost)
mutable struct ShippingNode <: Node
product_name::String
plant_name::String
location_name::String
incoming_arcs::Array
outgoing_arcs::Array
balance::Float64
end
function Base.show(io::IO, node::Node)
print(io, "Node($(node.product_name), $(node.plant_name), $(node.location_name)")
if node.balance != 0.0
print(io, ", $(node.balance)")
end
print(io, ")")
function Base.show(io::IO, node::ProcessNode)
print(io, "ProcessNode($(node.product_name), $(node.plant_name), $(node.location_name), $(node.fixed_cost))")
end
function Base.show(io::IO, node::ShippingNode)
print(io, "ShippingNode($(node.product_name), $(node.plant_name), $(node.location_name), $(node.balance))")
end
mutable struct Arc
@@ -92,7 +86,7 @@ function build_model(instance::ReverseManufacturingInstance,
end
end
for n in tqdm(values(process_nodes))
add_to_expression!(obj, n.cost, vars.node[n])
add_to_expression!(obj, n.fixed_cost, vars.node[n])
end
@objective(mip, Min, obj)
@@ -138,7 +132,7 @@ function create_nodes_and_arcs(instance)
if haskey(product, "initial amounts")
for location_name in keys(product["initial amounts"])
amount = product["initial amounts"][location_name]["amount"]
n = Node(product_name, "Origin", location_name, balance=amount)
n = ShippingNode(product_name, "Origin", location_name, [], [], amount)
shipping_nodes[n.product_name, n.plant_name, n.location_name] = n
end
end
@@ -147,7 +141,7 @@ function create_nodes_and_arcs(instance)
for plant in product["input plants"]
for (location_name, location) in plant["locations"]
cost = location["opening cost"] + location["fixed operating cost"]
n = Node(product_name, plant["name"], location_name, cost=cost)
n = ProcessNode(product_name, plant["name"], location_name, [], [], cost)
process_nodes[n.product_name, n.plant_name, n.location_name] = n
end
end
@@ -155,7 +149,7 @@ function create_nodes_and_arcs(instance)
# Shipping nodes for each plant
for plant in product["output plants"]
for location_name in keys(plant["locations"])
n = Node(product_name, plant["name"], location_name)
n = ShippingNode(product_name, plant["name"], location_name, [], [], 0)
shipping_nodes[n.product_name, n.plant_name, n.location_name] = n
end
end
@@ -288,7 +282,7 @@ function get_solution(instance::ReverseManufacturingInstance,
"longitude" => location["longitude"],
)
plant_loc_dict["fixed cost"] = round(vals[process_node] * process_node.cost, digits=5)
plant_loc_dict["fixed cost"] = round(vals[process_node] * process_node.fixed_cost, digits=5)
output["costs"]["fixed"] += plant_loc_dict["fixed cost"]
# Inputs