Struct vrp_core::models::problem::VehicleDetailBuilder

source · 
pub struct VehicleDetailBuilder(/* private fields */);
Expand description

Provides a way to build VehicleDetail.

Implementations§

source§

impl VehicleDetailBuilder

source

pub fn set_start_location(self, location: Location) -> Self

Sets start location.

Examples found in repository?
examples/custom_objective.rs (line 103)
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fn define_problem(goal: GoalContext, transport: Arc<dyn TransportCost + Send + Sync>) -> GenericResult<Problem> {
    // create 4 jobs where two are having top prio
    let single_jobs = (1..=4)
        .map(|idx| {
            SingleBuilder::default()
                .id(format!("job{idx}").as_str())
                .demand(Demand::delivery(1))
                .dimension(|dimens| {
                    // mark two jobs as top priority (2 and 4 locations)
                    dimens.set_job_priority(idx % 2 == 0);
                })
                .location(idx)?
                .build_as_job()
        })
        .collect::<Result<Vec<_>, _>>()?;

    // define a single vehicle with limited capacity which doesn't need to return back to the depot
    let vehicle = VehicleBuilder::default()
        .id("v1".to_string().as_str())
        .add_detail(VehicleDetailBuilder::default().set_start_location(0).build()?)
        // only two jobs can be served by the vehicle
        .capacity(SingleDimLoad::new(2))
        .build()?;

    ProblemBuilder::default()
        .add_jobs(single_jobs.into_iter())
        .add_vehicles(once(vehicle))
        .with_goal(goal)
        .with_transport_cost(transport)
        .build()
}
More examples
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examples/cvrp.rs (line 42)
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fn define_problem(goal: GoalContext, transport: Arc<dyn TransportCost + Send + Sync>) -> GenericResult<Problem> {
    // create 4 jobs with location indices from 1 to 4
    let single_jobs = (1..=4)
        .map(|idx| {
            SingleBuilder::default()
                .id(format!("job{idx}").as_str())
                // each job is delivery job with demand=1
                .demand(Demand::delivery(1))
                // job has location, which is an index in routing matrix
                .location(idx)?
                .build_as_job()
        })
        .collect::<Result<Vec<_>, _>>()?;

    // create 4 vehicles
    let vehicles = (1..=4)
        .map(|idx| {
            VehicleBuilder::default()
                .id(format!("v{idx}").as_str())
                .add_detail(
                    VehicleDetailBuilder::default()
                        // vehicle starts at location with index 0 in routing matrix
                        .set_start_location(0)
                        // vehicle should return to location with index 0
                        .set_end_location(0)
                        .build()?,
                )
                // each vehicle has capacity=2, so it can serve at most 2 jobs
                .capacity(SingleDimLoad::new(2))
                .build()
        })
        .collect::<Result<Vec<_>, _>>()?;

    ProblemBuilder::default()
        .add_jobs(single_jobs.into_iter())
        .add_vehicles(vehicles.into_iter())
        .with_goal(goal)
        .with_transport_cost(transport)
        .build()
}
examples/custom_constraint.rs (line 76)
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fn define_problem(goal: GoalContext, transport: Arc<dyn TransportCost + Send + Sync>) -> GenericResult<Problem> {
    // create 4 jobs when second and forth have fridge requirement
    let single_jobs = (1..=4)
        .map(|idx| {
            SingleBuilder::default()
                .id(format!("job{idx}").as_str())
                .demand(Demand::delivery(1))
                .dimension(|dimens| {
                    // all jobs have fridge requirements, but only one vehicle will be allowed to serve them
                    dimens.set_job_hardware("fridge".to_string());
                })
                .location(idx)?
                .build_as_job()
        })
        .collect::<Result<Vec<_>, _>>()?;

    // create 2 vehicles
    let vehicles = (1..=2)
        .map(|idx| {
            VehicleBuilder::default()
                .id(format!("v{idx}").as_str())
                .add_detail(
                    VehicleDetailBuilder::default()
                        // vehicle starts at location with index 0 in routing matrix
                        .set_start_location(0)
                        // vehicle should return to location with index 0
                        .set_end_location(0)
                        .build()?,
                )
                .dimension(|dimens| {
                    if idx % 2 == 0 {
                        // only one vehicle has a hardware requirement set to 'fridge'
                        dimens.set_vehicle_hardware(once("fridge".to_string()).collect());
                    }
                })
                // each vehicle has capacity=2, so it can serve at most 2 jobs
                .capacity(SingleDimLoad::new(2))
                .build()
        })
        .collect::<Result<Vec<_>, _>>()?;

    ProblemBuilder::default()
        .add_jobs(single_jobs.into_iter())
        .add_vehicles(vehicles.into_iter())
        .with_goal(goal)
        .with_transport_cost(transport)
        .build()
}
examples/pdptw.rs (line 55)
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fn define_problem(goal: GoalContext, transport: Arc<dyn TransportCost + Send + Sync>) -> GenericResult<Problem> {
    // build two PUDO (pick up/drop off) jobs with demand=1 and permissive time windows (just to show API usage)
    let pudos = (1..=2)
        .map(|idx| {
            let location_idx = if idx == 1 { 1 } else { 3 };
            MultiBuilder::default()
                .id(format!("pudo{idx}").as_str())
                .add_job(
                    SingleBuilder::default()
                        .demand(Demand::pudo_pickup(1))
                        .times(vec![TimeWindow::new(0., 1000.)])?
                        .duration(10.)?
                        .location(location_idx)?
                        .build()?,
                )
                .add_job(
                    SingleBuilder::default()
                        .demand(Demand::pudo_delivery(1))
                        .times(vec![TimeWindow::new(0., 1000.)])?
                        .duration(10.)?
                        .location(location_idx + 1)?
                        .build()?,
                )
                .build_as_job()
        })
        .collect::<Result<Vec<_>, _>>()?;

    // define a single vehicle with limited capacity
    let vehicle = VehicleBuilder::default()
        .id("v1".to_string().as_str())
        .add_detail(
            VehicleDetailBuilder::default()
                // vehicle starts at location with index 0 in routing matrix
                .set_start_location(0)
                .set_start_time(0.)
                // vehicle should return to location with index 0
                .set_end_location(0)
                .set_end_time(10000.)
                .build()?,
        )
        // the vehicle has capacity=1, so it is forced to do delivery after each pickup
        .capacity(SingleDimLoad::new(1))
        .build()?;

    ProblemBuilder::default()
        .add_jobs(pudos.into_iter())
        .add_vehicles(once(vehicle))
        .with_goal(goal)
        .with_transport_cost(transport)
        .build()
}
source

pub fn set_start_time(self, earliest: Timestamp) -> Self

Sets earliest departure time for start location.

Examples found in repository?
examples/pdptw.rs (line 56)
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fn define_problem(goal: GoalContext, transport: Arc<dyn TransportCost + Send + Sync>) -> GenericResult<Problem> {
    // build two PUDO (pick up/drop off) jobs with demand=1 and permissive time windows (just to show API usage)
    let pudos = (1..=2)
        .map(|idx| {
            let location_idx = if idx == 1 { 1 } else { 3 };
            MultiBuilder::default()
                .id(format!("pudo{idx}").as_str())
                .add_job(
                    SingleBuilder::default()
                        .demand(Demand::pudo_pickup(1))
                        .times(vec![TimeWindow::new(0., 1000.)])?
                        .duration(10.)?
                        .location(location_idx)?
                        .build()?,
                )
                .add_job(
                    SingleBuilder::default()
                        .demand(Demand::pudo_delivery(1))
                        .times(vec![TimeWindow::new(0., 1000.)])?
                        .duration(10.)?
                        .location(location_idx + 1)?
                        .build()?,
                )
                .build_as_job()
        })
        .collect::<Result<Vec<_>, _>>()?;

    // define a single vehicle with limited capacity
    let vehicle = VehicleBuilder::default()
        .id("v1".to_string().as_str())
        .add_detail(
            VehicleDetailBuilder::default()
                // vehicle starts at location with index 0 in routing matrix
                .set_start_location(0)
                .set_start_time(0.)
                // vehicle should return to location with index 0
                .set_end_location(0)
                .set_end_time(10000.)
                .build()?,
        )
        // the vehicle has capacity=1, so it is forced to do delivery after each pickup
        .capacity(SingleDimLoad::new(1))
        .build()?;

    ProblemBuilder::default()
        .add_jobs(pudos.into_iter())
        .add_vehicles(once(vehicle))
        .with_goal(goal)
        .with_transport_cost(transport)
        .build()
}
source

pub fn set_start_time_latest(self, latest: Timestamp) -> Self

Sets a latest departure time to enable departure time optimization (disabled implicitly with set_start_time call).

source

pub fn set_end_location(self, location: Location) -> Self

Sets end location.

Examples found in repository?
examples/cvrp.rs (line 44)
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fn define_problem(goal: GoalContext, transport: Arc<dyn TransportCost + Send + Sync>) -> GenericResult<Problem> {
    // create 4 jobs with location indices from 1 to 4
    let single_jobs = (1..=4)
        .map(|idx| {
            SingleBuilder::default()
                .id(format!("job{idx}").as_str())
                // each job is delivery job with demand=1
                .demand(Demand::delivery(1))
                // job has location, which is an index in routing matrix
                .location(idx)?
                .build_as_job()
        })
        .collect::<Result<Vec<_>, _>>()?;

    // create 4 vehicles
    let vehicles = (1..=4)
        .map(|idx| {
            VehicleBuilder::default()
                .id(format!("v{idx}").as_str())
                .add_detail(
                    VehicleDetailBuilder::default()
                        // vehicle starts at location with index 0 in routing matrix
                        .set_start_location(0)
                        // vehicle should return to location with index 0
                        .set_end_location(0)
                        .build()?,
                )
                // each vehicle has capacity=2, so it can serve at most 2 jobs
                .capacity(SingleDimLoad::new(2))
                .build()
        })
        .collect::<Result<Vec<_>, _>>()?;

    ProblemBuilder::default()
        .add_jobs(single_jobs.into_iter())
        .add_vehicles(vehicles.into_iter())
        .with_goal(goal)
        .with_transport_cost(transport)
        .build()
}
More examples
Hide additional examples
examples/custom_constraint.rs (line 78)
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fn define_problem(goal: GoalContext, transport: Arc<dyn TransportCost + Send + Sync>) -> GenericResult<Problem> {
    // create 4 jobs when second and forth have fridge requirement
    let single_jobs = (1..=4)
        .map(|idx| {
            SingleBuilder::default()
                .id(format!("job{idx}").as_str())
                .demand(Demand::delivery(1))
                .dimension(|dimens| {
                    // all jobs have fridge requirements, but only one vehicle will be allowed to serve them
                    dimens.set_job_hardware("fridge".to_string());
                })
                .location(idx)?
                .build_as_job()
        })
        .collect::<Result<Vec<_>, _>>()?;

    // create 2 vehicles
    let vehicles = (1..=2)
        .map(|idx| {
            VehicleBuilder::default()
                .id(format!("v{idx}").as_str())
                .add_detail(
                    VehicleDetailBuilder::default()
                        // vehicle starts at location with index 0 in routing matrix
                        .set_start_location(0)
                        // vehicle should return to location with index 0
                        .set_end_location(0)
                        .build()?,
                )
                .dimension(|dimens| {
                    if idx % 2 == 0 {
                        // only one vehicle has a hardware requirement set to 'fridge'
                        dimens.set_vehicle_hardware(once("fridge".to_string()).collect());
                    }
                })
                // each vehicle has capacity=2, so it can serve at most 2 jobs
                .capacity(SingleDimLoad::new(2))
                .build()
        })
        .collect::<Result<Vec<_>, _>>()?;

    ProblemBuilder::default()
        .add_jobs(single_jobs.into_iter())
        .add_vehicles(vehicles.into_iter())
        .with_goal(goal)
        .with_transport_cost(transport)
        .build()
}
examples/pdptw.rs (line 58)
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fn define_problem(goal: GoalContext, transport: Arc<dyn TransportCost + Send + Sync>) -> GenericResult<Problem> {
    // build two PUDO (pick up/drop off) jobs with demand=1 and permissive time windows (just to show API usage)
    let pudos = (1..=2)
        .map(|idx| {
            let location_idx = if idx == 1 { 1 } else { 3 };
            MultiBuilder::default()
                .id(format!("pudo{idx}").as_str())
                .add_job(
                    SingleBuilder::default()
                        .demand(Demand::pudo_pickup(1))
                        .times(vec![TimeWindow::new(0., 1000.)])?
                        .duration(10.)?
                        .location(location_idx)?
                        .build()?,
                )
                .add_job(
                    SingleBuilder::default()
                        .demand(Demand::pudo_delivery(1))
                        .times(vec![TimeWindow::new(0., 1000.)])?
                        .duration(10.)?
                        .location(location_idx + 1)?
                        .build()?,
                )
                .build_as_job()
        })
        .collect::<Result<Vec<_>, _>>()?;

    // define a single vehicle with limited capacity
    let vehicle = VehicleBuilder::default()
        .id("v1".to_string().as_str())
        .add_detail(
            VehicleDetailBuilder::default()
                // vehicle starts at location with index 0 in routing matrix
                .set_start_location(0)
                .set_start_time(0.)
                // vehicle should return to location with index 0
                .set_end_location(0)
                .set_end_time(10000.)
                .build()?,
        )
        // the vehicle has capacity=1, so it is forced to do delivery after each pickup
        .capacity(SingleDimLoad::new(1))
        .build()?;

    ProblemBuilder::default()
        .add_jobs(pudos.into_iter())
        .add_vehicles(once(vehicle))
        .with_goal(goal)
        .with_transport_cost(transport)
        .build()
}
source

pub fn set_end_time(self, latest: Timestamp) -> Self

Sets the latest arrival time for end location.

Examples found in repository?
examples/pdptw.rs (line 59)
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fn define_problem(goal: GoalContext, transport: Arc<dyn TransportCost + Send + Sync>) -> GenericResult<Problem> {
    // build two PUDO (pick up/drop off) jobs with demand=1 and permissive time windows (just to show API usage)
    let pudos = (1..=2)
        .map(|idx| {
            let location_idx = if idx == 1 { 1 } else { 3 };
            MultiBuilder::default()
                .id(format!("pudo{idx}").as_str())
                .add_job(
                    SingleBuilder::default()
                        .demand(Demand::pudo_pickup(1))
                        .times(vec![TimeWindow::new(0., 1000.)])?
                        .duration(10.)?
                        .location(location_idx)?
                        .build()?,
                )
                .add_job(
                    SingleBuilder::default()
                        .demand(Demand::pudo_delivery(1))
                        .times(vec![TimeWindow::new(0., 1000.)])?
                        .duration(10.)?
                        .location(location_idx + 1)?
                        .build()?,
                )
                .build_as_job()
        })
        .collect::<Result<Vec<_>, _>>()?;

    // define a single vehicle with limited capacity
    let vehicle = VehicleBuilder::default()
        .id("v1".to_string().as_str())
        .add_detail(
            VehicleDetailBuilder::default()
                // vehicle starts at location with index 0 in routing matrix
                .set_start_location(0)
                .set_start_time(0.)
                // vehicle should return to location with index 0
                .set_end_location(0)
                .set_end_time(10000.)
                .build()?,
        )
        // the vehicle has capacity=1, so it is forced to do delivery after each pickup
        .capacity(SingleDimLoad::new(1))
        .build()?;

    ProblemBuilder::default()
        .add_jobs(pudos.into_iter())
        .add_vehicles(once(vehicle))
        .with_goal(goal)
        .with_transport_cost(transport)
        .build()
}
source

pub fn build(self) -> GenericResult<VehicleDetail>

Builds vehicle detail.

Examples found in repository?
examples/custom_objective.rs (line 103)
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fn define_problem(goal: GoalContext, transport: Arc<dyn TransportCost + Send + Sync>) -> GenericResult<Problem> {
    // create 4 jobs where two are having top prio
    let single_jobs = (1..=4)
        .map(|idx| {
            SingleBuilder::default()
                .id(format!("job{idx}").as_str())
                .demand(Demand::delivery(1))
                .dimension(|dimens| {
                    // mark two jobs as top priority (2 and 4 locations)
                    dimens.set_job_priority(idx % 2 == 0);
                })
                .location(idx)?
                .build_as_job()
        })
        .collect::<Result<Vec<_>, _>>()?;

    // define a single vehicle with limited capacity which doesn't need to return back to the depot
    let vehicle = VehicleBuilder::default()
        .id("v1".to_string().as_str())
        .add_detail(VehicleDetailBuilder::default().set_start_location(0).build()?)
        // only two jobs can be served by the vehicle
        .capacity(SingleDimLoad::new(2))
        .build()?;

    ProblemBuilder::default()
        .add_jobs(single_jobs.into_iter())
        .add_vehicles(once(vehicle))
        .with_goal(goal)
        .with_transport_cost(transport)
        .build()
}
More examples
Hide additional examples
examples/cvrp.rs (line 45)
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fn define_problem(goal: GoalContext, transport: Arc<dyn TransportCost + Send + Sync>) -> GenericResult<Problem> {
    // create 4 jobs with location indices from 1 to 4
    let single_jobs = (1..=4)
        .map(|idx| {
            SingleBuilder::default()
                .id(format!("job{idx}").as_str())
                // each job is delivery job with demand=1
                .demand(Demand::delivery(1))
                // job has location, which is an index in routing matrix
                .location(idx)?
                .build_as_job()
        })
        .collect::<Result<Vec<_>, _>>()?;

    // create 4 vehicles
    let vehicles = (1..=4)
        .map(|idx| {
            VehicleBuilder::default()
                .id(format!("v{idx}").as_str())
                .add_detail(
                    VehicleDetailBuilder::default()
                        // vehicle starts at location with index 0 in routing matrix
                        .set_start_location(0)
                        // vehicle should return to location with index 0
                        .set_end_location(0)
                        .build()?,
                )
                // each vehicle has capacity=2, so it can serve at most 2 jobs
                .capacity(SingleDimLoad::new(2))
                .build()
        })
        .collect::<Result<Vec<_>, _>>()?;

    ProblemBuilder::default()
        .add_jobs(single_jobs.into_iter())
        .add_vehicles(vehicles.into_iter())
        .with_goal(goal)
        .with_transport_cost(transport)
        .build()
}
examples/custom_constraint.rs (line 79)
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fn define_problem(goal: GoalContext, transport: Arc<dyn TransportCost + Send + Sync>) -> GenericResult<Problem> {
    // create 4 jobs when second and forth have fridge requirement
    let single_jobs = (1..=4)
        .map(|idx| {
            SingleBuilder::default()
                .id(format!("job{idx}").as_str())
                .demand(Demand::delivery(1))
                .dimension(|dimens| {
                    // all jobs have fridge requirements, but only one vehicle will be allowed to serve them
                    dimens.set_job_hardware("fridge".to_string());
                })
                .location(idx)?
                .build_as_job()
        })
        .collect::<Result<Vec<_>, _>>()?;

    // create 2 vehicles
    let vehicles = (1..=2)
        .map(|idx| {
            VehicleBuilder::default()
                .id(format!("v{idx}").as_str())
                .add_detail(
                    VehicleDetailBuilder::default()
                        // vehicle starts at location with index 0 in routing matrix
                        .set_start_location(0)
                        // vehicle should return to location with index 0
                        .set_end_location(0)
                        .build()?,
                )
                .dimension(|dimens| {
                    if idx % 2 == 0 {
                        // only one vehicle has a hardware requirement set to 'fridge'
                        dimens.set_vehicle_hardware(once("fridge".to_string()).collect());
                    }
                })
                // each vehicle has capacity=2, so it can serve at most 2 jobs
                .capacity(SingleDimLoad::new(2))
                .build()
        })
        .collect::<Result<Vec<_>, _>>()?;

    ProblemBuilder::default()
        .add_jobs(single_jobs.into_iter())
        .add_vehicles(vehicles.into_iter())
        .with_goal(goal)
        .with_transport_cost(transport)
        .build()
}
examples/pdptw.rs (line 60)
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fn define_problem(goal: GoalContext, transport: Arc<dyn TransportCost + Send + Sync>) -> GenericResult<Problem> {
    // build two PUDO (pick up/drop off) jobs with demand=1 and permissive time windows (just to show API usage)
    let pudos = (1..=2)
        .map(|idx| {
            let location_idx = if idx == 1 { 1 } else { 3 };
            MultiBuilder::default()
                .id(format!("pudo{idx}").as_str())
                .add_job(
                    SingleBuilder::default()
                        .demand(Demand::pudo_pickup(1))
                        .times(vec![TimeWindow::new(0., 1000.)])?
                        .duration(10.)?
                        .location(location_idx)?
                        .build()?,
                )
                .add_job(
                    SingleBuilder::default()
                        .demand(Demand::pudo_delivery(1))
                        .times(vec![TimeWindow::new(0., 1000.)])?
                        .duration(10.)?
                        .location(location_idx + 1)?
                        .build()?,
                )
                .build_as_job()
        })
        .collect::<Result<Vec<_>, _>>()?;

    // define a single vehicle with limited capacity
    let vehicle = VehicleBuilder::default()
        .id("v1".to_string().as_str())
        .add_detail(
            VehicleDetailBuilder::default()
                // vehicle starts at location with index 0 in routing matrix
                .set_start_location(0)
                .set_start_time(0.)
                // vehicle should return to location with index 0
                .set_end_location(0)
                .set_end_time(10000.)
                .build()?,
        )
        // the vehicle has capacity=1, so it is forced to do delivery after each pickup
        .capacity(SingleDimLoad::new(1))
        .build()?;

    ProblemBuilder::default()
        .add_jobs(pudos.into_iter())
        .add_vehicles(once(vehicle))
        .with_goal(goal)
        .with_transport_cost(transport)
        .build()
}

Trait Implementations§

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impl Default for VehicleDetailBuilder

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fn default() -> Self

Returns the “default value” for a type. Read more

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