Hibernate Validator 中文操作指南

package org.hibernate.validator.referenceguide.chapter02.containerelement.set;

public class Car {

    private Set<@ValidPart String> parts = new HashSet<>();

    public void addPart(String part) {
        parts.add( part );
    }

    //...

}

Car car = new Car();
car.addPart( "Wheel" );
car.addPart( null );

Set<ConstraintViolation<Car>> constraintViolations = validator.validate( car );

assertEquals( 1, constraintViolations.size() );

ConstraintViolation<Car> constraintViolation =
        constraintViolations.iterator().next();
assertEquals(
        "'null' is not a valid car part.",
        constraintViolation.getMessage()
);
assertEquals( "parts[].<iterable element>",
        constraintViolation.getPropertyPath().toString() );

package org.hibernate.validator.referenceguide.chapter02.containerelement.list;

public class Car {

    private List<@ValidPart String> parts = new ArrayList<>();

    public void addPart(String part) {
        parts.add( part );
    }

    //...

}

Car car = new Car();
car.addPart( "Wheel" );
car.addPart( null );

Set<ConstraintViolation<Car>> constraintViolations = validator.validate( car );

assertEquals( 1, constraintViolations.size() );

ConstraintViolation<Car> constraintViolation =
        constraintViolations.iterator().next();
assertEquals(
        "'null' is not a valid car part.",
        constraintViolation.getMessage()
);
assertEquals( "parts[1].<list element>",
        constraintViolation.getPropertyPath().toString() );

package org.hibernate.validator.referenceguide.chapter02.containerelement.map;

public class Car {

    public enum FuelConsumption {
        CITY,
        HIGHWAY
    }

    private Map<@NotNull FuelConsumption, @MaxAllowedFuelConsumption Integer> fuelConsumption = new HashMap<>();

    public void setFuelConsumption(FuelConsumption consumption, int value) {
        fuelConsumption.put( consumption, value );
    }

    //...

}

Car car = new Car();
car.setFuelConsumption( Car.FuelConsumption.HIGHWAY, 20 );

Set<ConstraintViolation<Car>> constraintViolations = validator.validate( car );

assertEquals( 1, constraintViolations.size() );

ConstraintViolation<Car> constraintViolation =
        constraintViolations.iterator().next();
assertEquals(
        "20 is outside the max fuel consumption.",
        constraintViolation.getMessage()
);
assertEquals(
        "fuelConsumption[HIGHWAY].<map value>",
        constraintViolation.getPropertyPath().toString()
);

Car car = new Car();
car.setFuelConsumption( null, 5 );

Set<ConstraintViolation<Car>> constraintViolations = validator.validate( car );

assertEquals( 1, constraintViolations.size() );

ConstraintViolation<Car> constraintViolation =
        constraintViolations.iterator().next();
assertEquals(
        "must not be null",
        constraintViolation.getMessage()
);
assertEquals(
        "fuelConsumption<K>[].<map key>",
        constraintViolation.getPropertyPath().toString()
);

package org.hibernate.validator.referenceguide.chapter02.containerelement.optional;

public class Car {

    private Optional<@MinTowingCapacity(1000) Integer> towingCapacity = Optional.empty();

    public void setTowingCapacity(Integer alias) {
        towingCapacity = Optional.of( alias );
    }

    //...

}

Car car = new Car();
car.setTowingCapacity( 100 );

Set<ConstraintViolation<Car>> constraintViolations = validator.validate( car );

assertEquals( 1, constraintViolations.size() );

ConstraintViolation<Car> constraintViolation = constraintViolations.iterator().next();
assertEquals(
        "Not enough towing capacity.",
        constraintViolation.getMessage()
);
assertEquals(
        "towingCapacity",
        constraintViolation.getPropertyPath().toString()
);

package org.hibernate.validator.referenceguide.chapter02.containerelement.custom;

public class Car {

    private GearBox<@MinTorque(100) Gear> gearBox;

    public void setGearBox(GearBox<Gear> gearBox) {
        this.gearBox = gearBox;
    }

    //...

}

package org.hibernate.validator.referenceguide.chapter02.containerelement.custom;

public class GearBox<T extends Gear> {

    private final T gear;

    public GearBox(T gear) {
        this.gear = gear;
    }

    public Gear getGear() {
        return this.gear;
    }
}

package org.hibernate.validator.referenceguide.chapter02.containerelement.custom;

public class Gear {
    private final Integer torque;

    public Gear(Integer torque) {
        this.torque = torque;
    }

    public Integer getTorque() {
        return torque;
    }

    public static class AcmeGear extends Gear {
        public AcmeGear() {
            super( 60 );
        }
    }
}

package org.hibernate.validator.referenceguide.chapter02.containerelement.custom;

public class GearBoxValueExtractor implements ValueExtractor<GearBox<@ExtractedValue ?>> {

    @Override
    public void extractValues(GearBox<@ExtractedValue ?> originalValue, ValueExtractor.ValueReceiver receiver) {
        receiver.value( null, originalValue.getGear() );
    }
}

Car car = new Car();
car.setGearBox( new GearBox<>( new Gear.AcmeGear() ) );

Set<ConstraintViolation<Car>> constraintViolations = validator.validate( car );
assertEquals( 1, constraintViolations.size() );

ConstraintViolation<Car> constraintViolation =
        constraintViolations.iterator().next();
assertEquals(
        "Gear is not providing enough torque.",
        constraintViolation.getMessage()
);
assertEquals(
        "gearBox",
        constraintViolation.getPropertyPath().toString()
);

package org.hibernate.validator.referenceguide.chapter02.containerelement.nested;

public class Car {

    private Map<@NotNull Part, List<@NotNull Manufacturer>> partManufacturers =
            new HashMap<>();

    //...
}

Car car = new Car( null, true );

Set<ConstraintViolation<Car>> constraintViolations = validator.validate( car );

assertEquals( 1, constraintViolations.size() );
assertEquals( "must not be null", constraintViolations.iterator().next().getMessage() );

Car car = new Car( null, true );

Set<ConstraintViolation<Car>> constraintViolations = validator.validateProperty(
        car,
        "manufacturer"
);

assertEquals( 1, constraintViolations.size() );
assertEquals( "must not be null", constraintViolations.iterator().next().getMessage() );

Set<ConstraintViolation<Car>> constraintViolations = validator.validateValue(
        Car.class,
        "manufacturer",
        null
);

assertEquals( 1, constraintViolations.size() );
assertEquals( "must not be null", constraintViolations.iterator().next().getMessage() );