uitest/src/main/java/com/vaadin/tests/minitutorials/v7a1/UsingBeanValidation.java


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package com.vaadin.tests.minitutorials.v7a1;

import javax.validation.constraints.Max;
import javax.validation.constraints.Min;
import javax.validation.constraints.Size;

import com.vaadin.server.VaadinRequest;
import com.vaadin.ui.UI;
import com.vaadin.v7.data.util.BeanItem;
import com.vaadin.v7.data.validator.BeanValidator;
import com.vaadin.v7.ui.TextField;

/**
 * Mini tutorial code for
 * https://vaadin.com/wiki/-/wiki/Main/Using%20Bean%20Validation
 * %20to%20validate%20input
 *
 * @author Vaadin Ltd
 * @since 7.0.0
 */
public class UsingBeanValidation extends UI {
    class Person {

        @Size(min = 5, max = 50)
        private String name;

        @Min(0)
        @Max(100)
        private int age;

        // + constructor + setters + getters

        public Person(String name, int age) {
            this.name = name;
            this.age = age;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public int getAge() {
            return age;
        }
    }

    @Override
    protected void init(VaadinRequest request) {
        Person person = new Person("John", 26);
        BeanItem<Person> item = new BeanItem<>(person);

        TextField firstName = new TextField("First name",
                item.getItemProperty("name"));
        firstName.setImmediate(true);
        setContent(firstName);

        firstName.addValidator(new BeanValidator(Person.class, "name"));
    }

}