Bean Validation Hello World - Maven Standalone!

Hello JSR 349, but what is all with Red Hat and JBoss?

Some useful links first: this, this and this!

Sample Code

Directory Layout

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
                             http://maven.apache.org/xsd/maven-4.0.0.xsd">
 
    <modelVersion>4.0.0</modelVersion>
 
    <groupId>biz.tugay</groupId>
    <artifactId>validation-examples</artifactId>
    <version>1.0-SNAPSHOT</version>
 
    <dependencies>
        <dependency>
            <groupId>javax.validation</groupId>
            <artifactId>validation-api</artifactId>
            <version>1.1.0.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>5.3.0.Final</version>
        </dependency>
        <dependency>
            <groupId>javax.el</groupId>
            <artifactId>javax.el-api</artifactId>
            <version>2.2.4</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.glassfish.web</groupId>
            <artifactId>javax.el</artifactId>
            <version>2.2.4</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
 
</project>

Employee.java

package biz.tugay.validation;
 
import javax.validation.constraints.NotNull;
 
/**
 * User: Koray Tugay (koray@tugay.biz)
 * Date: 11/4/2016
 * Time: 7:44 PM
 */
public class Employee {
 
    @NotNull
    private String fullname;
 
    public Employee(final String fullname) {
        this.fullname = fullname;
    }
 
    @SuppressWarnings("unused")
    public String getFullname() {
        return fullname;
    }
}

mymessages.properties

javax.validation.constraints.NotNull.message=This value can not be null!

BaseValidatorTest.java

package biz.tugay.validation;
 
import org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator;
import org.hibernate.validator.resourceloading.PlatformResourceBundleLocator;
 
import javax.validation.Validation;
import javax.validation.Validator;
 
/**
 * User: Koray Tugay (koray@tugay.biz)
 * Date: 11/4/2016
 * Time: 7:55 PM
 */
public abstract class BaseValidatorTest {
 
    // Validator must be cached!
    protected static Validator validator;
 
    static {
        validator = Validation.byDefaultProvider()
                .configure()
                .messageInterpolator(
                        new ResourceBundleMessageInterpolator(
                                new PlatformResourceBundleLocator("mymessages")))
                .buildValidatorFactory()
                .getValidator();
    }
}

EmployeeTest.java

package biz.tugay.validation;
 
import org.junit.Assert;
import org.junit.Test;
 
import javax.validation.ConstraintViolation;
import java.util.Set;
 
/**
 * User: Koray Tugay (koray@tugay.biz)
 * Date: 11/4/2016
 * Time: 7:45 PM
 */
public class EmployeeTest extends BaseValidatorTest {
 
    @Test
    public void testEmployeeFullnameCannotBeNull() {
        final Employee mySampleObject = new Employee(null);
 
        final Set<ConstraintViolation<Employee>> constraintViolations = validator.validate(mySampleObject);
 
        Assert.assertTrue(constraintViolations.size() == 1);
        for (ConstraintViolation<Employee> constraintViolation : constraintViolations) {
            final String message = constraintViolation.getMessage();
            System.out.println(constraintViolation.getMessage());
            System.out.println(constraintViolation.getMessageTemplate());
            Assert.assertTrue(message.equals("This value can not be null!"));
        }
    }
 
    @Test
    public void testEmployeeFullnameNotNull() {
        final Employee employee = new Employee("Koray Tugay");
 
        final Set<ConstraintViolation<Employee>> constraintViolations = validator.validate(employee);
        Assert.assertTrue(constraintViolations.isEmpty());
    }
}

In Action