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@WebService
public class Ws {
    @Inject SpeakQuery bean;
	
    @WebMethod
    public String sayHelloSlow(String name) throws Exception {	
        return bean.sayHello(name);
    }
}

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public interface SpeakQuery {
    public String sayHello(String name) throws Exception;
}

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@Stateless
public class SimpleSpeakQuery implements SpeakQuery {
    private String message = new String("Hello, ");

    public String sayHello(String name) throws Exception {
        return message + name;
    }
}

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<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/beans_1_0.xsd">
</beans>

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<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
    <servlet>
        <servlet-name>Ws</servlet-name>
        <servlet-class>com.example.Ws</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>Ws</servlet-name>

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<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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.example</groupId>
    <artifactId>ws</artifactId>
    <name>Example Web Service</name>
    <packaging>war</packaging>
    <version>1.0.0-SNAPSHOT</version>

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...
import lombok.Data;

@Data
public class SomeDto {
    private int id;
    private String firstName;	
    private String lastName;
}

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// Generated by delombok at Mon Feb 14 20:57:05 CET 2011
package com.example;

public class SomeDto {
    private int id;
    private String firstName;
    private String lastName;
	
    @java.lang.SuppressWarnings("all")
    public SomeDto() {

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

@Data
public class SomeDto {
    @Min(0)
    private int id;
    @Size(min=2, max=8)

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...
import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.ValidatorFactory;
...
public static void myValidator(SomeBean someBean) {
    ...
    ValidatorFactory validatorFactory = Validation.buildDefaultValidatorFactory();
    Validator validator = validatorFactory.getValidator();