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Basic examples on cdi and beans validation

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Giovanni Di Grezia
2015-04-30 01:33:05 +02:00
commit 23bf95316c
31 changed files with 878 additions and 0 deletions
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13
general/LoggingProducer.java Normal file
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package general;
import javax.enterprise.inject.Produces;
import java.util.logging.Logger;
public class LoggingProducer {
@Produces
public Logger produceLogger() {
return Logger.getLogger("xglogger");
}
}

56
servlet/Servlettest1.java Normal file
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package servlet;
import test1_cdi.*;
import javax.inject.Inject;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
/**
* Created by Giovanni on 25/04/2015.
*/
@WebServlet(name = "Servlettest1")
public class Servlettest1 extends HttpServlet {
@Inject @ClassI
test1_cdi.Class c;
protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
try (PrintWriter out = response.getWriter()) {
/* TODO output your page here. */
out.println("<!DOCTYPE html>");
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet xg</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>Servlet xg at " + request.getContextPath() + "</h1>");
out.println(c.printStudent());
out.println("</body>");
out.println("</html>");
}
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
processRequest(request, response);
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
processRequest(request, response);
}
}

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servlet/Servlettest2.java Normal file
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package servlet;
import test2_constraints_validation.*;
import javax.inject.Inject;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.validation.ConstraintViolation;
import javax.validation.Validator;
import javax.validation.ValidatorFactory;
import javax.validation.executable.ExecutableValidator;
import java.io.IOException;
import java.io.PrintWriter;
import java.lang.reflect.Method;
import java.util.Iterator;
import java.util.Set;
/**
* Created by Giovanni on 25/04/2015.
*/
@WebServlet(name = "Servlettest2")
public class Servlettest2 extends HttpServlet {
@Inject
ValidatorFactory validatorFactory;
@Inject
Validator validator;
@Inject
xg_substring_class xg_substring_class;
@Inject
substring_class substring_class;
@Inject
general_class_wrapper general_class_wrapper;
@Inject
general_class general_class;
@Inject
class_with_builtin_constraints class_with_builtin_constraints;
protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
try (PrintWriter out = response.getWriter()) {
/* TODO output your page here. */
out.println("<!DOCTYPE html>");
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet xg</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>Servlet xg at " + request.getContextPath() + "</h1>");
///////////////// entire class validation
Set<ConstraintViolation<xg_substring_class>> violations = validator.validate(xg_substring_class);
if (violations.size() > 0) out.println("error"); else out.println("tutto ok");
out.println("<br>");
Set<ConstraintViolation<substring_class>> violations2 = validator.validate(substring_class);
if (violations2.size() > 0) out.println("error"); else out.println("tutto ok");
out.println("<br>");
Set<ConstraintViolation<general_class_wrapper>> violations3 = validator.validate(general_class_wrapper);
if (violations3.size() > 0) {
out.println("error");
Iterator<ConstraintViolation<general_class_wrapper>> it = violations3.iterator();
while (it.hasNext()){
ConstraintViolation<general_class_wrapper> t = it.next();
out.println(t.getInvalidValue() + " " + t.getMessage());
}
} else{
out.println("tutto ok");
}
out.println("<br>");
Set<ConstraintViolation<general_class>> violations4 = validator.validate(general_class);
if (violations4.size() > 0) out.println("error"); else out.println("tutto ok");
out.println("<br>");
//////////////// single method paramenter validation
Method method = null;
try {
method = class_with_builtin_constraints.class.getMethod("calculatePrice", Float.class);
} catch (NoSuchMethodException e) {
e.printStackTrace();
}
ExecutableValidator methodValidator = validator. forExecutables();
Set<ConstraintViolation<class_with_builtin_constraints>> violations5 = methodValidator.validateParameters(class_with_builtin_constraints, method, new Object[]{new Float(2)});
if (violations5.size() > 0) out.println("error"); else out.println("tutto ok");
out.println("<br>");
//////////////// single method return value parameter validation
method = null;
try {
method = class_with_builtin_constraints.class.getMethod("calculatePrice", Float.class);
} catch (NoSuchMethodException e) {
e.printStackTrace();
}
methodValidator = validator. forExecutables();
Set<ConstraintViolation<class_with_builtin_constraints>> violations6 = methodValidator.validateReturnValue(class_with_builtin_constraints, method, new Float(6));
if (violations6.size() > 0) out.println("error"); else out.println("tutto ok");
out.println("<br>");
//////////////// check single property
Set<ConstraintViolation<class_with_builtin_constraints>> violations7 = validator.validateValue(class_with_builtin_constraints.class, "title", "aabb");
if (violations7.size() > 0) out.println("error"); else out.println("tutto ok");
out.println("</body>");
out.println("</html>");
}
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
processRequest(request, response);
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
processRequest(request, response);
}
}

54
test1_cdi/Class.java Normal file
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package test1_cdi;
import javax.annotation.PostConstruct;
import javax.enterprise.event.Observes;
import javax.inject.Inject;
import java.util.logging.Logger;
import javax.enterprise.event.Event;
/**
* Created by Giovanni on 26/04/2015.
*/
@ClassI
@GeneralInterceptorA
public class Class implements ClassInterface {
@Inject
Logger l;
@Inject @StudentI(implementation = student_implementations.two)
Student s;
@Inject @NumberOfStudents
int number_of_students;
@Inject @Event1
Event<Object> event_shooter1;
@Inject @Event2
Event<Object> event_shooter2;
@PostConstruct
public void do_post_construct(){
l.info("XGLOG: Post Construct done");
}
public String printStudent (){
event_shooter1.fire(new Object());
event_shooter2.fire(new Object());
return (s.getinfo() +" " + number_of_students);
}
public void observe1 (@Observes @Event1 Object b){
l.info("XGLOG: Event1 captured!");
}
public void observe2 (@Observes @Event2 Object b){
l.info("XGLOG: Event2 captured!");
}
}

25
test1_cdi/ClassDecorator.java Normal file
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package test1_cdi;
import javax.decorator.Decorator;
import javax.decorator.Delegate;
import javax.inject.Inject;
/**
* Created by Giovanni on 27/04/2015.
*/
@Decorator
public class ClassDecorator implements ClassInterface {
@Inject @Delegate @ClassI
private ClassInterface c;
public String printStudent() {
return c.printStudent() + " decorated ";
}
}

20
test1_cdi/ClassI.java Normal file
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package test1_cdi;
import javax.inject.Qualifier;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
/**
* Created by Giovanni on 26/04/2015.
*/
@Qualifier
@Retention(RUNTIME)
@Target({FIELD, TYPE, METHOD})
public @interface ClassI {
}

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test1_cdi/ClassInterface.java Normal file
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package test1_cdi;
/**
* Created by Giovanni on 27/04/2015.
*/
public interface ClassInterface {
String printStudent ();
}

47
test1_cdi/ClassProducer.java Normal file
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package test1_cdi;
import javax.enterprise.inject.*;
import javax.inject.Inject;
import java.util.logging.Logger;
/**
* Created by Giovanni on 26/04/2015.
*/
public class ClassProducer {
@Inject
Logger l;
@Inject @StudentI(implementation = student_implementations.one)
Student s;
@Produces @NumberOfStudents
private int number_of_students(){
return 10;
}
@Produces
private int number_of_students_2(){
return 20;
}
private void clean (@Disposes int s) {
l.info("Do something to clean the producer");
}
private void clean2(@Disposes @NumberOfStudents int s) {
l.info("Do something to clean the producer");
}
}

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test1_cdi/Event1.java Normal file
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package test1_cdi;
import javax.inject.Qualifier;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
/**
* Created by Giovanni on 26/04/2015.
*/
@Qualifier
@Retention(RUNTIME)
@Target({FIELD, TYPE, METHOD, PARAMETER})
public @interface Event1 {}

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test1_cdi/Event2.java Normal file
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package test1_cdi;
import javax.inject.Qualifier;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
/**
* Created by Giovanni on 26/04/2015.
*/
@Qualifier
@Retention(RUNTIME)
@Target({FIELD, TYPE, METHOD, PARAMETER})
public @interface Event2 {}

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test1_cdi/GeneralInterceptor.java Normal file
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package test1_cdi;
/**
* Created by Giovanni on 27/04/2015.
*/
import javax.annotation.PostConstruct;
import javax.annotation.Priority;
import javax.inject.Inject;
import javax.interceptor.*;
import java.util.logging.Logger;
@Interceptor
@GeneralInterceptorA
@Priority(200)
public class GeneralInterceptor {
@Inject
private Logger logger;
@AroundConstruct
private void logConstruct(InvocationContext ic) throws Exception {
logger.info("XGLOG: Begin Constructor Interceptor");
try {
ic.proceed();
} finally {
logger.info("XGLOG: End Constructor Interceptor");
}
}
@PostConstruct
public void logPostConstruct (InvocationContext ic) throws Exception {
logger.info("XGLOG: Begin PostConstructor Interceptor");
try {
ic.proceed();
} finally {
logger.info("XGLOG: End PostConstructor Interceptor");
}
}
@AroundInvoke
public Object logMethod(InvocationContext ic) throws Exception {
logger.info("XGLOG: Begin " + ic.getTarget().toString() + " "+ ic.getMethod().getName()+ " Interceptor");
try {
return ic.proceed();
} finally {
logger.info("XGLOG: End " + ic.getTarget().toString() + " "+ ic.getMethod().getName() + " Interceptor");
}
}
}

19
test1_cdi/GeneralInterceptorA.java Normal file
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package test1_cdi;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import javax.interceptor.InterceptorBinding;
/**
* Created by Giovanni on 27/04/2015.
*/
@InterceptorBinding
@Target({METHOD, TYPE, CONSTRUCTOR})
@Retention(RUNTIME)
public @interface GeneralInterceptorA {
}

20
test1_cdi/NumberOfStudents.java Normal file
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package test1_cdi;
import javax.inject.Qualifier;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
/**
* Created by Giovanni on 26/04/2015.
*/
@Qualifier
@Retention(RUNTIME)
@Target({FIELD, TYPE, METHOD,PARAMETER})
public @interface NumberOfStudents {
}

10
test1_cdi/Student.java Normal file
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package test1_cdi;
/**
* Created by Giovanni on 26/04/2015.
*/
public interface Student {
String getinfo ();
}

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test1_cdi/StudentAlternative.java Normal file
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package test1_cdi;
/**
* Created by Giovanni on 26/04/2015.
*/
import javax.enterprise.inject.Alternative;
@Alternative @StudentI(implementation = student_implementations.one)
public class StudentAlternative implements Student {
@Override
public String getinfo() {
return "i'm an alternative";
}
}

15
test1_cdi/StudentAlternative2.java Normal file
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package test1_cdi;
/**
* Created by Giovanni on 26/04/2015.
*/
import javax.enterprise.inject.Alternative;
@Alternative @StudentI(implementation = student_implementations.two)
public class StudentAlternative2 implements Student {
@Override
public String getinfo() {
return "i'm an alternative 2";
}
}

21
test1_cdi/StudentI.java Normal file
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package test1_cdi;
import javax.inject.Qualifier;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
/**
* Created by Giovanni on 26/04/2015.
*/
@Qualifier
@Retention(RUNTIME)
@Target({FIELD, TYPE, METHOD})
public @interface StudentI {
student_implementations implementation();
}

14
test1_cdi/StudentImplemented.java Normal file
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package test1_cdi;
/**
* Created by Giovanni on 26/04/2015.
*/
@StudentI(implementation = student_implementations.one)
public class StudentImplemented implements Student {
@Override
public String getinfo() {
return "null null";
}
}

14
test1_cdi/StudentImplemented2.java Normal file
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package test1_cdi;
/**
* Created by Giovanni on 26/04/2015.
*/
@StudentI(implementation = student_implementations.two)
public class StudentImplemented2 implements Student {
@Override
public String getinfo() {
return "null null 2";
}
}

3
test1_cdi/student_implementations.java Normal file
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package test1_cdi;
public enum student_implementations {one,two}

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test2_constraints_validation/class_with_builtin_constraints.java Normal file
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package test2_constraints_validation;
import javax.validation.constraints.*;
/**
* Created by Giovanni on 29/04/2015.
*/
public class class_with_builtin_constraints {
@NotNull @Size(min = 4, max = 50)
private String title;
@NotNull
private Float price;
@Pattern(regexp = "[A-Z][a-z]{1,}")
private String musicCompany;
@Max(value = 5)
private Integer numberOfCDs;
@NotNull @DecimalMin("5.8")
public Float calculatePrice(@DecimalMin("1.4") Float rate) {
return price * rate;
}
@DecimalMin("9.99")
public Float calculateVAT() {
return price * 0.196f;
}
@AssertTrue
public Boolean CheckStringLength (@NotNull String a) {
return a.length() > 0;
}
}

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test2_constraints_validation/general_class.java Normal file
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package test2_constraints_validation;
import javax.annotation.PostConstruct;
import javax.validation.constraints.*;
/**
* Created by Giovanni on 29/04/2015.
*/
@general_class_constraint
public class general_class {
private String title;
private Double price;
@PostConstruct private void ps (){
title = "AAA";
price = 121.0;
}
public Boolean CheckStringLength ( String a) {
return a.length() > 0;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public Double getPrice() {
return price;
}
public void setPrice(Double price) {
this.price = price;
}
}

24
test2_constraints_validation/general_class_constraint.java Normal file
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package test2_constraints_validation;
import javax.validation.Constraint;
import javax.validation.Payload;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
/**
* Created by Giovanni on 29/04/2015.
*/
@Constraint(validatedBy = {general_class_validator.class})
@Target({METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER,TYPE})
@Retention(RUNTIME)
public @interface general_class_constraint {
String message() default "This is a sample of constraint for a class";
Class<?>[] groups() default {};
Class<? extends Payload>[] payload() default {};
}

23
test2_constraints_validation/general_class_validator.java Normal file
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package test2_constraints_validation;
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
/**
* Created by Giovanni on 29/04/2015.
*/
public class general_class_validator implements ConstraintValidator<general_class_constraint,general_class> {
@Override
public void initialize(general_class_constraint general_class_constraint) {
}
@Override
public boolean isValid(general_class general_class, ConstraintValidatorContext constraintValidatorContext) {
if (general_class.getPrice() > 0 && general_class.getTitle().length() > 0)
return true;
return false;
}
}

19
test2_constraints_validation/general_class_wrapper.java Normal file
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package test2_constraints_validation;
import javax.annotation.PostConstruct;
import javax.inject.Inject;
/**
* Created by Giovanni on 29/04/2015.
*/
public class general_class_wrapper {
@Inject @general_class_constraint
private general_class g;
@PostConstruct
private void ps (){
g.setPrice(10.0);
g.setTitle("Artur");
}
}

15
test2_constraints_validation/substring_class.java Normal file
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package test2_constraints_validation;
/**
* Created by Giovanni on 29/04/2015.
*/
public class substring_class {
@substring_constraint (xg_attribute_1 = "xgiovio" )
String a = "arxgiovio";
@substring_constraint (xg_attribute_1 = "mario" )
String b = "xgarturomario";
}

25
test2_constraints_validation/substring_constraint.java Normal file
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package test2_constraints_validation;
import javax.validation.Constraint;
import javax.validation.Payload;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
/**
* Created by Giovanni on 29/04/2015.
*/
@Constraint(validatedBy = {substring_validator.class})
@Target({METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER})
@Retention(RUNTIME)
public @interface substring_constraint {
String message() default "This string must contain the xg_attribute_1 attribute ";
Class<?>[] groups() default {};
Class<? extends Payload>[] payload() default {};
String xg_attribute_1() default "";
}

23
test2_constraints_validation/substring_validator.java Normal file
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package test2_constraints_validation;
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
/**
* Created by Giovanni on 29/04/2015.
*/
public class substring_validator implements ConstraintValidator<substring_constraint,String> {
String xg_attribute_1;
@Override
public void initialize(substring_constraint substring_constraint) {
this.xg_attribute_1 = substring_constraint.xg_attribute_1();
}
@Override
public boolean isValid(String s, ConstraintValidatorContext constraintValidatorContext) {
return s.contains(this.xg_attribute_1);
}
}

15
test2_constraints_validation/xg_substring_class.java Normal file
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package test2_constraints_validation;
/**
* Created by Giovanni on 29/04/2015.
*/
public class xg_substring_class {
@xg_substring_constraint
String a = "arxgiovio";
@xg_substring_constraint
String b = "xgarturo";
}

22
test2_constraints_validation/xg_substring_constraint.java Normal file
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package test2_constraints_validation;
import javax.validation.*;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
/**
* Created by Giovanni on 29/04/2015.
*/
@Constraint(validatedBy = {xg_substring_validator.class})
@Target({METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER})
@Retention(RUNTIME)
public @interface xg_substring_constraint {
String message() default "This string doesn't contain xg";
Class<?>[] groups() default {};
Class<? extends Payload>[] payload() default {};
}

20
test2_constraints_validation/xg_substring_validator.java Normal file
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package test2_constraints_validation;
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
/**
* Created by Giovanni on 29/04/2015.
*/
public class xg_substring_validator implements ConstraintValidator<xg_substring_constraint,String> {
@Override
public void initialize(xg_substring_constraint xg_substring_constraint) {
}
@Override
public boolean isValid(String s, ConstraintValidatorContext constraintValidatorContext) {
return s.contains("xg");
}
}