apache bval project (#1178)

* apache bval project

* update tests

* remove extra lines

apache-bval/src/main/java/com/baeldung/model/User.java

@@ -0,0 +1,120 @@
+package com.baeldung.model;
+
+import java.io.File;
+
+import javax.validation.constraints.Min;
+import javax.validation.constraints.NotNull;
+import javax.validation.constraints.Size;
+
+import org.apache.bval.constraints.Email;
+import org.apache.bval.constraints.NotEmpty;
+import org.apache.bval.extras.constraints.checkdigit.IBAN;
+import org.apache.bval.extras.constraints.creditcard.Visa;
+import org.apache.bval.extras.constraints.file.Directory;
+import org.apache.bval.extras.constraints.net.InetAddress;
+
+import com.baeldung.validation.Password;
+
+public class User {
+    @NotNull
+    @Email
+    private String email;
+
+    @NotEmpty
+    @Password
+    private String password;
+
+    @Size(min = 1, max = 20)
+    private String name;
+
+    @Min(18)
+    private int age;
+
+    @Visa
+    private String cardNumber = "";
+
+    @IBAN
+    private String iban = "";
+
+    @InetAddress
+    private String website = "";
+
+    @Directory
+    private File mainDirectory=new File(".");
+
+    public User() {
+    }
+
+    public User(String email, String password, String name, int age) {
+        super();
+        this.email = email;
+        this.password = password;
+        this.name = name;
+        this.age = age;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public int getAge() {
+        return age;
+    }
+
+    public void setAge(int age) {
+        this.age = age;
+    }
+
+    public String getCardNumber() {
+        return cardNumber;
+    }
+
+    public void setCardNumber(String cardNumber) {
+        this.cardNumber = cardNumber;
+    }
+
+    public String getIban() {
+        return iban;
+    }
+
+    public void setIban(String iban) {
+        this.iban = iban;
+    }
+
+    public String getWebsite() {
+        return website;
+    }
+
+    public void setWebsite(String website) {
+        this.website = website;
+    }
+
+    public File getMainDirectory() {
+        return mainDirectory;
+    }
+
+    public void setMainDirectory(File mainDirectory) {
+        this.mainDirectory = mainDirectory;
+    }
+
+}

apache-bval/src/main/java/com/baeldung/validation/Password.java

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+package com.baeldung.validation;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+import javax.validation.Constraint;
+import javax.validation.Payload;
+
+import static java.lang.annotation.ElementType.*;
+
+@Constraint(validatedBy = { PasswordValidator.class })
+@Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface Password {
+    String message() default "Invalid password";
+
+    Class<?>[] groups() default {};
+
+    Class<? extends Payload>[] payload() default {};
+
+    int length() default 6;
+
+    int nonAlpha() default 1;
+}

apache-bval/src/main/java/com/baeldung/validation/PasswordValidator.java

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+package com.baeldung.validation;
+
+import javax.validation.ConstraintValidator;
+import javax.validation.ConstraintValidatorContext;
+
+public class PasswordValidator implements ConstraintValidator<Password, String> {
+
+    private int length;
+    private int nonAlpha;
+
+    @Override
+    public void initialize(Password password) {
+        this.length = password.length();
+        this.nonAlpha = password.nonAlpha();
+
+    }
+
+    @Override
+    public boolean isValid(String value, ConstraintValidatorContext context) {
+        if (value.length() < length) {
+            return false;
+        }
+        int nonAlphaNr = 0;
+        for (int i = 0; i < value.length(); i++) {
+            if (!Character.isLetterOrDigit(value.charAt(i))) {
+                nonAlphaNr++;
+            }
+        }
+        if (nonAlphaNr < nonAlpha) {
+            return false;
+        }
+        return true;
+    }
+
+}