unused (unneeded?) framework for checking existing email addresses - currently done after trying to save new user

Author: wow-such-code

src/main/java/life/qbic/userdb/helpers/EmailFreeValidator.java

@@ -0,0 +1,24 @@
+
+package life.qbic.userdb.helpers;
+
+import java.util.Set;
+import java.util.stream.Collectors;
+import com.vaadin.data.Validator;
+
+public class EmailFreeValidator implements Validator {
+
+  Set<String> emailAddresses;
+
+  public EmailFreeValidator(Set<String> emailAddresses) {
+    this.emailAddresses =
+        emailAddresses.stream().map(String::toLowerCase).collect(Collectors.toSet());
+  }
+
+  @Override
+  public void validate(Object value) throws InvalidValueException {
+    String val = (String) value;
+    if (emailAddresses.contains(val.toLowerCase())) {
+      throw new InvalidValueException("A person with this e-mail address already exists.");
+    }
+  }
+}

src/main/java/life/qbic/userdb/views/PersonInput.java

@@ -17,6 +17,7 @@
 
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
 import com.vaadin.data.Property.ValueChangeEvent;
 import com.vaadin.data.Property.ValueChangeListener;
 import com.vaadin.data.Validator;
@@ -32,9 +33,11 @@
 import com.vaadin.ui.HorizontalLayout;
 import com.vaadin.ui.TextField;
 import com.vaadin.ui.themes.ValoTheme;
+import ch.systemsx.cisd.common.collection.RegExValidator;
 import life.qbic.datamodel.persons.Affiliation;
 import life.qbic.datamodel.persons.Person;
 import life.qbic.portal.Styles;
+import life.qbic.userdb.helpers.EmailFreeValidator;
 import life.qbic.userdb.helpers.RegExHelper;
 
 public class PersonInput extends HorizontalLayout {
@@ -99,10 +102,14 @@ public PersonInput(List<String> titles, Map<String, Integer> affiliations, List<
     last.setRequired(true);
     left.addComponent(last);
 
-    Validator mailValidator = new RegexpValidator(RegExHelper.VALID_EMAIL_ADDRESS_REGEX,
+//    CompositeValidator mailValidator = new CompositeValidator(CombinationMode.AND, "");
+    RegexpValidator mailRegExVal = new RegexpValidator(RegExHelper.VALID_EMAIL_ADDRESS_REGEX,
         "Please input a valid e-mail address.");
+//    mailValidator.addValidator(mailRegExVal);
+//    mailValidator.addValidator(new EmailFreeValidator(existingEmails));
+
     eMail =
-        prepSizeValidationForTextField("E-Mail", colNamesToMaxLength.get("email"), mailValidator);
+        prepSizeValidationForTextField("E-Mail", colNamesToMaxLength.get("email"), mailRegExVal);
     eMail.setRequired(true);
     left.addComponent(eMail);