From 6a6840fc79d89945ba4adb7b3984ff596e308204 Mon Sep 17 00:00:00 2001
From: amentis <amentis@cite.gr>
Date: Mon, 18 Dec 2023 10:30:37 +0200
Subject: [PATCH] add custom required one field validator

---
 dmp-backend/core/pom.xml                      |  7 +++-
 .../commons/validation/RequiredOneField.java  | 21 ++++++++++
 .../validation/RequiredOneFieldValidator.java | 40 +++++++++++++++++++
 .../model/persist/DmpUserInvitePersist.java   |  4 ++
 .../persist/DmpUserInviteTypePersist.java     |  2 +
 5 files changed, 73 insertions(+), 1 deletion(-)
 create mode 100644 dmp-backend/core/src/main/java/eu/eudat/commons/validation/RequiredOneField.java
 create mode 100644 dmp-backend/core/src/main/java/eu/eudat/commons/validation/RequiredOneFieldValidator.java

diff --git a/dmp-backend/core/pom.xml b/dmp-backend/core/pom.xml
index 6c607edd2..4b6344a6e 100644
--- a/dmp-backend/core/pom.xml
+++ b/dmp-backend/core/pom.xml
@@ -48,7 +48,12 @@
 			<groupId>org.eclipse.angus</groupId>
 			<artifactId>jakarta.mail</artifactId>
 		</dependency>
-	</dependencies>
+        <dependency>
+            <groupId>commons-beanutils</groupId>
+            <artifactId>commons-beanutils</artifactId>
+            <version>1.9.4</version>
+        </dependency>
+    </dependencies>
 
     <build>
         <plugins>
diff --git a/dmp-backend/core/src/main/java/eu/eudat/commons/validation/RequiredOneField.java b/dmp-backend/core/src/main/java/eu/eudat/commons/validation/RequiredOneField.java
new file mode 100644
index 000000000..1c42ea6f4
--- /dev/null
+++ b/dmp-backend/core/src/main/java/eu/eudat/commons/validation/RequiredOneField.java
@@ -0,0 +1,21 @@
+package eu.eudat.commons.validation;
+
+import jakarta.validation.Constraint;
+import jakarta.validation.Payload;
+
+import java.lang.annotation.*;
+
+@Constraint( validatedBy = { RequiredOneFieldValidator.class } )
+@Documented
+@Target( { ElementType.TYPE } )
+@Retention( RetentionPolicy.RUNTIME )
+public @interface RequiredOneField {
+
+    String message() default "One field is required";
+
+    Class<?>[] groups() default {};
+
+    Class<? extends Payload>[] payload() default {};
+
+    String[] fieldNames();
+}
diff --git a/dmp-backend/core/src/main/java/eu/eudat/commons/validation/RequiredOneFieldValidator.java b/dmp-backend/core/src/main/java/eu/eudat/commons/validation/RequiredOneFieldValidator.java
new file mode 100644
index 000000000..6b1cc6c5f
--- /dev/null
+++ b/dmp-backend/core/src/main/java/eu/eudat/commons/validation/RequiredOneFieldValidator.java
@@ -0,0 +1,40 @@
+package eu.eudat.commons.validation;
+
+import jakarta.validation.ConstraintValidator;
+import jakarta.validation.ConstraintValidatorContext;
+import org.apache.commons.beanutils.PropertyUtils;
+
+
+public class RequiredOneFieldValidator implements ConstraintValidator<RequiredOneField, Object> {
+
+    private String[] fieldNames;
+
+    public void initialize(RequiredOneField constraintAnnotation) {
+        this.fieldNames = constraintAnnotation.fieldNames();
+    }
+
+    public boolean isValid(Object object, ConstraintValidatorContext constraintContext) {
+
+        if (object == null) {
+            return true;
+        }
+        int requiredCount = 0;
+        try {
+            for (String fieldName:fieldNames){
+
+                Object property = PropertyUtils.getProperty(object, fieldName);
+                if (property != null) {
+                    requiredCount = requiredCount + 1;
+                }
+            }
+            if (requiredCount == 1){
+                return true;
+            }
+            return false;
+        } catch (Exception e) {
+            return false;
+        }
+    }
+
+}
+
diff --git a/dmp-backend/core/src/main/java/eu/eudat/model/persist/DmpUserInvitePersist.java b/dmp-backend/core/src/main/java/eu/eudat/model/persist/DmpUserInvitePersist.java
index ae25ccc14..9eb8aa670 100644
--- a/dmp-backend/core/src/main/java/eu/eudat/model/persist/DmpUserInvitePersist.java
+++ b/dmp-backend/core/src/main/java/eu/eudat/model/persist/DmpUserInvitePersist.java
@@ -3,12 +3,16 @@ package eu.eudat.model.persist;
 import eu.eudat.commons.enums.DmpUserRole;
 import eu.eudat.commons.validation.ValidEnum;
 import jakarta.validation.Valid;
+import jakarta.validation.constraints.NotEmpty;
+import jakarta.validation.constraints.NotNull;
 
 import java.util.List;
 
 public class DmpUserInvitePersist {
 
     @Valid
+    @NotNull
+    @NotEmpty
     private List<DmpUserInviteTypePersist> users;
 
     @ValidEnum(message = "{validation.empty}")
diff --git a/dmp-backend/core/src/main/java/eu/eudat/model/persist/DmpUserInviteTypePersist.java b/dmp-backend/core/src/main/java/eu/eudat/model/persist/DmpUserInviteTypePersist.java
index eeb0fd899..3d1fd7f4d 100644
--- a/dmp-backend/core/src/main/java/eu/eudat/model/persist/DmpUserInviteTypePersist.java
+++ b/dmp-backend/core/src/main/java/eu/eudat/model/persist/DmpUserInviteTypePersist.java
@@ -1,8 +1,10 @@
 package eu.eudat.model.persist;
 
+import eu.eudat.commons.validation.RequiredOneField;
 
 import java.util.UUID;
 
+@RequiredOneField(fieldNames={"userId","email"})
 public class DmpUserInviteTypePersist {
     
     private UUID userId;