feat(projects): Improve project relationship iteration with VersionComparator

backend/common/src/main/java/org/eclipse/sw360/common/utils/VersionComparator.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright Ankush1oo8, 2025.
+ * Copyright NEXT Ankush1oo8, 2025.
+ * Part of the SW360 Portal Project.
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v20.html
+ */
+package org.eclipse.sw360.common.utils;
+
+import java.util.Comparator;
+
+public class VersionComparator implements Comparator<String> {
+    @Override
+    public int compare(String v1, String v2) {
+        if (v1 == null || v2 == null) {
+            return (v1 == null) ? ((v2 == null) ? 0 : -1) : 1;
+        }
+        String[] parts1 = v1.split("\\.");
+        String[] parts2 = v2.split("\\.");
+
+        int length = Math.max(parts1.length, parts2.length);
+        for (int i = 0; i < length; i++) {
+            int num1 = (i < parts1.length) ? Integer.parseInt(parts1[i]) : 0;
+            int num2 = (i < parts2.length) ? Integer.parseInt(parts2[i]) : 0;
+
+            if (num1 != num2) {
+                return Integer.compare(num1, num2);
+            }
+        }
+        return 0;
+    }
+}

backend/common/src/main/java/org/eclipse/sw360/datahandler/db/ProjectDatabaseHandler.java

@@ -90,7 +90,7 @@
 import static org.eclipse.sw360.datahandler.permissions.PermissionUtils.makePermission;
 import org.eclipse.sw360.exporter.ProjectExporter;
 import java.nio.ByteBuffer;
-
+import org.eclipse.sw360.common.utils.VersionComparator;
 /**
  * Class for accessing the CouchDB database
  *
@@ -991,7 +991,7 @@ private List<ProjectLink> iterateProjectRelationShips(Map<String, ProjectProject
             }
             projectLinkOptional.ifPresent(out::add);
         }
-        out.sort(Comparator.comparing(ProjectLink::getName).thenComparing(ProjectLink::getVersion));
+        out.sort(Comparator.comparing(ProjectLink::getName).thenComparing(ProjectLink::getVersion,new VersionComparator()));
         return out;
     }
 
@@ -2444,7 +2444,7 @@ private List<ProjectLink> iterateProjectRelationShips(Map<String, ProjectProject
             }
             projectLinkOptional.ifPresent(out::add);
         }
-        out.sort(Comparator.comparing(ProjectLink::getName).thenComparing(ProjectLink::getVersion));
+        out.sort(Comparator.comparing(ProjectLink::getName).thenComparing(ProjectLink::getVersion, new VersionComparator()));
         return out;
     }
 
@@ -2473,7 +2473,7 @@ private List<ProjectLink> iterateProjectRelationShipsWithAllReleases(Map<String,
                     parentNodeId, visitedIds, maxDepth, user, true, WITH_ALL_RELEASES);
             projectLinkOptional.ifPresent(out::add);
         }
-        out.sort(Comparator.comparing(ProjectLink::getName).thenComparing(ProjectLink::getVersion));
+        out.sort(Comparator.comparing(ProjectLink::getName).thenComparing(ProjectLink::getVersion,new VersionComparator()));
         return out;
     }