diff --git a/opp/core/src/main/java/PreparationNote.java b/opp/core/src/main/java/PreparationNote.java
index 876f903f45a543807737c9a6ee8a990757b4a41f..f36e60920788508951009047119bdf64bcbcfc5c 100644
--- a/opp/core/src/main/java/PreparationNote.java
+++ b/opp/core/src/main/java/PreparationNote.java
@@ -1,10 +1,77 @@
 import java.time.Instant;
 import java.time.LocalDateTime;
+import java.util.Objects;
 
-public record PreparationNote(
-        Id<PreparationNote> preparationNoteId,
-        String text,
-        Operation operationId,
-        Instant lastUpdate
-) {
+import java.util.Objects;
+
+public class PreparationNote {
+    private String noteId;
+    private String operationId;
+    private String content;
+
+
+    public PreparationNote(String noteId, String operationId, String content) {
+        this.noteId = noteId;
+        this.operationId = operationId;
+        this.content = content;
+    }
+
+
+    public String getId() {
+        return noteId;
+    }
+
+    public void setNoteId(String noteId) {
+        this.noteId = noteId;
+    }
+
+    public String getOperationId() {
+        return operationId;
+    }
+
+    public void setOperationId(String operationId) {
+        this.operationId = operationId;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public void setContent(String content) {
+        this.content = content;
+    }
+
+
+    @Override
+    public String toString() {
+        return "PreparationNote{" +
+                "noteId='" + noteId + '\'' +
+                ", operationId='" + operationId + '\'' +
+                ", content='" + content + '\'' +
+                '}';
+    }
+
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        PreparationNote that = (PreparationNote) o;
+        return Objects.equals(noteId, that.NoteId) &&
+                Objects.equals(operationId, that.operationId) &&
+                Objects.equals(content, that.content);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(noteId, operationId, content);
+    }
 }
+
+//public record PreparationNote(
+//        Id<PreparationNote> preparationNoteId,
+//        String text,
+//        Operation operationId,
+//        Instant lastUpdate
+//) {
+
diff --git a/opp/core/src/main/java/Room.java b/opp/core/src/main/java/Room.java
index a221942fdbe97984f79a5cf6b37971037806271c..b0b277ec6ed67309eb3b30b33d445c754f9659df 100644
--- a/opp/core/src/main/java/Room.java
+++ b/opp/core/src/main/java/Room.java
@@ -1,8 +1,72 @@
 import java.time.Instant;
+import java.util.Objects;
 
-public record Room(
-        Id<Room> roomId,
-        String roomName,
-        Instant lastUpdate
-) {
+public class Room {
+    private String roomId;
+    private String roomName;
+    private int capacity;
+
+    
+    public Room(String RoomId, String roomName, int capacity) {
+        this.roomId = roomId;
+        this.roomName = RoomName;
+        this.capacity = capacity;
+    }
+
+    
+    public String getRoomId() {
+        return RoomId;
+    }
+
+    public void setRoomId(String roomId) {
+        this.id = RoomId;
+    }
+
+    public String getRoomName() {
+        return roomName;
+    }
+
+    public void setRoomName(String roomName) {
+        this.roomName = roomName;
+    }
+
+    public int getCapacity() {
+        return capacity;
+    }
+
+    public void setCapacity(int capacity) {
+        this.capacity = capacity;
+    }
+
+    
+    @Override
+    public String toString() {
+        return "Room{" +
+                "roomId='" + roomId + '\'' +
+                ", roomName='" + roomName + '\'' +
+                ", capacity=" + capacity +
+                '}';
+    }
+
+    
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Room room = (Room) o;
+        return capacity == room.capacity &&
+                Objects.equals(roomId, room.roomId) &&
+                Objects.equals(roomName, room.roomName);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, name, capacity);
+    }
 }
+
+//public record Room(
+//      Id<Room> roomId,
+//      String roomName,
+//      Instant lastUpdate
+//) {
diff --git a/opp/core/target/classes/Address.class b/opp/core/target/classes/Address.class
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diff --git a/opp/core/target/classes/Gender.class b/opp/core/target/classes/Gender.class
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diff --git a/opp/core/target/classes/Id$Serializer.class b/opp/core/target/classes/Id$Serializer.class
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diff --git a/opp/core/target/classes/Id.class b/opp/core/target/classes/Id.class
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diff --git a/opp/core/target/classes/OPStaff.class b/opp/core/target/classes/OPStaff.class
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diff --git a/opp/core/target/classes/ObjectModification.class b/opp/core/target/classes/ObjectModification.class
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diff --git a/opp/core/target/classes/Operation$Command.class b/opp/core/target/classes/Operation$Command.class
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diff --git a/opp/core/target/classes/Operation$Create.class b/opp/core/target/classes/Operation$Create.class
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diff --git a/opp/core/target/classes/Operation$Filter.class b/opp/core/target/classes/Operation$Filter.class
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diff --git a/opp/core/target/classes/Operation$Update.class b/opp/core/target/classes/Operation$Update.class
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diff --git a/opp/core/target/classes/OperationService.class b/opp/core/target/classes/OperationService.class
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diff --git a/opp/core/target/classes/OperationTeam.class b/opp/core/target/classes/OperationTeam.class
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diff --git a/opp/core/target/classes/Patient.class b/opp/core/target/classes/Patient.class
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diff --git a/opp/core/target/classes/Repository.class b/opp/core/target/classes/Repository.class
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diff --git a/opp/core/target/classes/Role.class b/opp/core/target/classes/Role.class
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diff --git a/opp/jdbc-repo-impl/target/classes/JDBCRepository.class b/opp/jdbc-repo-impl/target/classes/JDBCRepository.class
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diff --git a/opp/jdbc-repo-impl/target/test-classes/Tests.class b/opp/jdbc-repo-impl/target/test-classes/Tests.class
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