Repository: BremenMusicians/WeMeet_BE
Pull request #13: feat :: [#10] 엔티티 매핑
Author: login: zios0707
Created: 2025-03-20T00:57:33Z | Merged: 2025-03-20T05:17:16Z

resolve #10 

<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit

- **New Features**
  - 종합적인 채팅 및 메시징 기능을 위한 새로운 `Chat` 및 `Message` 엔티티 도입.
  - 요청 발신자와 수신자를 구분하여 친구 관리 기능 강화.
  - 새로운 `Room` 및 `Member` 엔티티를 통해 방 관리 기능 확장.
  - 향상된 프로필 세부정보를 위한 새로운 `User` 엔티티 도입.
  - 데이터 작업을 용이하게 하기 위해 `Chat`, `Message`, `Room`, `Member`, `User`에 대한 새로운 리포지토리 추가.
  - 다양한 유형의 악기를 위한 열거형 추가.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Linked issue #10: 엔티티 매핑
### Describe

엔티티 매핑하기

### Work

_No response_

### Additional

없으

Diff:
diff --git a/src/main/kotlin/dsm/wemeet/domain/chat/repository/ChatJpaRepository.kt b/src/main/kotlin/dsm/wemeet/domain/chat/repository/ChatJpaRepository.kt
new file mode 100644
index 0000000..fe40b49
--- /dev/null
+++ b/src/main/kotlin/dsm/wemeet/domain/chat/repository/ChatJpaRepository.kt
@@ -0,0 +1,7 @@
+package dsm.wemeet.domain.chat.repository
+
+import dsm.wemeet.domain.chat.repository.model.Chat
+import org.springframework.data.jpa.repository.JpaRepository
+import java.util.UUID
+
+interface ChatJpaRepository : JpaRepository<Chat, UUID>
diff --git a/src/main/kotlin/dsm/wemeet/domain/chat/repository/MessageJpaRepository.kt b/src/main/kotlin/dsm/wemeet/domain/chat/repository/MessageJpaRepository.kt
new file mode 100644
index 0000000..b0a9a69
--- /dev/null
+++ b/src/main/kotlin/dsm/wemeet/domain/chat/repository/MessageJpaRepository.kt
@@ -0,0 +1,7 @@
+package dsm.wemeet.domain.chat.repository
+
+import dsm.wemeet.domain.chat.repository.model.Message
+import org.springframework.data.jpa.repository.JpaRepository
+import java.util.*
+
+interface MessageJpaRepository : JpaRepository<Message, UUID>
diff --git a/src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Chat.kt b/src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Chat.kt
new file mode 100644
index 0000000..1bf1eff
--- /dev/null
+++ b/src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Chat.kt
@@ -0,0 +1,28 @@
+package dsm.wemeet.domain.chat.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.Column
+import jakarta.persistence.Entity
+import jakarta.persistence.GeneratedValue
+import jakarta.persistence.GenerationType
+import jakarta.persistence.Id
+import jakarta.persistence.JoinColumn
+import jakarta.persistence.ManyToOne
+import java.util.UUID
+
+@Entity
+class Chat(
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.UUID)
+    @Column(columnDefinition = "BINARY(16)", nullable = false)
+    val id: UUID,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(name = "user1_email", referencedColumnName = "id", nullable = false)
+    val user1: User,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(name = "user2_email", referencedColumnName = "id", nullable = false)
+    val user2: User
+)
diff --git a/src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt b/src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt
new file mode 100644
index 0000000..9ff5d71
--- /dev/null
+++ b/src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt
@@ -0,0 +1,36 @@
+package dsm.wemeet.domain.chat.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.Column
+import jakarta.persistence.Entity
+import jakarta.persistence.GeneratedValue
+import jakarta.persistence.GenerationType
+import jakarta.persistence.Id
+import jakarta.persistence.JoinColumn
+import jakarta.persistence.ManyToOne
+import java.time.LocalDateTime
+import java.util.UUID
+
+@Entity
+class Message(
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.UUID)
+    @Column(columnDefinition = "BINARY(16)", nullable = false)
+    val id: UUID,
+
+    @ManyToOne(optional = false, targetEntity = Chat::class)
+    @JoinColumn(name = "chat_id", referencedColumnName = "id", nullable = false)
+    val chat: Chat,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(name = "sender_email", referencedColumnName = "email", nullable = false)
+    val sender: User,
+
+    @Column(columnDefinition = "DATETIME", nullable = false, name = "send_at")
+    val sendAt: LocalDateTime = LocalDateTime.now(),
+
+    @Column(columnDefinition = "TEXT", nullable = false)
+    val content: String
+
+)
diff --git a/src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt b/src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt
index 927aa24..424d20d 100644
--- a/src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt
+++ b/src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt
@@ -1,17 +1,31 @@
 package dsm.wemeet.domain.friend.repository.model
 
+import dsm.wemeet.domain.user.repository.model.User
 import jakarta.persistence.Column
 import jakarta.persistence.Entity
+import jakarta.persistence.GeneratedValue
+import jakarta.persistence.GenerationType
 import jakarta.persistence.Id
+import jakarta.persistence.JoinColumn
+import jakarta.persistence.ManyToOne
 import java.util.UUID
 
 @Entity
 class Friend(
 
     @Id
+    @GeneratedValue(strategy = GenerationType.UUID)
     @Column(columnDefinition = "BINARY(16)", nullable = false)
-    val id: UUID? = null,
+    val id: UUID,
 
-    @Column(columnDefinition = "VARCHAR(4)", nullable = false)
-    val testColumn: String
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(name = "proposer_email", referencedColumnName = "email", nullable = false)
+    val proposer: User,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(name = "receiver_email", referencedColumnName = "email", nullable = false)
+    val receiver: User,
+
+    @Column(columnDefinition = "BOOLEAN", nullable = false, name = "is_accepted")
+    val isAccepted: Boolean
 )
diff --git a/src/main/kotlin/dsm/wemeet/domain/room/repository/MemberJpaRepository.kt b/src/main/kotlin/dsm/wemeet/domain/room/repository/MemberJpaRepository.kt
new file mode 100644
index 0000000..912beaa
--- /dev/null
+++ b/src/main/kotlin/dsm/wemeet/domain/room/repository/MemberJpaRepository.kt
@@ -0,0 +1,7 @@
+package dsm.wemeet.domain.room.repository
+
+import dsm.wemeet.domain.room.repository.model.Member
+import org.springframework.data.jpa.repository.JpaRepository
+import java.util.*
+
+interface MemberJpaRepository : JpaRepository<Member, UUID>
diff --git a/src/main/kotlin/dsm/wemeet/domain/room/repository/RoomJpaRepository.kt b/src/main/kotlin/dsm/wemeet/domain/room/repository/RoomJpaRepository.kt
new file mode 100644
index 0000000..eb087d0
--- /dev/null
+++ b/src/main/kotlin/dsm/wemeet/domain/room/repository/RoomJpaRepository.kt
@@ -0,0 +1,7 @@
+package dsm.wemeet.domain.room.repository
+
+import dsm.wemeet.domain.room.repository.model.Room
+import org.springframework.data.jpa.repository.JpaRepository
+import java.util.*
+
+interface RoomJpaRepository : JpaRepository<Room, UUID>
diff --git a/src/main/kotlin/dsm/wemeet/domain/room/repository/model/Instrument.kt b/src/main/kotlin/dsm/wemeet/domain/room/repository/model/Instrument.kt
new file mode 100644
index 0000000..d559ee4
--- /dev/null
+++ b/src/main/kotlin/dsm/wemeet/domain/room/repository/model/Instrument.kt
@@ -0,0 +1,9 @@
+package dsm.wemeet.domain.room.repository.model
+
+enum class Instrument {
+    VOCAL,
+    PIANO,
+    DRUM,
+    GUITAR,
+    ETC
+}
diff --git a/src/main/kotlin/dsm/wemeet/domain/room/repository/model/Member.kt b/src/main/kotlin/dsm/wemeet/domain/room/repository/model/Member.kt
new file mode 100644
index 0000000..6a123a5
--- /dev/null
+++ b/src/main/kotlin/dsm/wemeet/domain/room/repository/model/Member.kt
@@ -0,0 +1,28 @@
+package dsm.wemeet.domain.room.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.Column
+import jakarta.persistence.Entity
+import jakarta.persistence.GeneratedValue
+import jakarta.persistence.GenerationType
+import jakarta.persistence.Id
+import jakarta.persistence.JoinColumn
+import jakarta.persistence.ManyToOne
+import java.util.UUID
+
+@Entity
+class Member(
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.UUID)
+    @Column(columnDefinition = "BINARY(16)", nullable = false)
+    val id: UUID,
+
+    @ManyToOne(optional = false, targetEntity = Room::class)
+    @JoinColumn(name = "room_id", referencedColumnName = "id", nullable = false)
+    val room: Room,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(name = "member_email", referencedColumnName = "email", nullable = false)
+    val user: User
+)
diff --git a/src/main/kotlin/dsm/wemeet/domain/room/repository/model/Room.kt b/src/main/kotlin/dsm/wemeet/domain/room/repository/model/Room.kt
new file mode 100644
index 0000000..1317400
--- /dev/null
+++ b/src/main/kotlin/dsm/wemeet/domain/room/repository/model/Room.kt
@@ -0,0 +1,39 @@
+package dsm.wemeet.domain.room.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.Column
+import jakarta.persistence.Entity
+import jakarta.persistence.GeneratedValue
+import jakarta.persistence.GenerationType
+import jakarta.persistence.Id
+import jakarta.persistence.JoinColumn
+import jakarta.persistence.ManyToOne
+import java.util.UUID
+
+@Entity
+class Room(
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.UUID)
+    @Column(columnDefinition = "BINARY(16)", nullable = false)
+    val id: UUID,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(name = "owner", referencedColumnName = "email", nullable = false)
+    val owner: User,
+
+    @Column(columnDefinition = "VARCHAR(20)", nullable = false)
+    val name: String,
+
+    @Column(columnDefinition = "TINYINT", nullable = false, name = "max_member")
+    val maxMember: Int,
+
+    @Column(columnDefinition = "VARCHAR(100)", nullable = false)
+    val describe: String,
+
+    @Column(columnDefinition = "BOOLEAN", nullable = false, name = "is_public")
+    val isPublic: Boolean,
+
+    @Column(columnDefinition = "SMALLINT", nullable = false)
+    val password: Int
+)
diff --git a/src/main/kotlin/dsm/wemeet/domain/user/repository/UserJpaRepository.kt b/src/main/kotlin/dsm/wemeet/domain/user/repository/UserJpaRepository.kt
new file mode 100644
index 0000000..fdd7d97
--- /dev/null
+++ b/src/main/kotlin/dsm/wemeet/domain/user/repository/UserJpaRepository.kt
@@ -0,0 +1,6 @@
+package dsm.wemeet.domain.user.repository
+
+import dsm.wemeet.domain.user.repository.model.User
+import org.springframework.data.jpa.repository.JpaRepository
+
+interface UserJpaRepository : JpaRepository<User, String>
diff --git a/src/main/kotlin/dsm/wemeet/domain/user/repository/model/User.kt b/src/main/kotlin/dsm/wemeet/domain/user/repository/model/User.kt
new file mode 100644
index 0000000..0a12d24
--- /dev/null
+++ b/src/main/kotlin/dsm/wemeet/domain/user/repository/model/User.kt
@@ -0,0 +1,28 @@
+package dsm.wemeet.domain.user.repository.model
+
+import jakarta.persistence.Column
+import jakarta.persistence.Entity
+import jakarta.persistence.Id
+
+@Entity
+class User(
+
+    @Id
+    @Column(columnDefinition = "VARCHAR(50)", nullable = false)
+    val email: String,
+
+    @Column(columnDefinition = "CHAR(255)", nullable = false)
+    val password: String,
+
+    @Column(columnDefinition = "VARCHAR(20)", nullable = false, name = "account_id", unique = true)
+    val accountId: String,
+
+    @Column(columnDefinition = "CHAR(255)", nullable = true)
+    val profile: String,
+
+    @Column(columnDefinition = "VARCHAR(255)", nullable = true, name = "about_me")
+    val aboutMe: String,
+
+    @Column(columnDefinition = "VARCHAR(40)", nullable = false)
+    val position: String
+)


Reviews:
user: login: coderabbitai[bot]
body: **Actionable comments posted: 13**

<details>
<summary>🧹 Nitpick comments (3)</summary><blockquote>

<details>
<summary>src/main/kotlin/dsm/wemeet/domain/user/repository/model/User.kt (1)</summary><blockquote>

`7-28`: **User entity could be improved with nullable properties and audit fields.**

The User entity is well-structured, but there are some improvements to consider:

1. The nullable properties (profile, aboutMe, position) have non-nullable Kotlin types but are marked as nullable in the database. This could cause runtime exceptions if null values are returned.
2. Consider adding audit fields (createdAt, updatedAt) for tracking user record changes.
3. Using email as the primary key might cause issues if a user needs to change their email.


```diff
@Entity
class User(
    @Id
    @Column(columnDefinition = "VARCHAR(50)", nullable = false)
    val email: String,

    @Column(columnDefinition = "CHAR(255)", nullable = false)
    val password: String,

    @Column(columnDefinition = "VARCHAR(20)", nullable = false, name = "account_id")
    val accountId: String,

    @Column(columnDefinition = "CHAR(255)", nullable = true)
-   val profile: String,
+   val profile: String? = null,

    @Column(columnDefinition = "VARCHAR(255)", nullable = true, name = "about_me")
-   val aboutMe: String,
+   val aboutMe: String? = null,

    @Column(columnDefinition = "VARCHAR(40)", nullable = true)
-   val position: String
+   val position: String? = null,
+
+   @Column(updatable = false)
+   val createdAt: LocalDateTime = LocalDateTime.now(),
+
+   @Column
+   val updatedAt: LocalDateTime = LocalDateTime.now()
)
```

Don't forget to add the import: `import java.time.LocalDateTime`

</blockquote></details>
<details>
<summary>src/main/kotlin/dsm/wemeet/domain/room/repository/model/Room.kt (1)</summary><blockquote>

`24-25`: **Rename 'describe' to 'description' for better readability.**

The property name 'describe' is a verb, but it should be a noun like 'description' to follow standard naming conventions.


```diff
    @Column(columnDefinition = "VARCHAR(100)", nullable = false)
-   val describe: String,
+   val description: String,
```

</blockquote></details>
<details>
<summary>src/main/kotlin/dsm/wemeet/domain/room/repository/model/Member.kt (1)</summary><blockquote>

`10-12`: **Consider using a generated ID**

The current implementation requires manually providing a UUID for each new entity. Consider using a generated value.

```diff
    @Id
+   @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(columnDefinition = "BINARY(16)", nullable = false)
-   val id: UUID,
+   val id: UUID = UUID.randomUUID(),
```

</blockquote></details>

</blockquote></details>

<details>
<summary>📜 Review details</summary>

**Configuration used: CodeRabbit UI**
**Review profile: CHILL**
**Plan: Pro**

<details>
<summary>📥 Commits</summary>

Reviewing files that changed from the base of the PR and between 812f5ebc3eef23a26800de2660e4caf0892fea62 and 11e87d51f947e692de3cb821ce941bdebcaf25c3.

</details>

<details>
<summary>📒 Files selected for processing (12)</summary>

* `src/main/kotlin/dsm/wemeet/domain/chat/repository/ChatJpaRepository.kt` (1 hunks)
* `src/main/kotlin/dsm/wemeet/domain/chat/repository/MessageJpaRepository.kt` (1 hunks)
* `src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Chat.kt` (1 hunks)
* `src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt` (1 hunks)
* `src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt` (2 hunks)
* `src/main/kotlin/dsm/wemeet/domain/room/repository/MemberJpaRepository.kt` (1 hunks)
* `src/main/kotlin/dsm/wemeet/domain/room/repository/RoomJpaRepository.kt` (1 hunks)
* `src/main/kotlin/dsm/wemeet/domain/room/repository/model/Instrument.kt` (1 hunks)
* `src/main/kotlin/dsm/wemeet/domain/room/repository/model/Member.kt` (1 hunks)
* `src/main/kotlin/dsm/wemeet/domain/room/repository/model/Room.kt` (1 hunks)
* `src/main/kotlin/dsm/wemeet/domain/user/repository/UserJpaRepository.kt` (1 hunks)
* `src/main/kotlin/dsm/wemeet/domain/user/repository/model/User.kt` (1 hunks)

</details>

<details>
<summary>🧰 Additional context used</summary>

<details>
<summary>🪛 GitHub Actions: ktlint</summary>

<details>
<summary>src/main/kotlin/dsm/wemeet/domain/room/repository/model/Room.kt</summary>

[error] 1-1: Wildcard import (cannot be auto-corrected)

</details>
<details>
<summary>src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt</summary>

[error] 1-1: Wildcard import (cannot be auto-corrected)

</details>
<details>
<summary>src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt</summary>

[error] 1-1: Wildcard import (cannot be auto-corrected)

</details>
<details>
<summary>src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Chat.kt</summary>

[error] 1-1: Wildcard import (cannot be auto-corrected)

</details>
<details>
<summary>src/main/kotlin/dsm/wemeet/domain/room/repository/model/Member.kt</summary>

[error] 1-1: Wildcard import (cannot be auto-corrected)

</details>

</details>

</details>

<details>
<summary>🔇 Additional comments (7)</summary><blockquote>

<details>
<summary>src/main/kotlin/dsm/wemeet/domain/room/repository/MemberJpaRepository.kt (1)</summary>

`1-7`: **Solid Repository Interface Setup.**  
The `MemberJpaRepository` interface correctly extends `JpaRepository` using the `Member` entity with a `UUID` identifier. Everything conforms with standard Spring Data JPA conventions.

</details>
<details>
<summary>src/main/kotlin/dsm/wemeet/domain/chat/repository/MessageJpaRepository.kt (1)</summary>

`1-7`: **Clean and Standard Implementation.**  
The `MessageJpaRepository` interface is precisely defined by extending `JpaRepository` for the `Message` entity. This setup is straightforward and adheres to Spring Data repository patterns.

</details>
<details>
<summary>src/main/kotlin/dsm/wemeet/domain/chat/repository/ChatJpaRepository.kt (1)</summary>

`1-7`: **Well-Structured Chat Repository.**  
The `ChatJpaRepository` interface is implemented correctly and extends `JpaRepository` for the `Chat` entity with `UUID` as the identifier. This design leverages Spring Data’s powerful CRUD capabilities.

</details>
<details>
<summary>src/main/kotlin/dsm/wemeet/domain/user/repository/UserJpaRepository.kt (1)</summary>

`1-6`: **Accurate User Repository Definition.**  
This interface extends `JpaRepository` for the `User` entity using `String` as the identifier. It follows typical conventions for user management repositories within Spring Data, ensuring robust CRUD operations.

</details>
<details>
<summary>src/main/kotlin/dsm/wemeet/domain/room/repository/model/Instrument.kt (1)</summary>

`1-9`: **Enumeration for Instruments Looks Great.**  
The `Instrument` enum is clearly defined with well-named constants representing various musical instruments. This implementation supports type-safe usage and integrates neatly with the domain model.

</details>
<details>
<summary>src/main/kotlin/dsm/wemeet/domain/room/repository/RoomJpaRepository.kt (1)</summary>

`1-7`: **Clean repository interface implementation.**

This is a well-structured implementation of a Spring Data JPA repository for Room entities. The interface follows standard conventions and properly specifies the entity type and ID type (UUID).

</details>
<details>
<summary>src/main/kotlin/dsm/wemeet/domain/room/repository/model/Room.kt (1)</summary>

`30-31`: **Storing password as an integer is unusual.**

Storing a room password as an integer is unusual and limits password complexity. Consider using a string instead, especially if this is meant to be a secure password.


```diff
-   @Column(columnDefinition = "SMALLINT", nullable = false)
-   val password: Int
+   @Column(columnDefinition = "VARCHAR(50)", nullable = false)
+   val password: String
```

Is this meant to be a simple numeric passcode for room entry? If so, please verify the intended usage and whether an integer is sufficient for your security requirements.

</details>

</blockquote></details>

</details>

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body: **Actionable comments posted: 2**

<details>
<summary>🔭 Outside diff range comments (1)</summary><blockquote>

<details>
<summary>src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt (1)</summary><blockquote>

`14-16`: _⚠️ Potential issue_

**ID 필드가 nullable이지만 column은 non-nullable로 정의되어 있습니다.**

ID 속성은 `UUID?`로 nullable하게 선언되었지만, 컬럼은 `nullable = false`로 정의되어 있어 모순됩니다. 주요 식별자는 null이 될 수 없어야 합니다.

```diff
@Id
@Column(columnDefinition = "BINARY(16)", nullable = false)
- val id: UUID? = null,
+ val id: UUID = UUID.randomUUID(),
```

</blockquote></details>

</blockquote></details>

<details>
<summary>♻️ Duplicate comments (3)</summary><blockquote>

<details>
<summary>src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt (1)</summary><blockquote>

`15-17`: _⚠️ Potential issue_

**ID 필드가 nullable이지만 column은 non-nullable로 정의되어 있습니다.**

ID 속성은 `UUID?`로 nullable하게 선언되었지만, 컬럼은 `nullable = false`로 정의되어 있어 모순됩니다. 주요 식별자는 null이 될 수 없어야 합니다.

```diff
@Id
@Column(columnDefinition = "BINARY(16)", nullable = false)
- val id: UUID? = null,
+ val id: UUID = UUID.randomUUID(),
```

</blockquote></details>
<details>
<summary>src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Chat.kt (2)</summary><blockquote>

`14-16`: _⚠️ Potential issue_

**ID 필드가 nullable이지만 column은 non-nullable로 정의되어 있습니다.**

ID 속성은 `UUID?`로 nullable하게 선언되었지만, 컬럼은 `nullable = false`로 정의되어 있어 모순됩니다. 주요 식별자는 null이 될 수 없어야 합니다.

```diff
@Id
@Column(columnDefinition = "BINARY(16)", nullable = false)
- val id: UUID? = null,
+ val id: UUID = UUID.randomUUID(),
```

---

`18-24`: _⚠️ Potential issue_

**타입 불일치: @ManyToOne 어노테이션과 String 속성 타입이 맞지 않습니다.**

`@ManyToOne` 어노테이션은 엔티티 타입의 속성과 함께 사용되어야 하는데, 현재 `String` 타입 속성과 함께 사용되고 있습니다. 또한 `referencedColumnName="id"`가 사용되었지만 컬럼 이름은 email을 참조하는 것으로 보입니다.

다음 두 가지 방법 중 하나로 해결할 수 있습니다:


**방법 1: 엔티티 관계를 사용하려면 (권장)**
```diff
@ManyToOne(optional = false, targetEntity = User::class)
- @JoinColumn(name = "user1_email", referencedColumnName = "id", nullable = false)
+ @JoinColumn(name = "user1_email", referencedColumnName = "email", nullable = false)
- val user1: String,
+ val user1: User,

@ManyToOne(optional = false, targetEntity = User::class)
- @JoinColumn(name = "user2_email", referencedColumnName = "id", nullable = false)
+ @JoinColumn(name = "user2_email", referencedColumnName = "email", nullable = false)
- val user2: String
+ val user2: User
```

**방법 2: 문자열 참조만 저장하려면**
```diff
- @ManyToOne(optional = false, targetEntity = User::class)
@JoinColumn(name = "user1_email", nullable = false)
val user1: String,

- @ManyToOne(optional = false, targetEntity = User::class)
@JoinColumn(name = "user2_email", nullable = false)
val user2: String
```

</blockquote></details>

</blockquote></details>

<details>
<summary>🧹 Nitpick comments (5)</summary><blockquote>

<details>
<summary>src/main/kotlin/dsm/wemeet/domain/room/repository/model/Member.kt (3)</summary><blockquote>

`23-24`: **Column name doesn't match property semantics**

While the property name `user` is correct, the column name `member_email` doesn't clearly communicate that it references a user's email.


```diff
-    @JoinColumn(name = "member_email", referencedColumnName = "email", nullable = false)
+    @JoinColumn(name = "user_email", referencedColumnName = "email", nullable = false)
```

---

`18-20`: **Consider specifying cascade type for @ManyToOne relationships**

No cascade type is specified for the relationship with `Room`. Depending on your application requirements, you might want to specify cascade operations.


```diff
-    @ManyToOne(optional = false, targetEntity = Room::class)
+    @ManyToOne(optional = false, targetEntity = Room::class, cascade = [CascadeType.PERSIST, CascadeType.MERGE])
```

---

`11-12`: **Add documentation for the entity class**

Consider adding a KDoc comment to describe the purpose and usage of this entity.


```diff
 @Entity
+/**
+ * Entity representing a member of a room.
+ * This establishes the many-to-many relationship between users and rooms.
+ */
 class Member(
```

</blockquote></details>
<details>
<summary>src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt (1)</summary><blockquote>

`19-21`: **ManyToOne 관계에서 불필요한 targetEntity 제거**

`targetEntity` 속성은 속성 타입이 이미 엔티티 클래스(`Chat`, `User`)를 명시하고 있을 때 불필요합니다. 코드를 더 간결하게 유지하기 위해 제거하는 것이 좋습니다.

```diff
- @ManyToOne(optional = false, targetEntity = Chat::class)
+ @ManyToOne(optional = false)
  @JoinColumn(name = "chat_id", referencedColumnName = "id", nullable = false)
  val chat: Chat,

- @ManyToOne(optional = false, targetEntity = User::class)
+ @ManyToOne(optional = false)
  @JoinColumn(name = "sender_email", referencedColumnName = "email", nullable = false)
  val sender: User,
```


Also applies to: 23-25

</blockquote></details>
<details>
<summary>src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt (1)</summary><blockquote>

`19-24`: **관계 컬럼에서는 columnDefinition 사용 자제**

이전 피드백에서 관계 컬럼에는 columnDefinition을 사용하지 않기로 결정했었습니다. @JoinColumn에서 columnDefinition을 제거하는 것이 좋습니다.

```diff
@ManyToOne(optional = false, targetEntity = User::class)
- @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "proposer_email")
+ @JoinColumn(nullable = false, name = "proposer_email")
val proposer: User,

@ManyToOne(optional = false, targetEntity = User::class)
- @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "receiver_email")
+ @JoinColumn(nullable = false, name = "receiver_email")
val receiver: User,
```

</blockquote></details>

</blockquote></details>

<details>
<summary>📜 Review details</summary>

**Configuration used: CodeRabbit UI**
**Review profile: CHILL**
**Plan: Pro**

<details>
<summary>📥 Commits</summary>

Reviewing files that changed from the base of the PR and between 11e87d51f947e692de3cb821ce941bdebcaf25c3 and 30b6ab7cc6f2573be3f7e05c55c702099941ea70.

</details>

<details>
<summary>📒 Files selected for processing (5)</summary>

* `src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Chat.kt` (1 hunks)
* `src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt` (1 hunks)
* `src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt` (2 hunks)
* `src/main/kotlin/dsm/wemeet/domain/room/repository/model/Member.kt` (1 hunks)
* `src/main/kotlin/dsm/wemeet/domain/room/repository/model/Room.kt` (1 hunks)

</details>

<details>
<summary>🚧 Files skipped from review as they are similar to previous changes (1)</summary>

* src/main/kotlin/dsm/wemeet/domain/room/repository/model/Room.kt

</details>

<details>
<summary>🧰 Additional context used</summary>

<details>
<summary>🧠 Learnings (2)</summary>

<details>
<summary>src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt (1)</summary>

```
Learnt from: zios0707
PR: BremenMusicians/WeMeet_BE#13
File: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt:7-21
Timestamp: 2025-03-20T01:15:26.413Z
Learning: The user zios0707 prefers explanations in Korean.
```

</details>
<details>
<summary>src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt (1)</summary>

```
Learnt from: zios0707
PR: BremenMusicians/WeMeet_BE#13
File: src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt:18-20
Timestamp: 2025-03-20T01:42:56.627Z
Learning: In JPA/Hibernate entity mapping, the `@ManyToOne` annotation should be used with properties of entity type (e.g., User), not primitive types like String. When a property is annotated with `@ManyToOne`, its type should match the target entity class specified in the annotation.
```

</details>

</details><details>
<summary>🪛 GitHub Actions: ktlint</summary>

<details>
<summary>src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt</summary>

[error] 1-1: KtLint failed to parse file: /home/runner/work/WeMeet_BE/WeMeet_BE/src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt

</details>

</details>

</details>

<details>
<summary>🔇 Additional comments (1)</summary><blockquote>

<details>
<summary>src/main/kotlin/dsm/wemeet/domain/room/repository/model/Member.kt (1)</summary>

`1-25`: **Class looks good overall, with proper JPA annotations for entity mapping**

The `Member` entity is well-structured with appropriate JPA annotations and relationship mappings.

</details>

</blockquote></details>

</details>

<!-- This is an auto-generated comment by CodeRabbit for review status -->
state: COMMENTED
author_association: NONE
submitted_at: 2025-03-20T02:00:35Z
user: login: coderabbitai[bot]
body: **Actionable comments posted: 1**

<details>
<summary>♻️ Duplicate comments (1)</summary><blockquote>

<details>
<summary>src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Chat.kt (1)</summary><blockquote>

`21-27`: _⚠️ Potential issue_

**타입 불일치 문제: @ManyToOne 어노테이션과 속성 타입 사이의 충돌**

현재 `user1`과 `user2` 속성은 `String` 타입으로 정의되어 있지만, `@ManyToOne` 어노테이션과 `targetEntity = User::class`는 이 속성들이 `User` 엔티티를 참조해야 함을 나타냅니다. 이는 타입 불일치를 유발합니다.


다음 두 가지 옵션 중 하나를 선택하세요:

옵션 1) 엔티티 관계를 유지하려면 속성 타입을 `User`로 변경하세요:
```diff
@ManyToOne(optional = false, targetEntity = User::class)
@JoinColumn(name = "user1_email", referencedColumnName = "id", nullable = false)
-val user1: String,
+val user1: User,

@ManyToOne(optional = false, targetEntity = User::class)
@JoinColumn(name = "user2_email", referencedColumnName = "id", nullable = false)
-val user2: String
+val user2: User
```

옵션 2) 문자열 ID만 저장하려면 `@ManyToOne` 어노테이션을 제거하고 `@Column`으로 변경하세요:
```diff
-@ManyToOne(optional = false, targetEntity = User::class)
@JoinColumn(name = "user1_email", referencedColumnName = "id", nullable = false)
val user1: String,

-@ManyToOne(optional = false, targetEntity = User::class)
@JoinColumn(name = "user2_email", referencedColumnName = "id", nullable = false)
val user2: String
```

</blockquote></details>

</blockquote></details>

<details>
<summary>🧹 Nitpick comments (3)</summary><blockquote>

<details>
<summary>src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt (3)</summary><blockquote>

`22-24`: **Chat 엔티티 연관관계 설정 확인**

Chat 엔티티를 참조하는 `chat` 속성이 올바르게 정의되어 있습니다. 그러나 `targetEntity` 속성은 불필요할 수 있습니다. 속성 타입이 이미 `Chat`으로 명시되어 있으므로 JPA는 자동으로 타입을 인식할 수 있습니다.


필요하지 않은 `targetEntity` 속성을 제거하는 것이 코드를 더 간결하게 만들 수 있습니다:
```diff
-@ManyToOne(optional = false, targetEntity = Chat::class)
+@ManyToOne(optional = false)
@JoinColumn(name = "chat_id", referencedColumnName = "id", nullable = false)
val chat: Chat,
```

---

`26-28`: **User 엔티티 연관관계 설정 확인**

User 엔티티를 참조하는 `sender` 속성에도 불필요한 `targetEntity` 속성이 있습니다. 속성 타입이 이미 `User`로 명시되어 있으므로 JPA는 자동으로 타입을 인식할 수 있습니다.


필요하지 않은 `targetEntity` 속성을 제거하는 것이 좋습니다:
```diff
-@ManyToOne(optional = false, targetEntity = User::class)
+@ManyToOne(optional = false)
@JoinColumn(name = "sender_email", referencedColumnName = "email", nullable = false)
val sender: User,
```

---

`30-31`: **고려사항: 시간 데이터 타입**

`sendAt` 필드의 `columnDefinition`을 "DATETIME"으로 설정하셨는데, 데이터베이스에 따라 타임존 정보가 손실될 수 있습니다. 


타임존 정보가 중요하다면 "TIMESTAMP" 또는 "TIMESTAMP WITH TIME ZONE"을 고려해보세요:
```diff
-@Column(columnDefinition = "DATETIME", nullable = false, name = "send_at")
+@Column(columnDefinition = "TIMESTAMP", nullable = false, name = "send_at")
val sendAt: LocalDateTime = LocalDateTime.now(),
```

또한 `sendAt`보다는 `sentAt`이 영어 문법적으로 더 자연스럽습니다.

</blockquote></details>

</blockquote></details>

<details>
<summary>📜 Review details</summary>

**Configuration used: CodeRabbit UI**
**Review profile: CHILL**
**Plan: Pro**

<details>
<summary>📥 Commits</summary>

Reviewing files that changed from the base of the PR and between 30b6ab7cc6f2573be3f7e05c55c702099941ea70 and e5d13b3268894e0554ff47a199741432595b9e2a.

</details>

<details>
<summary>📒 Files selected for processing (5)</summary>

* `src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Chat.kt` (1 hunks)
* `src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt` (1 hunks)
* `src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt` (1 hunks)
* `src/main/kotlin/dsm/wemeet/domain/room/repository/model/Member.kt` (1 hunks)
* `src/main/kotlin/dsm/wemeet/domain/room/repository/model/Room.kt` (1 hunks)

</details>

<details>
<summary>🚧 Files skipped from review as they are similar to previous changes (3)</summary>

* src/main/kotlin/dsm/wemeet/domain/room/repository/model/Member.kt
* src/main/kotlin/dsm/wemeet/domain/room/repository/model/Room.kt
* src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt

</details>

<details>
<summary>🧰 Additional context used</summary>

<details>
<summary>🧠 Learnings (1)</summary>

<details>
<summary>src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt (1)</summary>

```
Learnt from: zios0707
PR: BremenMusicians/WeMeet_BE#13
File: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt:7-21
Timestamp: 2025-03-20T01:15:26.413Z
Learning: The user zios0707 prefers explanations in Korean.
```

</details>

</details>

</details>

<details>
<summary>🔇 Additional comments (2)</summary><blockquote>

<details>
<summary>src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Chat.kt (2)</summary>

`22-23`: **JoinColumn referencedColumnName 확인 필요**

`referencedColumnName = "id"`로 지정되어 있는데, 컬럼명 `user1_email`과 `user2_email`은 이메일 필드를 참조하는 것으로 보입니다. User 엔티티의 ID 필드 이름이 실제로 "id"인지 확인하거나, 이메일 필드를 참조하려면 "email"로 변경해야 합니다.


User 엔티티의 기본 키(primary key)가 무엇인지 확인하시고, `referencedColumnName`을 적절히 수정하세요.

---

`3-11`: **Chat 클래스에 필요한 import 누락**

`Chat` 클래스를 import 문에서 찾을 수 없습니다. 이는 순환 참조(circular reference)가 될 수 있지만, 자기 자신의 클래스는 같은 파일 내에서 import가 필요하지 않습니다.


현재 import 문 목록은 잘 구성되어 있으며, 와일드카드 import 대신 명시적인 import를 사용하고 있습니다.

</details>

</blockquote></details>

</details>

<!-- This is an auto-generated comment by CodeRabbit for review status -->
state: COMMENTED
author_association: NONE
submitted_at: 2025-03-20T02:05:33Z
user: login: zios0707
state: COMMENTED
author_association: CONTRIBUTOR
submitted_at: 2025-03-20T02:11:02Z
user: login: coderabbitai[bot]
state: COMMENTED
author_association: NONE
submitted_at: 2025-03-20T02:11:32Z
user: login: meltapplee
state: COMMENTED
author_association: MEMBER
submitted_at: 2025-03-20T03:29:57Z
user: login: zios0707
state: COMMENTED
author_association: CONTRIBUTOR
submitted_at: 2025-03-20T04:11:53Z
user: login: meltapplee
body: LGTM🤩
state: APPROVED
author_association: MEMBER
submitted_at: 2025-03-20T04:32:18Z

Review comments:
diff_hunk: @@ -0,0 +1,21 @@
+package dsm.wemeet.domain.chat.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.*
+import java.util.*
path: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt
user: login: coderabbitai[bot]
body: _⚠️ Potential issue_

**Fix wildcard import to comply with ktlint.**

The pipeline has flagged a wildcard import that violates ktlint rules.


```diff
- import jakarta.persistence.*
+ import jakarta.persistence.Column
+ import jakarta.persistence.Entity
+ import jakarta.persistence.Id
+ import jakarta.persistence.JoinColumn
+ import jakarta.persistence.ManyToOne
```


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
import dsm.wemeet.domain.user.repository.model.User
import jakarta.persistence.Column
import jakarta.persistence.Entity
import jakarta.persistence.Id
import jakarta.persistence.JoinColumn
import jakarta.persistence.ManyToOne
import java.util.*
`````

</details>

<!-- suggestion_end -->

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-03-20T01:01:31Z
author_association: NONE
diff_hunk: @@ -0,0 +1,21 @@
+package dsm.wemeet.domain.chat.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.*
+import java.util.*
+
+@Entity
+class Message(
+
+    @Id
+    @Column(columnDefinition = "BINARY(16)", nullable = false)
+    val id: UUID? = null,
+
+    @ManyToOne(optional = false, targetEntity = Chat::class)
+    @JoinColumn(columnDefinition = "BINARY(16)", nullable = false, name = "chat_id")
+    val chatId: UUID,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "sender_email")
+    val senderEmail: String
+)
path: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt
user: login: coderabbitai[bot]
body: _⚠️ Potential issue_

**Incorrect entity relationships and missing message content.**

There are several issues with this Message entity:

1. The ID is declared as nullable (`UUID?`) but the column is marked as non-nullable, which is contradictory
2. The entity relationships are incorrectly modeled - you're storing UUIDs and strings instead of actual entity references
3. The message is missing critical fields like content and timestamp



```diff
@Entity
class Message(

    @Id
    @Column(columnDefinition = "BINARY(16)", nullable = false)
-   val id: UUID? = null,
+   val id: UUID,

-   @ManyToOne(optional = false, targetEntity = Chat::class)
-   @JoinColumn(columnDefinition = "BINARY(16)", nullable = false, name = "chat_id")
-   val chatId: UUID,
+   @ManyToOne(optional = false)
+   @JoinColumn(name = "chat_id", nullable = false)
+   val chat: Chat,

-   @ManyToOne(optional = false, targetEntity = User::class)
-   @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "sender_email")
-   val senderEmail: String
+   @ManyToOne(optional = false)
+   @JoinColumn(name = "sender_email", referencedColumnName = "email", nullable = false)
+   val sender: User,
+
+   @Column(columnDefinition = "TEXT", nullable = false)
+   val content: String,
+
+   @Column(nullable = false)
+   val sentAt: LocalDateTime = LocalDateTime.now()
)
```

Don't forget to add: `import java.time.LocalDateTime`


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
import java.time.LocalDateTime

@Entity
class Message(

    @Id
    @Column(columnDefinition = "BINARY(16)", nullable = false)
    val id: UUID,

    @ManyToOne(optional = false)
    @JoinColumn(name = "chat_id", nullable = false)
    val chat: Chat,

    @ManyToOne(optional = false)
    @JoinColumn(name = "sender_email", referencedColumnName = "email", nullable = false)
    val sender: User,

    @Column(columnDefinition = "TEXT", nullable = false)
    val content: String,

    @Column(nullable = false)
    val sentAt: LocalDateTime = LocalDateTime.now()
)
`````

</details>

<!-- suggestion_end -->

<!-- This is an auto-generated reply by CodeRabbit -->

✅ Addressed in commit 30b6ab7

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-03-20T01:01:31Z
author_association: NONE
diff_hunk: @@ -0,0 +1,32 @@
+package dsm.wemeet.domain.room.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.*
+import java.util.UUID
path: src/main/kotlin/dsm/wemeet/domain/room/repository/model/Room.kt
user: login: coderabbitai[bot]
body: _⚠️ Potential issue_

**Fix wildcard import to comply with ktlint.**

The pipeline has flagged a wildcard import that violates ktlint rules.


```diff
- import jakarta.persistence.*
+ import jakarta.persistence.Column
+ import jakarta.persistence.Entity
+ import jakarta.persistence.Id
+ import jakarta.persistence.JoinColumn
+ import jakarta.persistence.ManyToOne
```


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
import dsm.wemeet.domain.user.repository.model.User
import jakarta.persistence.Column
import jakarta.persistence.Entity
import jakarta.persistence.Id
import jakarta.persistence.JoinColumn
import jakarta.persistence.ManyToOne
import java.util.UUID
`````

</details>

<!-- suggestion_end -->

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-03-20T01:01:31Z
author_association: NONE
diff_hunk: @@ -0,0 +1,32 @@
+package dsm.wemeet.domain.room.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.*
+import java.util.UUID
+
+@Entity
+class Room(
+
+    @Id
+    @Column(columnDefinition = "BINARY(16)", nullable = false)
+    val id: UUID,
+
+    @ManyToOne(optional = false, targetEntity = Room::class)
+    @JoinColumn(name = "owner", referencedColumnName = "email", nullable = false)
+    val owner: User,
path: src/main/kotlin/dsm/wemeet/domain/room/repository/model/Room.kt
user: login: coderabbitai[bot]
body: _⚠️ Potential issue_

**Incorrect targetEntity in Room Entity.**

The @ManyToOne annotation incorrectly references Room::class as the target entity instead of User::class.


```diff
-   @ManyToOne(optional = false, targetEntity = Room::class)
+   @ManyToOne(optional = false, targetEntity = User::class)
    @JoinColumn(name = "owner", referencedColumnName = "email", nullable = false)
    val owner: User,
```


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
    @ManyToOne(optional = false, targetEntity = User::class)
    @JoinColumn(name = "owner", referencedColumnName = "email", nullable = false)
    val owner: User,
`````

</details>

<!-- suggestion_end -->

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-03-20T01:01:31Z
author_association: NONE
diff_hunk: @@ -0,0 +1,21 @@
+package dsm.wemeet.domain.room.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.*
+import java.util.*
+
+@Entity
+class Member(
+
+    @Id
+    @Column(columnDefinition = "BINARY(16)", nullable = false)
+    val id: UUID,
+
+    @ManyToOne(optional = false, targetEntity = Room::class)
+    @JoinColumn(name = "room_id", referencedColumnName = "id", nullable = false)
+    val roomId: Room,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(name = "member_email", referencedColumnName = "email", nullable = false)
+    val memberEmail: User
path: src/main/kotlin/dsm/wemeet/domain/room/repository/model/Member.kt
user: login: coderabbitai[bot]
body: _🛠️ Refactor suggestion_

**Property name should match its type**

Similar to the previous issue, `memberEmail` suggests it's an email string, but it's actually a `User` entity.

```diff
-    @ManyToOne(optional = false, targetEntity = User::class)
-    @JoinColumn(name = "member_email", referencedColumnName = "email", nullable = false)
-    val memberEmail: User
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(name = "member_email", referencedColumnName = "email", nullable = false)
+    val user: User
```


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
    @ManyToOne(optional = false, targetEntity = User::class)
    @JoinColumn(name = "member_email", referencedColumnName = "email", nullable = false)
    val user: User
`````

</details>

<!-- suggestion_end -->

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-03-20T01:01:31Z
author_association: NONE
diff_hunk: @@ -0,0 +1,21 @@
+package dsm.wemeet.domain.room.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.*
+import java.util.*
path: src/main/kotlin/dsm/wemeet/domain/room/repository/model/Member.kt
user: login: coderabbitai[bot]
body: _⚠️ Potential issue_

**Replace wildcard imports with specific imports**

The pipeline is failing due to wildcard imports, which violate the ktlint style rules.

```diff
-import jakarta.persistence.*
-import java.util.*
+import jakarta.persistence.Column
+import jakarta.persistence.Entity
+import jakarta.persistence.Id
+import jakarta.persistence.JoinColumn
+import jakarta.persistence.ManyToOne
+import java.util.UUID
```


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
import jakarta.persistence.Column
import jakarta.persistence.Entity
import jakarta.persistence.Id
import jakarta.persistence.JoinColumn
import jakarta.persistence.ManyToOne
import java.util.UUID
`````

</details>

<!-- suggestion_end -->

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-03-20T01:01:32Z
author_association: NONE
diff_hunk: @@ -0,0 +1,21 @@
+package dsm.wemeet.domain.room.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.*
+import java.util.*
+
+@Entity
+class Member(
+
+    @Id
+    @Column(columnDefinition = "BINARY(16)", nullable = false)
+    val id: UUID,
+
+    @ManyToOne(optional = false, targetEntity = Room::class)
+    @JoinColumn(name = "room_id", referencedColumnName = "id", nullable = false)
+    val roomId: Room,
path: src/main/kotlin/dsm/wemeet/domain/room/repository/model/Member.kt
user: login: coderabbitai[bot]
body: _🛠️ Refactor suggestion_

**Property name should match its type**

The property name `roomId` suggests it's just an ID (likely a UUID), but the type is the entire `Room` entity. This is confusing and violates naming conventions.

```diff
-    @ManyToOne(optional = false, targetEntity = Room::class)
-    @JoinColumn(name = "room_id", referencedColumnName = "id", nullable = false)
-    val roomId: Room,
+    @ManyToOne(optional = false, targetEntity = Room::class)
+    @JoinColumn(name = "room_id", referencedColumnName = "id", nullable = false)
+    val room: Room,
```


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
    @ManyToOne(optional = false, targetEntity = Room::class)
    @JoinColumn(name = "room_id", referencedColumnName = "id", nullable = false)
    val room: Room,
`````

</details>

<!-- suggestion_end -->

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-03-20T01:01:32Z
author_association: NONE
diff_hunk: @@ -1,8 +1,7 @@
 package dsm.wemeet.domain.friend.repository.model
 
-import jakarta.persistence.Column
-import jakarta.persistence.Entity
-import jakarta.persistence.Id
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.*
path: src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt
user: login: coderabbitai[bot]
body: _⚠️ Potential issue_

**Replace wildcard imports with specific imports**

The pipeline is failing due to wildcard imports, which violate the ktlint style rules.

```diff
import dsm.wemeet.domain.user.repository.model.User
-import jakarta.persistence.*
+import jakarta.persistence.Column
+import jakarta.persistence.Entity
+import jakarta.persistence.Id
+import jakarta.persistence.JoinColumn
+import jakarta.persistence.ManyToOne
```


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
import dsm.wemeet.domain.user.repository.model.User
import jakarta.persistence.Column
import jakarta.persistence.Entity
import jakarta.persistence.Id
import jakarta.persistence.JoinColumn
import jakarta.persistence.ManyToOne
`````

</details>

<!-- suggestion_end -->

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-03-20T01:01:32Z
author_association: NONE
diff_hunk: @@ -12,6 +11,11 @@
     @Column(columnDefinition = "BINARY(16)", nullable = false)
     val id: UUID? = null,
 
-    @Column(columnDefinition = "VARCHAR(4)", nullable = false)
-    val testColumn: String
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "proposer_email")
+    val proposerEmail: String,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "receiver_email")
+    val receiverEmail: String
path: src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt
user: login: coderabbitai[bot]
body: _⚠️ Potential issue_

**Type mismatch between annotation and property**

Same issue as with `proposerEmail` - there's a mismatch between the `@ManyToOne` annotation and the `String` property type.

Either change the property type to `User`:
```diff
    @ManyToOne(optional = false, targetEntity = User::class)
    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "receiver_email")
-   val receiverEmail: String
+   val receiver: User
```

Or remove the `@ManyToOne` annotation:
```diff
-   @ManyToOne(optional = false, targetEntity = User::class)
    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "receiver_email")
    val receiverEmail: String
```


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
    @ManyToOne(optional = false, targetEntity = User::class)
    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "receiver_email")
    val receiver: User
`````

</details>

<!-- suggestion_end -->

<!-- This is an auto-generated reply by CodeRabbit -->
created_at: 2025-03-20T01:01:32Z
author_association: NONE
diff_hunk: @@ -12,6 +11,11 @@
     @Column(columnDefinition = "BINARY(16)", nullable = false)
     val id: UUID? = null,
 
-    @Column(columnDefinition = "VARCHAR(4)", nullable = false)
-    val testColumn: String
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "proposer_email")
+    val proposerEmail: String,
path: src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt
user: login: coderabbitai[bot]
body: _⚠️ Potential issue_

**Type mismatch between annotation and property**

The `@ManyToOne` annotation suggests a relationship to a `User` entity, but the property type is `String`. This creates a mismatch between the annotation and the actual property.

Either change the property type to `User` if you want to store the full entity relationship:
```diff
    @ManyToOne(optional = false, targetEntity = User::class)
    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "proposer_email")
-   val proposerEmail: String,
+   val proposer: User,
```

Or remove the `@ManyToOne` annotation if you only want to store the email as a foreign key:
```diff
-   @ManyToOne(optional = false, targetEntity = User::class)
    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "proposer_email")
    val proposerEmail: String,
```


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
    @ManyToOne(optional = false, targetEntity = User::class)
    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "proposer_email")
    val proposer: User,
`````

`````suggestion
    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "proposer_email")
    val proposerEmail: String,
`````

</details>

<!-- suggestion_end -->

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-03-20T01:01:32Z
author_association: NONE
diff_hunk: @@ -0,0 +1,21 @@
+package dsm.wemeet.domain.chat.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.*
+import java.util.*
+
+@Entity
+class Chat(
+
+    @Id
+    @Column(columnDefinition = "BINARY(16)", nullable = false)
+    val id: UUID? = null,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "user1_email")
+    val user1Email: String,
path: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Chat.kt
user: login: coderabbitai[bot]
body: _⚠️ Potential issue_

**Type mismatch between annotation and property**

The `@ManyToOne` annotations suggest relationships to `User` entities, but the property types are `String`. This creates a mismatch between the annotations and the actual properties.

Either change the property types to `User` if you want to store full entity relationships:
```diff
    @ManyToOne(optional = false, targetEntity = User::class)
    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "user1_email")
-   val user1Email: String,
+   val user1: User,

    @ManyToOne(optional = false, targetEntity = User::class)
    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "user2_email")
-   val user2Email: String
+   val user2: User
```

Or remove the `@ManyToOne` annotations if you only want to store the emails as foreign keys:
```diff
-   @ManyToOne(optional = false, targetEntity = User::class)
    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "user1_email")
    val user1Email: String,

-   @ManyToOne(optional = false, targetEntity = User::class)
    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "user2_email")
    val user2Email: String
```


Also applies to: 18-20

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-03-20T01:01:32Z
author_association: NONE
diff_hunk: @@ -0,0 +1,21 @@
+package dsm.wemeet.domain.chat.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.*
+import java.util.*
path: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Chat.kt
user: login: coderabbitai[bot]
body: _⚠️ Potential issue_

**Replace wildcard imports with specific imports**

The pipeline is failing due to wildcard imports, which violate the ktlint style rules.

```diff
-import jakarta.persistence.*
-import java.util.*
+import jakarta.persistence.Column
+import jakarta.persistence.Entity
+import jakarta.persistence.Id
+import jakarta.persistence.JoinColumn
+import jakarta.persistence.ManyToOne
+import java.util.UUID
```


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
import jakarta.persistence.Column
import jakarta.persistence.Entity
import jakarta.persistence.Id
import jakarta.persistence.JoinColumn
import jakarta.persistence.ManyToOne
import java.util.UUID
`````

</details>

<!-- suggestion_end -->

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-03-20T01:01:32Z
author_association: NONE
diff_hunk: @@ -0,0 +1,21 @@
+package dsm.wemeet.domain.chat.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.*
+import java.util.*
+
+@Entity
+class Chat(
+
+    @Id
+    @Column(columnDefinition = "BINARY(16)", nullable = false)
+    val id: UUID? = null,
path: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Chat.kt
user: login: coderabbitai[bot]
body: _🛠️ Refactor suggestion_

**Define an explicit non-null ID or use GeneratedValue**

The current implementation allows the ID to be null, which is unusual for a primary key. If you're expecting IDs to be auto-generated, use the `@GeneratedValue` annotation.

```diff
    @Id
+   @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(columnDefinition = "BINARY(16)", nullable = false)
-   val id: UUID? = null,
+   val id: UUID = UUID.randomUUID(),
```


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(columnDefinition = "BINARY(16)", nullable = false)
    val id: UUID = UUID.randomUUID(),
`````

</details>

<!-- suggestion_end -->

<!-- This is an auto-generated comment by CodeRabbit -->
created_at: 2025-03-20T01:01:32Z
author_association: NONE
diff_hunk: @@ -0,0 +1,21 @@
+package dsm.wemeet.domain.chat.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.*
+import java.util.*
+
+@Entity
+class Message(
+
+    @Id
+    @Column(columnDefinition = "BINARY(16)", nullable = false)
+    val id: UUID? = null,
+
+    @ManyToOne(optional = false, targetEntity = Chat::class)
+    @JoinColumn(columnDefinition = "BINARY(16)", nullable = false, name = "chat_id")
+    val chatId: UUID,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "sender_email")
+    val senderEmail: String
+)
path: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt
user: login: zios0707
body: 한국어로 다시 설명해봐
created_at: 2025-03-20T01:14:54Z
author_association: CONTRIBUTOR
diff_hunk: @@ -0,0 +1,21 @@
+package dsm.wemeet.domain.chat.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.*
+import java.util.*
+
+@Entity
+class Message(
+
+    @Id
+    @Column(columnDefinition = "BINARY(16)", nullable = false)
+    val id: UUID? = null,
+
+    @ManyToOne(optional = false, targetEntity = Chat::class)
+    @JoinColumn(columnDefinition = "BINARY(16)", nullable = false, name = "chat_id")
+    val chatId: UUID,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "sender_email")
+    val senderEmail: String
+)
path: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt
user: login: coderabbitai[bot]
body: @zios0707 **⚠️ 잠재적 문제**

**잘못된 엔티티 관계 설정 및 누락된 메시지 내용.**

이 Message 엔티티에는 몇 가지 문제가 있습니다:

1. ID가 nullable(`UUID?`)로 선언되었지만 컬럼은 non-nullable로 표시되어 있어 모순됩니다
2. 엔티티 관계가 잘못 모델링되었습니다 - 실제 엔티티 참조 대신 UUID와 문자열을 저장하고 있습니다
3. 메시지에 내용(content)과 타임스탬프(timestamp)와 같은 중요 필드가 누락되었습니다

다음과 같이 수정하는 것이 좋습니다:

```diff
@Entity
class Message(

    @Id
    @Column(columnDefinition = "BINARY(16)", nullable = false)
-   val id: UUID? = null,
+   val id: UUID,

-   @ManyToOne(optional = false, targetEntity = Chat::class)
-   @JoinColumn(columnDefinition = "BINARY(16)", nullable = false, name = "chat_id")
-   val chatId: UUID,
+   @ManyToOne(optional = false)
+   @JoinColumn(name = "chat_id", nullable = false)
+   val chat: Chat,

-   @ManyToOne(optional = false, targetEntity = User::class)
-   @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "sender_email")
-   val senderEmail: String
+   @ManyToOne(optional = false)
+   @JoinColumn(name = "sender_email", referencedColumnName = "email", nullable = false)
+   val sender: User,
+
+   @Column(columnDefinition = "TEXT", nullable = false)
+   val content: String,
+
+   @Column(nullable = false)
+   val sentAt: LocalDateTime = LocalDateTime.now()
)
```

`import java.time.LocalDateTime`도 추가하는 것을 잊지 마세요.

---

<details>
<summary>✏️ Learnings added</summary>

```
Learnt from: zios0707
PR: BremenMusicians/WeMeet_BE#13
File: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt:7-21
Timestamp: 2025-03-20T01:15:26.238Z
Learning: The user zios0707 prefers explanations in Korean.
```

> Note: Learnings are effective only in the context of similar code segments. To apply general coding guidelines, please configure [review instructions](https://docs.coderabbit.ai/guides/review-instructions). You can manage existing learnings in the [app](https://app.coderabbit.ai/learnings).

</details>

<!-- This is an auto-generated reply by CodeRabbit -->
created_at: 2025-03-20T01:15:27Z
author_association: NONE
diff_hunk: @@ -0,0 +1,21 @@
+package dsm.wemeet.domain.chat.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.*
+import java.util.*
+
+@Entity
+class Message(
+
+    @Id
+    @Column(columnDefinition = "BINARY(16)", nullable = false)
+    val id: UUID? = null,
+
+    @ManyToOne(optional = false, targetEntity = Chat::class)
+    @JoinColumn(columnDefinition = "BINARY(16)", nullable = false, name = "chat_id")
+    val chatId: UUID,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "sender_email")
+    val senderEmail: String
+)
path: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt
user: login: zios0707
body: column definition 을 관계 외 컬럼에 전부 적용시키고 싶은데 어떻게 생각해?
created_at: 2025-03-20T01:20:51Z
author_association: CONTRIBUTOR
diff_hunk: @@ -0,0 +1,21 @@
+package dsm.wemeet.domain.chat.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.*
+import java.util.*
+
+@Entity
+class Message(
+
+    @Id
+    @Column(columnDefinition = "BINARY(16)", nullable = false)
+    val id: UUID? = null,
+
+    @ManyToOne(optional = false, targetEntity = Chat::class)
+    @JoinColumn(columnDefinition = "BINARY(16)", nullable = false, name = "chat_id")
+    val chatId: UUID,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "sender_email")
+    val senderEmail: String
+)
path: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt
user: login: coderabbitai[bot]
body: @zios0707 관계 외 컬럼에 `columnDefinition`을 모두 적용하는 것에 대한 제 생각입니다:

### 장점
- 데이터베이스 스키마를 더 정확하게 제어할 수 있습니다
- 특정 데이터베이스 타입으로 최적화된 저장 공간과 성능을 얻을 수 있습니다
- 데이터 무결성을 데이터베이스 수준에서 더 강하게 보장할 수 있습니다

### 단점
- 데이터베이스 이식성이 감소합니다 (일부 SQL 타입은 특정 데이터베이스에만 있음)
- 코드가 더 장황해집니다
- 나중에 데이터 타입을 변경할 때 유지보수 부담이 증가합니다
- 특정 데이터베이스 구현에 더 강하게 결합됩니다

만약 프로젝트가 특정 데이터베이스만 사용할 예정이고, 스키마를 정확하게 제어하는 것이 중요하다면 모든 컬럼에 정의를 적용하는 것이 좋습니다. 하지만 이식성과 유지보수를 고려한다면, 꼭 필요한 컬럼에만 적용하는 것도 방법입니다.

예를 들어, TEXT 타입이나 특정 길이 제한이 필요한 VARCHAR 같은 경우에는 명시적으로 정의하고, 나머지는 JPA가 적절히 추론하도록 하는 방식이 균형 있는 접근법입니다.

---

<details>
<summary>🧠 Learnings used</summary>

```
Learnt from: zios0707
PR: BremenMusicians/WeMeet_BE#13
File: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt:7-21
Timestamp: 2025-03-20T01:15:26.413Z
Learning: The user zios0707 prefers explanations in Korean.
```

</details>

<!-- This is an auto-generated reply by CodeRabbit -->
created_at: 2025-03-20T01:21:22Z
author_association: NONE
diff_hunk: @@ -0,0 +1,21 @@
+package dsm.wemeet.domain.chat.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.*
+import java.util.*
+
+@Entity
+class Message(
+
+    @Id
+    @Column(columnDefinition = "BINARY(16)", nullable = false)
+    val id: UUID? = null,
+
+    @ManyToOne(optional = false, targetEntity = Chat::class)
+    @JoinColumn(columnDefinition = "BINARY(16)", nullable = false, name = "chat_id")
+    val chatId: UUID,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "sender_email")
+    val senderEmail: String
+)
path: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt
user: login: zios0707
body: 해당 프로젝트는 이 이상 도메인이 커질 우려가 없어보여. 그러니 컬럼 정의 속성을 넣는걸로 할게
created_at: 2025-03-20T01:28:43Z
author_association: CONTRIBUTOR
diff_hunk: @@ -0,0 +1,21 @@
+package dsm.wemeet.domain.chat.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.*
+import java.util.*
+
+@Entity
+class Message(
+
+    @Id
+    @Column(columnDefinition = "BINARY(16)", nullable = false)
+    val id: UUID? = null,
+
+    @ManyToOne(optional = false, targetEntity = Chat::class)
+    @JoinColumn(columnDefinition = "BINARY(16)", nullable = false, name = "chat_id")
+    val chatId: UUID,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "sender_email")
+    val senderEmail: String
+)
path: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt
user: login: coderabbitai[bot]
body: @zios0707 네, 이해했습니다. 프로젝트 규모를 고려했을 때 컬럼 정의 속성을 명시적으로 추가하는 것은 좋은 선택입니다. 데이터베이스 스키마를 더 명확하게 제어할 수 있을 것입니다. 변경사항 적용 후에 필요한 도움이 있으시면 말씀해주세요.

---

<details>
<summary>🧠 Learnings used</summary>

```
Learnt from: zios0707
PR: BremenMusicians/WeMeet_BE#13
File: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt:7-21
Timestamp: 2025-03-20T01:15:26.413Z
Learning: The user zios0707 prefers explanations in Korean.
```

</details>

<!-- This is an auto-generated reply by CodeRabbit -->
created_at: 2025-03-20T01:29:11Z
author_association: NONE
diff_hunk: @@ -0,0 +1,21 @@
+package dsm.wemeet.domain.chat.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.*
+import java.util.*
+
+@Entity
+class Message(
+
+    @Id
+    @Column(columnDefinition = "BINARY(16)", nullable = false)
+    val id: UUID? = null,
+
+    @ManyToOne(optional = false, targetEntity = Chat::class)
+    @JoinColumn(columnDefinition = "BINARY(16)", nullable = false, name = "chat_id")
+    val chatId: UUID,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "sender_email")
+    val senderEmail: String
+)
path: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt
user: login: zios0707
body: 아 근데 관계 컬럼에 속성 정의를 넣는건 어떻게 생각해? 나는 별로라고 생각하긴하는데
created_at: 2025-03-20T01:30:32Z
author_association: CONTRIBUTOR
diff_hunk: @@ -0,0 +1,21 @@
+package dsm.wemeet.domain.chat.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.*
+import java.util.*
+
+@Entity
+class Message(
+
+    @Id
+    @Column(columnDefinition = "BINARY(16)", nullable = false)
+    val id: UUID? = null,
+
+    @ManyToOne(optional = false, targetEntity = Chat::class)
+    @JoinColumn(columnDefinition = "BINARY(16)", nullable = false, name = "chat_id")
+    val chatId: UUID,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "sender_email")
+    val senderEmail: String
+)
path: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt
user: login: coderabbitai[bot]
body: @zios0707 관계 컬럼에 columnDefinition을 명시적으로 넣는 것은 저도 별로 좋지 않다고 생각합니다. 그 이유는:

1. JPA는 참조 엔티티의 ID 타입을 기반으로 자동으로 적절한 타입 매핑을 처리합니다
2. columnDefinition을 명시하면 데이터베이스 간 이식성에 문제가 생길 수 있습니다
3. JPA의 관계 관리 메커니즘과 충돌할 가능성이 있습니다
4. 코드에 불필요한 복잡성을 추가합니다
5. 참조된 엔티티의 ID 타입이 변경되면 columnDefinition도 함께 업데이트해야 합니다

그래서 관계 컬럼의 경우 `@JoinColumn`에 name과 nullable 같은 기본적인 속성만 지정하고, 타입 매핑은 JPA가 자동으로 처리하도록 두는 것이 더 좋습니다.

---

<details>
<summary>🧠 Learnings used</summary>

```
Learnt from: zios0707
PR: BremenMusicians/WeMeet_BE#13
File: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt:7-21
Timestamp: 2025-03-20T01:15:26.413Z
Learning: The user zios0707 prefers explanations in Korean.
```

</details>

---

<details>
<summary>🧠 Learnings used</summary>

```
Learnt from: zios0707
PR: BremenMusicians/WeMeet_BE#13
File: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt:7-21
Timestamp: 2025-03-20T01:15:26.413Z
Learning: The user zios0707 prefers explanations in Korean.
```

</details>

<!-- This is an auto-generated reply by CodeRabbit -->
created_at: 2025-03-20T01:31:05Z
author_association: NONE
diff_hunk: @@ -0,0 +1,21 @@
+package dsm.wemeet.domain.chat.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.*
+import java.util.*
+
+@Entity
+class Message(
+
+    @Id
+    @Column(columnDefinition = "BINARY(16)", nullable = false)
+    val id: UUID? = null,
+
+    @ManyToOne(optional = false, targetEntity = Chat::class)
+    @JoinColumn(columnDefinition = "BINARY(16)", nullable = false, name = "chat_id")
+    val chatId: UUID,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "sender_email")
+    val senderEmail: String
+)
path: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt
user: login: zios0707
body: 그리고 네가 코드 수정 제안에서 ManyToOne 어노테이션의 targetEntity를 빼버리도록 제안을 했던데 그 이유가 있어?
created_at: 2025-03-20T01:32:43Z
author_association: CONTRIBUTOR
diff_hunk: @@ -0,0 +1,21 @@
+package dsm.wemeet.domain.chat.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.*
+import java.util.*
+
+@Entity
+class Message(
+
+    @Id
+    @Column(columnDefinition = "BINARY(16)", nullable = false)
+    val id: UUID? = null,
+
+    @ManyToOne(optional = false, targetEntity = Chat::class)
+    @JoinColumn(columnDefinition = "BINARY(16)", nullable = false, name = "chat_id")
+    val chatId: UUID,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "sender_email")
+    val senderEmail: String
+)
path: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt
user: login: coderabbitai[bot]
body: @zios0707 `targetEntity` 속성을 제거하도록 제안한 이유는 다음과 같습니다:

`@ManyToOne` 어노테이션에서 `targetEntity` 속성은 주로 다음과 같은 특수한 상황에서 필요합니다:
1. 제네릭을 사용하여 타입 소거(type erasure)가 발생할 수 있는 경우
2. 인터페이스나 상위 클래스 타입을 사용할 때 실제 구현체를 명시해야 하는 경우
3. 컬렉션에서 제네릭 타입을 명시하지 않을 때

하지만 제 수정 제안에서는 속성 타입을 직접적인 엔티티 클래스로 변경했습니다:
```kotlin
val chat: Chat  // chatId: UUID 대신
val sender: User  // senderEmail: String 대신
```

이렇게 속성 타입이 이미 엔티티 클래스를 명시하고 있으므로, JPA가 자동으로 타입을 인식할 수 있어 `targetEntity` 속성이 불필요해집니다. 코드를 더 간결하고 명확하게 유지하기 위해 제거를 제안했습니다.

---

<details>
<summary>🧠 Learnings used</summary>

```
Learnt from: zios0707
PR: BremenMusicians/WeMeet_BE#13
File: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt:7-21
Timestamp: 2025-03-20T01:15:26.413Z
Learning: The user zios0707 prefers explanations in Korean.
```

</details>

---

<details>
<summary>🧠 Learnings used</summary>

```
Learnt from: zios0707
PR: BremenMusicians/WeMeet_BE#13
File: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt:7-21
Timestamp: 2025-03-20T01:15:26.413Z
Learning: The user zios0707 prefers explanations in Korean.
```

</details>

<!-- This is an auto-generated reply by CodeRabbit -->
created_at: 2025-03-20T01:33:18Z
author_association: NONE
diff_hunk: @@ -12,6 +11,11 @@
     @Column(columnDefinition = "BINARY(16)", nullable = false)
     val id: UUID? = null,
 
-    @Column(columnDefinition = "VARCHAR(4)", nullable = false)
-    val testColumn: String
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "proposer_email")
+    val proposerEmail: String,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "receiver_email")
+    val receiverEmail: String
path: src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt
user: login: zios0707
body: ManyToOne 주석을 지우는 건에 대해서 더 자세하게 설명해줄래? 무슨 이유인지?
created_at: 2025-03-20T01:42:14Z
author_association: CONTRIBUTOR
diff_hunk: @@ -12,6 +11,11 @@
     @Column(columnDefinition = "BINARY(16)", nullable = false)
     val id: UUID? = null,
 
-    @Column(columnDefinition = "VARCHAR(4)", nullable = false)
-    val testColumn: String
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "proposer_email")
+    val proposerEmail: String,
+
+    @ManyToOne(optional = false, targetEntity = User::class)
+    @JoinColumn(columnDefinition = "VARCHAR(50)", nullable = false, name = "receiver_email")
+    val receiverEmail: String
path: src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt
user: login: coderabbitai[bot]
body: @zios0707 `@ManyToOne` 애노테이션을 제거하라고 제안한 이유는 타입 불일치 때문입니다:

`@ManyToOne` 애노테이션은 엔티티 간의 관계를 설정하는 것으로, 일반적으로 그 속성은 엔티티 타입(여기서는 `User` 클래스)이어야 합니다. 하지만 현재 코드에서는 `receiverEmail`이 `String` 타입으로 선언되어 있어 불일치가 발생합니다.

두 가지 해결 방법이 있습니다:

1. **엔티티 관계를 유지하고 싶다면**: 속성 타입을 `User`로 변경하고 이름도 의미에 맞게 바꿉니다.
   ```kotlin
   @ManyToOne(optional = false)
   @JoinColumn(name = "receiver_email", nullable = false)
   val receiver: User
   ```

2. **단순히 이메일 문자열만 저장하고 싶다면**: `@ManyToOne` 애노테이션을 제거합니다.
   ```kotlin
   @Column(name = "receiver_email", nullable = false)
   val receiverEmail: String
   ```

현재 코드 형태로는 JPA가 엔티티 매핑 시 혼란을 겪을 수 있습니다. 데이터베이스 설계 의도에 따라 둘 중 하나를 선택하시면 됩니다.

---

<details>
<summary>✏️ Learnings added</summary>

```
Learnt from: zios0707
PR: BremenMusicians/WeMeet_BE#13
File: src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt:18-20
Timestamp: 2025-03-20T01:42:56.403Z
Learning: In JPA/Hibernate entity mapping, the `@ManyToOne` annotation should be used with properties of entity type (e.g., User), not primitive types like String. When a property is annotated with `@ManyToOne`, its type should match the target entity class specified in the annotation.
```

> Note: Learnings are effective only in the context of similar code segments. To apply general coding guidelines, please configure [review instructions](https://docs.coderabbit.ai/guides/review-instructions). You can manage existing learnings in the [app](https://app.coderabbit.ai/learnings).

</details>

<!-- This is an auto-generated reply by CodeRabbit -->
created_at: 2025-03-20T01:42:57Z
author_association: NONE
diff_hunk: @@ -0,0 +1,25 @@
+package dsm.wemeet.domain.room.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.Column
+import jakarta.persistence.Entity
+import jakarta.persistence.Id
+import jakarta.persistence.JoinColumn
+import jakarta.persistence.ManyToOne
+import java.util.UUID
+
+@Entity
+class Member(
+
+    @Id
+    @Column(columnDefinition = "BINARY(16)", nullable = false)
+    val id: UUID? = null,
path: src/main/kotlin/dsm/wemeet/domain/room/repository/model/Member.kt
user: login: coderabbitai[bot]
body: _🛠️ Refactor suggestion_

**Inconsistency between Kotlin nullability and database constraints**

The `id` property is declared as nullable (`UUID?`) in Kotlin, but the database column is marked as `nullable = false`. This creates a mismatch between your code model and database schema.


```diff
-    val id: UUID? = null,
+    val id: UUID,
```


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
    val id: UUID,
`````

</details>

<!-- suggestion_end -->

<!-- This is an auto-generated comment by CodeRabbit -->

✅ Addressed in commit c287702
created_at: 2025-03-20T02:00:34Z
author_association: NONE
diff_hunk: @@ -12,6 +15,14 @@ class Friend(
     @Column(columnDefinition = "BINARY(16)", nullable = false)
     val id: UUID? = null,
 
-    @Column(columnDefinition = "VARCHAR(4)", nullable = false)
-    val testColumn: String
+    @ManyToOne(optional = , targetEntity = User::class)
path: src/main/kotlin/dsm/wemeet/domain/friend/repository/model/Friend.kt
user: login: coderabbitai[bot]
body: _⚠️ Potential issue_

**@ManyToOne 어노테이션에 구문 오류가 있습니다.**

`optional` 속성에 값이 누락되었습니다. 이로 인해 ktlint 파싱 오류가 발생하고 있습니다.

```diff
- @ManyToOne(optional = , targetEntity = User::class)
+ @ManyToOne(optional = false, targetEntity = User::class)
```


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
    @ManyToOne(optional = false, targetEntity = User::class)
`````

</details>

<!-- suggestion_end -->

<!-- This is an auto-generated comment by CodeRabbit -->

✅ Addressed in commit c287702
created_at: 2025-03-20T02:00:34Z
author_association: NONE
diff_hunk: @@ -0,0 +1,36 @@
+package dsm.wemeet.domain.chat.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.Column
+import jakarta.persistence.Entity
+import jakarta.persistence.GeneratedValue
+import jakarta.persistence.GenerationType
+import jakarta.persistence.Id
+import jakarta.persistence.JoinColumn
+import jakarta.persistence.ManyToOne
+import java.time.LocalDateTime
+import java.util.UUID
path: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt
user: login: coderabbitai[bot]
body: _⚠️ Potential issue_

**Chat 클래스 import 누락**

현재 코드에서 Chat 클래스를 사용하고 있지만 해당 클래스의 import 문이 누락되어 있습니다. 이로 인해 컴파일 오류가 발생할 수 있습니다.


다음과 같이 import 문을 추가하세요:
```diff
import dsm.wemeet.domain.user.repository.model.User
+import dsm.wemeet.domain.chat.repository.model.Chat
import jakarta.persistence.Column
```


<!-- suggestion_start -->

<details>
<summary>📝 Committable suggestion</summary>

> ‼️ **IMPORTANT**
> Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

`````suggestion
import dsm.wemeet.domain.user.repository.model.User
import dsm.wemeet.domain.chat.repository.model.Chat
import jakarta.persistence.Column
import jakarta.persistence.Entity
import jakarta.persistence.GeneratedValue
import jakarta.persistence.GenerationType
import jakarta.persistence.Id
import jakarta.persistence.JoinColumn
import jakarta.persistence.ManyToOne
import java.time.LocalDateTime
import java.util.UUID
`````

</details>

<!-- suggestion_end -->

<!-- This is an auto-generated reply by CodeRabbit -->
created_at: 2025-03-20T02:05:32Z
author_association: NONE
diff_hunk: @@ -0,0 +1,36 @@
+package dsm.wemeet.domain.chat.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.Column
+import jakarta.persistence.Entity
+import jakarta.persistence.GeneratedValue
+import jakarta.persistence.GenerationType
+import jakarta.persistence.Id
+import jakarta.persistence.JoinColumn
+import jakarta.persistence.ManyToOne
+import java.time.LocalDateTime
+import java.util.UUID
path: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt
user: login: zios0707
body: 어짜피 같은 디렉토리라서 자동 임포트가 되지 않아?  단독 파일로 보자면 문제가 있긴한데 빌드나 컴파일에는 문제가 없을 것 같아.
created_at: 2025-03-20T02:11:01Z
author_association: CONTRIBUTOR
diff_hunk: @@ -0,0 +1,36 @@
+package dsm.wemeet.domain.chat.repository.model
+
+import dsm.wemeet.domain.user.repository.model.User
+import jakarta.persistence.Column
+import jakarta.persistence.Entity
+import jakarta.persistence.GeneratedValue
+import jakarta.persistence.GenerationType
+import jakarta.persistence.Id
+import jakarta.persistence.JoinColumn
+import jakarta.persistence.ManyToOne
+import java.time.LocalDateTime
+import java.util.UUID
path: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt
user: login: coderabbitai[bot]
body: @zios0707 네, 맞습니다. 같은 패키지(`dsm.wemeet.domain.chat.repository.model`) 내에 있는 클래스는 Kotlin에서 자동으로 참조되기 때문에 명시적인 import 문이 필요하지 않습니다. 빌드나 컴파일에는 전혀 문제가 없을 것입니다. 알려주셔서 감사합니다!

---

<details>
<summary>✏️ Learnings added</summary>

```
Learnt from: zios0707
PR: BremenMusicians/WeMeet_BE#13
File: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt:3-12
Timestamp: 2025-03-20T02:11:31.298Z
Learning: In Kotlin, classes in the same package do not require explicit imports. The user zios0707 prefers to keep the code clean without unnecessary import statements when classes are in the same package.
```

> Note: Learnings are effective only in the context of similar code segments. To apply general coding guidelines, please configure [review instructions](https://docs.coderabbit.ai/guides/review-instructions). You can manage existing learnings in the [app](https://app.coderabbit.ai/learnings).

</details>

---

<details>
<summary>🧠 Learnings used</summary>

```
Learnt from: zios0707
PR: BremenMusicians/WeMeet_BE#13
File: src/main/kotlin/dsm/wemeet/domain/chat/repository/model/Message.kt:7-21
Timestamp: 2025-03-20T01:15:26.413Z
Learning: The user zios0707 prefers explanations in Korean.
```

</details>

<!-- This is an auto-generated reply by CodeRabbit -->
created_at: 2025-03-20T02:11:32Z
author_association: NONE
diff_hunk: @@ -0,0 +1,28 @@
+package dsm.wemeet.domain.user.repository.model
+
+import jakarta.persistence.Column
+import jakarta.persistence.Entity
+import jakarta.persistence.Id
+
+@Entity
+class User(
+
+    @Id
+    @Column(columnDefinition = "VARCHAR(50)", nullable = false)
+    val email: String,
+
+    @Column(columnDefinition = "CHAR(255)", nullable = false)
+    val password: String,
+
+    @Column(columnDefinition = "VARCHAR(20)", nullable = false, name = "account_id")
+    val accountId: String,
+
+    @Column(columnDefinition = "CHAR(255)", nullable = true)
+    val profile: String,
+
+    @Column(columnDefinition = "VARCHAR(255)", nullable = true, name = "about_me")
+    val aboutMe: String,
+
+    @Column(columnDefinition = "VARCHAR(40)", nullable = true)
path: src/main/kotlin/dsm/wemeet/domain/user/repository/model/User.kt
user: login: meltapplee
body: 회원가입 로직에서 포지션을 선택하고 넘어가는것으로 알고있는데 nullable false로 변경하는게 낫지않을까요?
created_at: 2025-03-20T02:53:48Z
author_association: MEMBER
diff_hunk: @@ -0,0 +1,28 @@
+package dsm.wemeet.domain.user.repository.model
+
+import jakarta.persistence.Column
+import jakarta.persistence.Entity
+import jakarta.persistence.Id
+
+@Entity
+class User(
+
+    @Id
+    @Column(columnDefinition = "VARCHAR(50)", nullable = false)
+    val email: String,
+
+    @Column(columnDefinition = "CHAR(255)", nullable = false)
+    val password: String,
+
+    @Column(columnDefinition = "VARCHAR(20)", nullable = false, name = "account_id")
path: src/main/kotlin/dsm/wemeet/domain/user/repository/model/User.kt
user: login: meltapplee
body: unique 설정해주실 수 있나요?
created_at: 2025-03-20T02:55:48Z
author_association: MEMBER
diff_hunk: @@ -0,0 +1,28 @@
+package dsm.wemeet.domain.user.repository.model
+
+import jakarta.persistence.Column
+import jakarta.persistence.Entity
+import jakarta.persistence.Id
+
+@Entity
+class User(
+
+    @Id
+    @Column(columnDefinition = "VARCHAR(50)", nullable = false)
+    val email: String,
+
+    @Column(columnDefinition = "CHAR(255)", nullable = false)
+    val password: String,
+
+    @Column(columnDefinition = "VARCHAR(20)", nullable = false, name = "account_id")
+    val accountId: String,
+
+    @Column(columnDefinition = "CHAR(255)", nullable = true)
+    val profile: String,
+
+    @Column(columnDefinition = "VARCHAR(255)", nullable = true, name = "about_me")
+    val aboutMe: String,
+
+    @Column(columnDefinition = "VARCHAR(40)", nullable = true)
path: src/main/kotlin/dsm/wemeet/domain/user/repository/model/User.kt
user: login: zios0707
body: 아 실수로 nullable로 만들었네요
created_at: 2025-03-20T04:11:53Z
author_association: CONTRIBUTOR

PR comments:
user: login: coderabbitai[bot]
created_at: 2025-03-20T00:57:40Z
body: <!-- This is an auto-generated comment: summarize by coderabbit.ai -->
<!-- walkthrough_start -->

## Walkthrough

이 풀 리퀘스트는 Spring Data를 사용하여 여러 새로운 리포지토리 인터페이스와 JPA 엔티티 모델을 추가한다. 새로운 엔티티에는 Chat, Message, Member, Room, User가 포함되며, Instrument 열거형도 추가되었다. 또한 Friend 엔티티는 불필요한 속성을 제거하고 두 개의 새로운 속성을 추가하여 업데이트되었다. 이러한 변경 사항은 다양한 도메인 객체에 대한 지속성 계층과 엔티티 매핑을 설정하는 데 기여한다.

## Changes

| Files | Change Summary |
| --- | --- |
| `src/.../chat/repository/ChatJpaRepository.kt`, `src/.../chat/repository/MessageJpaRepository.kt`, `src/.../room/repository/MemberJpaRepository.kt`, `src/.../room/repository/RoomJpaRepository.kt`, `src/.../user/repository/UserJpaRepository.kt` | Chat, Message, Member, Room, User 엔티티에 대한 표준 CRUD 작업을 위한 새로운 리포지토리 인터페이스 추가. |
| `src/.../chat/repository/model/Chat.kt`, `src/.../chat/repository/model/Message.kt`, `src/.../room/repository/model/Member.kt`, `src/.../room/repository/model/Room.kt`, `src/.../user/repository/model/User.kt`, `src/.../room/repository/model/Instrument.kt` | 도메인 객체 및 그 매핑을 정의하기 위한 새로운 JPA 엔티티 모델과 Instrument 열거형 도입. |
| `src/.../friend/repository/model/Friend.kt` | `testColumn` 속성을 제거하고 `proposer` 및 `receiver` 속성을 추가하여 Friend 엔티티 업데이트. |

## Assessment against linked issues

| Objective           | Addressed | Explanation |
| ------------------- | --------- | ----------- |
| 엔티티 매핑 (#10)   | ✅        |             |

## Poem

> 나는 멋진 코드의 들판을 뛰어다녀,  
> 새로운 엔티티가 기쁜 모드로 나타나.  
> 채팅, 메시지, 방이 줄을 서,  
> 각 리포지토리가 이제 멋져 보이네.  
> 매번 변화에 내 심장은 뛰어,  
> 버그는 사라지고, 기쁨이 넘쳐! 🐇✨

<!-- walkthrough_end -->


---

<details>
<summary>📜 Recent review details</summary>

**Configuration used: CodeRabbit UI**
**Review profile: CHILL**
**Plan: Pro**

<details>
<summary>📥 Commits</summary>

Reviewing files that changed from the base of the PR and between 1a8545c2f7ceed051ade0b525687feb06aa09b8a and 70ad4e3d2c0e3668cba5ac148ddadd3c64d1ffd6.

</details>

<details>
<summary>📒 Files selected for processing (1)</summary>

* `src/main/kotlin/dsm/wemeet/domain/user/repository/model/User.kt` (1 hunks)

</details>

<details>
<summary>🚧 Files skipped from review as they are similar to previous changes (1)</summary>

* src/main/kotlin/dsm/wemeet/domain/user/repository/model/User.kt

</details>

</details>
<!-- internal state start -->


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author_association: NONE
user: login: zios0707
created_at: 2025-03-20T02:18:05Z
body: @coderabbitai review
author_association: CONTRIBUTOR
user: login: coderabbitai[bot]
created_at: 2025-03-20T02:18:11Z
body: <!-- This is an auto-generated reply by CodeRabbit -->
<details>
<summary>:white_check_mark: Actions performed</summary>

Review triggered.

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author_association: NONE