✨ [STMT-254] 활동 도메인 영속화를 위한 JPA 엔티티 및 컨버터 정의

src/main/java/com/stumeet/server/activity/adapter/out/mapper/ActivityStatusConverter.java

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+package com.stumeet.server.activity.adapter.out.mapper;
+
+import com.stumeet.server.activity.domain.exception.NotExistsActivityStatusException;
+import com.stumeet.server.activity.domain.model.ActivityStatus;
+import com.stumeet.server.activity.domain.model.AssignmentStatus;
+import com.stumeet.server.activity.domain.model.DefaultStatus;
+import com.stumeet.server.activity.domain.model.MeetStatus;
+import jakarta.persistence.AttributeConverter;
+
+import java.util.stream.Stream;
+
+public class ActivityStatusConverter implements AttributeConverter<ActivityStatus, String> {
+    @Override
+    public String convertToDatabaseColumn(ActivityStatus activityStatus) {
+        return activityStatus.getStatus();
+    }
+
+    @Override
+    public ActivityStatus convertToEntityAttribute(String s) {
+        return Stream.of(MeetStatus.values(), DefaultStatus.values(), AssignmentStatus.values())
+                .flatMap(Stream::of)
+                .filter(activityStatus -> activityStatus.getStatus().equals(s))
+                .findAny()
+                .orElseThrow(() -> new NotExistsActivityStatusException(s));
+    }
+}

src/main/java/com/stumeet/server/activity/adapter/out/model/ActivityImageJpaEntity.java

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+package com.stumeet.server.activity.adapter.out.model;
+
+import jakarta.persistence.*;
+import lombok.*;
+import org.hibernate.annotations.Comment;
+
+@Entity
+@Table(name = "activity_image")
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
+@Builder
+@Getter
+public class ActivityImageJpaEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Comment("활동 이미지 id")
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "activity_id")
+    @Comment("활동")
+    private ActivityJpaEntity activity;
+
+    @Column(name = "url", nullable = false, length = 500)
+    @Comment("이미지 url")
+    private String image;
+}

src/main/java/com/stumeet/server/activity/adapter/out/model/ActivityJpaEntity.java

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+package com.stumeet.server.activity.adapter.out.model;
+import com.stumeet.server.activity.domain.model.ActivityCategory;
+import com.stumeet.server.common.model.BaseTimeEntity;
+import jakarta.persistence.*;
+import lombok.*;
+import org.hibernate.annotations.Comment;
+
+import java.time.LocalDateTime;
+
+@Entity
+@Table(name = "activity")
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
+@Builder
+@Getter
+public class ActivityJpaEntity extends BaseTimeEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Comment("활동 id")
+    private Long id;
+
+    @ManyToOne
+    @JoinColumn(name = "study_id")
+    @Comment("연관된 스터디")
+    private ActivityLinkedStudyJpaEntity study;
+
+    @OneToOne
+    @JoinColumn(name = "member_id")
+    @Comment("연관된 멤버")
+    private ActivityMemberJpaEntity member;
+
+    @Column(name = "category", nullable = false)
+    @Enumerated(EnumType.STRING)
+    @Comment("활동 카테고리")
+    private ActivityCategory category;
+
+    @Column(name = "title", nullable = false)
+    @Comment("활동 제목")
+    private String title;
+
+    @Column(name = "content", nullable = false, length = 500)
+    @Comment("활동 내용")
+    private String content;
+
+    @Column(name = "is_notice", nullable = false)
+    @Comment("공지 여부")
+    private boolean isNotice;
+
+    @Column(name = "start_date", nullable = false)
+    @Comment("활동 시작 날짜")
+    private LocalDateTime startDate;
+
+    @Column(name = "end_date", nullable = false)
+    @Comment("활동 종료 날짜")
+    private LocalDateTime endDate;
+
+}

src/main/java/com/stumeet/server/activity/adapter/out/model/ActivityLinkedStudyJpaEntity.java

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+package com.stumeet.server.activity.adapter.out.model;
+
+import jakarta.persistence.*;
+import lombok.*;
+import org.hibernate.annotations.Comment;
+
+@Entity
+@Table(name = "study")
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
+@Builder
+@Getter
+public class ActivityLinkedStudyJpaEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Comment("스터디 id")
+    private Long id;
+
+}

src/main/java/com/stumeet/server/activity/adapter/out/model/ActivityMemberJpaEntity.java

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+package com.stumeet.server.activity.adapter.out.model;
+
+import jakarta.persistence.*;
+import lombok.*;
+import org.hibernate.annotations.Comment;
+
+@Entity
+@Table(name = "member")
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
+@Builder
+@Getter
+public class ActivityMemberJpaEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Comment("활동 멤버 id")
+    private Long id;
+
+    @Column(name = "name", nullable = false)
+    @Comment("멤버 이름")
+    private String name;
+
+    @Column(name = "image", nullable = false)
+    @Comment("멤버 이미지")
+    private String image;
+}

src/main/java/com/stumeet/server/activity/adapter/out/model/ActivityParticipantJpaEntity.java

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+package com.stumeet.server.activity.adapter.out.model;
+
+import com.stumeet.server.activity.adapter.out.mapper.ActivityStatusConverter;
+import com.stumeet.server.activity.domain.model.ActivityStatus;
+import jakarta.persistence.*;
+import lombok.*;
+import org.hibernate.annotations.Comment;
+
+@Entity
+@Table(name = "activity_participant")
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
+@Builder
+@Getter
+public class ActivityParticipantJpaEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Comment("활동 참여자 id")
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "activity_id")
+    @Comment("참여하는 활동")
+    private ActivityJpaEntity activity;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "member_id")
+    @Comment("참여하는 멤버")
+    private ActivityMemberJpaEntity member;
+
+    @Convert(converter = ActivityStatusConverter.class)
+    @Comment("활동 참여자 상태")
+    private ActivityStatus status;
+}