feat: add zoo sample

src/main/java/com/kamco/cd/kamcoback/postgres/entity/ZooEntity.java

@@ -0,0 +1,66 @@
+package com.kamco.cd.kamcoback.postgres.entity;
+
+import com.kamco.cd.kamcoback.postgres.CommonDateEntity;
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.Table;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.UUID;
+import lombok.AccessLevel;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@Table(name = "tb_zoo")
+public class ZooEntity extends CommonDateEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long uid;
+
+    @Column(unique = true, nullable = false)
+    private UUID uuid;
+
+    @Column(nullable = false, length = 200)
+    private String name;
+
+    @Column(length = 300)
+    private String location;
+
+    @Column(columnDefinition = "TEXT")
+    private String description;
+
+    @Column(nullable = false)
+    private Boolean isDeleted;
+
+    @OneToMany(mappedBy = "zoo", fetch = FetchType.LAZY, cascade = CascadeType.ALL)
+    private List<AnimalEntity> animals = new ArrayList<>();
+
+    // Constructor
+    public ZooEntity(String name, String location, String description) {
+        this.uuid = UUID.randomUUID();
+        this.name = name;
+        this.location = location;
+        this.description = description;
+        this.isDeleted = false;
+    }
+
+    // 논리 삭제
+    public void deleted() {
+        this.isDeleted = true;
+    }
+
+    // 현재 활성 동물 개수 조회 (삭제되지 않은 동물만)
+    public long getActiveAnimalCount() {
+        return animals.stream().filter(animal -> !animal.getIsDeleted()).count();
+    }
+}