[API] Let web music list read from database

src/main/java/icu/samnyan/aqua/sega/diva/dao/gamedata/DivaPvRepository.java

@@ -0,0 +1,10 @@
+package icu.samnyan.aqua.sega.diva.dao.gamedata;
+
+import icu.samnyan.aqua.sega.diva.model.gamedata.Pv;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+/**
+ * @author  samnyan (privateamusement@protonmail.com)
+ */
+public interface DivaPvRepository extends JpaRepository<Pv, Integer> {
+}

src/main/java/icu/samnyan/aqua/sega/diva/model/gamedata/Difficulty.java

@@ -0,0 +1,36 @@
+package icu.samnyan.aqua.sega.diva.model.gamedata;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.*;
+
+/**
+ * @author  samnyan (privateamusement@protonmail.com)
+ */
+@Entity(name = "DivaPvLevel")
+@Table(name = "diva_pv_info_level")
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class Difficulty {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @JsonIgnore
+    private long id;
+
+    @JsonIgnore
+    @ManyToOne
+    @JoinColumn(name = "pv_id")
+    private Pv pv;
+
+    private int edition;
+
+    private String level;
+
+    private int version;
+
+    private String diff;
+}

src/main/java/icu/samnyan/aqua/sega/diva/model/gamedata/Pv.java

@@ -0,0 +1,45 @@
+package icu.samnyan.aqua.sega.diva.model.gamedata;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.*;
+import java.io.Serializable;
+import java.util.Map;
+
+/**
+ * @author  samnyan (privateamusement@protonmail.com)
+ */
+@Entity(name = "DivaPvInfo")
+@Table(name = "diva_pv_info")
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class Pv implements Serializable
+{
+    private static final long serialVersionUID = 1L;
+
+    @Id
+    private Integer pvId;
+
+    private Integer bpm;
+
+    private String songName;
+
+    private String songNameEng;
+
+    private String songNameReading;
+
+    private String arranger;
+
+    private String lyrics;
+
+    private String music;
+
+    private Integer performerNumber;
+
+    @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy = "pv")
+    @MapKey(name = "diff")
+    private Map<String, Difficulty> difficulty;
+}