子类集合转父类结合：

@Override

    public ArrayList<UserInfo> getOwnedUserList(Account account) {

        AccountTypeEnum accountType = AccountTypeEnum.getEnum(value));

       // 父类集合

        ArrayList<UserInfo> ownedUserList = new ArrayList<>();

        switch (accountType) {

            case Sup:

                //子类集合

                ArrayList<Account> tempUserList = getAccountListByParentId(account.getId());

                // 子类集合转父类结合

                ownedUserList.addAll(tempUserList);

                break;

            case HC:

                P p = pService.getPByAccountId(account.getId());

               default:

                break;

        }

        return ownedUserList;

    }

1. ExtUser

@Data

@Builder

@AllArgsConstructor

@NoArgsConstructor

public class ExtUser extends Account {

    public Long pCount;

}

2. Account

@TableName("account")

@Data

public class Account extends UserInfo implements Serializable {

    private static final long serialVersionUID = 1L;

    private String password;

    private Integer deleteFlag;

}

3. UserInfo

@Data

public class UserInfo implements Serializable {

    private static final long serialVersionUID = 1L;

    @TableId(value = "id", type = IdType.AUTO)

    private Integer id;

    private String username;

}