我创建了一个服务数据访问层,其中有多个数据库需要数据来源。
我在一个数据库中做得很好,我在其中定义了包含成员详细信息的memberRepository
。但是,现在我必须获取存储在另一个数据库中的与会话相关的详细信息。
OprationContracts:
IMemberServices
包含GetLoggedInBuddies(int profileID);
ISessionServices
包含GetProfileIDFromSessionID(string sessionID);
我的服务类:
public class MemberService : IMemberService, ISessionServices
{
#region Strategy pattern configuration
//
// Member repo
//
private MemberRepository memberRepository;
public MemberService()
: this(new MemberRepository())
{ }
public MemberService(MemberRepository memberRepository)
{
this.memberRepository = memberRepository;
}
//
// Session repo
//
private SessionRepository sessionRepository;
public MemberService() : this(new SessionRepository()){}
public MemberService(SessionRepository sessionRepository)
{
this.sessionRepository = sessionRepository;
}
#endregion
/// <summary>
/// Session-related details are maintained in the Secondary database
/// </summary>
/// <param name="sessionID"></param>
/// <returns></returns>
public int GetProfileIDFromSessionID(string sessionID)
{
int sessionProfileID = sessionRepository.GetProfileDetailsFromSessionID(sessionRepository);
return sessionProfileID;
}
/// <summary>
/// Try profileID = 1150526
/// </summary>
/// <param name="profileID"></param>
public void GetLoggedInBuddies(int profileID)
{
memberRepository.GetLoggedInBuddies(profileID);
//return memberRepository.GetLoggedInBuddies(profileID);
}
问题在于// Session Repo
部分,因为我已经定义了构造函数。我知道了。
所以基本上在每种方法中我都想做一些像
这样的事情MemberService useSessionRepo = new MemberService(SessionRepository);
useSessionRepo.GetProfileDetailsFromSessionID(...);
MemberService useMemberRepo = new MemberService(MemberRepository);
useMemberRepo.GetLoggedInBuddies(...);
只需要把它放在一起。
感谢。
答案 0 :(得分:0)
我不确定你的问题,但是你可以使用没有param的ctor,以及每个repo的param。
public MemberService()
{
this.memberRepository = new MemberRepository();
this.sessionRepository = new SessionRepository();
}
答案 1 :(得分:0)
我创建了一个中央存储库,它接受我要连接的数据库的连接字符串的名称。
public abstract class DatabaseRepository : BaseRepository
{
static IDbConnection connection;
/// <summary>
/// Handles db connectivity as Dapper assumes an existing connection for all functions
/// Since this app uses three databases, pass in the connection string for the required db.
/// </summary>
/// <returns></returns>
protected static IDbConnection OpenConnection(string connectionStringName)
{
try
{
connection = new SqlConnection(WebConfigurationManager.ConnectionStrings[connectionStringName].ConnectionString);
//connection = SqlMapperUtil.GetOpenConnection(connectionStringName); // if we want to use the Dapper utility methods
connection.Open();
return connection;
}
catch (Exception ex)
{
ErrorLogging.Instance.Fatal(ex); // uses singleton for logging
return null;
}
}
.
.
.
然后在我的服务库中,我建立了与相应数据库的连接并执行我需要的任何查询:
using (IDbConnection connection = OpenConnection("FirstDBConnectionString")) { ...