> Yes, but this will not work with DllImport. It accepts only constant
> string as param. And using LoadLibrary will work only on Windows, so for
> Linux/Mono it will be out.
>
> BTW if the DLL is in standard dirs there's no problem with loading,
> isn't it?
The problems are in FirebirdSql.Data.Client.Embedded:
#if (LINUX)
#if (FBCLIENT)
public const string DllPath = "libfbclient";
#elif (GDS32)
public const string DllPath = "libgds";
#elif (VULCAN)
public const string DllPath = "libfirebird32";
#elif (FYRACLE)
public const string DllPath = "fyracle";
#else
public const string DllPath = "libfbembed";
#endif
#else
#if (FBCLIENT)
public const string DllPath = "fbclient";
#elif (GDS32)
public const string DllPath = "gds32";
#elif (VULCAN)
public const string DllPath = "firebird32";
#elif (FYRACLE)
public const string DllPath = "fyracle";
#else
public const string DllPath = "fbembed";
#endif
#endif
I do not want to recompile provider for using it with fbclient.dll
instead of fbembed.dll.
So i looked into sources and what do you think about next changes:
1) Make interface FirebirdSql.Data.Client.Embedded.IFbClient with same
methods as in current IFbClient
2) Make concreate implementations of IFbClient, for example:
[SuppressUnmanagedCodeSecurity]
internal sealed class FbClientWinEmbedded : IFbClient
{
[DllImport("fbembed")]
public static extern int isc_array_get_slice(
[In, Out] int[] statusVector,
ref int dbHandle,
ref int trHandle,
ref long arrayId,
IntPtr desc,
byte[] destArray,
ref int sliceLength);
int IFbClient.isc_array_get_slice(
[In, Out] int[] statusVector,
ref int dbHandle,
ref int trHandle,
ref long arrayId,
IntPtr desc,
byte[] destArray,
ref int sliceLength);
{
return isc_array_get_slice(
statusVector,
ref dbHandle,
ref trHandle,
ref arrayId,
desc,
destArray,
ref sliceLength);
}
3) Make new class like FbClientFactory:
namespace FirebirdSql.Data.Client.Embedded
{
internal static class FbClientFactory
{
private static Dictionary<string, IFbClient> fbClients =
new Dictionary<string, IFbClient>();
static FbClientFactory()
{
fbClients.Add("WinEmbed".ToLower(), new
FbClientWinEmbedded());
// so on ...
}
internal static IFbClient GetFbClientByName(string clientName)
{
return fbClients[clientName.ToLower()];
}
}
}
4) Add field and parameter to class constructors, for example:
public FesDatabase(string clientName)
{
//...
this.clientName = clientName;
}
5) Replace all current calls of FbClient.xxx on
FbClientFactory.GetFbClientByName(clientName).xxx
What do you think? I can try to implement this.
Which way is better, Dean's or myne?
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