Does this simplification match what you wanted i.e. provider
assembly should be loaded in prior?
Atsushi Eno
Atsushi Eno wrote:
> Hello,
>
> Regardless of whether current implementation strategy is to change
> or not, Dynamic type loading will also happen for loading DB
> provider assemblies (e.g. System.Data.SQLite.dll), like currently
> DbLinq.Vendor.Implementation.Vendor.CreateDbConnection() does.
>
> To not load assembly dynamically, you will have to add dependencies
> onto all DB providers, which you don't want (unless I miss some
> other possibilities).
>
> Atsushi Eno
>
> Pascal Craponne wrote:
>> Hi guys,
>>
>> I took a quick look at the code, and I definitely think that it is not
>> DbLinq's responsibility to directly load the required assembly.
>> The application know what vendors it will use, is then its own
>> responsibility.
>> To me, identifiers given in the connection string MUST just allow to
>> find an IVendor implementation that is already loaded.
>> Maybe, for DbLinq in extended mode, we may consider later to use an
>> extension to dynamically load the assembly, but this is not the first
>> priority.
>>
>> The code currently in SVN show that dynamically loading assemblies is a
>> complex task that is far beyond the DataContext's scope.
>>
>> Pascal.
>
>
> >
>
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Index: src/DbLinq/Vendor/Implementation/Vendor.cs
===================================================================
--- src/DbLinq/Vendor/Implementation/Vendor.cs (revision 931)
+++ src/DbLinq/Vendor/Implementation/Vendor.cs (working copy)
@@ -110,6 +110,19 @@
{
TypeToLoadData typeToLoad = GetProviderTypeName();
string assemblyToLoad = typeToLoad.assemblyName; //e.g.
"System.Data.SQLite.DLL",
+
+ Type type = null;
+ foreach (var assy in AppDomain.CurrentDomain.GetAssemblies())
+ if (String.Compare (assy.GetName().Name + ".dll",
assemblyToLoad, StringComparison.OrdinalIgnoreCase) == 0)
+ foreach (Type t in assy.GetTypes ())
+ if (t.Name == typeToLoad.className) {
+ type = t;
+ break;
+ }
+ if (type == null)
+ throw new ArgumentException ("Assembly " + assemblyToLoad + " or
type " + typeToLoad.className + " is not found");
+ return Activator.CreateInstance(type, new object[] {
connectionString }) as IDbConnection;
+/*
Assembly assy;
try
{
@@ -156,6 +169,7 @@
}
IDbConnection iDbConn = (IDbConnection)iDbConnObject;
return iDbConn;
+*/
}
public class TypeToLoadData
