Incorrect dwsLinqSql.LinqSqlFactory declaration

[Maksim Abramovich]

"compiler: IdwsCompiler" is required (interface) but "compiler: TdwsCompiler" found (class)

I assume TdwsCompiler (class) type should be replaced with IdwsCompiler (interface) type all over the unit but below fix may work as well.

function LinqSqlFactory(compiler: IdwsCompiler; symbol: TTypeSymbol): ILinqQueryBuilder;
var
   factory: TLinqSqlFactory;
begin
   factory := TLinqSqlFactory.Create(compiler.Compiler);
   if symbol.IsCompatible(factory.FDatabaseSymbol) then
      result := factory
   else begin
      result := nil;
      factory.Free;
   end;
end;

[DreddFoxx1]

I can confirm that this is working:

-FCompiler: TdwsCompiler;
+FCompiler: IdwsCompiler;

-constructor Create(compiler: TdwsCompiler);
+constructor Create(compiler: IdwsCompiler);

-constructor TLinqSqlFactory.Create(compiler: TdwsCompiler);
+constructor TLinqSqlFactory.Create(compiler: IdwsCompiler);

procedure TLinqSqlFactory.Finalize(From: TTypedExpr);
begin
-TSqlFromExpr(from).Codegen(FCompiler);
+TSqlFromExpr(from).Codegen(FCompiler.Compiler);
end;


-function LinqSqlFactory(compiler: TdwsCompiler; symbol: TTypeSymbol): ILinqQueryBuilder;
+function LinqSqlFactory(compiler: IdwsCompiler; symbol: TTypeSymbol): ILinqQueryBuilder;

[Eric Grange]

Linq units compile, but are not maintained at the moment beyond compilation