Enable VPAX extraction on non-Windows platforms (#126)

* Remove `windows` platform target

* Use DbConnectionStringBuilder instead of OleDb

* Remove `System.Data.OleDb` package reference

* Fix build error

Author: albertospelta

src/Dax.Model.Extractor/Data/ConnectionStringUtils.cs

@@ -0,0 +1,46 @@
+using System;
+using System.Data.Common;
+using System.Globalization;
+
+namespace Dax.Model.Extractor.Data
+{
+    public static class ConnectionStringUtils
+    {
+        public static string GetDataSource(string connectionString) => GetValue(connectionString, ConnectionStringKeywords.DataSource);
+
+        public static string GetInitialCatalog(string connectionString) => GetValue(connectionString, ConnectionStringKeywords.InitialCatalog);
+
+        public static string GetConnectionString(string serverNameOrConnectionString, string databaseName)
+        {
+            var builder = new DbConnectionStringBuilder(useOdbcRules: false);
+            try {
+                builder.ConnectionString = serverNameOrConnectionString;
+            }
+            catch {
+                // Assume servername
+                builder[ConnectionStringKeywords.Provider] = "MSOLAP";
+                builder[ConnectionStringKeywords.DataSource] = serverNameOrConnectionString;
+            }
+            builder[ConnectionStringKeywords.InitialCatalog] = databaseName;
+            return builder.ConnectionString;
+        }
+
+        private static string GetValue(string connectionString, string keyword)
+        {
+            var builder = new DbConnectionStringBuilder(useOdbcRules: false);
+            builder.ConnectionString = connectionString;
+
+            if (builder.TryGetValue(keyword, out object value))
+                return ((IConvertible)value).ToString(CultureInfo.InvariantCulture);
+
+            return string.Empty; // default to empty string to keep the result consistent with the OleDbConnectionStringBuilder
+        }
+    }
+
+    internal static class ConnectionStringKeywords
+    {
+        public const string Provider = "Provider";
+        public const string DataSource = "Data Source";
+        public const string InitialCatalog = "Initial Catalog";
+    }
+}

src/Dax.Model.Extractor/Data/IDbConnectionExtensions.cs

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net462;netcoreapp3.1;net6.0-windows</TargetFrameworks>
+    <TargetFrameworks>net462;netcoreapp3.1;net6.0</TargetFrameworks>
     <IsPackable>true</IsPackable>
   </PropertyGroup>
 
@@ -22,13 +22,12 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.SourceLink.GitHub" PrivateAssets="All" />
-    <PackageReference Include="System.Data.OleDb" />
   </ItemGroup>
   <ItemGroup Condition="'$(TargetFramework)' == 'net462'">
     <PackageReference Include="Microsoft.AnalysisServices.retail.amd64" />
     <PackageReference Include="Microsoft.AnalysisServices.AdomdClient.retail.amd64" />
   </ItemGroup>
-  <ItemGroup Condition="'$(TargetFramework)' == 'netcoreapp3.1' OR '$(TargetFramework)' == 'net6.0-windows'">
+  <ItemGroup Condition="'$(TargetFramework)' == 'netcoreapp3.1' OR '$(TargetFramework)' == 'net6.0'">
     <PackageReference Include="Microsoft.AnalysisServices.NetCore.retail.amd64" />
     <PackageReference Include="Microsoft.AnalysisServices.AdomdClient.NetCore.retail.amd64" />
   </ItemGroup>

src/Dax.Model.Extractor/Dax.Model.Extractor.csproj

@@ -34,7 +34,9 @@ public class DmvExtractor
 
         protected IDbCommand CreateCommand(string commandText)
         {
-            return Connection.CreateCommand(commandText);
+            var command = Connection.CreateCommand();
+            command.CommandText = commandText;
+            return command;
         }
 
         public DmvExtractor(Dax.Metadata.Model daxModel, IDbConnection connection, string serverName, string databaseName, string extractorApp, string extractorVersion)

src/Dax.Model.Extractor/DmvExtractor.cs

@@ -19,7 +19,9 @@ private StatExtractor(Dax.Metadata.Model daxModel, IDbConnection connection)
 
         protected IDbCommand CreateCommand(string commandText)
         {
-            return Connection.CreateCommand(commandText);
+            var command = Connection.CreateCommand();
+            command.CommandText = commandText;
+            return command;
         }
 
         // UpdateStatisticsModel has been marked as obsolete because its usage may require rerunning the DMVs for models with DirectLake partitions. Since this logic should be handled by the library, we may consider removing it from the public APIs in a future release.

src/Dax.Model.Extractor/StatExtractor.cs

@@ -1,7 +1,10 @@
 using Dax.Metadata;
+using Dax.Model.Extractor.Data;
 using Microsoft.AnalysisServices.AdomdClient;
+using Newtonsoft.Json.Linq;
 using System;
-using System.Data.OleDb;
+using System.Data.Common;
+using System.Globalization;
 using System.Linq;
 using Tom = Microsoft.AnalysisServices.Tabular;
 
@@ -288,7 +291,7 @@ public static Dax.Metadata.Model GetDaxModel(string connectionString, string app
             var database = GetDatabase(connectionString);
             Tom.Model tomModel = database.Model;
             string databaseName = database.Name;
-            string serverName = GetDataSource(connectionString);
+            string serverName = ConnectionStringUtils.GetDataSource(connectionString);
 
             var daxModel = TomExtractor.GetDaxModel(tomModel, applicationName, applicationVersion);
 
@@ -312,18 +315,6 @@ public static Dax.Metadata.Model GetDaxModel(string connectionString, string app
             return daxModel;
         }
 
-        private static string GetDataSource(string connectionString)
-        {
-            var builder = new OleDbConnectionStringBuilder(connectionString);
-            return builder.DataSource;
-        }
-
-        private static string GetInitialCatalog(string connectionString)
-        {
-            var builder = new OleDbConnectionStringBuilder(connectionString);
-            builder.TryGetValue("Initial Catalog", out object initialCatalog);
-            return initialCatalog.ToString();
-        }
         public static Tom.Database GetDatabase(string serverName, string databaseName)
         {
             Tom.Server server = new();
@@ -337,7 +328,7 @@ public static Tom.Database GetDatabase(string connectionString)
         {
             Tom.Server server = new();
             server.Connect(connectionString);
-            var databaseName = GetInitialCatalog(connectionString);
+            var databaseName = ConnectionStringUtils.GetInitialCatalog(connectionString);
             Tom.Database db = server.Databases.FindByName(databaseName);
             // if db is null either it does not exist or we do not have admin rights to it
             return db ?? throw new ArgumentException($"The database '{databaseName}' could not be found. Either it does not exist or you do not have admin rights to it.");
@@ -350,7 +341,7 @@ public static Dax.Metadata.Model GetDaxModel(string serverName, string databaseN
 
             var daxModel = TomExtractor.GetDaxModel(tomModel, applicationName, applicationVersion);
 
-            string connectionString = GetConnectionString(serverName, databaseName);
+            string connectionString = ConnectionStringUtils.GetConnectionString(serverName, databaseName);
 
             using (AdomdConnection connection = new(connectionString))
             {
@@ -371,22 +362,5 @@ public static Dax.Metadata.Model GetDaxModel(string serverName, string databaseN
             }
             return daxModel;
         }
-
-        private static string GetConnectionString(string dataSourceOrConnectionString, string databaseName)
-        {
-            OleDbConnectionStringBuilder csb = new();
-            try
-            {
-                csb.ConnectionString = dataSourceOrConnectionString;
-            }
-            catch
-            {
-                // Assume servername
-                csb.Provider = "MSOLAP";
-                csb.DataSource = dataSourceOrConnectionString;
-            }
-            csb["Initial Catalog"] = databaseName;
-            return csb.ConnectionString;
-        }
     }
 }

src/Dax.Model.Extractor/TomExtractor.cs

@@ -1,5 +1,5 @@
 using System.CommandLine;
-using System.Data.OleDb;
+using System.Data.Common;
 
 namespace Dax.Vpax.CLI.Commands;
 
@@ -11,12 +11,14 @@ internal static class ExportCommandOptions
         parse: (result) =>
         {
             var connectionString = result.Tokens.Single().Value;
-
-            var builder = new OleDbConnectionStringBuilder(connectionString);
-            if (!builder.ContainsKey("Initial Catalog"))
-                result.ErrorMessage = "The connection string does not contain the 'Initial Catalog' property.";
-
-            return connectionString;
+            {
+                var builder = new DbConnectionStringBuilder(useOdbcRules: false);
+                builder.ConnectionString = connectionString;
+
+                if (!builder.ContainsKey("Initial Catalog"))
+                    result.ErrorMessage = "The connection string does not contain the 'Initial Catalog' property.";
+            }
+            return connectionString; // always return the original value
         });
 
     public static readonly Argument<string> PathArgument = new(

src/Dax.Vpax.CLI/Commands/ExportCommandOptions.cs

@@ -12,7 +12,6 @@
     <PackageVersion Include="Microsoft.AnalysisServices.AdomdClient.NetCore.retail.amd64" Version="$(MicrosoftAnalysisServicesVersion)" />
     <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="1.1.1" />
     <PackageVersion Include="Newtonsoft.Json" Version="13.0.3" />
-    <PackageVersion Include="System.Data.OleDb" Version="6.0.0" />
     <PackageVersion Include="System.IO.Packaging" Version="6.0.0" />
     <PackageVersion Include="coverlet.collector" Version="6.0.0" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />

src/Directory.Packages.props

@@ -60,17 +60,17 @@ public static Dax.Metadata.Model GetDaxModel(string serverName, string databaseN
                 server.Connect(serverName);
                 Microsoft.AnalysisServices.Database db = server.Databases[databaseName];
                 Microsoft.AnalysisServices.Tabular.Model tomModel = db.Model;
-                var daxModel = Dax.Metadata.Extractor.TomExtractor.GetDaxModel(tomModel, "TestDaxModel", "0.1");
+                var daxModel = Dax.Model.Extractor.TomExtractor.GetDaxModel(tomModel, "TestDaxModel", "0.1");
 
                 var connectionString = GetConnectionString(serverName, databaseName);
 
                 using (var connection = new AdomdConnection(connectionString)) {
                     // Populate statistics from DMV
-                    Dax.Metadata.Extractor.DmvExtractor.PopulateFromDmv(daxModel, connection, serverName, databaseName, "TestDaxModel", "0.1");
+                    Dax.Model.Extractor.DmvExtractor.PopulateFromDmv(daxModel, connection, serverName, databaseName, "TestDaxModel", "0.1");
 
                     // Populate statistics by querying the data model
                     if (readStatisticsFromData) {
-                        Dax.Metadata.Extractor.StatExtractor.UpdateStatisticsModel(daxModel, connection, 10);
+                        Dax.Model.Extractor.StatExtractor.UpdateStatisticsModel(daxModel, connection, 10);
                     }
                 }
                 return daxModel;

utils/TestDaxWpf/MainWindow.xaml.cs

@@ -221,7 +221,7 @@ private void TestPbiShared(string name, string id)
             //Console.WriteLine("Connection open");
 
             Dax.Metadata.Model m = new Dax.Metadata.Model();
-            Dax.Metadata.Extractor.DmvExtractor.PopulateFromDmv(m, conn, serverName, databaseName, "Test", "0.1");
+            Dax.Model.Extractor.DmvExtractor.PopulateFromDmv(m, conn, serverName, databaseName, "Test", "0.1");
 
             Dax.Vpax.Tools.VpaxTools.ExportVpax(@"c:\temp\" + name + ".vpax",m);
         }

utils/TestPowerBI/Form1.cs

@@ -322,8 +322,8 @@ private Dax.ViewModel.VpaModel GetVpaModel(string groupName, string datasetName,
             Dax.Metadata.Model m = new Dax.Metadata.Model();
             // NOTE: groupName is the serverName in the arguments
             //       datasetName is the databaseName in the arguments
-            Dax.Metadata.Extractor.DmvExtractor.PopulateFromDmv(m, conn, groupName, datasetName, "Test", "0.1");
-            Dax.Metadata.Extractor.StatExtractor.UpdateStatisticsModel(m, conn, 4);
+            Dax.Model.Extractor.DmvExtractor.PopulateFromDmv(m, conn, groupName, datasetName, "Test", "0.1");
+            Dax.Model.Extractor.StatExtractor.UpdateStatisticsModel(m, conn, 4);
             return new Dax.ViewModel.VpaModel(m);
         }