[MSSQL] Fix loading of layers in browser and dialog.

Add ODBC connection pooling

Author: NathanW2

src/providers/mssql/qgsmssqldataitems.cpp

@@ -109,24 +109,7 @@ QVector<QgsDataItem*> QgsMssqlConnectionItem::createChildren()
     return children;
   }
 
-  QString connectionName;
-  if ( mService.isEmpty() )
-  {
-    if ( mHost.isEmpty() )
-    {
-      children.append( new QgsErrorItem( this, "QgsMssqlProvider host name not specified", mPath + "/error" ) );
-      return children;
-    }
-
-    if ( mDatabase.isEmpty() )
-    {
-      children.append( new QgsErrorItem( this, "QgsMssqlProvider database name not specified", mPath + "/error" ) );
-      return children;
-    }
-    connectionName = mHost + "." + mDatabase;
-  }
-  else
-    connectionName = mService;
+  QString connectionName = db.connectionName();
 
   QgsMssqlGeomColumnTypeThread *columnTypeThread = 0;
 

src/providers/mssql/qgsmssqlprovider.cpp

@@ -87,6 +87,7 @@ QgsMssqlProvider::QgsMssqlProvider( QString uri )
   if ( !OpenDatabase( mDatabase ) )
   {
     setLastError( mDatabase.lastError( ).text( ) );
+    QgsDebugMsg( mLastError );
     mValid = false;
     return;
   }
@@ -225,7 +226,10 @@ QSqlDatabase QgsMssqlProvider::GetDatabase( QString service, QString host, QStri
     connectionName = service;
 
   if ( !QSqlDatabase::contains( connectionName ) )
+  {
     db = QSqlDatabase::addDatabase( "QODBC", connectionName );
+    db.setConnectOptions("SQL_ATTR_CONNECTION_POOLING=SQL_CP_ONE_PER_HENV");
+  }
   else
     db = QSqlDatabase::database( connectionName );
 
@@ -263,6 +267,7 @@ QSqlDatabase QgsMssqlProvider::GetDatabase( QString service, QString host, QStri
     db.setPassword( password );
 
   db.setDatabaseName( connectionString );
+  QgsDebugMsg( connectionString );
   return db;
 }
 

src/providers/mssql/qgsmssqlsourceselect.cpp

@@ -497,7 +497,7 @@ void QgsMssqlSourceSelect::on_btnConnect_clicked()
 
   mConnInfo =  "dbname='" + database + "'";
   if ( !host.isEmpty() )
-    mConnInfo += " host=" + host + "'";
+    mConnInfo += " host='" + host + "'";
   if ( !username.isEmpty() )
     mConnInfo += " user='" + username + "'";
   if ( !password.isEmpty() )
@@ -516,27 +516,7 @@ void QgsMssqlSourceSelect::on_btnConnect_clicked()
     return;
   }
 
-  QString connectionName;
-  if ( service.isEmpty() )
-  {
-    if ( host.isEmpty() )
-    {
-      QMessageBox::warning( this,
-                            tr( "MSSQL Provider" ), "QgsMssqlProvider host name not specified" );
-      return;
-    }
-
-    if ( database.isEmpty() )
-    {
-      QMessageBox::warning( this,
-                            tr( "MSSQL Provider" ), "QgsMssqlProvider database name not specified" );
-      return;
-    }
-    connectionName = host + "." + database;
-  }
-  else
-    connectionName = service;
-
+  QString connectionName = db.connectionName();
 
   // Read supported layers from database
   QApplication::setOverrideCursor( Qt::WaitCursor );
@@ -784,6 +764,13 @@ void QgsMssqlGeomColumnTypeThread::run()
 
       // issue the sql query
       QSqlDatabase db = QSqlDatabase::database( mConnectionName );
+      if ( !QgsMssqlProvider::OpenDatabase( db ) )
+      {
+        QString msg = db.lastError().text();
+        QgsDebugMsg( msg );
+        continue;
+      }
+
       QSqlQuery q = QSqlQuery( db );
       q.setForwardOnly( true );
       if ( !q.exec( query ) )