# WriteToDatabase

VTKExamples/Cxx/Databases/SQL/MySQL/WriteToDatabase

### Code

WriteToDatabase.cxx

    #include <vtkSmartPointer.h>
    #include <vtkMySQLDatabase.h>
    #include <vtkSQLQuery.h>
    #include <vtkVariant.h>

    int main(int, char *[])
    {
      // url syntax:
      // mysql://'[[username[':'password]'@']hostname[':'port]]'/'[dbname]

      vtkSmartPointer<vtkMySQLDatabase> db =
        vtkSmartPointer<vtkMySQLDatabase>::Take(vtkMySQLDatabase::SafeDownCast(
                vtkSQLDatabase::CreateFromURL( "mysql://root@localhost/TestDatabase" ) ));

      bool status = db->Open();

      std::cout << "Database open? " << status << std::endl;

      if(!status)
      {
        return EXIT_FAILURE;
      }

      vtkSmartPointer<vtkSQLQuery> query =
        vtkSmartPointer<vtkSQLQuery>::Take(db->GetQueryInstance());

      std::string createQuery( "INSERT INTO TestTable (PointId) VALUES(8)");
      std::cout << createQuery << std::endl;
      query->SetQuery( createQuery.c_str() );
      query->Execute();

      return EXIT_SUCCESS;
    }

### CMakeLists.txt

    cmake_minimum_required(VERSION 2.8)

    PROJECT(WriteToDatabase)

    find_package(VTK REQUIRED)
    include(${VTK_USE_FILE})

    add_executable(WriteToDatabase MACOSX_BUNDLE WriteToDatabase.cxx )

    target_link_libraries(WriteToDatabase ${VTK_LIBRARIES})

### Download and Build WriteToDatabase

Click here to download WriteToDatabase and its CMakeLists.txt file. Once the tarball WriteToDatabase.tar has been downloaded and extracted,

    cd WriteToDatabase/build

If VTK is installed:

    cmake ..

If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:

    cmake -DVTK_DIR:PATH=/home/me/vtk_build ..

Build the project:

    make

and run it:

    ./WriteToDatabase

WINDOWS USERS

Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.