ENH: Initialized empty $/mvd2/db.sqlite database file.

Code/Common/Core/CMakeLists.txt

@@ -42,7 +42,7 @@ set( Common_Core_HEADERS_MOC
   mvdBackgroundTask.h
   # mvdCore.h
   mvdDatabaseConnection.h
-  mvdDatabaseError.h
+  # mvdDatabaseError.h
   mvdDatabaseModel.h
   mvdDatasetDescriptor.h
   mvdDatasetModel.h

Code/Common/Core/mvdDatabaseConnection.cxx

@@ -25,6 +25,7 @@
 //
 // Qt includes (sorted by alphabetic order)
 //// Must be included before system/custom includes.
+#include <QtSql>
 
 //
 // System includes (sorted by alphabetic order)
@@ -37,6 +38,8 @@
 
 //
 // Monteverdi includes (sorted by alphabetic order)
+#include "Core/mvdDatabaseError.h"
+#include "Core/mvdI18nCoreApplication.h"
 
 namespace mvd
 {
@@ -77,6 +80,23 @@ DatabaseConnection
 {
 }
 
+/*******************************************************************************/
+void
+DatabaseConnection
+::Foo()
+{
+  QSqlDatabase db( QSqlDatabase::addDatabase( "QSQLITE", "mvd2" ) );
+
+  QString filename(
+    I18nCoreApplication::ConstInstance()->GetCacheDir().filePath( "db.sqlite" )
+  );
+
+  db.setDatabaseName( filename );
+
+  if( !db.open() )
+    throw DatabaseError( db.lastError() );
+}
+
 /*******************************************************************************/
 /* SLOTS                                                                       */
 /*******************************************************************************/

Code/Common/Core/mvdDatabaseConnection.h

@@ -89,6 +89,10 @@ public:
   /** \brief Destructor. */
   virtual ~DatabaseConnection();
 
+  /**
+   */
+  static void Foo();
+
   /*-[ PUBLIC SLOTS SECTION ]------------------------------------------------*/
 
 //

Code/Common/Core/mvdDatabaseError.cxx

@@ -28,6 +28,7 @@
 
 //
 // System includes (sorted by alphabetic order)
+#include <sstream>
 
 //
 // ITK includes (sorted by alphabetic order)
@@ -37,6 +38,7 @@
 
 //
 // Monteverdi includes (sorted by alphabetic order)
+#include "Core/mvdAlgorithm.h"
 
 namespace mvd
 {
@@ -59,21 +61,92 @@ namespace
 
 /*****************************************************************************/
 /* STATIC IMPLEMENTATION SECTION                                             */
-
+/*****************************************************************************/
+std::string
+DatabaseError
+::whatString( const QSqlError& sqlError, const QString& msg )
+{
+  std::stringstream strStream( std::ios_base::out );
+
+  switch( sqlError.type() )
+    {
+    case QSqlError::NoError:
+      strStream <<
+        ToStdString(
+          QCoreApplication::translate(
+            "mvd::DatabaseError",
+            "No database error"
+          )
+        );
+      break;
+
+    case QSqlError::ConnectionError:
+      strStream <<
+        ToStdString(
+          QCoreApplication::translate(
+            "mvd::DatabaseError",
+            "Database connection error"
+          )
+        );
+      break;
+
+    case QSqlError::StatementError:
+      strStream <<
+        ToStdString(
+          QCoreApplication::translate(
+            "mvd::DatabaseError",
+            "SQL statement syntax error" )
+        );
+      break;
+
+    case QSqlError::TransactionError:
+      strStream <<
+        ToStdString(
+          QCoreApplication::translate(
+            "mvd::DatabaseError",
+            "Database transaction failed error" )
+        );
+      break;
+
+    case QSqlError::UnknownError:
+      strStream <<
+        ToStdString(
+          QCoreApplication::translate(
+            "mvd::DatabaseError",
+            "Unknown database error" )
+        );
+      break;
+
+    default:
+      assert( false && "Unexpected QSqlError::ErrorType." );
+      break;
+    }
+
+  strStream <<
+    " " << sqlError.number() <<
+    ": " << ToStdString( sqlError.text() );
+
+  if( !msg.isEmpty() )
+    strStream << std::endl << ToStdString( msg );
+
+  return strStream.str();
+}
 
 /*****************************************************************************/
 /* CLASS IMPLEMENTATION SECTION                                              */
 
 /*******************************************************************************/
 DatabaseError
-::DatabaseError( QObject* parent ) :
-  QObject( parent )
+::DatabaseError( const QSqlError& sqlError ) :
+  std::runtime_error( whatString( sqlError ) ),
+  m_SqlError( sqlError )
 {
 }
 
 /*******************************************************************************/
 DatabaseError
 ::~DatabaseError()
+  throw()
 {
 }
 

Code/Common/Core/mvdDatabaseError.h

@@ -31,10 +31,11 @@
 //
 // Qt includes (sorted by alphabetic order)
 //// Must be included before system/custom includes.
-#include <QtCore>
+#include <QtSql>
 
 //
 // System includes (sorted by alphabetic order)
+#include <stdexcept>
 
 //
 // ITK includes (sorted by alphabetic order)
@@ -70,13 +71,9 @@ namespace mvd
  * \brief WIP.
  */
 class Monteverdi2_EXPORT DatabaseError :
-    public QObject
+    public std::runtime_error
 {
 
-  /*-[ QOBJECT SECTION ]-----------------------------------------------------*/
-
-  Q_OBJECT;
-
   /*-[ PUBLIC SECTION ]------------------------------------------------------*/
 
 //
@@ -84,22 +81,10 @@ class Monteverdi2_EXPORT DatabaseError :
 public:
 
   /** \brief Constructor. */
-  DatabaseError( QObject* parent =NULL );
+  DatabaseError( const QSqlError& sqlError );
 
   /** \brief Destructor. */
-  virtual ~DatabaseError();
-
-  /*-[ PUBLIC SLOTS SECTION ]------------------------------------------------*/
-
-//
-// Public SLOTS.
-public slots:
-
-  /*-[ SIGNALS SECTION ]-----------------------------------------------------*/
-
-//
-// Signals.
-signals:
+  virtual ~DatabaseError() throw();
 
   /*-[ PROTECTED SECTION ]---------------------------------------------------*/
 
@@ -116,17 +101,13 @@ protected:
 //
 // Private methods.
 private:
-
+  static std::string whatString( const QSqlError& sqlError,
+                                 const QString& msg =QString() );
 
 //
 // Private attributes.
 private:
-
-  /*-[ PRIVATE SLOTS SECTION ]-----------------------------------------------*/
-
-//
-// Slots.
-private slots:
+  QSqlError m_SqlError;
 };
 
 } // end namespace 'mvd'.

Code/Common/Gui/mvdI18nMainWindow.cxx

@@ -35,8 +35,8 @@
 
 //
 // Monteverdi includes (sorted by alphabetic order)
+#include "Core/mvdDatabaseConnection.h"
 #include "Core/mvdDatasetModel.h"
-//
 #include "Gui/mvdAboutDialog.h"
 #include "Gui/mvdI18nApplication.h"
 
@@ -248,7 +248,12 @@ I18nMainWindow
       dir.setPath( path );
     }
 
-  I18nApplication::Instance()->MakeCacheDir( dir.path() );
+  bool isNew = I18nApplication::Instance()->MakeCacheDir( dir.path() );
+
+  //
+  // Setup initial empty database
+  if( isNew )
+    DatabaseConnection::Foo();
 }
 
 /*****************************************************************************/