initial commit

cpicturelibrary.cpp

@@ -0,0 +1,114 @@
+#include "cpicturelibrary.h"
+#include "common.h"
+
+#include <QSqlQuery>
+#include <QSqlError>
+
+#include <QSettings>
+
+
+cPictureLibrary::cPictureLibrary(QObject *parent) : QObject(parent)
+{
+	if(!openDatabase())
+		return;
+}
+
+bool cPictureLibrary::openDatabase()
+{
+	QSettings	settings;
+	QString		szDB	= settings.value("database/path").toString();
+
+	m_db	= QSqlDatabase::addDatabase("QSQLITE");
+	m_db.setHostName("localhost");
+	m_db.setDatabaseName(szDB);
+
+	if(!m_db.open())
+	{
+		myDebug << m_db.lastError().text();
+		return(false);
+	}
+
+	if(!m_db.tables().contains("config"))
+		createDatabase();
+	else
+	{
+		QSqlQuery	query;
+
+		query.prepare("SELECT version FROM config;");
+		if(!query.exec())
+		{
+			myDebug << query.lastError().text();
+			m_db.close();
+			return(false);
+		}
+
+		query.next();
+		if(query.value("version").toInt() < 2)
+			updateDatabase(query.value("version").toInt());
+		query.finish();
+	}
+
+	return(true);
+}
+
+bool cPictureLibrary::createTable(const QString& szSQL)
+{
+	QSqlQuery	query;
+
+	query.prepare(szSQL);
+
+	if(!query.exec())
+	{
+		myDebug << szSQL << "\n" << query.lastError().text();
+		return(false);
+	}
+
+	return(true);
+}
+
+bool cPictureLibrary::createDatabase()
+{
+	QSqlQuery	query;
+
+	if(!createTable("CREATE TABLE config ( "
+					"    version                  INTEGER"
+					"); "))
+		return(false);
+
+	query.prepare("INSERT INTO config (version) VALUES (:version);");
+	query.bindValue(":version", 1);
+	if(!query.exec())
+	{
+		myDebug << query.lastError().text();
+		return(false);
+	}
+
+	return(true);
+}
+
+bool cPictureLibrary::updateDatabase(qint32 version)
+{
+	if(version < 2)
+		updateDatabase2(version);
+
+	return(true);
+}
+
+bool cPictureLibrary::updateDatabase2(qint32 /*version*/)
+{
+	QSqlQuery	query;
+
+	if(!query.exec("ALTER TABLE config ADD rootPath TEXT;"))
+	{
+		myDebug << query.lastError().text();
+		return(false);
+	}
+
+	if(!query.exec("UPDATE config SET version=2;"))
+	{
+		myDebug << query.lastError().text();
+		return(false);
+	}
+
+	return(true);
+}