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/*
statisticsdb.cpp
Copyright (c) 2003-2004 by Marc Cramdal <marc.cramdal@gmail.com>
*************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
*************************************************************************
*/
#include <qfile.h>
#include "sqlite/sqlite3.h"
#include <kgenericfactory.h>
#include <kaboutdata.h>
#include <kaction.h>
#include <kdebug.h>
#include <kmessagebox.h>
#include <kstandarddirs.h>
#include <kdeversion.h>
#include "statisticsdb.h"
#include <unistd.h>
#include <time.h>
StatisticsDB::StatisticsDB()
{
QCString path = (::locateLocal("appdata", "kopete_statistics-0.1.db")).latin1();
kdDebug() << "statistics: DB path:" << path << endl;
// Open database file and check for correctness
bool failOpen = true;
QFile file( path );
if ( file.open( IO_ReadOnly ) )
{
QString format;
file.readLine( format, 50 );
if ( !format.startsWith( "SQLite format 3" ) )
{
kdWarning() << "[statistics] Database versions incompatible. Removing and rebuilding database.\n";
}
else if ( sqlite3_open( path, &m_db ) != SQLITE_OK )
{
kdWarning() << "[statistics] Database file corrupt. Removing and rebuilding database.\n";
sqlite3_close( m_db );
}
else
failOpen = false;
}
if ( failOpen )
{
// Remove old db file; create new
QFile::remove( path );
sqlite3_open( path, &m_db );
}
kdDebug() << "[Statistics] Contructor"<< endl;
// Creates the tables if they do not exist.
QStringList result = query("SELECT name FROM sqlite_master WHERE type='table'");
if (!result.contains("contacts"))
{
query(QString("CREATE TABLE contacts "
"(id INTEGER PRIMARY KEY,"
"statisticid TEXT,"
"contactid TEXT"
");"));
}
if (!result.contains("contactstatus"))
{
kdDebug() << "[Statistics] Database empty"<< endl;
query(QString("CREATE TABLE contactstatus "
"(id INTEGER PRIMARY KEY,"
"metacontactid TEXT,"
"status TEXT,"
"datetimebegin INTEGER,"
"datetimeend INTEGER"
");"));
}
if (!result.contains("commonstats"))
{
// To store things like the contact answer time etc.
query(QString("CREATE TABLE commonstats"
" (id INTEGER PRIMARY KEY,"
"metacontactid TEXT,"
"statname TEXT," // for instance, answertime, lastmessage, messagelength ...
"statvalue1 TEXT,"
"statvalue2 TEXT"
");"));
}
/// @fixme This is not used anywhere
if (!result.contains("statsgroup"))
{
query(QString("CREATE TABLE statsgroup"
"(id INTEGER PRIMARY KEY,"
"datetimebegin INTEGER,"
"datetimeend INTEGER,"
"caption TEXT);"));
}
}
StatisticsDB::~StatisticsDB()
{
sqlite3_close(m_db);
}
/**
* Executes a SQL query on the already opened database
* @param statement SQL program to execute. Only one SQL statement is allowed.
* @param debug Set to true for verbose debug output.
* @retval names Will contain all column names, set to NULL if not used.
* @return The queried data, or QStringList() on error.
*/
QStringList StatisticsDB::query( const QString& statement, QStringList* const names, bool debug )
{
if ( debug )
kdDebug() << "query-start: " << statement << endl;
clock_t start = clock();
if ( !m_db )
{
kdError() << k_funcinfo << "[CollectionDB] SQLite pointer == NULL.\n";
return QStringList();
}
int error;
QStringList values;
const char* tail;
sqlite3_stmt* stmt;
//compile SQL program to virtual machine
error = sqlite3_prepare( m_db, statement.utf8(), statement.length(), &stmt, &tail );
if ( error != SQLITE_OK )
{
kdError() << k_funcinfo << "[CollectionDB] sqlite3_compile error:" << endl;
kdError() << sqlite3_errmsg( m_db ) << endl;
kdError() << "on query: " << statement << endl;
return QStringList();
}
int busyCnt = 0;
int number = sqlite3_column_count( stmt );
//execute virtual machine by iterating over rows
while ( true )
{
error = sqlite3_step( stmt );
if ( error == SQLITE_BUSY )
{
if ( busyCnt++ > 20 ) {
kdError() << "[CollectionDB] Busy-counter has reached maximum. Aborting this sql statement!\n";
break;
}
::usleep( 100000 ); // Sleep 100 msec
kdDebug() << "[CollectionDB] sqlite3_step: BUSY counter: " << busyCnt << endl;
}
if ( error == SQLITE_MISUSE )
kdDebug() << "[CollectionDB] sqlite3_step: MISUSE" << endl;
if ( error == SQLITE_DONE || error == SQLITE_ERROR )
break;
//iterate over columns
for ( int i = 0; i < number; i++ )
{
values << QString::fromUtf8( (const char*) sqlite3_column_text( stmt, i ) );
if ( names ) *names << QString( sqlite3_column_name( stmt, i ) );
}
}
//deallocate vm ressources
sqlite3_finalize( stmt );
if ( error != SQLITE_DONE )
{
kdError() << k_funcinfo << "sqlite_step error.\n";
kdError() << sqlite3_errmsg( m_db ) << endl;
kdError() << "on query: " << statement << endl;
return QStringList();
}
if ( debug )
{
clock_t finish = clock();
const double duration = (double) (finish - start) / CLOCKS_PER_SEC;
kdDebug() << "[CollectionDB] SQL-query (" << duration << "s): " << statement << endl;
}
return values;
}
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