/**
* check if openads tables already exist in the specified database
*
* @return boolean
*/
function checkExistingTables()
{
$result = true;
$aExistingTables = OA_DB_Table::listOATablesCaseSensitive();
$oldTableMessagePrefix = 'Your database contains an old OpenX configuration table: ';
$oldTableMessagePostfix = 'If you are trying to upgrade this database, please copy your existing configuration file into the var folder of this install. If you wish to proceed with a fresh installation, please either choose a new Table Prefix or a new Database.';
if (in_array($this->aDsn['table']['prefix'] . 'config', $aExistingTables)) {
$this->oLogger->logError($oldTableMessagePrefix . $this->aDsn['table']['prefix'] . 'config. ' . $oldTableMessagePostfix);
return false;
}
if (in_array($this->aDsn['table']['prefix'] . 'preference', $aExistingTables)) {
$this->oLogger->logError($oldTableMessagePrefix . $this->aDsn['table']['prefix'] . 'preference. ' . $oldTableMessagePostfix);
return false;
}
if (in_array($this->aDsn['table']['prefix'] . 'preferences', $aExistingTables)) {
$this->oLogger->logError($oldTableMessagePrefix . $this->aDsn['table']['prefix'] . 'preferences. ' . $oldTableMessagePostfix);
return false;
}
$tablePrefixError = false;
foreach ($aExistingTables as &$tablename) {
if (substr($tablename, 0, strlen($this->aDsn['table']['prefix'])) == $this->aDsn['table']['prefix']) {
$result = false;
$this->oLogger->log('Table with the prefix ' . $this->aDsn['table']['prefix'] . ' found: ' . $tablename);
if ($tablePrefixError == false) {
$this->oLogger->logError('The database you have chosen already contains tables with the prefix ' . $this->aDsn['table']['prefix']);
$this->oLogger->logError('Please either remove these tables or choose a new prefix');
$tablePrefixError = true;
}
}
}
return $result;
}
