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<?php
namespace bdrem;
/**
* Fetch data from an SQL database
*/
class Source_Sql
{
protected $dsn;
protected $user;
protected $password;
protected $table;
protected $fields ;
public function __construct($config)
{
$this->dsn = $config['dsn'];
$this->user = $config['user'];
$this->password = $config['password'];
$this->table = $config['table'];
$this->fields = $config['fields'];
}
/**
* @param string $strDate Date the events shall be found for, YYYY-MM-DD
*/
public function getEvents($strDate, $nDaysBefore, $nDaysAfter)
{
$dbh = new \PDO($this->dsn, $this->user, $this->password);
$arDays = $this->getDates($strDate, $nDaysBefore, $nDaysAfter);
$arEvents = array();
foreach ($this->fields['date'] as $field => $typeName) {
$fieldSql = 'CONCAT('
. 'EXTRACT(MONTH FROM ' . $field . '),'
. '"-",'
. 'EXTRACT(DAY FROM ' . $field . ')'
. ') = ';
$parts = array();
foreach ($arDays as $day) {
$parts[] = $fieldSql . $dbh->quote($day);
}
$sql = 'SELECT ' . $field . ' AS e_date'
. ', ' . $this->fields['name'] . ' AS e_name'
. ' FROM ' . $this->table
. ' WHERE '
. implode(' OR ', $parts);
$res = $dbh->query($sql);
if ($res === false) {
$errorInfo = $dbh->errorInfo();
throw new \Exception(
'SQL error #' . $errorInfo[0]
. ': ' . $errorInfo[1]
. ': ' . $errorInfo[2],
(int) $errorInfo[1]
);
}
while ($row = $res->fetchObject()) {
$event = new Event(
$row->e_name, $typeName,
str_replace('0000', '????', $row->e_date)
);
if ($event->isWithin($strDate, $nDaysBefore, $nDaysAfter)) {
$arEvents[] = $event;
}
}
}
return $arEvents;
}
protected function getDates($strDate, $nDaysBefore, $nDaysAfter)
{
$ts = strtotime($strDate) - 86400 * $nDaysBefore;
$numDays = $nDaysBefore + $nDaysAfter;
$arDays = array();
do {
$arDays[] = date('n-j', $ts);
$ts += 86400;
} while (--$numDays >= 0);
return $arDays;
}
}
?>
|
