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<?php
/**
* Part of bdrem
*
* PHP version 5
*
* @category Tools
* @package Bdrem
* @author Christian Weiske <cweiske@cweiske.de>
* @copyright 2014 Christian Weiske
* @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3
* @link http://cweiske.de/bdrem.htm
*/
namespace bdrem;
/**
* Fetch data from an SQL database
*
* @category Tools
* @package Bdrem
* @author Christian Weiske <cweiske@cweiske.de>
* @copyright 2014 Christian Weiske
* @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3
* @link http://cweiske.de/bdrem.htm
*/
class Source_Sql
{
/**
* PDO data source description
* @var string
*/
protected $dsn;
/**
* Database user name
* @var string
*/
protected $user;
/**
* Database password
* @var string
*/
protected $password;
/**
* Database table with event data
* @var string
*/
protected $table;
/**
* Field configuration
* Keys:
* - date - array of columns with dates and their event title,
* e.g. 'c_birthday' => 'Birthday'
* - name - array of name columns
* - nameFormat - sprintf-compatible name formatting instruction,
* uses name columns
*
* @var array
*/
protected $fields;
/**
* Set SQL server configuration
*
* @param array $config SQL server configuration with keys:
* dsn, user, password, table and fields
*/
public function __construct($config)
{
$this->dsn = $config['dsn'];
$this->user = $config['user'];
$this->password = $config['password'];
$this->table = $config['table'];
$this->fields = $config['fields'];
}
/**
* Return all events for the given date range
*
* @param string $strDate Date the events shall be found for,
* YYYY-MM-DD
* @param integer $nDaysPrevious Include number of days before $strDate
* @param integer $nDaysNext Include number of days after $strDate
*
* @return Event[] Array of matching event objects
*/
public function getEvents($strDate, $nDaysPrevious, $nDaysNext)
{
$dbh = new \PDO(
$this->dsn, $this->user, $this->password,
array(\PDO::ATTR_ERRMODE => \PDO::ERRMODE_EXCEPTION)
);
$arDays = $this->getDates($strDate, $nDaysPrevious, $nDaysNext);
$arEvents = array();
foreach ($this->fields['date'] as $field => $typeName) {
if (substr($this->dsn, 0, 5) == 'dblib') {
//MS SQL Server does of course cook its own sht
$sqlMonth = 'DATEPART(month, ' . $field . ')';
$sqlDay = 'DATEPART(day, ' . $field . ')';
} else {
$sqlMonth = 'EXTRACT(MONTH FROM ' . $field . ')';
$sqlDay = 'EXTRACT(DAY FROM ' . $field . ')';
}
$parts = array();
foreach ($arDays as $month => $days) {
$parts[] = '('
. $sqlMonth . ' = ' . $dbh->quote($month, \PDO::PARAM_INT)
. ' AND ' . $sqlDay . ' >= '
. $dbh->quote(min($days), \PDO::PARAM_INT)
. ' AND ' . $sqlDay . ' <= '
. $dbh->quote(max($days), \PDO::PARAM_INT)
. ')';
}
$sql = 'SELECT ' . $field . ' AS e_date'
. ', ' . implode(', ', (array) $this->fields['name'])
. ' FROM ' . $this->table
. ' WHERE '
. implode(' OR ', $parts);
$res = $dbh->query($sql);
while ($row = $res->fetchObject()) {
$arNameData = array();
foreach ((array) $this->fields['name'] as $fieldName) {
$arNameData[] = $row->$fieldName;
}
$name = call_user_func_array(
'sprintf',
array_merge(
array($this->fields['nameFormat']),
$arNameData
)
);
$event = new Event(
$name, $typeName,
str_replace('0000', '????', $row->e_date)
);
if ($event->isWithin($strDate, $nDaysPrevious, $nDaysNext)) {
$arEvents[] = $event;
}
}
}
return $arEvents;
}
/**
* Create an array of dates that are included in the given range.
*
* @param string $strDate Date the events shall be found for,
* YYYY-MM-DD
* @param integer $nDaysPrevious Include number of days before $strDate
* @param integer $nDaysNext Include number of days after $strDate
*
* @return array Key is the month, value an array of days
*/
protected function getDates($strDate, $nDaysPrevious, $nDaysNext)
{
$ts = strtotime($strDate) - 86400 * $nDaysPrevious;
$numDays = $nDaysPrevious + $nDaysNext;
$arDays = array();
do {
$arDays[(int) date('n', $ts)][] = (int) date('j', $ts);
$ts += 86400;
} while (--$numDays >= 0);
return $arDays;
}
}
?>
|
