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<?php
/**
* Класс модели данных
*
* @copyright NetMonsters <team@netmonsters.ru>
* @link http://netmonsters.ru
* @package Majestic
* @subpackage Model
* @since 2011-11-11
*/
/**
* @property SqlDbDriver $db
*/
abstract class SqlModel extends Model
{
/**
* @param string $ident
* @return string Quoted identifier.
*/
public function identify($ident)
{
return $this->db->quoteIdentifier($ident);
}
/**
* @param mixed $value
* @return string Quoted value.
*/
public function quote($value)
{
return $this->db->quote($value);
}
/**
* @param int $id
* @return object
*/
public function get($id)
{
$sql = 'SELECT * FROM :table WHERE :pk=?';
return $this->fetch($sql, $id);
}
/**
* @param array $data
* @param mixed $where
* @return int Number of affected rows
*/
public function update($data, $where)
{
if (is_int($where) || $where === (string)(int)$where) {
$where = $this->identify($this->key) . '=' . (int)$where;
}
return parent::update($data, $where);
}
/**
* @param int $id Int id
* @return int Number of affected rows
*/
public function delete($id)
{
$where = $this->identify($this->key) . '=' . (int)$id;
return $this->db->delete($this->table(), $where);
}
/**
* Creates order sql string
*
* @param array $params
* @param array $sortable
* @return string
*/
protected function order($params, $sortable = array('id'))
{
$sql = '';
if (isset($params['sort'])) {
if (!is_array($params['sort'])) {
if (isset($params['order'])) {
$params['order'] = array($params['sort'] => $params['order']);
}
$params['sort'] = array($params['sort']);
}
$order_list = array();
for ($i = 0; $i < count($params['sort']); $i++) {
$order = (isset($params['order'][$params['sort'][$i]]) && $params['order'][$params['sort'][$i]] == 'desc') ? 'DESC' : 'ASC';
if (in_array($params['sort'][$i], $sortable)) {
$order_list[] = $this->identify($params['sort'][$i]) . ' ' . $order;
}
}
if ($order_list) {
$sql = ' ORDER BY ' . implode(',', $order_list);
}
}
return $sql;
}
/**
* Searches using like
*
* @param array $params
* @param array $searchable
* @param string $table_prefix
* @return string
*/
protected function search($params, $searchable = array('id'), $table_prefix = '')
{
$sql = '';
if (isset($params['q']) && isset($params['qt']) && in_array($params['qt'], $searchable)) {
if ($table_prefix) {
$sql = $table_prefix . '.';
}
$sql .= $this->identify($params['qt']) . ' LIKE ' . $this->quote('%' . $params['q'] . '%');
}
return $sql;
}
/**
* This method appends to params table and primary key.
* So they can be accessed through `:table` and `:pk` placeholders.
*
* @param string $sql
* @param array $params
* @return DbStatement
*/
protected function query($sql, $params = array())
{
if (!is_array($params)) {
$params = array($params);
}
$params = array(
'table' => new DbExpr($this->identify($this->table())),
'pk' => new DbExpr($this->identify($this->key)),
) + $params;
return $this->db->query($sql, $params);
}
/**
* @param string $data Request
* @param array $params Request parameters
* @param string $field Requested field name
* @param CacheKey $cache_key Key for caching in
* @return mixed
*/
protected function fetchField($data, $params = array(), $field, $cache_key = null)
{
if (!$cache_key || !$result = $cache_key->get()) {
$result = $this->query($data, $params)->fetchField($field);
if ($cache_key) {
$cache_key->set($result);
}
}
return $result;
}
/**
* @param string $data Request
* @param array $params Request parameters
* @param CacheKey $cache_key Key for caching in
* @return mixed
*/
protected function fetch($data, $params = array(), $cache_key = null)
{
if (!$cache_key || !$result = $cache_key->get()) {
$result = $this->query($data, $params)->fetch();
if ($cache_key) {
$cache_key->set($result);
}
}
return $result;
}
/**
* @param string $data
* @param array $params
* @param CacheKey $cache_key
* @return array
*/
protected function fetchAll($data, $params = array(), $cache_key = null)
{
if (!$cache_key || !$result = $cache_key->get()) {
$result = $this->query($data, $params)->fetchAll();
if ($cache_key) {
$cache_key->set($result);
}
}
return $result;
}
/**
* @param $select array
* @param $distinct string|bool
* @param $where array @ex array('field=?' => $value, 'field=1')
* @param $order array @ex array('sort' => array('field1', 'field2'), 'order' => array('field2' => 'desc'))
* @param $limit string @ex '30' or '30,30'
* @param $heaving TODO
* @param $group_by TODO
* @param $sql_expression null|string
* @param $sql_expression_params array
* @param $cache_key CacheKey|null
* @return SqlResultProvider
*/
public function find($select, $distinct, $where, $order, $limit, $heaving = null, $group_by = null, $sql_expression = null, $sql_expression_params = array(), $cache_key = null)
{
$select = $this->db->selectExpr($select, $distinct);
$where = $this->db->whereExpr($where);
$order = isset($order['sort']) ? $this->order($order, $order['sort']) : false;
$limit = $this->db->limitExpr($limit);
$result_items = parent::fetchAll(
(($sql_expression) ? $sql_expression : ('SELECT ' . $select . ' FROM ' . $this->table()))
. (($where) ? (' WHERE ' . $where) : '')
. (($order) ? ($order) : '')
. (($limit) ? (' LIMIT ' . $limit) : ''),
$sql_expression_params,
$cache_key
);
return new SqlResultProvider($result_items);
}
/**
* @param $sql_expression null
* @param $sql_expression_params array
* @return SqlCriteria
*/
public function criteria($sql_expression = null, $sql_expression_params = array())
{
return new SqlCriteria($this, $sql_expression, $sql_expression_params);
}
}