src/Core/Config/JITPConfigAdapter.php

   1 <?php
   2 namespace Friendica\Core\Config;
   3
   4 use Friendica\BaseObject;
   5 use Friendica\Database\DBA;
   6
   7 require_once 'include/dba.php';
   8
   9 /**
  10  * JustInTime User Configuration Adapter
  11  *
  12  * Default PConfig Adapter. Provides the best performance for pages loading few configuration variables.
  13  *
  14  * @author Hypolite Petovan <mrpetovan@gmail.com>
  15  */
  16 class JITPConfigAdapter extends BaseObject implements IPConfigAdapter
  17 {
  18         private $in_db;
  19
  20         public function load($uid, $cat)
  21         {
  22                 $a = self::getApp();
  23
  24                 $pconfigs = DBA::select('pconfig', ['v', 'k'], ['cat' => $cat, 'uid' => $uid]);
  25                 if (DBA::isResult($pconfigs)) {
  26                         while ($pconfig = DBA::fetch($pconfigs)) {
  27                                 $k = $pconfig['k'];
  28
  29                                 self::getApp()->setPConfigValue($uid, $cat, $k, $pconfig['v']);
  30
  31                                 $this->in_db[$uid][$cat][$k] = true;
  32                         }
  33                 } else if ($cat != 'config') {
  34                         // Negative caching
  35                         $a->config[$uid][$cat] = "!<unset>!";
  36                 }
  37                 DBA::close($pconfigs);
  38         }
  39
  40         public function get($uid, $cat, $k, $default_value = null, $refresh = false)
  41         {
  42                 $a = self::getApp();
  43
  44                 if (!$refresh) {
  45                         // Looking if the whole family isn't set
  46                         if (isset($a->config[$uid][$cat])) {
  47                                 if ($a->config[$uid][$cat] === '!<unset>!') {
  48                                         return $default_value;
  49                                 }
  50                         }
  51
  52                         if (isset($a->config[$uid][$cat][$k])) {
  53                                 if ($a->config[$uid][$cat][$k] === '!<unset>!') {
  54                                         return $default_value;
  55                                 }
  56                                 return $a->config[$uid][$cat][$k];
  57                         }
  58                 }
  59
  60                 $pconfig = DBA::selectFirst('pconfig', ['v'], ['uid' => $uid, 'cat' => $cat, 'k' => $k]);
  61                 if (DBA::isResult($pconfig)) {
  62                         $val = (preg_match("|^a:[0-9]+:{.*}$|s", $pconfig['v']) ? unserialize($pconfig['v']) : $pconfig['v']);
  63
  64                         self::getApp()->setPConfigValue($uid, $cat, $k, $val);
  65
  66                         $this->in_db[$uid][$cat][$k] = true;
  67
  68                         return $val;
  69                 } else {
  70                         self::getApp()->setPConfigValue($uid, $cat, $k, '!<unset>!');
  71
  72                         $this->in_db[$uid][$cat][$k] = false;
  73
  74                         return $default_value;
  75                 }
  76         }
  77
  78         public function set($uid, $cat, $k, $value)
  79         {
  80                 // We store our setting values in a string variable.
  81                 // So we have to do the conversion here so that the compare below works.
  82                 // The exception are array values.
  83                 $dbvalue = (!is_array($value) ? (string)$value : $value);
  84
  85                 $stored = $this->get($uid, $cat, $k, null, true);
  86
  87                 if (($stored === $dbvalue) && $this->in_db[$uid][$cat][$k]) {
  88                         return true;
  89                 }
  90
  91                 self::getApp()->setPConfigValue($uid, $cat, $k, $value);
  92
  93                 // manage array value
  94                 $dbvalue = (is_array($value) ? serialize($value) : $dbvalue);
  95
  96                 $result = DBA::update('pconfig', ['v' => $dbvalue], ['uid' => $uid, 'cat' => $cat, 'k' => $k], true);
  97
  98                 if ($result) {
  99                         $this->in_db[$uid][$cat][$k] = true;
 100                 }
 101
 102                 return $result;
 103         }
 104
 105         public function delete($uid, $cat, $k)
 106         {
 107                 self::getApp()->deletePConfigValue($uid, $cat, $k);
 108
 109                 if (!empty($this->in_db[$uid][$cat][$k])) {
 110                         unset($this->in_db[$uid][$cat][$k]);
 111                 }
 112
 113                 $result = DBA::delete('pconfig', ['uid' => $uid, 'cat' => $cat, 'k' => $k]);
 114
 115                 return $result;
 116         }
 117 }