src/Core/Config/Adapter/JITPConfigAdapter.php

   1 <?php
   2 namespace Friendica\Core\Config\Adapter;
   3
   4 use Friendica\Database\DBA;
   5
   6 /**
   7  * JustInTime User Configuration Adapter
   8  *
   9  * Default PConfig Adapter. Provides the best performance for pages loading few configuration variables.
  10  *
  11  * @author Hypolite Petovan <hypolite@mrpetovan.com>
  12  */
  13 class JITPConfigAdapter extends AbstractDbaConfigAdapter implements IPConfigAdapter
  14 {
  15         private $in_db;
  16
  17         /**
  18          * {@inheritdoc}
  19          */
  20         public function load($uid, $cat)
  21         {
  22                 $return = [];
  23
  24                 if (!$this->isConnected()) {
  25                         return $return;
  26                 }
  27
  28                 $pconfigs = DBA::select('pconfig', ['v', 'k'], ['cat' => $cat, 'uid' => $uid]);
  29                 if (DBA::isResult($pconfigs)) {
  30                         while ($pconfig = DBA::fetch($pconfigs)) {
  31                                 $key = $pconfig['k'];
  32
  33                                 $return[$key] = $pconfig['v'];
  34
  35                                 $this->in_db[$uid][$cat][$key] = true;
  36                         }
  37                 } else if ($cat != 'config') {
  38                         // Negative caching
  39                         $return = "!<unset>!";
  40                 }
  41                 DBA::close($pconfigs);
  42
  43                 return [$cat => $return];
  44         }
  45
  46         /**
  47          * {@inheritdoc}
  48          */
  49         public function get($uid, $cat, $key)
  50         {
  51                 if (!$this->isConnected()) {
  52                         return '!<unset>!';
  53                 }
  54
  55                 $pconfig = DBA::selectFirst('pconfig', ['v'], ['uid' => $uid, 'cat' => $cat, 'k' => $key]);
  56                 if (DBA::isResult($pconfig)) {
  57                         // manage array value
  58                         $value = (preg_match("|^a:[0-9]+:{.*}$|s", $pconfig['v']) ? unserialize($pconfig['v']) : $pconfig['v']);
  59
  60                         $this->in_db[$uid][$cat][$key] = true;
  61                         return $value;
  62                 } else {
  63
  64                         $this->in_db[$uid][$cat][$key] = false;
  65                         return '!<unset>!';
  66                 }
  67         }
  68
  69         /**
  70          * {@inheritdoc}
  71          */
  72         public function set($uid, $cat, $key, $value)
  73         {
  74                 if (!$this->isConnected()) {
  75                         return false;
  76                 }
  77
  78                 // We store our setting values in a string variable.
  79                 // So we have to do the conversion here so that the compare below works.
  80                 // The exception are array values.
  81                 $dbvalue = (!is_array($value) ? (string)$value : $value);
  82
  83                 $stored = $this->get($uid, $cat, $key);
  84
  85                 if (!isset($this->in_db[$uid])) {
  86                         $this->in_db[$uid] = [];
  87                 }
  88                 if (!isset($this->in_db[$uid][$cat])) {
  89                         $this->in_db[$uid][$cat] = [];
  90                 }
  91                 if (!isset($this->in_db[$uid][$cat][$key])) {
  92                         $this->in_db[$uid][$cat][$key] = false;
  93                 }
  94
  95                 if (($stored === $dbvalue) && $this->in_db[$uid][$cat][$key]) {
  96                         return true;
  97                 }
  98
  99                 // manage array value
 100                 $dbvalue = (is_array($value) ? serialize($value) : $dbvalue);
 101
 102                 $result = DBA::update('pconfig', ['v' => $dbvalue], ['uid' => $uid, 'cat' => $cat, 'k' => $key], true);
 103
 104                 $this->in_db[$uid][$cat][$key] = $result;
 105
 106                 return $result;
 107         }
 108
 109         /**
 110          * {@inheritdoc}
 111          */
 112         public function delete($uid, $cat, $key)
 113         {
 114                 if (!$this->isConnected()) {
 115                         return false;
 116                 }
 117
 118                 if (!empty($this->in_db[$uid][$cat][$key])) {
 119                         unset($this->in_db[$uid][$cat][$key]);
 120                 }
 121
 122                 $result = DBA::delete('pconfig', ['uid' => $uid, 'cat' => $cat, 'k' => $key]);
 123
 124                 return $result;
 125         }
 126
 127         /**
 128          * {@inheritdoc}
 129          */
 130         public function isLoaded($uid, $cat, $key)
 131         {
 132                 if (!$this->isConnected()) {
 133                         return false;
 134                 }
 135
 136                 return (isset($this->in_db[$uid][$cat][$key])) && $this->in_db[$uid][$cat][$key];
 137         }
 138 }