src/BaseRepository.php

   1 <?php
   2
   3 namespace Friendica;
   4
   5 use Friendica\Database\Database;
   6 use Friendica\Database\DBA;
   7 use Friendica\Network\HTTPException;
   8 use Psr\Log\LoggerInterface;
   9
  10 /**
  11  * Repositories are Factories linked to one or more database tables.
  12  *
  13  * @see BaseModel
  14  * @see BaseCollection
  15  */
  16 abstract class BaseRepository extends BaseFactory
  17 {
  18         const LIMIT = 30;
  19
  20         /** @var Database */
  21         protected $dba;
  22
  23         /** @var string */
  24         protected static $table_name;
  25
  26         /** @var BaseModel */
  27         protected static $model_class;
  28
  29         /** @var BaseCollection */
  30         protected static $collection_class;
  31
  32         public function __construct(Database $dba, LoggerInterface $logger)
  33         {
  34                 parent::__construct($logger);
  35
  36                 $this->dba = $dba;
  37                 $this->logger = $logger;
  38         }
  39
  40         /**
  41          * Fetches a single model record. The condition array is expected to contain a unique index (primary or otherwise).
  42          *
  43          * Chainable.
  44          *
  45          * @param array $condition
  46          * @return BaseModel
  47          * @throws HTTPException\NotFoundException
  48          */
  49         public function selectFirst(array $condition)
  50         {
  51                 $data = $this->dba->selectFirst(static::$table_name, [], $condition);
  52
  53                 if (!$data) {
  54                         throw new HTTPException\NotFoundException(static::class . ' record not found.');
  55                 }
  56
  57                 return $this->create($data);
  58         }
  59
  60         /**
  61          * Populates a Collection according to the condition.
  62          *
  63          * Chainable.
  64          *
  65          * @param array $condition
  66          * @param array $params
  67          * @return BaseCollection
  68          * @throws \Exception
  69          */
  70         public function select(array $condition = [], array $params = [])
  71         {
  72                 $models = $this->selectModels($condition, $params);
  73
  74                 return new static::$collection_class($models);
  75         }
  76
  77         /**
  78          * Populates the collection according to the condition. Retrieves a limited subset of models depending on the boundaries
  79          * and the limit. The total count of rows matching the condition is stored in the collection.
  80          *
  81          * Chainable.
  82          *
  83          * @param array $condition
  84          * @param array $params
  85          * @param int?  $max_id
  86          * @param int?  $since_id
  87          * @param int   $limit
  88          * @return BaseCollection
  89          * @throws \Exception
  90          */
  91         public function selectByBoundaries(array $condition = [], array $params = [], int $max_id = null, int $since_id = null, int $limit = self::LIMIT)
  92         {
  93                 $condition = DBA::collapseCondition($condition);
  94
  95                 $boundCondition = $condition;
  96
  97                 if (isset($max_id)) {
  98                         $boundCondition[0] .= " AND `id` < ?";
  99                         $boundCondition[] = $max_id;
 100                 }
 101
 102                 if (isset($since_id)) {
 103                         $boundCondition[0] .= " AND `id` > ?";
 104                         $boundCondition[] = $since_id;
 105                 }
 106
 107                 $params['limit'] = $limit;
 108
 109                 $models = $this->selectModels($boundCondition, $params);
 110
 111                 $totalCount = DBA::count(static::$table_name, $condition);
 112
 113                 return new static::$collection_class($models, $totalCount);
 114         }
 115
 116         /**
 117          * This method updates the database row from the model.
 118          *
 119          * @param BaseModel $model
 120          * @return bool
 121          * @throws \Exception
 122          */
 123         public function update(BaseModel $model)
 124         {
 125                 return $this->dba->update(static::$table_name, $model->toArray(), ['id' => $model->id], $model->getOriginalData());
 126         }
 127
 128         /**
 129          * This method creates a new database row and returns a model if it was successful.
 130          *
 131          * @param array $fields
 132          * @return BaseModel|bool
 133          * @throws \Exception
 134          */
 135         public function insert(array $fields)
 136         {
 137                 $return = $this->dba->insert(static::$table_name, $fields);
 138
 139                 if (!$return) {
 140                         throw new HTTPException\InternalServerErrorException('Unable to insert new row in table "' . static::$table_name . '"');
 141                 }
 142
 143                 $fields['id'] = $this->dba->lastInsertId();
 144                 $return = $this->create($fields);
 145
 146                 return $return;
 147         }
 148
 149         /**
 150          * Deletes the model record from the database.
 151          *
 152          * @param BaseModel $model
 153          * @return bool
 154          * @throws \Exception
 155          */
 156         public function delete(BaseModel &$model)
 157         {
 158                 if ($success = $this->dba->delete(static::$table_name, ['id' => $model->id])) {
 159                         $model = null;
 160                 }
 161
 162                 return $success;
 163         }
 164
 165         /**
 166          * Base instantiation method, can be overriden to add specific dependencies
 167          *
 168          * @param array $data
 169          * @return BaseModel
 170          */
 171         protected function create(array $data)
 172         {
 173                 return new static::$model_class($this->dba, $this->logger, $data);
 174         }
 175
 176         /**
 177          * @param array $condition Query condition
 178          * @param array $params    Additional query parameters
 179          * @return BaseModel[]
 180          * @throws \Exception
 181          */
 182         protected function selectModels(array $condition, array $params = [])
 183         {
 184                 $result = $this->dba->select(static::$table_name, [], $condition, $params);
 185
 186                 /** @var BaseModel $prototype */
 187                 $prototype = null;
 188
 189                 $models = [];
 190
 191                 while ($record = $this->dba->fetch($result)) {
 192                         if ($prototype === null) {
 193                                 $prototype = $this->create($record);
 194                                 $models[] = $prototype;
 195                         } else {
 196                                 $models[] = static::$model_class::createFromPrototype($prototype, $record);
 197                         }
 198                 }
 199
 200                 return $models;
 201         }
 202
 203         /**
 204          * @param BaseCollection $collection
 205          */
 206         public function saveCollection(BaseCollection $collection)
 207         {
 208                 $collection->map([$this, 'update']);
 209         }
 210 }