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<?php |
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namespace NwLaravel\Resultset; |
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use PDO; |
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use Iterator; |
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use Countable; |
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use PDOStatement; |
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use RuntimeException; |
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/** |
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* Class AbstractResultset |
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*/ |
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abstract class AbstractResultset implements Iterator, Countable |
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{ |
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/** |
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* @var \PDOStatement |
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*/ |
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protected $statement = null; |
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/** |
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* @var array Result options |
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*/ |
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protected $options; |
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/** |
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* Is the current complete? |
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* @var bool |
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*/ |
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protected $rewindComplete = false; |
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/** |
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* Is initialized |
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* @var bool |
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*/ |
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protected $initialized = false; |
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/** |
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* Track current item in recordset |
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* @var mixed |
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*/ |
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protected $currentData = false; |
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/** |
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* Current position of scrollable statement |
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* @var int |
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*/ |
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protected $position = -1; |
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/** |
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* @var int |
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*/ |
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protected $rowCount = null; |
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/** |
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* @var array |
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*/ |
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protected $fields = null; |
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/** |
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* Initialize |
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* |
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* @return void |
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*/ |
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public function initialize() |
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{ |
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$this->initialized = true; |
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} |
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/** |
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* Get statement |
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* |
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* @throws RuntimeException |
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* @return mixed |
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*/ |
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public function getStatement() |
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{ |
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if (!$this->statement instanceof PDOStatement) { |
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throw new RuntimeException("PDOStatement not defined, not initialize resultset"); |
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} |
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return $this->statement; |
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} |
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/** |
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* Get the data |
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* |
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* @return mixed |
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*/ |
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public function current() |
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{ |
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return $this->currentData; |
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} |
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/** |
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* Next |
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* |
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* @throws RuntimeException |
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* @return mixed |
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*/ |
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public function next() |
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{ |
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1 |
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$this->position++; |
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1 |
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return $this->fetch(); |
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} |
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/** |
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* Fetch |
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* |
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* @throws RuntimeException |
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* @return array |
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*/ |
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private function fetch() |
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{ |
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return $this->currentData = $this->getStatement()->fetch(PDO::FETCH_ASSOC); |
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} |
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/** |
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* Key |
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* |
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* @return mixed |
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*/ |
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public function key() |
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{ |
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1 |
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return $this->position; |
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} |
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/** |
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* Reset interator |
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* |
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* @throws RuntimeException |
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* @return void |
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*/ |
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5 |
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public function rewind() |
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{ |
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$this->initialize(); |
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5 |
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if ($this->rewindComplete) { |
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throw new RuntimeException("Rewind only once."); |
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} |
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5 |
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if (!$this->currentData) { |
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$this->fetch(); |
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} |
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$this->rewindComplete = true; |
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$this->position = 0; |
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} |
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/** |
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* Valid |
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* |
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* @return bool |
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*/ |
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1 |
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public function valid() |
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{ |
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1 |
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return ($this->currentData !== false && !is_null($this->currentData)); |
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} |
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/** |
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* Count |
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* |
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* @throws RuntimeException |
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* @return int |
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*/ |
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1 |
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public function count() |
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{ |
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1 |
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if (is_int($this->rowCount)) { |
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1 |
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return $this->rowCount; |
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} |
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1 |
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$this->rowCount = (int) $this->getStatement()->rowCount(); |
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1 |
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return $this->rowCount; |
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} |
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/** |
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* Fields |
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* |
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* @throws RuntimeException |
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* @return array |
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*/ |
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2 |
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public function getFields() |
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{ |
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if (is_array($this->fields)) { |
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2 |
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return $this->fields; |
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} |
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2 |
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$fields = array(); |
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2 |
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if (!$this->currentData) { |
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1 |
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$this->fetch(); |
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1 |
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} |
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2 |
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$current = $this->current(); |
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2 |
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if (is_array($current)) { |
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1 |
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$fields = array_keys($current); |
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2 |
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} elseif (is_object($current) && method_exists($current, 'toArray')) { |
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$fields = array_keys($current->toArray()); |
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1 |
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} |
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2 |
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$this->fields = $fields; |
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return $fields; |
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} |
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/** |
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210
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* Return numbers de fields |
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* |
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* @throws RuntimeException |
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* @return int |
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*/ |
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2 |
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public function getFieldCount() |
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{ |
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return count($this->getFields()); |
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} |
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} |
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naturalweb /
nwlaravel
