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<?php |
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namespace Foolz\SphinxQL\Drivers; |
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use Foolz\SphinxQL\Exception\DatabaseException; |
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class MultiResultSet implements MultiResultSetInterface |
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{ |
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/** |
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* @var null|array |
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*/ |
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protected $stored; |
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/** |
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* @var int |
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*/ |
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protected $cursor = 0; |
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/** |
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* @var int |
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*/ |
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protected $next_cursor = 0; |
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/** |
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* @var ResultSetInterface|null |
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*/ |
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protected $rowSet; |
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/** |
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* @var MultiResultSetAdapterInterface |
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*/ |
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protected $adapter; |
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/** |
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* @var bool |
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*/ |
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protected $valid = true; |
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/** |
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* @param MultiResultSetAdapterInterface $adapter |
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*/ |
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public function __construct(MultiResultSetAdapterInterface $adapter) |
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{ |
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$this->adapter = $adapter; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getStored() |
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{ |
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$this->store(); |
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return $this->stored; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function offsetExists($offset) |
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{ |
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$this->store(); |
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return $this->storedValid($offset); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function offsetGet($offset) |
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{ |
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$this->store(); |
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return $this->stored[$offset]; |
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} |
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/** |
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* @inheritdoc |
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* @codeCoverageIgnore |
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*/ |
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public function offsetSet($offset, $value) |
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{ |
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throw new \BadMethodCallException('Not implemented'); |
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} |
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/** |
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* @inheritdoc |
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* @codeCoverageIgnore |
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*/ |
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public function offsetUnset($offset) |
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{ |
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throw new \BadMethodCallException('Not implemented'); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function next() |
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{ |
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$this->rowSet = $this->getNext(); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function key() |
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{ |
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return (int)$this->cursor; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function rewind() |
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{ |
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// we actually can't roll this back unless it was stored first |
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$this->cursor = 0; |
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$this->next_cursor = 0; |
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$this->rowSet = $this->getNext(); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function count() |
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{ |
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$this->store(); |
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return count($this->stored); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function valid() |
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{ |
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if ($this->stored !== null) { |
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return $this->storedValid(); |
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} |
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return $this->adapter->valid(); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function current() |
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{ |
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$rowSet = $this->rowSet; |
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unset($this->rowSet); |
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return $rowSet; |
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} |
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/** |
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* @param null|int $cursor |
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* |
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* @return bool |
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*/ |
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protected function storedValid($cursor = null) |
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{ |
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$cursor = (!is_null($cursor) ? $cursor : $this->cursor); |
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return $cursor >= 0 && $cursor < count($this->stored); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getNext() |
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{ |
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$this->cursor = $this->next_cursor; |
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if ($this->stored !== null) { |
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$resultSet = !$this->storedValid() ? false : $this->stored[$this->cursor]; |
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} else { |
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if ($this->next_cursor > 0) { |
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$this->adapter->getNext(); |
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} |
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$resultSet = !$this->adapter->valid() ? false : $this->adapter->current(); |
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} |
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$this->next_cursor++; |
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return $resultSet; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function store() |
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{ |
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if ($this->stored !== null) { |
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return $this; |
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} |
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// don't let users mix storage and driver cursors |
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if ($this->next_cursor > 0) { |
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throw new DatabaseException('The MultiResultSet is using the driver cursors, store() can\'t fetch all the data'); |
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} |
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$store = array(); |
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while ($set = $this->getNext()) { |
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// this relies on stored being null! |
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$store[] = $set->store(); |
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} |
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$this->cursor = 0; |
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$this->next_cursor = 0; |
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// if we write the array straight to $this->stored it won't be null anymore and functions relying on null will break |
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$this->stored = $store; |
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return $this; |
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} |
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} |
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