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<?php |
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namespace ByJG\AnyDataset\Dataset; |
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use ByJG\AnyDataset\Exception\IteratorException; |
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use InvalidArgumentException; |
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class JsonIterator extends GenericIterator |
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{ |
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/** |
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* @var array |
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*/ |
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private $jsonObject; |
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/** |
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* Enter description here... |
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* |
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* @var int |
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*/ |
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private $current = 0; |
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/** |
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* JsonIterator constructor. |
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* |
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* @param $jsonObject |
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* @param string $path |
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* @param bool $throwErr |
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* @throws \ByJG\AnyDataset\Exception\IteratorException |
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*/ |
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public function __construct($jsonObject, $path = "", $throwErr = false) |
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{ |
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if (!is_array($jsonObject)) { |
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throw new InvalidArgumentException("Invalid JSON object"); |
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} |
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if ($path != "") { |
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if ($path[0] == "/") { |
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$path = substr($path, 1); |
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} |
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$pathAr = explode("/", $path); |
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$newjsonObject = $jsonObject; |
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foreach ($pathAr as $key) { |
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if (array_key_exists($key, $newjsonObject)) { |
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$newjsonObject = $newjsonObject[$key]; |
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} elseif ($throwErr) { |
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throw new IteratorException("Invalid path '$path' in JSON Object"); |
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} else { |
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$newjsonObject = array(); |
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break; |
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} |
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} |
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$this->jsonObject = $newjsonObject; |
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} else { |
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$this->jsonObject = $jsonObject; |
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} |
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$this->current = 0; |
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} |
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public function count() |
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{ |
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return (count($this->jsonObject)); |
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} |
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/** |
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* @access public |
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* @return bool |
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*/ |
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public function hasNext() |
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{ |
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if ($this->current < $this->count()) { |
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return true; |
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} |
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return false; |
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} |
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/** |
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* @access public |
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* @return Row |
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* @throws \ByJG\AnyDataset\Exception\IteratorException |
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* @throws \ByJG\Serializer\Exception\InvalidArgumentException |
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*/ |
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public function moveNext() |
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{ |
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if (!$this->hasNext()) { |
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throw new IteratorException("No more records. Did you used hasNext() before moveNext()?"); |
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} |
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return new Row($this->jsonObject[$this->current++]); |
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} |
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public function key() |
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{ |
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return $this->current; |
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} |
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} |
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byjg /
anydataset
