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<?php |
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namespace Coco\SourceWatcher\Core\Extractors; |
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use Coco\SourceWatcher\Core\Extractor; |
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use Coco\SourceWatcher\Core\Row; |
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use Coco\SourceWatcher\Core\SourceWatcherException; |
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use Flow\JSONPath\JSONPath; |
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use Flow\JSONPath\JSONPathException; |
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/** |
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* Class JsonExtractor |
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* @package Coco\SourceWatcher\Core\Extractors |
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*/ |
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class JsonExtractor extends Extractor |
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{ |
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/** |
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* @var array |
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*/ |
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private array $columns = []; |
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/** |
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* @var array |
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*/ |
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protected array $availableOptions = [ "columns" ]; |
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/** |
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* @return array |
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*/ |
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public function getColumns () : array |
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{ |
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return $this->columns; |
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} |
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/** |
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* @param array $columns |
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*/ |
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public function setColumns ( array $columns ) : void |
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{ |
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$this->columns = $columns; |
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} |
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/** |
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* @return array|mixed |
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* @throws JSONPathException |
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* @throws SourceWatcherException |
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*/ |
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public function extract () |
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{ |
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if ( $this->input == null ) { |
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throw new SourceWatcherException( "An input must be provided." ); |
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} |
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$result = array(); |
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if ( !file_exists( $this->input ) ) { |
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throw new SourceWatcherException( "The file " . $this->input . " could not be found." ); |
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} |
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$data = json_decode( file_get_contents( $this->input ), true ); |
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if ( $this->columns ) { |
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try { |
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$jsonPath = new JSONPath( $data ); |
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} catch ( JSONPathException $jsonPathException ) { |
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throw new SourceWatcherException( "Something went wrong trying to extract the JSON file: " . $jsonPathException->getMessage() ); |
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} catch ( Exception $exception ) { |
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throw new SourceWatcherException( "Something unexpected went wrong trying to extract the JSON file: " . $exception->getMessage() ); |
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} |
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foreach ( $this->columns as $key => $path ) { |
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$this->columns[$key] = $jsonPath->find( $path )->data(); |
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} |
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$data = $this->transpose( $this->columns ); |
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} |
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foreach ( $data as $row ) { |
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array_push( $result, new Row( $row ) ); |
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} |
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return $result; |
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} |
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/** |
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* @param $columns |
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* @return array |
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*/ |
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private function transpose ( $columns ) |
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{ |
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$data = []; |
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foreach ( $columns as $column => $items ) { |
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foreach ( $items as $row => $item ) { |
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$data[$row][$column] = $item; |
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} |
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} |
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return $data; |
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} |
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} |
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TheCocoTeam /
source-watcher-core
Loading history...
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.