public function apply($value)
{
// Note: PHP doesn't like $this->callback($value)
$callback = $this->callback;
$result = $callback($value);
return false === is_null($this->chain) ? $this->chain->apply($result) : $result;
}
/**
* @param TransformerInterface $transformer
* @throws \Exception
*/
public function registerTransformer(TransformerInterface $transformer)
{
$id = $transformer->getId();
if (isset($this->transformers[$id])) {
throw new \Exception("Transformer with ID {$id} already exists");
}
$this->transformers[$id] = $transformer;
}
/**
* Transforms the data into one unique format
*
* @return array
*/
public function transform()
{
$originalData = $this->getData();
$transformedData = $this->transformer->transform();
$restData = $this->unsetKeys($originalData, $this->transformer->getSupportedKeys());
$this->checkIfAllValuesWereProceeded($restData, $this->transformer);
return $transformedData;
}
/**
* Applies the defined transformations to a CSV row.
* Called internally by the Reader\CSV for each row, but can also be invoked
* manually outside the processing pipeline.
*
* @param array $value
* @return array
*/
public function apply($value)
{
$resultant = [];
$has_columns_filter = !empty($this->only_columns);
$has_column_mappings = !empty($this->column_maps);
$has_column_names = !empty($this->columns_to_names);
foreach ($value as $id => $value) {
if ($has_columns_filter && !in_array($id, $this->only_columns)) {
continue;
}
$key = $has_column_names && isset($this->columns_to_names[$id]) ? $this->columns_to_names[$id] : $id;
$resultant[$key] = $has_column_mappings && isset($this->column_maps[$id]) ? $this->column_maps[$id]($value) : $value;
}
return false === is_null($this->chain) ? $this->chain->apply($resultant) : $resultant;
}
/**
* load the children collection.
*/
private function load()
{
if ($this->collection == null) {
$this->collection = $this->transformer->getChildren($this->page);
}
}
