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105 lines (96 loc) · 3.21 KB
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<?php declare(strict_types=1);
/*
* This file is part of the CleverAge/ProcessBundle package.
*
* Copyright (C) 2017-2021 Clever-Age
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace CleverAge\ProcessBundle\Task;
use CleverAge\ProcessBundle\Model\ProcessState;
use Symfony\Component\OptionsResolver\OptionsResolver;
/**
* Split a single line into multiple lines based on multiple columns and split characters.
*
* For each input, it will take each value from columns referenced by `split_columns`, split it with `split_character`,
* and for each part, produce an output item that will contain all data from input + a column with the key from `join_column` containing the current part.
*
* This might produce more output than input, with semi-duplicated lines.
*
* ##### Task or Transformer reference
*
* * **Service**: `CleverAge\ProcessBundle\Task\SplitJoinLineTask`
* * **Iterable task**
* * **Input**: `array`, description
* * **Output**: `type`, description
*
* ##### Options
*
* * `split_columns` (`array`, _required_): the list of properties to split
* * `join_column` (`string`, _required_): the name of the property that will be included in the output, containing a part of a split value
* * `split_character` (`string`, _defaults to_ `,`): the delimiter for split values
*
* @author Vincent Chalnot <vchalnot@clever-age.com>
*/
class SplitJoinLineTask extends AbstractIterableOutputTask
{
/**
* {@inheritDoc}
* @internal
*/
public function next(ProcessState $state): bool
{
$valid = parent::next($state);
if (!$valid) {
$this->iterator = null;
}
return $valid;
}
/**
* {@inheritDoc}
* @internal
*/
protected function configureOptions(OptionsResolver $resolver): void
{
$resolver->setRequired(
[
'split_columns',
'join_column',
]
);
$resolver->setAllowedTypes('split_columns', ['array']);
$resolver->setAllowedTypes('join_column', ['string']);
$resolver->setDefaults(
[
'split_character' => ',',
]
);
}
/**
* {@inheritDoc}
* @internal
*/
protected function initializeIterator(ProcessState $state): \Iterator
{
$originalLine = $state->getInput();
$options = $this->getOptions($state);
$lineCopy = $originalLine;
foreach ($options['split_columns'] as $splitColumn) {
unset($lineCopy[$splitColumn]);
}
$outputLines = [];
foreach ($options['split_columns'] as $column) {
if (!array_key_exists($column, $originalLine)) {
throw new \UnexpectedValueException("Missing column {$column}");
}
$columnValues = explode($options['split_character'], $originalLine[$column]);
foreach ($columnValues as $columnValue) {
$outputLine = $lineCopy;
$outputLine[$options['join_column']] = $columnValue;
$outputLines[] = $outputLine;
}
}
return new \ArrayIterator($outputLines);
}
}