DataProcessorInterface.php

<?php

namespace Drupal\rules\Context;


/**
 * Interface for Rules data processor plugins.
 */
interface DataProcessorInterface {
    
    /**
     * Process the given value.
     *
     * @param mixed $value
     *   The value to process.
     * @param \Drupal\rules\Context\ExecutionStateInterface $rules_state
     *   The current Rules execution state containing all context variables.
     *
     * @return mixed
     *   The processed value. Since the value can also be a primitive data type
     *   (a string for example) this function must return the value.
     *
     * @throws \Drupal\rules\Exception\EvaluationException
     *   Thrown when the data cannot be processed.
     */
    public function process($value, ExecutionStateInterface $rules_state);

}