Find operation with recursive filtering support and identifier support. Fallback of https://review.typo3.org/#/q/status:open+topic:find-operation,n,z for Neos 1.0. Usage: ${q(site).find('[instanceof TYPO3.Neos.NodeTypes:Text]')} // ${q(site).find('#60216562-0ad9-86ff-0b32-7b7072bcb6b2')}

FindOperation.php

<?php
namespace Moc\Net\TypoScript\FlowQueryOperations;

use TYPO3\Flow\Annotations as Flow;
use TYPO3\Eel\FlowQuery\FlowQuery;
use TYPO3\TYPO3CR\Domain\Repository\NodeDataRepository;

/**
 * Override the built in Neos PropertyOperation so the operation can take a default value
 */
class FindOperation extends \TYPO3\Neos\TypoScript\FlowQueryOperations\FindOperation {

	/**
	 * {@inheritdoc}
	 *
	 * @var integer
	 */
	static protected $priority = 200;

	/**
	 * @Flow\Inject
	 * @var NodeDataRepository
	 */
	protected $nodeDataRepository;

	/**
	 * @Flow\Inject
	 * @var \TYPO3\TYPO3CR\Domain\Factory\NodeFactory
	 */
	protected $nodeFactory;

	/**
	 * {@inheritdoc}
	 * @TODO This will become obsolete with the next official Neos release
	 *
	 * @param FlowQuery $flowQuery the FlowQuery object
	 * @param array $arguments the arguments for this operation
	 * @return void
	 */
	public function evaluate(FlowQuery $flowQuery, array $arguments) {
		$context = $flowQuery->getContext();
		if (!isset($context[0])) {
			return NULL;
		}
		/** @var \TYPO3\TYPO3CR\Domain\Model\NodeInterface $contextNode */
		$contextNode = $context[0];
		$selectorAndFilter = $arguments[0];

		$parsedFilter = \TYPO3\Eel\FlowQuery\FizzleParser::parseFilterGroup($selectorAndFilter);

		if ($selectorAndFilter[0] === '#') {
			$context = $contextNode->getContext();
			$nodeData = $this->nodeDataRepository->findOneByIdentifier(substr($selectorAndFilter, 1), $context->getWorkspace());
			if ($nodeData !== NULL) {
				$node = $this->nodeFactory->createFromNodeData($nodeData, $context);
			}
			$result = array($node);
		} elseif (isset($parsedFilter['Filters'][0]['AttributeFilters']) && $parsedFilter['Filters'][0]['AttributeFilters'][0]['Operator'] === 'instanceof') {
			$nodeTypeFilter = $parsedFilter['Filters'][0]['AttributeFilters'][0]['Operand'];
			$context = $contextNode->getContext();
			$nodeDataElements = $this->nodeDataRepository->findByParentAndNodeType($contextNode->getPath(), $nodeTypeFilter, $context->getWorkspace(), NULL, NULL, ($context->isRemovedContentShown() ? NULL : FALSE), TRUE);
			$result = array();
			foreach ($nodeDataElements as $nodeData) {
				$node =$this->nodeFactory->createFromNodeData($nodeData, $context);
				if ($node !== NULL) {
					$result[] = $node;
				}
			}
		} else {
			$result = array($contextNode->getNode($selectorAndFilter));
		}
		$flowQuery->setContext($result);
	}
}