The last-pushed operation is executed FIRST! (LIFO)
Should only be called inside an operation.
| public pushOperation ( string $operationName, array $arguments ) | ||
| $operationName | string | |
| $arguments | array | |
/**
* {@inheritdoc}
*
* @param FlowQuery $flowQuery the FlowQuery object
* @param array $arguments the filter arguments
* @return void|boolean
*/
public function evaluate(FlowQuery $flowQuery, array $arguments)
{
if (count($arguments) == 0) {
return count($flowQuery->getContext()) > 0;
} else {
$flowQuery->pushOperation('is', []);
$flowQuery->pushOperation('filter', $arguments);
}
}
/**
* {@inheritdoc}
*
* @param FlowQuery $flowQuery the FlowQuery object
* @param array $arguments the arguments for this operation
* @return void
*/
public function evaluate(FlowQuery $flowQuery, array $arguments)
{
$output = array();
$outputNodePaths = array();
$until = array();
foreach ($flowQuery->getContext() as $contextNode) {
$nextNodes = $this->getNextForNode($contextNode);
if (isset($arguments[0]) && !empty($arguments[0])) {
$untilQuery = new FlowQuery($nextNodes);
$untilQuery->pushOperation('filter', array($arguments[0]));
$until = $untilQuery->get();
}
if (isset($until[0]) && !empty($until[0])) {
$nextNodes = $this->getNodesUntil($nextNodes, $until[0]);
}
if (is_array($nextNodes)) {
foreach ($nextNodes as $nextNode) {
if ($nextNode !== null && !isset($outputNodePaths[$nextNode->getPath()])) {
$outputNodePaths[$nextNode->getPath()] = true;
$output[] = $nextNode;
}
}
}
}
$flowQuery->setContext($output);
if (isset($arguments[1]) && !empty($arguments[1])) {
$flowQuery->pushOperation('filter', array($arguments[1]));
}
}
/**
* {@inheritdoc}
*
* @param FlowQuery $flowQuery the FlowQuery object
* @param array $arguments the arguments for this operation
* @return void
*/
public function evaluate(FlowQuery $flowQuery, array $arguments)
{
$output = array();
$outputNodePaths = array();
foreach ($flowQuery->getContext() as $contextNode) {
$siteNode = $contextNode->getContext()->getCurrentSiteNode();
$parentNodes = $this->getParents($contextNode, $siteNode);
if (isset($arguments[0]) && !empty($arguments[0] && isset($parentNodes[0]))) {
$untilQuery = new FlowQuery(array($parentNodes[0]));
$untilQuery->pushOperation('closest', array($arguments[0]));
$until = $untilQuery->get();
}
if (isset($until) && is_array($until) && !empty($until) && isset($until[0])) {
$parentNodes = $this->getNodesUntil($parentNodes, $until[0]);
}
if (is_array($parentNodes)) {
foreach ($parentNodes as $parentNode) {
if ($parentNode !== null && !isset($outputNodePaths[$parentNode->getPath()])) {
$outputNodePaths[$parentNode->getPath()] = true;
$output[] = $parentNode;
}
}
}
}
$flowQuery->setContext($output);
if (isset($arguments[1]) && !empty($arguments[1])) {
$flowQuery->pushOperation('filter', $arguments[1]);
}
}
/**
* {@inheritdoc}
*
* @param FlowQuery $flowQuery the FlowQuery object
* @param array $arguments the arguments for this operation
* @return void
*/
public function evaluate(FlowQuery $flowQuery, array $arguments)
{
if (!isset($arguments[0]) || empty($arguments[0])) {
throw new FlowQueryException('closest() requires a filter argument', 1332492263);
}
$output = array();
foreach ($flowQuery->getContext() as $contextNode) {
$contextNodeQuery = new FlowQuery(array($contextNode));
$contextNodeQuery->pushOperation('first', array());
$contextNodeQuery->pushOperation('filter', $arguments);
$parentsQuery = new FlowQuery(array($contextNode));
$contextNodeQuery->pushOperation('add', array($parentsQuery->parents($arguments[0])->get()));
foreach ($contextNodeQuery as $result) {
$output[$result->getPath()] = $result;
}
}
$flowQuery->setContext(array_values($output));
}
/**
* {@inheritdoc}
*
* @param FlowQuery $flowQuery the FlowQuery object
* @param array $arguments the arguments for this operation
* @return void
*/
public function evaluate(FlowQuery $flowQuery, array $arguments)
{
$output = array();
$outputNodePaths = array();
foreach ($flowQuery->getContext() as $contextNode) {
$prevNode = $this->getPrevForNode($contextNode);
if ($prevNode !== null && !isset($outputNodePaths[$prevNode->getPath()])) {
$outputNodePaths[$prevNode->getPath()] = true;
$output[] = $prevNode;
}
}
$flowQuery->setContext($output);
if (isset($arguments[0]) && !empty($arguments[0])) {
$flowQuery->pushOperation('filter', $arguments);
}
}
/**
* {@inheritdoc}
*
* @param FlowQuery $flowQuery
* @param array $arguments
* @return void
*/
public function evaluate(FlowQuery $flowQuery, array $arguments)
{
$subject = $arguments[0];
if (!isset($subject) || empty($subject)) {
$flowQuery->setContext(array());
return;
}
$filteredContext = array();
$context = $flowQuery->getContext();
if (is_string($subject)) {
foreach ($context as $contextElement) {
$contextElementQuery = new FlowQuery(array($contextElement));
$contextElementQuery->pushOperation('children', $arguments);
if ($contextElementQuery->count() > 0) {
$filteredContext[] = $contextElement;
}
}
} else {
if ($subject instanceof FlowQuery) {
$elements = $subject->get();
} elseif ($subject instanceof \Traversable) {
$elements = iterator_to_array($subject);
} elseif (is_object($subject)) {
$elements = array($subject);
} elseif (is_array($subject)) {
$elements = $subject;
} else {
throw new FizzleException('supplied argument for has operation not supported', 1332489625);
}
foreach ($elements as $element) {
if ($element instanceof NodeInterface) {
$parentsQuery = new FlowQuery(array($element));
/** @var NodeInterface $parent */
foreach ($parentsQuery->parents(array())->get() as $parent) {
/** @var NodeInterface $contextElement */
foreach ($context as $contextElement) {
if ($contextElement->getIdentifier() === $parent->getIdentifier()) {
$filteredContext[] = $contextElement;
}
}
}
}
}
$filteredContext = array_unique($filteredContext);
}
$flowQuery->setContext($filteredContext);
}
/**
* {@inheritdoc}
*
* @param FlowQuery $flowQuery the FlowQuery object
* @param array $arguments the arguments for this operation
* @return void
*/
public function evaluate(FlowQuery $flowQuery, array $arguments)
{
$output = array();
$outputNodePaths = array();
foreach ($flowQuery->getContext() as $contextNode) {
/** @var NodeInterface $contextNode */
$siteNode = $contextNode->getContext()->getCurrentSiteNode();
while ($contextNode !== $siteNode && $contextNode->getParent() !== null) {
$contextNode = $contextNode->getParent();
if (!isset($outputNodePaths[$contextNode->getPath()])) {
$output[] = $contextNode;
$outputNodePaths[$contextNode->getPath()] = true;
}
}
}
$flowQuery->setContext($output);
if (isset($arguments[0]) && !empty($arguments[0])) {
$flowQuery->pushOperation('filter', $arguments);
}
}
/**
* {@inheritdoc}
*
* @param FlowQuery $flowQuery the FlowQuery object
* @param array $arguments the arguments for this operation
* @return void
*/
public function evaluate(FlowQuery $flowQuery, array $arguments)
{
$output = array();
$outputNodePaths = array();
/** @var NodeInterface $contextNode */
foreach ($flowQuery->getContext() as $contextNode) {
$outputNodePaths[$contextNode->getPath()] = true;
}
foreach ($flowQuery->getContext() as $contextNode) {
$parentNode = $contextNode->getParent();
if ($parentNode instanceof NodeInterface) {
foreach ($parentNode->getChildNodes() as $childNode) {
if (!isset($outputNodePaths[$childNode->getPath()])) {
$output[] = $childNode;
$outputNodePaths[$childNode->getPath()] = true;
}
}
}
}
$flowQuery->setContext($output);
if (isset($arguments[0]) && !empty($arguments[0])) {
$flowQuery->pushOperation('filter', $arguments);
}
}
/**
* Optimize for typical use cases, filter by node name and filter
* by NodeType (instanceof). These cases are now optimized and will
* only load the nodes that match the filters.
*
* @param FlowQuery $flowQuery
* @param array $parsedFilter
* @return boolean
*/
protected function earlyOptimizationOfFilters(FlowQuery $flowQuery, array $parsedFilter)
{
$optimized = false;
$output = array();
$outputNodePaths = array();
foreach ($parsedFilter['Filters'] as $filter) {
$instanceOfFilters = array();
$attributeFilters = array();
if (isset($filter['AttributeFilters'])) {
foreach ($filter['AttributeFilters'] as $attributeFilter) {
if ($attributeFilter['Operator'] === 'instanceof' && $attributeFilter['Identifier'] === null) {
$instanceOfFilters[] = $attributeFilter;
} else {
$attributeFilters[] = $attributeFilter;
}
}
}
// Only apply optimization if there's a property name filter or a instanceof filter or another filter already did optimization
if (isset($filter['PropertyNameFilter']) || isset($filter['PathFilter']) || count($instanceOfFilters) > 0 || $optimized === true) {
$optimized = true;
$filteredOutput = array();
$filteredOutputNodePaths = array();
// Optimize property name filter if present
if (isset($filter['PropertyNameFilter']) || isset($filter['PathFilter'])) {
$nodePath = isset($filter['PropertyNameFilter']) ? $filter['PropertyNameFilter'] : $filter['PathFilter'];
/** @var NodeInterface $contextNode */
foreach ($flowQuery->getContext() as $contextNode) {
$childNode = $contextNode->getNode($nodePath);
if ($childNode !== null && !isset($filteredOutputNodePaths[$childNode->getPath()])) {
$filteredOutput[] = $childNode;
$filteredOutputNodePaths[$childNode->getPath()] = true;
}
}
} elseif (count($instanceOfFilters) > 0) {
// Optimize node type filter if present
$allowedNodeTypes = array_map(function ($instanceOfFilter) {
return $instanceOfFilter['Operand'];
}, $instanceOfFilters);
/** @var NodeInterface $contextNode */
foreach ($flowQuery->getContext() as $contextNode) {
/** @var NodeInterface $childNode */
foreach ($contextNode->getChildNodes(implode($allowedNodeTypes, ',')) as $childNode) {
if (!isset($filteredOutputNodePaths[$childNode->getPath()])) {
$filteredOutput[] = $childNode;
$filteredOutputNodePaths[$childNode->getPath()] = true;
}
}
}
}
// Apply attribute filters if present
if (isset($filter['AttributeFilters'])) {
$attributeFilters = array_reduce($filter['AttributeFilters'], function ($filters, $attributeFilter) {
return $filters . $attributeFilter['text'];
});
$filteredFlowQuery = new FlowQuery($filteredOutput);
$filteredFlowQuery->pushOperation('filter', array($attributeFilters));
$filteredOutput = $filteredFlowQuery->get();
}
// Add filtered nodes to output
foreach ($filteredOutput as $filteredNode) {
if (!isset($outputNodePaths[$filteredNode->getPath()])) {
$output[] = $filteredNode;
}
}
}
}
if ($optimized === true) {
$flowQuery->setContext($output);
}
return $optimized;
}
/**
* {@inheritdoc}
*
* @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]) || empty($arguments[0])) {
return;
}
$result = array();
$selectorAndFilter = $arguments[0];
$parsedFilter = null;
$parsedFilter = FizzleParser::parseFilterGroup($selectorAndFilter);
if (isset($parsedFilter['Filters']) && $this->hasOnlyInstanceOfFilters($parsedFilter['Filters'])) {
$nodeTypes = array();
foreach ($parsedFilter['Filters'] as $filter) {
$nodeTypes[] = $filter['AttributeFilters'][0]['Operand'];
}
/** @var NodeInterface $contextNode */
foreach ($context as $contextNode) {
$result = array_merge($result, $this->nodeDataRepository->findByParentAndNodeTypeInContext($contextNode->getPath(), implode(',', $nodeTypes), $contextNode->getContext(), true));
}
} else {
foreach ($parsedFilter['Filters'] as $filter) {
$filterResults = array();
$generatedNodes = false;
if (isset($filter['IdentifierFilter'])) {
if (!preg_match(UuidValidator::PATTERN_MATCH_UUID, $filter['IdentifierFilter'])) {
throw new FlowQueryException('find() requires a valid identifier', 1332492263);
}
/** @var NodeInterface $contextNode */
foreach ($context as $contextNode) {
$filterResults = array($contextNode->getContext()->getNodeByIdentifier($filter['IdentifierFilter']));
}
$generatedNodes = true;
} elseif (isset($filter['PropertyNameFilter']) || isset($filter['PathFilter'])) {
$nodePath = isset($filter['PropertyNameFilter']) ? $filter['PropertyNameFilter'] : $filter['PathFilter'];
foreach ($context as $contextNode) {
$node = $contextNode->getNode($nodePath);
if ($node !== null) {
array_push($filterResults, $node);
}
}
$generatedNodes = true;
}
if (isset($filter['AttributeFilters']) && $filter['AttributeFilters'][0]['Operator'] === 'instanceof') {
foreach ($context as $contextNode) {
$filterResults = array_merge($filterResults, $this->nodeDataRepository->findByParentAndNodeTypeInContext($contextNode->getPath(), $filter['AttributeFilters'][0]['Operand'], $contextNode->getContext(), true));
}
unset($filter['AttributeFilters'][0]);
$generatedNodes = true;
}
if (isset($filter['AttributeFilters']) && count($filter['AttributeFilters']) > 0) {
if (!$generatedNodes) {
throw new FlowQueryException('find() needs an identifier, path or instanceof filter for the first filter part', 1436884196);
}
$filterQuery = new FlowQuery($filterResults);
foreach ($filter['AttributeFilters'] as $attributeFilter) {
$filterQuery->pushOperation('filter', array($attributeFilter['text']));
}
$filterResults = $filterQuery->get();
}
$result = array_merge($result, $filterResults);
}
}
$flowQuery->setContext(array_unique($result));
}
