public function remove(Recommendation $recommendation)
{
if (!array_key_exists($recommendation->item()->identity(), $this->recommendations)) {
return;
}
unset($this->recommendations[$recommendation->item()->identity()]);
}
public function prepareQuery(NodeInterface $input, Recommendation $recommendation, CypherAwarePostProcessor $postProcessor)
{
$query = 'MATCH (input), (reco) WHERE id(input) = {idInput} AND id(reco) = {idReco}' . PHP_EOL;
$query .= $postProcessor->query();
$parameters = ['idInput' => $input->identity(), 'idReco' => $recommendation->item()->identity()];
$tag = sprintf('post_process_%s_%d', $postProcessor->name(), $recommendation->item()->identity());
$this->stack->push($query, $parameters, $tag);
}
public final function buildQuery(NodeInterface $input, Recommendation $recommendation)
{
$relationshipPatterns = [Direction::BOTH => array('-[:%s]-', '-[:%s]-'), Direction::INCOMING => array('<-[:%s]-', '-[:%s]->'), Direction::OUTGOING => array('-[:%s]->', '<-[:%s]-')];
$relPattern = sprintf($relationshipPatterns[$this->relationshipDirection()][0], $this->relationshipType());
$inversedRelPattern = sprintf($relationshipPatterns[$this->relationshipDirection()][1], $this->relationshipType());
$query = 'MATCH (input) WHERE id(input) = {inputId}, (item) WHERE id(item) = {itemId}
MATCH (input)' . $relPattern . '(shared)' . $inversedRelPattern . '(item)
RETURN shared as sharedThing';
return Statement::create($query, ['inputId' => $input->identity(), 'itemId' => $recommendation->item()->identity()]);
}
public function buildQuery(NodeInterface $input, Recommendation $recommendation)
{
$query = 'MATCH (item) WHERE id(item) = {itemId}
RETURN size((item)<-[:RATED]-()) as ratings';
return Statement::create($query, ['itemId' => $recommendation->item()->identity()]);
}
