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<?php |
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namespace Bdf\Prime\Query\Closure\Parser; |
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use Bdf\Prime\Query\Closure\Filter\AtomicFilter; |
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use Bdf\Prime\Query\Closure\Value\LikeValue; |
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use PhpParser\Node\Arg; |
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use PhpParser\Node\Expr\FuncCall; |
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use PhpParser\Node\VariadicPlaceholder; |
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use RuntimeException; |
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/** |
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* Parse predicate function calls |
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* |
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* Handle the following functions: |
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* - str_contains : perform a LIKE %value% query |
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* - str_starts_with : perform a LIKE value% query |
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* - str_ends_with : perform a LIKE %value query |
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* - in_array : perform an IN query |
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*/ |
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final class FunctionCallParser |
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{ |
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private EntityAccessorParser $entityAccessorParser; |
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private ValueParser $valueParser; |
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/** |
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* Map function name to parser |
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* |
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* @var array<string, callable(Arg[]):AtomicFilter> |
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*/ |
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private array $functions; |
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public function __construct(EntityAccessorParser $entityAccessorParser, ValueParser $valueParser) |
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{ |
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$this->entityAccessorParser = $entityAccessorParser; |
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$this->valueParser = $valueParser; |
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$this->functions = [ |
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'str_contains' => [$this, 'parseStrContains'], |
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'str_starts_with' => [$this, 'parseStartsWith'], |
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'str_ends_with' => [$this, 'parseEndsWith'], |
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'in_array' => [$this, 'parseInArray'], |
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]; |
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} |
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/** |
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* Parse a predicate function call |
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* |
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* @param FuncCall $expr The function call node |
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* |
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* @return AtomicFilter |
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*/ |
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public function parse(FuncCall $expr): AtomicFilter |
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{ |
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$function = $expr->name->toString(); |
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if (!isset($this->functions[$function])) { |
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throw new RuntimeException('Unsupported function call ' . $function . ' in filters. Supported functions are: ' . implode(', ', array_keys($this->functions)) . '.'); |
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} |
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$args = $expr->args; |
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foreach ($args as $arg) { |
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if ($arg instanceof VariadicPlaceholder || $arg->unpack) { |
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throw new RuntimeException('Unsupported unpacking in function call ' . $function . ' in filters.'); |
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} |
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} |
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/** @var Arg[] $args */ |
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return $this->functions[$function]($args); |
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} |
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private function parseStrContains(array $args): AtomicFilter |
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{ |
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return new AtomicFilter( |
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$this->entityAccessorParser->parse($args[0]->value), |
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':like', |
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LikeValue::contains($this->valueParser->parse($args[1]->value)), |
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); |
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} |
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private function parseStartsWith(array $args): AtomicFilter |
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{ |
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return new AtomicFilter( |
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$this->entityAccessorParser->parse($args[0]->value), |
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':like', |
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LikeValue::startsWith($this->valueParser->parse($args[1]->value)), |
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); |
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} |
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private function parseEndsWith(array $args): AtomicFilter |
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{ |
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return new AtomicFilter( |
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$this->entityAccessorParser->parse($args[0]->value), |
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':like', |
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LikeValue::endsWith($this->valueParser->parse($args[1]->value)), |
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); |
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} |
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private function parseInArray(array $args): AtomicFilter |
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{ |
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return new AtomicFilter( |
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$this->entityAccessorParser->parse($args[0]->value), |
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':in', |
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$this->valueParser->parse($args[1]->value), |
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); |
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} |
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} |
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b2pweb /
bdf-prime
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