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<?php |
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namespace Netdudes\DataSourceryBundle\Extension; |
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/** |
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* Wraps a definition of a callable defined in an extension, |
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* available to be used in UQL, etc. |
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*/ |
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class UqlFunction implements \JsonSerializable, UqlFunctionInterface |
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{ |
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/** |
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* Instance to which this function/method belongs |
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* |
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* @var UqlExtensionInterface |
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*/ |
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private $instance; |
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/** |
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* Name of the method in the instance where its defined |
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* |
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* @var string |
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*/ |
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private $method; |
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/** |
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* Name by which this function will be known inside UQL |
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* |
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* @var string |
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*/ |
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private $name; |
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/** |
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* @param string $name |
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* @param UqlExtensionInterface $instance |
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* @param string $method |
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*/ |
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public function __construct($name, UqlExtensionInterface $instance, $method) |
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{ |
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$this->instance = $instance; |
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$this->name = $name; |
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$this->method = $method; |
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} |
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/** |
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* @return UqlExtensionInterface |
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*/ |
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public function getInstance() |
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{ |
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return $this->instance; |
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} |
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/** |
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* @return mixed |
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*/ |
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public function getMethod() |
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{ |
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return $this->method; |
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} |
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/** |
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* @return mixed |
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*/ |
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public function getName() |
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{ |
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return $this->name; |
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} |
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/** |
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* Performs the call to the function defined by this FunctionExtension |
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* |
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* @param array $arguments |
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* |
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* @return mixed |
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*/ |
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public function call($arguments) |
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{ |
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return call_user_func_array([$this->getInstance(), $this->getMethod()], $arguments); |
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} |
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/** |
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* Returns a readable string representation of the function, of the standard form: |
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* |
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* functionName(argument1, argument2, [optionalArgument1 = defaultValue, [optionalNullableArgument2]]) |
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* |
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* @return string |
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*/ |
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public function __toString() |
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{ |
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$reflection = new \ReflectionMethod($this->instance, $this->method); |
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$methodParameters = $reflection |
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->getParameters(); |
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$optionalArgumentCount = 0; |
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$splitStringRepresentation = []; |
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foreach ($methodParameters as $parameter) { |
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$optional = $parameter->isOptional(); |
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$name = $parameter->getName(); |
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if ($optional) { |
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$name = '[' . $name; |
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$defaultValue = $parameter->getDefaultValue(); |
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if (!is_null($defaultValue)) { |
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if (is_numeric($defaultValue)) { |
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$defaultValue = intval($defaultValue); |
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} |
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$name .= ' = ' . $defaultValue; |
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} |
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$optionalArgumentCount++; |
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} |
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$splitStringRepresentation[] = $name; |
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} |
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return $this->name . '(' . implode(', ', $splitStringRepresentation) . str_repeat(']', $optionalArgumentCount) . ')'; |
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} |
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/** |
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* (PHP 5 >= 5.4.0)<br/> |
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* Specify data which should be serialized to JSON |
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* |
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* @link http://php.net/manual/en/jsonserializable.jsonserialize.php |
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* @return mixed data which can be serialized by <b>json_encode</b>, |
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* which is a value of any type other than a resource. |
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*/ |
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public function jsonSerialize() |
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{ |
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$json = [ |
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'name' => $this->getName(), |
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'arguments' => [], |
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]; |
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$reflection = new \ReflectionMethod($this->instance, $this->method); |
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$methodParameters = $reflection |
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->getParameters(); |
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foreach ($methodParameters as $parameter) { |
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$isOptional = $parameter->isOptional(); |
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$argument = [ |
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'name' => $parameter->getName(), |
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'optional' => $isOptional, |
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'default' => null, |
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]; |
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if ($isOptional) { |
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$defaultValue = $parameter->getDefaultValue(); |
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if (!is_null($defaultValue)) { |
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if (is_numeric($defaultValue)) { |
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$defaultValue = intval($defaultValue); |
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} |
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$argument['default'] = $defaultValue; |
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} |
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} |
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$json['arguments'][] = $argument; |
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} |
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return $json; |
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} |
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} |
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netdudes /
DataSourceryBundle
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