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<?php |
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/** |
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* Copyright (c) 2013-2014 eBay Enterprise, Inc. |
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* |
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* NOTICE OF LICENSE |
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* |
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* This source file is subject to the Open Software License (OSL 3.0) |
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* that is bundled with this package in the file LICENSE.md. |
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* It is also available through the world-wide-web at this URL: |
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* http://opensource.org/licenses/osl-3.0.php |
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* |
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* @copyright Copyright (c) 2013-2014 eBay Enterprise, Inc. (http://www.ebayenterprise.com/) |
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* @license http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0) |
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*/ |
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namespace eBayEnterprise\RetailOrderManagement\Payload; |
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use DateTime; |
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use DOMDocument; |
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use DOMXPath; |
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use eBayEnterprise\RetailOrderManagement\Payload\Payment\TStrings; |
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/** |
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* Generic implementation strategies for things payloads have to do. |
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* |
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* trait TPayload |
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* @package eBayEnterprise\RetailOrderManagement\Payload |
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*/ |
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trait TPayload |
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{ |
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use TStrings; |
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/** @var IPayloadFactory */ |
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protected $payloadFactory; |
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/** @var IPayloadMap */ |
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protected $payloadMap; |
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/** @var ISchemaValidator */ |
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protected $schemaValidator; |
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/** @var IValidatorIterator */ |
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protected $validators; |
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/** @var IPayload */ |
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protected $parentPayload; |
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/** @var array XPath expressions to extract required data from the serialized payload (XML) */ |
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protected $extractionPaths = []; |
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/** @var array */ |
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protected $optionalExtractionPaths = []; |
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/** @var array property/XPath pairs that take boolean values */ |
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protected $booleanExtractionPaths = []; |
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/** @var array pair address lines properties with xpaths for extraction */ |
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protected $addressLinesExtractionMap = []; |
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/** @var array extracting node value and assigned the property as DateTime */ |
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protected $datetimeExtractionPaths = []; |
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/** |
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* @var array property/XPath pairs. if property is a payload, first node matched |
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* will be deserialized by that payload |
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*/ |
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protected $subpayloadExtractionPaths = []; |
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/** @var LoggerInterface enabled PSR-3 logging */ |
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protected $logger; |
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/** @var bool flag to determine to either serialize empty node not or to serialize empty node. */ |
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protected $isSerializeEmptyNode = true; |
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/** |
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* Fill out this payload object with data from the supplied string. |
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* |
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* @throws Exception\InvalidPayload |
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* @param string $serializedPayload |
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* @return $this |
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*/ |
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public function deserialize($serializedPayload) |
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{ |
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// make sure we received a valid serialization of the payload. |
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$this->schemaValidate($serializedPayload); |
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$xpath = $this->getPayloadAsXPath($serializedPayload); |
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foreach ($this->extractionPaths as $property => $path) { |
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$this->$property = $xpath->evaluate($path); |
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} |
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// When optional nodes are not included in the serialized data, |
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// they should not be set in the payload. Fortunately, these |
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// are all string values so no additional type conversion is necessary. |
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foreach ($this->optionalExtractionPaths as $property => $path) { |
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$foundNode = $xpath->query($path)->item(0); |
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if ($foundNode) { |
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$this->$property = $foundNode->nodeValue; |
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} |
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} |
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$this->deserializeDatetime($xpath); |
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// boolean values have to be handled specially |
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foreach ($this->booleanExtractionPaths as $property => $path) { |
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$value = $xpath->evaluate($path); |
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$this->$property = $this->convertStringToBoolean($value); |
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} |
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$this->addressLinesFromXPath($xpath); |
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$this->deserializeLineItems($serializedPayload); |
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foreach ($this->subpayloadExtractionPaths as $property => $path) { |
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$foundNode = $xpath->query($path)->item(0); |
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if ($foundNode && $this->$property instanceof IPayload) { |
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$this->$property->deserialize($foundNode->C14N()); |
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} |
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} |
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$this->deserializeExtra($serializedPayload); |
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// payload is only valid if the unserialized data is also valid |
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$this->validate(); |
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return $this; |
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} |
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/** |
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* Validate the serialized data via the schema validator. |
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* @param string $serializedData |
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* @return $this |
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*/ |
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protected function schemaValidate($serializedData) |
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{ |
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if ($this->schemaValidator) { |
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$this->schemaValidator->validate($serializedData); |
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} |
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return $this; |
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} |
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/** |
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* Load the payload XML into a DOMXPath for querying. |
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* @param string $xmlString |
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* @return \DOMXPath |
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*/ |
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protected function getPayloadAsXPath($xmlString) |
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{ |
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$xpath = new DOMXPath($this->getPayloadAsDoc($xmlString)); |
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$xpath->registerNamespace('x', $this->getXmlNamespace()); |
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return $xpath; |
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} |
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/** |
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* Load the payload XML into a DOMDocument |
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* @param string $xmlString |
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* @return \DOMDocument |
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*/ |
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protected function getPayloadAsDoc($xmlString) |
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{ |
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$d = new DOMDocument(); |
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try { |
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$d->loadXML($xmlString); |
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} catch (\Exception $e) { |
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throw $e; |
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} |
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return $d; |
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} |
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/** |
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* Get Line1 through Line4 for an Address |
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* Find all of the nodes in the address node that |
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* start with 'Line' and add their value to the |
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* proper address lines array |
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* |
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* @param \DOMXPath $domXPath |
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*/ |
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protected function addressLinesFromXPath(\DOMXPath $domXPath) |
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{ |
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foreach ($this->addressLinesExtractionMap as $address) { |
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$lines = $domXPath->query($address['xPath']); |
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$property = $address['property']; |
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$this->$property = $this->addressLinesFromNodeList($lines); |
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} |
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} |
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/** |
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* Get address lines from node list |
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* Return null instead of an empty array |
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* |
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* @param \DOMNodeList |
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* @param string |
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* @return array|null |
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*/ |
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protected function addressLinesFromNodeList(\DOMNodeList $lines) |
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{ |
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$result = []; |
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foreach ($lines as $line) { |
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$result[] = $line->nodeValue; |
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} |
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return $result ?: null; |
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} |
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/** |
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* Additional deserialization of the payload data. May contain any |
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* special case deserialization that cannot be expressed by the supported |
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* deserialization paths. Default implementation is a no-op. Expected to |
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* be overridden by payloads that need it. |
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* |
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* @param string |
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* @return self |
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* @SuppressWarnings(PHPMD.UnusedFormalParameter) |
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*/ |
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protected function deserializeExtra($serializedPayload) |
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{ |
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return $this; |
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} |
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/** |
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* convert line item substrings into line item objects |
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* @param string $serializedPayload |
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* @return self |
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* @SuppressWarnings(PHPMD.UnusedFormalParameter) |
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*/ |
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protected function deserializeLineItems($serializedPayload) |
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{ |
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return $this; |
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} |
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/** |
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* Extract the node and if the value in the node is a non-empty |
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* string value, then assigned the class property to a DateTime object |
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* passing in the extracted value, otherwise assigned it to null. |
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* |
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* @param \DOMXPath $xpath |
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* @return self |
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*/ |
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protected function deserializeDatetime(\DOMXPath $xpath) |
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{ |
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View Code Duplication |
foreach ($this->datetimeExtractionPaths as $property => $path) { |
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$value = $xpath->evaluate($path); |
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$this->$property = $value ? new DateTime($value) : null; |
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} |
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return $this; |
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} |
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/** |
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* Build a new IPayload for the given interface. |
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* |
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* @param string |
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* @return IPayload |
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*/ |
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protected function buildPayloadForInterface($interface) |
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{ |
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return $this->payloadFactory->buildPayload( |
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$this->payloadMap->getConcreteType($interface), |
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$this->payloadMap, |
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$this, |
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$this->logger |
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); |
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} |
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/** |
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* Validate that the payload meets the requirements |
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* for transmission. This can be over and above what |
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* is required for serialization. |
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* |
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* @throws Exception\InvalidPayload |
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*/ |
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public function validate() |
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{ |
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foreach ($this->validators as $validator) { |
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$validator->validate($this); |
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} |
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return $this; |
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} |
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/** |
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* Return the string form of the payload data for transmission. |
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* Validation is implied. |
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* |
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* @throws Exception\InvalidPayload |
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* @return string |
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*/ |
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public function serialize() |
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{ |
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// validate the payload data |
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$this->validate(); |
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$canonicalXml = ''; |
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$contents = $this->serializeContents(); |
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if ($this->isSerializeEmptyNode || $contents) { |
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$xmlString = sprintf('<%s %s>%s</%1$s>', $this->getRootNodeName(), $this->serializeRootAttributes(), $contents); |
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$canonicalXml = $this->getPayloadAsDoc($xmlString)->C14N(); |
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$this->schemaValidate($canonicalXml); |
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} |
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return $canonicalXml; |
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} |
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public function getParentPayload() |
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{ |
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return $this->parentPayload; |
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} |
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protected function getAncestorPayloadOfType($type) |
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{ |
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$pl = $this; |
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while ($pl = $pl->getParentPayload()) { |
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if ($pl instanceof $type) { |
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return $pl; |
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} |
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} |
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return null; |
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} |
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/** |
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* Return the name of the xml root node. |
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* |
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* @return string |
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*/ |
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abstract protected function getRootNodeName(); |
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/** |
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* Serialize Root Attributes |
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*/ |
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protected function serializeRootAttributes() |
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{ |
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$rootAttributes = $this->getRootAttributes(); |
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$qualifyAttributes = function ($name) use ($rootAttributes) { |
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return sprintf('%s="%s"', $name, $this->xmlEncode($rootAttributes[$name])); |
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}; |
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$qualifiedAttributes = array_map($qualifyAttributes, array_keys($rootAttributes)); |
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return implode(' ', $qualifiedAttributes); |
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} |
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/** |
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* XML Namespace of the document. |
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* |
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* @return string |
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*/ |
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abstract protected function getXmlNamespace(); |
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/** |
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* Name, value pairs of root attributes |
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* |
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* @return array |
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*/ |
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protected function getRootAttributes() |
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{ |
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return []; |
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} |
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/** |
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* Serialize the various parts of the payload into XML strings and concatenate them together. |
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* |
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* @return string |
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*/ |
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abstract protected function serializeContents(); |
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/** |
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* Serialize the value as an xml element with the given node name. When |
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* given an empty value, returns an empty string instead of an empty |
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* element. |
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* |
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* @param string |
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* @param mixed |
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* @return string |
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*/ |
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protected function serializeOptionalValue($nodeName, $value) |
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{ |
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return !is_null($value) ? $this->serializeRequiredValue($nodeName, $value) : ''; |
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} |
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/** |
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* Serialize the value as an XML attribute with the given name. When |
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* given an empty value, returns an empty string. |
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* |
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* @param string |
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* @param mixed |
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* @return string |
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*/ |
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protected function serializeOptionalAttribute($attributeName, $value) |
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{ |
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return !is_null($value) ? " $attributeName='$value' " : ''; |
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} |
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/** |
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* Serialize the currency amount as an XML node with the provided name. |
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* When the amount is not set, returns an empty string. |
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* |
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* @param string |
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* @param float |
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* @return string |
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*/ |
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protected function serializeOptionalAmount($nodeName, $amount) |
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{ |
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return !is_null($amount) ? "<$nodeName>{$this->formatAmount($amount)}</$nodeName>" : ''; |
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} |
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/** |
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* Serialize an optional date time value. When a DateTime value is given, |
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|
* serialize the DateTime object as an XML node containing the DateTime |
381
|
|
|
* formatted with the given format. When no DateTime is given, return |
382
|
|
|
* an empty string. |
383
|
|
|
* |
384
|
|
|
* @param string |
385
|
|
|
* @param string |
386
|
|
|
* @param DateTime |
387
|
|
|
* @return string |
388
|
|
|
*/ |
389
|
|
|
protected function serializeOptionalDateValue($nodeName, $format, DateTime $date = null) |
390
|
|
|
{ |
391
|
|
|
return $date ? "<$nodeName>{$date->format($format)}</$nodeName>" : ''; |
392
|
|
|
} |
393
|
|
|
|
394
|
|
|
/** |
395
|
|
|
* Get a new PayloadFactory instance. |
396
|
|
|
* |
397
|
|
|
* @return PayloadFactory |
398
|
|
|
*/ |
399
|
|
|
protected function getNewPayloadFactory() |
400
|
|
|
{ |
401
|
|
|
return new PayloadFactory(); |
402
|
|
|
} |
403
|
|
|
|
404
|
|
|
/** |
405
|
|
|
* Serialize a value with a given name. Value will be XML encoded before |
406
|
|
|
* being serialized. |
407
|
|
|
* |
408
|
|
|
* @param string |
409
|
|
|
* @param string |
410
|
|
|
* @return string |
411
|
|
|
*/ |
412
|
|
|
protected function serializeXmlEncodedValue($name, $value) |
413
|
|
|
{ |
414
|
|
|
return $this->serializeRequiredValue($name, $this->xmlEncode($value)); |
415
|
|
|
} |
416
|
|
|
|
417
|
|
|
/** |
418
|
|
|
* Serialize an optional element containing a string. The value will be |
419
|
|
|
* xml-encoded if is not null. |
420
|
|
|
* |
421
|
|
|
* @param string |
422
|
|
|
* @param string |
423
|
|
|
* @return string |
424
|
|
|
*/ |
425
|
|
|
protected function serializeOptionalXmlEncodedValue($name, $value) |
426
|
|
|
{ |
427
|
|
|
return $this->serializeOptionalValue($name, $this->xmlEncode($value)); |
428
|
|
|
} |
429
|
|
|
|
430
|
|
|
/** |
431
|
|
|
* serialize a required field to an xml string |
432
|
|
|
* |
433
|
|
|
* @param string |
434
|
|
|
* @param string |
435
|
|
|
* @return string |
436
|
|
|
*/ |
437
|
|
|
protected function serializeRequiredValue($name, $value) |
438
|
|
|
{ |
439
|
|
|
return "<$name>$value</$name>"; |
440
|
|
|
} |
441
|
|
|
} |
442
|
|
|
|
PHP Analyzer performs a side-effects analysis of your code. A side-effect is basically anything that might be visible after the scope of the method is left.
Let’s take a look at an example:
If we look at the
getEmail()
method, we can see that it has no side-effect. Whether you call this method or not, no future calls to other methods are affected by this. As such code as the following is useless:On the hand, if we look at the
setEmail()
, this method _has_ side-effects. In the following case, we could not remove the method call: