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<?php |
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/* |
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* The MIT License |
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* |
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* Copyright 2016 Julien Fastré <[email protected]>. |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in |
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* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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* THE SOFTWARE. |
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*/ |
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namespace PHPHealth\CDA\Elements; |
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use PHPHealth\CDA\ClinicalDocument as CDA; |
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use PHPHealth\CDA\HasClassCode; |
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use PHPHealth\CDA\HasTypeCode; |
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/** |
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* |
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* |
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* @author Julien Fastré <[email protected]> |
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*/ |
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abstract class AbstractElement implements \PHPHealth\CDA\ElementInterface |
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{ |
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/** |
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* get the element tag name |
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* |
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* @return string |
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*/ |
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abstract protected function getElementTag(); |
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/** |
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* create an element with the tag given by self::getElementTag and |
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* apply this element to datatype given by $properties |
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* |
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* @param \DOMDocument $doc |
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* @param string[] $properties the name of the properties to apply on element |
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* @return \DOMElement |
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*/ |
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protected function createElement(\DOMDocument $doc, array $properties = array()) |
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{ |
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/* @var $el DOMElement */ |
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$el = $doc->createElement(CDA::NS_CDA.$this->getElementTag()); |
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if ($this instanceof HasClassCode) { |
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if (! empty($this->getClassCode())) { |
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$el->setAttribute(CDA::NS_CDA.'classCode', $this->getClassCode()); |
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} |
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} |
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if ($this instanceof HasTypeCode) { |
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if (! empty($this->getTypeCode())) { |
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$el->setAttribute(CDA::NS_CDA.'typeCode', $this->getTypeCode()); |
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} |
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} |
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if (count($properties) > 0) { |
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foreach ($properties as $property) { |
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$this->{$property}->setValueToElement($el); |
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} |
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} |
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return $el; |
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} |
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} |
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Let’s take a look at an example:
In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different sub-classes of User which does not have a getDisplayName() method, the code will break.
Available Fixes
Change the type-hint for the parameter:
Add an additional type-check:
Add the method to the parent class: