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<?php |
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/* |
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* This file is part of the ONGR package. |
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* |
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* (c) NFQ Technologies UAB <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace ONGR\ElasticsearchBundle\Mapping; |
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/** |
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* Mapping tool for comparing. |
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*/ |
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class MappingTool |
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{ |
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/** |
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* @var array |
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*/ |
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private $removedTypes = []; |
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/** |
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* @var array |
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*/ |
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private $updatedTypes = []; |
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/** |
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* Compares two mappings and returns true if changes detected. |
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* |
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* @param array $oldMapping |
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* @param array $newMapping |
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* |
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* @return bool |
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*/ |
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public function checkMapping($oldMapping, $newMapping) |
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{ |
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$updated = false; |
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// Find out which types don't exist anymore. |
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$typeDiff = array_diff_key($oldMapping, $newMapping); |
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foreach ($typeDiff as $oldTypeName => $oldType) { |
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$this->removedTypes[] = $oldTypeName; |
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$updated = true; |
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} |
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// Search for differences in types. |
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foreach ($newMapping as $type => $properties) { |
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$diff = null; |
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if (array_key_exists($type, $oldMapping)) { |
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$diff = $this->symDifference($properties, $oldMapping[$type]); |
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} |
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// Empty array type properties hasn't changed, NULL - new type. |
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if ($diff !== [] || $diff === null) { |
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$this->updatedTypes[$type] = $properties; |
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$updated = true; |
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} |
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} |
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return $updated; |
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} |
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/** |
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* Returns symmetric difference. |
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* |
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* @param array $oldMapping |
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* @param array $newMapping |
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* |
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* @return array |
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*/ |
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public function symDifference($oldMapping, $newMapping) |
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{ |
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return array_replace_recursive( |
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$this->recursiveDiff($oldMapping, $newMapping), |
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$this->recursiveDiff($newMapping, $oldMapping) |
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); |
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} |
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/** |
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* Returns type name which has been removed. |
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* |
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* @return array |
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*/ |
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public function getRemovedTypes() |
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{ |
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return $this->removedTypes; |
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} |
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/** |
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* Returns type names with new properties which has been updated. |
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* |
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* @return array |
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*/ |
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public function getUpdatedTypes() |
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{ |
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return $this->updatedTypes; |
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} |
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/** |
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* Recursively computes the difference of arrays. |
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* |
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* @param array $compareFrom |
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* @param array $compareAgainst |
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* |
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* @return array |
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*/ |
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private function recursiveDiff($compareFrom, $compareAgainst) |
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{ |
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$out = []; |
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foreach ($compareFrom as $mKey => $mValue) { |
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if (array_key_exists($mKey, $compareAgainst)) { |
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if (is_array($mValue)) { |
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$aRecursiveDiff = $this->recursiveDiff($mValue, $compareAgainst[$mKey]); |
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if (count($aRecursiveDiff)) { |
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$out[$mKey] = $aRecursiveDiff; |
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} |
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} else { |
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if ($mValue != $compareAgainst[$mKey]) { |
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$out[$mKey] = $mValue; |
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} |
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} |
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} else { |
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$out[$mKey] = $mValue; |
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} |
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} |
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// Check for empty arrays. |
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foreach ($out as $key => $element) { |
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if ($this->countRecursiveScalars($element) == 0) { |
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unset($out[$key]); |
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} |
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} |
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return $out; |
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} |
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/** |
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* Counts scalar values recursively in array. |
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* |
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* @param mixed $array |
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* |
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* @return int |
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*/ |
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private function countRecursiveScalars($array) |
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{ |
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$count = 0; |
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if (!is_array($array)) { |
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return 1; |
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} |
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foreach ($array as $element) { |
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if (is_array($element)) { |
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$count += $this->countRecursiveScalars($element); |
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} else { |
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$count++; |
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} |
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} |
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return $count; |
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} |
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} |
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ongr-io /
ElasticsearchBundle
