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<?php |
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/** |
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* JSONText database backend that encapsulates a Postgres-like syntax for JSON querying. |
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* |
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* @package silverstripe-jsontext |
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* @subpackage models |
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* @author Russell Michell <[email protected]> |
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* @see https://www.postgresql.org/docs/9.6/static/functions-json.html |
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*/ |
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namespace PhpTek\JSONText\Backend; |
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use PhpTek\JSONText\Exception\JSONTextInvalidArgsException; |
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class PostgresJSONBackend extends JSONBackend |
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{ |
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/** |
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* An array of acceptable operators for this backend. |
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* |
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* @var array |
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* @config |
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*/ |
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private static $allowed_operators = [ |
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'matchOnInt' => '->', |
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'matchOnStr' => '->>', |
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'matchOnPath' => '#>' |
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]; |
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/** |
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* @inheritdoc |
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*/ |
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View Code Duplication |
public function matchOnInt() |
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{ |
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if (!\is_int($this->operand)) { |
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$msg = 'Non-integer passed to: ' . __FUNCTION__ . '()'; |
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throw new JSONTextInvalidArgsException($msg); |
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} |
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$expr = '$.[' . $this->operand . ']'; |
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$fetch = $this->jsonText->getJSONStore()->get($expr); |
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$vals = \array_values($fetch); |
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if (isset($vals[0])) { |
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return [$this->operand => $vals[0]]; |
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} |
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return []; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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View Code Duplication |
public function matchOnStr() |
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{ |
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if (!\is_string($this->operand)) { |
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$msg = 'Non-string passed to: ' . __FUNCTION__ . '()'; |
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throw new JSONTextInvalidArgsException($msg); |
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} |
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$expr = '$..' . $this->operand; |
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$fetch = $this->jsonText->getJSONStore()->get($expr); |
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$vals = \array_values($fetch); |
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if (isset($vals[0])) { |
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return [$this->operand => $vals[0]]; |
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} |
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return []; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function matchOnPath() |
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{ |
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if (!\is_string($this->operand) || !$this->jsonText->isValidJson($this->operand)) { |
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$msg = 'Invalid JSON passed as operand on RHS.'; |
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throw new JSONTextInvalidArgsException($msg); |
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} |
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$operandAsArray = $this->jsonText->toArray($this->operand); |
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if (!\count($operandAsArray)) { |
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return []; |
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} |
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$keys = \array_keys($operandAsArray); |
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$vals = \array_values($operandAsArray); |
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if (\count($keys) > 1 || \count($vals) > 1) { |
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$msg = 'Sorry. I can\'t handle complex operands.'; |
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throw new JSONTextInvalidArgsException($msg); |
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} |
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$source = $this->jsonText->getStoreAsArray(); |
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$sourceAsIterator = new \RecursiveIteratorIterator( |
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new \RecursiveArrayIterator($source), |
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\RecursiveIteratorIterator::SELF_FIRST |
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); |
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$data = []; |
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foreach ($sourceAsIterator as $sourceKey => $sourceVal) { |
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if ($keys[0] === $sourceKey && is_array($sourceVal) && !empty($sourceVal[$vals[0]])) { |
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$data[] = $sourceVal[$vals[0]]; |
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} |
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} |
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return $data; |
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} |
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} |
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phptek /
silverstripe-jsontext
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This check marks private properties in classes that are never used. Those properties can be removed.