94 lines
2.7 KiB
PHP
94 lines
2.7 KiB
PHP
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<?php
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declare(strict_types=1);
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/**
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* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
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* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
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*
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* Licensed under The MIT License
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* For full copyright and license information, please see the LICENSE.txt
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
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* @link https://cakephp.org CakePHP(tm) Project
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* @since 4.0.3
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* @license https://opensource.org/licenses/mit-license.php MIT License
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*/
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namespace Cake\Database;
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use Cake\Database\Expression\FunctionExpression;
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/**
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* Responsible for compiling a Query object into its SQL representation
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* for Postgres
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*
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* @internal
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*/
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class PostgresCompiler extends QueryCompiler
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{
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/**
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* Always quote aliases in SELECT clause.
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*
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* Postgres auto converts unquoted identifiers to lower case.
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*
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* @var bool
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*/
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protected $_quotedSelectAliases = true;
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/**
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* @inheritDoc
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*/
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protected $_templates = [
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'delete' => 'DELETE',
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'where' => ' WHERE %s',
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'group' => ' GROUP BY %s',
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'order' => ' %s',
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'limit' => ' LIMIT %s',
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'offset' => ' OFFSET %s',
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'epilog' => ' %s',
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];
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/**
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* Helper function used to build the string representation of a HAVING clause,
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* it constructs the field list taking care of aliasing and
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* converting expression objects to string.
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*
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* @param array $parts list of fields to be transformed to string
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* @param \Cake\Database\Query $query The query that is being compiled
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* @param \Cake\Database\ValueBinder $binder Value binder used to generate parameter placeholder
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* @return string
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*/
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protected function _buildHavingPart($parts, $query, $binder)
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{
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$selectParts = $query->clause('select');
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foreach ($selectParts as $selectKey => $selectPart) {
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if (!$selectPart instanceof FunctionExpression) {
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continue;
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}
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foreach ($parts as $k => $p) {
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if (!is_string($p)) {
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continue;
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}
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preg_match_all(
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'/\b' . trim($selectKey, '"') . '\b/i',
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$p,
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$matches
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);
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if (empty($matches[0])) {
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continue;
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}
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$parts[$k] = preg_replace(
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['/"/', '/\b' . trim($selectKey, '"') . '\b/i'],
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['', $selectPart->sql($binder)],
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$p
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);
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}
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}
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return sprintf(' HAVING %s', implode(', ', $parts));
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}
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}
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