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<?php |
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namespace LaravelFreelancerNL\Aranguent\Query\Concerns; |
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use Illuminate\Support\Str; |
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use LaravelFreelancerNL\Aranguent\Query\Builder; |
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use LaravelFreelancerNL\FluentAQL\Expressions\FunctionExpression; |
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use LaravelFreelancerNL\FluentAQL\QueryBuilder; |
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trait HasAliases |
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{ |
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protected $tableAliases = []; |
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protected $columnAliases = []; |
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/** |
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* @param string $table |
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* @param string|null $alias |
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* @return string |
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*/ |
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public function registerTableAlias(string $table, string $alias = null): string |
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{ |
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if ($alias == null && stripos($table, ' as ') !== false) { |
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[$table, $alias] = explode(' as ', $table); |
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} |
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if ($alias == null) { |
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$alias = $this->generateTableAlias($table); |
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} |
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$this->tableAliases[$table] = $alias; |
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return $alias; |
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} |
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protected function isTableAlias(string $alias) |
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{ |
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return in_array($alias, $this->tableAliases); |
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} |
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/** |
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* @param $table |
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* @return mixed|null |
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*/ |
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protected function getTableAlias($table) |
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{ |
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if (isset($this->tableAliases[$table])) { |
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return $this->tableAliases[$table]; |
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} |
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return null; |
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} |
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/** |
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* Extract table and alias from sql alias notation (entity AS `alias`) |
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* |
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* @param string $entity |
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* @return array|false|string[] |
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*/ |
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protected function extractAlias(string $entity) |
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{ |
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$results = preg_split("/\sas\s/i", $entity); |
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if (isset($results[1])) { |
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$results[1] = trim($results[1], '`'); |
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} |
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if (! isset($results[1])) { |
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$results[1] = $results[0]; |
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} |
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return $results; |
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} |
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/** |
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* @param $table |
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* @param string $postfix |
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* |
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* @return mixed |
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*/ |
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protected function generateTableAlias($table, $postfix = 'Doc') |
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{ |
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return Str::camel(Str::singular($table)) . $postfix; |
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} |
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protected function replaceTableForAlias($reference): string |
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{ |
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$referenceParts = explode('.', $reference); |
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$first = array_shift($referenceParts); |
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$alias = $this->getTableAlias($first); |
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if ($alias == null) { |
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$alias = $first; |
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} |
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array_unshift($referenceParts, $alias); |
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return implode('.', $referenceParts); |
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} |
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/** |
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* @param string $target |
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* @param string $value |
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* |
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* @return Builder |
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*/ |
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protected function prefixAlias(string $target, string $value): string |
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{ |
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$alias = $this->getTableAlias($target); |
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if (Str::startsWith($value, $alias . '.')) { |
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return $value; |
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} |
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return $alias . '.' . $value; |
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} |
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/** |
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* @param string $column |
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* @param string|null $alias |
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* @return bool |
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*/ |
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public function registerColumnAlias(string $column, string $alias = null): bool |
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{ |
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if (preg_match("/\sas\s/i", $column)) { |
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[$column, $alias] = $this->extractAlias($column); |
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} |
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if (isset($alias)) { |
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$this->columnAliases[$column] = $alias; |
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return true; |
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} |
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return false; |
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} |
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/** |
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* @param $column |
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* @return mixed |
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*/ |
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protected function getColumnAlias(string $column) |
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{ |
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if (isset($this->columnAliases[$column])) { |
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return $this->columnAliases[$column]; |
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} |
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return null; |
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} |
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/** |
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* @param Builder $builder |
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* @param $column |
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* @param $table |
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* @return string |
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*/ |
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protected function normalizeColumn(Builder $builder, $column, $table = null) |
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{ |
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if ($column instanceof QueryBuilder || $column instanceof FunctionExpression) { |
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return $column; |
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} |
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$column = $this->convertColumnId($column); |
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if ((is_string($column) || is_numeric($column)) && key_exists($column, $builder->variables)) { |
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return $column; |
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} |
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if (is_array($builder->groups) && in_array($column, $builder->groups)) { |
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return $column; |
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} |
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if ($table == null) { |
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$table = $builder->from; |
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} |
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// Replace SQL JSON arrow for AQL dot |
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$column = str_replace('->', '.', $column); |
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$references = explode('.', $column); |
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//We check for an existing alias to determine of the first reference is a table. |
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// In which case we replace it with the alias. |
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$references = $this->normalizeColumnReferences($references, $table); |
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return implode('.', $references); |
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} |
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/** |
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* @param $references |
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* @param null $table |
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* @return mixed |
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*/ |
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protected function normalizeColumnReferences($references, $table = null) |
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{ |
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$tableAlias = $this->getTableAlias($references[0]); |
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if (isset($tableAlias)) { |
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$references[0] = $tableAlias; |
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} |
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if ($tableAlias === null && $table != null && ! $this->isTableAlias($references[0])) { |
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$tableAlias = $this->generateTableAlias($table); |
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array_unshift($references, $tableAlias); |
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} |
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return $references; |
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} |
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/** |
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* @param array<mixed>|string $column |
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* @return array<mixed>|string |
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*/ |
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protected function convertColumnId(array|string $column): array|string |
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{ |
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if (is_string($column) || is_array($column)) { |
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$column = $this->convertIdToKey($column); |
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} |
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return $column; |
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} |
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} |
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LaravelFreelancerNL /
laravel-arangodb
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