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<?php |
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declare(strict_types=1); |
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namespace LaravelFreelancerNL\Aranguent\Query\Concerns; |
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use Illuminate\Database\Query\Builder as IlluminateQueryBuilder; |
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use Illuminate\Database\Query\Expression; |
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use LaravelFreelancerNL\Aranguent\Query\Builder; |
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trait CompilesJoins |
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{ |
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/** |
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* @param $join |
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* @param Builder $query |
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* @return array |
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*/ |
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public function extractTableAndAlias(Builder $query, $join): array |
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{ |
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if ($join->table instanceof Expression) { |
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$tableParts = []; |
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preg_match("/(^.*) as (.*?)$/", $join->table->getValue($query->grammar), $tableParts); |
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$table = $tableParts[1]; |
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$alias = $tableParts[2]; |
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$query->registerTableAlias($join->table, $alias); |
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return [$table, $alias]; |
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} |
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$table = $this->wrapTable($join->table); |
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$alias = $query->generateTableAlias($join->table); |
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$query->registerTableAlias($join->table, $alias); |
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return [$table, $alias]; |
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} |
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/** |
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* Compile the "join" portions of the query. |
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* |
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* @param IlluminateQueryBuilder $query |
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* @param array $joins |
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* @return string |
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*/ |
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protected function compileJoins(IlluminateQueryBuilder $query, $joins) |
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{ |
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return collect($joins)->map(function ($join) use ($query) { |
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return match ($join->type) { |
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'cross' => $this->compileCrossJoin($query, $join), |
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'left' => $this->compileLeftJoin($query, $join), |
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default => $this->compileInnerJoin($query, $join), |
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}; |
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})->implode(' '); |
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} |
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protected function compileCrossJoin(IlluminateQueryBuilder $query, $join) |
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{ |
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assert($query instanceof Builder); |
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$table = $this->wrapTable($join->table); |
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$alias = $query->generateTableAlias($join->table); |
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$query->registerTableAlias($join->table, $alias); |
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return 'FOR ' . $alias . ' IN ' . $table; |
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} |
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protected function compileInnerJoin(IlluminateQueryBuilder $query, $join) |
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{ |
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assert($query instanceof Builder); |
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list($table, $alias) = $this->extractTableAndAlias($query, $join); |
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$filter = $this->compileWheres($join); |
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$aql = 'FOR ' . $alias . ' IN ' . $table; |
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if ($filter) { |
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$aql .= ' ' . $filter; |
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} |
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return $aql; |
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} |
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protected function compileLeftJoin(IlluminateQueryBuilder $query, $join) |
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{ |
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assert($query instanceof Builder); |
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list($table, $alias) = $this->extractTableAndAlias($query, $join); |
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$filter = $this->compileWheres($join); |
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$resultsToJoin = 'FOR ' . $alias . ' IN ' . $table; |
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if ($filter) { |
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$resultsToJoin .= ' ' . $filter; |
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} |
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$resultsToJoin .= ' RETURN ' . $alias; |
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$aql = 'LET ' . $alias . 'List = (' . $resultsToJoin . ')'; |
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$aql .= ' FOR ' . $alias . ' IN (LENGTH(' . $alias . 'List) > 0) ? ' . $alias . 'List : [{}]'; |
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return $aql; |
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} |
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} |
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LaravelFreelancerNL /
laravel-arangodb
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