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<?php |
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namespace LaravelFreelancerNL\Aranguent\Query\Concerns; |
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use Closure; |
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use Illuminate\Database\Eloquent\Builder as EloquentBuilder; |
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use Illuminate\Database\Eloquent\Builder as IlluminateEloquentBuilder; |
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use Illuminate\Database\Eloquent\Relations\Relation; |
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use Illuminate\Database\Query\Builder as IlluminateQueryBuilder; |
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use InvalidArgumentException; |
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use LaravelFreelancerNL\Aranguent\Query\Grammar; |
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trait BuildsSubqueries |
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{ |
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/** |
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* IN SQL subqueries in selects and where's need to return a single value, |
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* whereas subqueries in joins return an object. This variable lets the |
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* compiler know how to return a single value. |
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* |
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* @var bool |
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*/ |
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public bool $returnSingleValue = false; |
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/** |
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* Creates a subquery and parse it. |
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* |
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* @param \Closure|IlluminateQueryBuilder|IlluminateEloquentBuilder|string $query |
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* @return array |
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*/ |
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protected function createSub($query, bool $returnSingleValue = false) |
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{ |
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// If the given query is a Closure, we will execute it while passing in a new |
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// query instance to the Closure. This will give the developer a chance to |
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// format and work with the query before we cast it to a raw SQL string. |
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if ($query instanceof Closure) { |
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$callback = $query; |
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$callback($query = $this->forSubQuery()); |
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} |
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if ($returnSingleValue) { |
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$query->returnSingleValue = $returnSingleValue; |
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} |
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return $this->parseSub($query); |
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} |
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/** |
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* Create a new query instance for sub-query. |
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* |
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* @return \Illuminate\Database\Query\Builder |
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*/ |
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protected function forSubQuery() |
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{ |
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return $this->newQuery(); |
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} |
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protected function hasLimitOfOne(IlluminateQueryBuilder $query) |
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{ |
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if (isset($query->limit) && $query->limit == 1) { |
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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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* Parse the subquery into AQL and bindings. |
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* |
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* @param mixed $query |
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* @return array |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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protected function parseSub($query) |
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{ |
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if ($query instanceof self || $query instanceof EloquentBuilder || $query instanceof Relation) { |
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$this->exchangeTableAliases($query); |
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$this->importBindings($query); |
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assert($this->grammar instanceof Grammar); |
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$queryString = $this->grammar->wrapSubquery($query->toSql()); |
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if ($this->hasLimitOfOne($query)) { |
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$queryString = 'FIRST(' . $queryString . ')'; |
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} |
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return [$queryString, $query->getBindings()]; |
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} elseif (is_string($query)) { |
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return [$query, []]; |
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} else { |
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throw new InvalidArgumentException( |
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'A subquery must be a query builder instance, a Relation, a Closure, or a string.' |
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); |
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} |
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} |
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} |
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LaravelFreelancerNL /
laravel-arangodb
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