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<?php |
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namespace LaravelFreelancerNL\Aranguent\Query\Concerns; |
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use Illuminate\Database\Eloquent\Builder as EloquentBuilder; |
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use Illuminate\Database\Eloquent\Relations\Relation; |
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use InvalidArgumentException; |
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use LaravelFreelancerNL\FluentAQL\Expressions\FunctionExpression; |
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use LaravelFreelancerNL\FluentAQL\QueryBuilder; |
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trait BuildsSubqueries |
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{ |
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/** |
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* Add a subselect expression to the query. |
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* |
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* @param $query |
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* @param string $as |
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* @return $this |
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* |
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*/ |
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public function selectSub($query, $as) |
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{ |
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$query = $this->createSub($query); |
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// Register $as as attribute alias |
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$this->grammar->registerColumnAlias($as, $as); |
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// Set $as as return value |
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$this->columns[] = $as; |
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// let alias = query |
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$this->variables[$as] = $query; |
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return $query; |
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} |
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/** |
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* Parse the subquery into SQL and bindings. |
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* |
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* @param mixed $query |
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* @return array|QueryBuilder |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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protected function parseSub($query) |
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{ |
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if ($query instanceof self || $query instanceof EloquentBuilder || $query instanceof Relation) { |
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$query = $this->prependDatabaseNameIfCrossDatabaseQuery($query); |
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$query->grammar->compileSelect($query); |
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if (isset($query->limit) && $query->limit == 1) { |
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//Return the value, not an array of values |
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return $query->aqb->first($query->aqb); |
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} |
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return $query->aqb; |
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} |
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if ($query instanceof QueryBuilder || $query instanceof FunctionExpression) { |
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return $query; |
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} |
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if (is_string($query)) { |
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return $query; |
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} |
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throw new InvalidArgumentException( |
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'A subquery must be a query builder instance, a Closure, or a string.' |
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); |
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} |
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} |
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LaravelFreelancerNL /
laravel-arangodb
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