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<?php |
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namespace HexMakina\Crudites\Grammar\Query; |
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use HexMakina\Crudites\Grammar\Grammar; |
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use HexMakina\Crudites\Grammar\Deck; |
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use HexMakina\Crudites\Grammar\Clause\Clause; |
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use HexMakina\Crudites\Grammar\Clause\Where; |
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use HexMakina\Crudites\Grammar\Clause\Joins; |
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use HexMakina\Crudites\Grammar\Clause\Join; |
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use HexMakina\Crudites\Grammar\Clause\GroupBy; |
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use HexMakina\Crudites\Grammar\Clause\OrderBy; |
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use HexMakina\Crudites\Grammar\Clause\Limit; |
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class Select extends Query |
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{ |
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// decks handle the list of columns and expressions to be selected |
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private ?Deck $deck = null; |
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public function __construct(array $selection, string $table, $table_alias = null) |
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{ |
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$this->table = $table; |
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$this->alias = $table_alias; |
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$this->selectAlso($selection); |
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} |
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public function statement(): string |
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{ |
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$schema = Grammar::identifier($this->table()); |
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if (!empty($this->alias())) { |
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$schema .= ' ' . Grammar::identifier($this->alias()); |
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} |
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$ret = sprintf('SELECT %s FROM %s', $this->deck, $schema); |
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foreach ( |
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[ |
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Clause::JOINS, |
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Clause::JOIN, |
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Clause::WHERE, |
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Clause::GROUP, |
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Clause::HAVING, |
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Clause::ORDER, |
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Clause::LIMIT |
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] as $clause |
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) { |
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if($this->clause($clause) === null) |
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continue; |
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$ret .= ' ' . $this->clause($clause); |
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} |
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return $ret; |
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} |
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public function tableLabel($forced_value = null) |
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{ |
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return $forced_value ?? $this->table_alias ?? $this->table; |
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} |
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/** |
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* Adds additional columns to the SELECT statement. |
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* |
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* @param array $setter An array of column names to be added to the SELECT statement. |
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* |
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* $setter = [ |
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* 'column_alias' => 'column', |
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* 2 => 'column', |
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* 'table_column_alias' => ['table', 'column'], |
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* 5 => ['table', 'column'], |
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* 'function_alias' => ['GROUP_CONCAT(..)'], |
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* 6 => ['GROUP_CONCAT(..)'], |
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* ]; |
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* |
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* @return self Returns the current instance of the Select class. |
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*/ |
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public function selectAlso(array $setter): self |
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{ |
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if (empty($setter)) |
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throw new \InvalidArgumentException('EMPTY_SETTER_ARRAY'); |
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foreach ($setter as $alias => $column) { |
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if (is_int($alias)) { |
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$alias = null; |
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} |
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if(!isset($this->deck)){ |
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$this->deck = new Deck($column, $alias); |
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} else { |
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$this->deck->add($column, $alias); |
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} |
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} |
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return $this; |
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} |
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public function where(array $predicates): Where |
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{ |
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$where = new Where($predicates); |
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$this->add($where); |
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return $where; |
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} |
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public function join(string $table, ?string $alias=null): Join |
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{ |
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$join = new Join($table, $alias); |
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if($this->clause(Clause::JOINS) === null){ |
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$joins = new Joins([$join]); |
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$this->add($joins); |
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} |
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else{ |
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$this->clause(Clause::JOINS)->add($join); |
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} |
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return $join; |
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} |
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public function groupBy($selected): GroupBy |
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{ |
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$group = new GroupBy($selected); |
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$this->add($group); |
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return $group; |
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} |
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public function orderBy($selected, string $direction): OrderBy |
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{ |
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$order = new OrderBy($selected, $direction); |
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$this->add($order); |
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return $order; |
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} |
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public function limit(int $number, int $offset = 0): Limit |
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{ |
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$limit = new Limit($number, $offset); |
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$this->add($limit); |
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return $limit; |
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} |
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} |
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