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<?php declare(strict_types=1); |
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/** |
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* ___ _ _ |
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* | _ \__ _| |_ __ _| |__ __ _ ___ ___ |
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* | _/ _` | _/ _` | '_ \/ _` (_-</ -_) |
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* |_| \__,_|\__\__,_|_.__/\__,_/__/\___| |
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* |
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* This file is part of Kristuff\Patabase. |
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* (c) Kristuff <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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* |
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* @version 1.0.1 |
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* @copyright 2017-2022 Christophe Buliard |
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*/ |
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namespace Kristuff\Patabase\Query; |
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use Kristuff\Patabase\Query; |
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use Kristuff\Patabase\Query\InsertBase; |
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/** |
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* Class Update |
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* |
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* Represents an [UPDATE] SQL query |
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* |
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* UPDATE [tablename] |
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* SET [column/values] |
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* WHERE [conditions] |
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*/ |
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class Update extends InsertBase |
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{ |
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/** |
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* Increment columns list |
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* |
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* @access private |
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* @var array |
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*/ |
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private $incrementColumns = array(); |
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/** |
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* Decrement columns list |
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* |
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* @access private |
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* @var array |
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*/ |
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private $decrementColumns = array(); |
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/** |
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* Get a the SQL UPDATE columns statement |
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* |
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* @access private |
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* @return string |
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*/ |
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private function sqlColumns(): string |
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{ |
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$columns = array(); |
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foreach ($this->parameters as $key => $val) { |
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$arg = ':_' . str_replace('.', '_', $key); |
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$columns[] = $this->escape($key) . ' =' .$arg; |
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$this->pdoParameters[$arg] = $val; |
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} |
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foreach ($this->incrementColumns as $key => $val) { |
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$columns[] = $this->escape($key) . ' =' . $this->escape($key) . '+' .$val ; |
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} |
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foreach ($this->decrementColumns as $key => $val) { |
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$columns[] = $this->escape($key) . ' =' . $this->escape($key) . '-' .$val ; |
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} |
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return implode(', ', $columns); |
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} |
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/** |
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* Get a WHERE statement object |
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* |
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* @access public |
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* @return Where |
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*/ |
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public function where(): Where |
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{ |
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if (!isset($this->where)){ |
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$this->where = new Query\Where($this, $this->driver); |
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} |
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return $this->where; |
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} |
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/** |
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* Add a WHERE column = value condition |
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* It's an alias for ->where()->equal($column, $value) |
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* |
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* @access public |
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* @param string $column The column name |
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* @param mixed $value The condition value |
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* |
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* @return $this |
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*/ |
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public function whereEqual(string $column, $value) |
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{ |
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$this->where()->equal($column, $value); |
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return $this; |
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} |
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/** |
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* Increment a column this given value |
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* |
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* @access public |
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* @param string $column The column name, could be Table.ColumnName format |
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* @param int $value The increment value. Default is 1. |
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* |
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* @return $this |
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*/ |
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public function increment(string $column, int $value = 1) |
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{ |
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$this->incrementColumns[$column] = $value; |
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return $this; |
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} |
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/** |
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* Decrement a column this given value |
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* |
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* @access public |
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* @param string $column The column name, could be Table.ColumnName format |
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* @param int $value The decrement value. Default is 1. |
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* |
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* @return $this |
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*/ |
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public function decrement(string $column, int $value = 1) |
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{ |
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$this->decrementColumns[$column] = $value; |
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return $this; |
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} |
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/** |
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* Build the SQL UPDATE query |
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* |
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* @access public |
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* @return string |
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*/ |
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public function sql(): string |
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{ |
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$sqlWhere = (isset($this->where)) ? $this->where->sql() : ''; |
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$sqlTableName = $this->escape($this->tableName); |
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return trim(sprintf('UPDATE %s SET %s %s', |
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$sqlTableName, |
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$this->sqlColumns(), |
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$sqlWhere |
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)); |
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} |
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} |
kristuff /
patabase
