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<?php |
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/** |
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* |
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* This file is part of Aura for PHP. |
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* |
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* @license http://opensource.org/licenses/bsd-license.php BSD |
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* |
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*/ |
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namespace Aura\SqlQuery\Common; |
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use Aura\SqlQuery\AbstractDmlQuery; |
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/** |
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* |
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* An object for UPDATE queries. |
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* |
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* @package Aura.SqlQuery |
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* |
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*/ |
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class Update extends AbstractDmlQuery implements UpdateInterface |
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{ |
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/** |
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* |
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* The table to update. |
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* |
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* @var string |
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* |
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*/ |
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protected $table; |
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/** |
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* |
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* Sets the table to update. |
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* |
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* @param string $table The table to update. |
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* |
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* @return $this |
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* |
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*/ |
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public function table($table) |
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{ |
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$this->table = $this->quoter->quoteName($table); |
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return $this; |
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} |
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/** |
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* |
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* Builds this query object into a string. |
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* |
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* @return string |
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* |
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*/ |
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protected function build() |
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{ |
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return 'UPDATE' |
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. $this->buildFlags() |
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. $this->buildTable() |
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. $this->buildValuesForUpdate() |
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. $this->buildWhere() |
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. $this->buildOrderBy() |
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. $this->buildLimit() |
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. $this->buildReturning(); |
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} |
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/** |
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* |
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* Builds the table clause. |
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* |
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* @return null |
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* |
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*/ |
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protected function buildTable() |
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{ |
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return " {$this->table}"; |
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} |
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/** |
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* |
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* Adds a WHERE condition to the query by AND. If the condition has |
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* ?-placeholders, additional arguments to the method will be bound to |
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* those placeholders sequentially. |
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* |
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* @param string $cond The WHERE condition. |
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* @param mixed ...$bind arguments to bind to placeholders |
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* |
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* @return $this |
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* |
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*/ |
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public function where($cond) |
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{ |
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$this->addWhere('AND', func_get_args()); |
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return $this; |
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} |
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/** |
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* |
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* Adds a WHERE condition to the query by OR. If the condition has |
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* ?-placeholders, additional arguments to the method will be bound to |
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* those placeholders sequentially. |
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* |
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* @param string $cond The WHERE condition. |
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* @param mixed ...$bind arguments to bind to placeholders |
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* |
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* @return $this |
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* |
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* @see where() |
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* |
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*/ |
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public function orWhere($cond) |
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{ |
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$this->addWhere('OR', func_get_args()); |
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return $this; |
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} |
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/** |
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* |
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* Sets one column value placeholder; if an optional second parameter is |
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* passed, that value is bound to the placeholder. |
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* |
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* @param string $col The column name. |
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* |
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* @return $this |
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* |
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*/ |
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public function col($col) |
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{ |
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return call_user_func_array(array($this, 'addCol'), func_get_args()); |
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} |
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/** |
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* |
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* Sets multiple column value placeholders. If an element is a key-value |
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* pair, the key is treated as the column name and the value is bound to |
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* that column. |
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* |
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* @param array $cols A list of column names, optionally as key-value |
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* pairs where the key is a column name and the value is a bind value for |
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* that column. |
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* |
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* @return $this |
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* |
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*/ |
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public function cols(array $cols) |
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{ |
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return $this->addCols($cols); |
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} |
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/** |
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* |
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* Sets a column value directly; the value will not be escaped, although |
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* fully-qualified identifiers in the value will be quoted. |
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* |
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* @param string $col The column name. |
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* |
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* @param string $value The column value expression. |
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* |
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* @return $this |
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* |
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*/ |
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public function set($col, $value) |
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{ |
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return $this->setCol($col, $value); |
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} |
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/** |
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* |
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* Builds the updated columns and values of the statement. |
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* |
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* @return string |
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* |
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*/ |
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protected function buildValuesForUpdate() |
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{ |
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$values = array(); |
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foreach ($this->col_values as $col => $value) { |
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$values[] = "{$col} = {$value}"; |
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} |
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return PHP_EOL . 'SET' . $this->indentCsv($values); |
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} |
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/** |
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* Clear some part of the query |
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* |
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* @param $part |
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* @return $this |
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*/ |
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public function clear($part) |
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{ |
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// arrays |
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if(in_array($part, array('where'))) |
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{ |
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$this->$part = array(); |
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} |
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// 0 |
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if(in_array($part, array('limit', 'offset'))) |
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{ |
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$this->$part = 0; |
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} |
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// null |
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if(in_array($part, array('table', 'col_values'))) |
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{ |
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unset($this->$part); |
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} |
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return $this; |
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} |
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} |
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