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<?php |
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namespace Zortje\MySQLKeeper\Database\Table; |
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/** |
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* Class Index |
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* |
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* @package Zortje\MySQLKeeper\Database\Table |
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*/ |
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class Index { |
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/** |
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* @var string |
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*/ |
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private $keyName; |
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/** |
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* @var bool |
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*/ |
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private $unique; |
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/** |
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* @var string[] |
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*/ |
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private $columns; |
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/** |
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* @param string $keyName Index key name |
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* @param bool $unique Index unique |
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* @param string[] $columns Index column names |
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*/ |
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public function __construct($keyName, $unique, $columns) { |
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$this->keyName = $keyName; |
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$this->unique = $unique; |
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$this->columns = $columns; |
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} |
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/** |
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* Get Index key name |
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* |
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* @return string Index key name |
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*/ |
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public function getKeyName() { |
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return $this->keyName; |
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} |
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/** |
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* Is Index primary key |
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* @return bool TRUE if primary key, otherwise FALSE |
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*/ |
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public function isPrimaryKey() { |
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$isPrimaryKey = $this->getKeyName() === 'PRIMARY'; |
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return $isPrimaryKey; |
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} |
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/** |
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* Is Index unique |
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* |
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* @return bool TRUE if unique, otherwise FALSE |
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*/ |
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public function isUnique() { |
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return $this->unique; |
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} |
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/** |
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* Get Index column names |
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* |
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* @return string[] Index column names |
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*/ |
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public function getColumns() { |
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return $this->columns; |
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} |
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/** |
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* Check if given Index is duplicate of this |
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* @param Index $index Index |
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* @return bool TRUE if duplicate, otherwise FALSE |
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*/ |
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public function isDuplicate(Index $index) { |
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/** |
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* Check if columns are the same |
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*/ |
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$duplicate = $this->getColumns() === $index->getColumns(); |
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/** |
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* If indices have different unique status they cant be duplicates |
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*/ |
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if ($this->isUnique() !== $index->isUnique()) { |
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$duplicate = false; |
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} |
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/** |
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* If one of the indicies is the primary key they cant be duplicates |
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*/ |
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if ($this->isPrimaryKey() === true || $index->isPrimaryKey() === true) { |
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$duplicate = false; |
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} |
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return $duplicate; |
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} |
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/** |
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* Check if given columns are equal to this index columns |
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* |
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* @param string[] $columns |
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* |
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* @return bool TRUE if equal, otherwise FALSE |
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*/ |
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public function isColumnsEqual($columns) { |
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$equal = $this->getColumns() === $columns; |
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return $equal; |
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} |
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} |
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zortje /
mysql-keeper
