class-add-index-to-table.php
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<?php
/**
* Abstract class to upgrade a table by adding a column to it.
*
* @package WPML
*/
namespace WPML\Upgrade\Commands;
/**
* Class Add_Index_To_Table
*/
abstract class AddIndexToTable extends \WPML_Upgrade_Run_All {
/**
* Get table name.
*
* @return string
*/
abstract protected function get_table();
/**
* Get index name.
*
* @return string
*/
abstract protected function get_index();
/**
* Get index definition.
*
* @return string
*/
abstract protected function get_index_definition();
/**
* Upgrade schema.
*
* @var \WPML_Upgrade_Schema
*/
private $upgrade_schema;
/**
* Add_Index_To_Table constructor.
*
* @param array $args
*/
public function __construct( array $args ) {
$this->upgrade_schema = $args[0];
}
/**
* Run the table upgrade.
*
* @return bool
*/
protected function run() {
$this->result = false;
if ( $this->upgrade_schema->does_table_exist( $this->get_table() ) ) {
if ( ! $this->upgrade_schema->does_index_exist( $this->get_table(), $this->get_index() ) ) {
$this->result = $this->upgrade_schema->add_index( $this->get_table(), $this->get_index(), $this->get_index_definition() );
} else {
$this->result = true;
}
}
return $this->result;
}
}