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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright © 2008-2011 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\sphinx;
use yii\base\Object;
use yii\base\InvalidParamException;
/**
* IndexSchema represents the metadata of a Sphinx index.
*
* @property array $columnNames List of column names. This property is read-only.
*
* @author Paul Klimov <klimov.paul@gmail.com>
* @since 2.0
*/
class IndexSchema extends Object
{
/**
* @var string name of the schema that this index belongs to.
*/
public $schemaName;
/**
* @var string name of this index.
*/
public $name;
/**
* @var string[] primary keys of this index.
*/
public $primaryKey = [];
/**
* @var ColumnSchema[] column metadata of this index. Each array element is a [[ColumnSchema]] object, indexed by column names.
*/
public $columns = [];
/**
* Gets the named column metadata.
* This is a convenient method for retrieving a named column even if it does not exist.
* @param string $name column name
* @return ColumnSchema metadata of the named column. Null if the named column does not exist.
*/
public function getColumn($name)
{
return isset($this->columns[$name]) ? $this->columns[$name] : null;
}
/**
* Returns the names of all columns in this table.
* @return array list of column names
*/
public function getColumnNames()
{
return array_keys($this->columns);
}
/**
* Manually specifies the primary key for this table.
* @param string|array $keys the primary key (can be composite)
* @throws InvalidParamException if the specified key cannot be found in the table.
*/
public function fixPrimaryKey($keys)
{
if (!is_array($keys)) {
$keys = [$keys];
}
$this->primaryKey = $keys;
foreach ($this->columns as $column) {
$column->isPrimaryKey = false;
}
foreach ($keys as $key) {
if (isset($this->columns[$key])) {
$this->columns[$key]->isPrimaryKey = true;
} else {
throw new InvalidParamException("Primary key '$key' cannot be found in index '{$this->name}'.");
}
}
}
}