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77 lines
2.2 KiB
77 lines
2.2 KiB
13 years ago
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<?php
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/**
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* CDbTableSchema class file.
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @link http://www.yiiframework.com/
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* @copyright Copyright © 2008-2011 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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/**
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* CDbTableSchema is the base class for representing the metadata of a database table.
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*
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* It may be extended by different DBMS driver to provide DBMS-specific table metadata.
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*
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* CDbTableSchema provides the following information about a table:
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* <ul>
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* <li>{@link name}</li>
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* <li>{@link rawName}</li>
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* <li>{@link columns}</li>
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* <li>{@link primaryKey}</li>
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* <li>{@link foreignKeys}</li>
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* <li>{@link sequenceName}</li>
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* </ul>
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @version $Id: CDbTableSchema.php 2799 2011-01-01 19:31:13Z qiang.xue $
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* @package system.db.schema
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* @since 1.0
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*/
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class CDbTableSchema extends CComponent
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{
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/**
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* @var string name of this table.
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*/
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public $name;
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/**
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* @var string raw name of this table. This is the quoted version of table name with optional schema name. It can be directly used in SQLs.
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*/
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public $rawName;
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/**
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* @var string|array primary key name of this table. If composite key, an array of key names is returned.
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*/
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public $primaryKey;
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/**
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* @var string sequence name for the primary key. Null if no sequence.
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*/
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public $sequenceName;
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/**
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* @var array foreign keys of this table. The array is indexed by column name. Each value is an array of foreign table name and foreign column name.
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*/
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public $foreignKeys = array();
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/**
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* @var array column metadata of this table. Each array element is a CDbColumnSchema object, indexed by column names.
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*/
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public $columns = array();
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/**
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* Gets the named column metadata.
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* This is a convenient method for retrieving a named column even if it does not exist.
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* @param string $name column name
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* @return CDbColumnSchema metadata of the named column. Null if the named column does not exist.
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*/
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public function getColumn($name)
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{
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return isset($this->columns[$name]) ? $this->columns[$name] : null;
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}
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/**
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* @return array list of column names
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*/
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public function getColumnNames()
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{
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return array_keys($this->columns);
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}
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}
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