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94 lines
2.4 KiB
94 lines
2.4 KiB
12 years ago
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<?php
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/**
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* @link http://www.yiiframework.com/
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* @copyright Copyright (c) 2008 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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namespace yii\db\mssql;
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use yii\db\TableSchema;
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/**
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* Schema is the class for retrieving metadata from a MS SQL database (version 2008 and above).
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*
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* @author Timur Ruziev <qiang.xue@gmail.com>
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* @since 2.0
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*/
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class Schema extends \yii\db\Schema
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{
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/**
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* Default schema name to be used.
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*/
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const DEFAULT_SCHEMA = 'dbo';
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/**
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* @var array mapping from physical column types (keys) to abstract column types (values)
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*/
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public $typeMap = array(
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// TODO: mssql driver
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);
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/**
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* @param string $name
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* @return TableSchema
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*/
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public function loadTableSchema($name)
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{
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return null;
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}
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/**
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* Quotes a table name for use in a query.
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* A simple table name has no schema prefix.
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* @param string $name table name.
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* @return string the properly quoted table name.
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*/
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public function quoteSimpleTableName($name)
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{
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return strpos($name, '[') !== false ? $name : '[' . $name . ']';
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}
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/**
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* Quotes a column name for use in a query.
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* A simple column name has no prefix.
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* @param string $name column name.
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* @return string the properly quoted column name.
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*/
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public function quoteSimpleColumnName($name)
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{
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return strpos($name, '[') !== false || $name === '*' ? $name : '[' . $name . ']';
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}
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/**
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* Creates a query builder for the MSSQL database.
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* @return QueryBuilder query builder interface.
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*/
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public function createQueryBuilder()
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{
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return new QueryBuilder($this->db);
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}
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/**
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* Returns all table names in the database.
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* This method should be overridden by child classes in order to support this feature
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* because the default implementation simply throws an exception.
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* @param string $schema the schema of the tables. Defaults to empty string, meaning the current or default schema.
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* @return array all table names in the database. The names have NO the schema name prefix.
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*/
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protected function findTableNames($schema = '')
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{
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if ('' === $schema) {
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$schema = self::DEFAULT_SCHEMA;
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}
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$sql = "SELECT TABLE_NAME FROM [INFORMATION_SCHEMA].[TABLES] WHERE TABLE_SCHEMA = :schema AND TABLE_TYPE = 'BASE TABLE'";
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$names = $this->db->createCommand($sql, array(':schema' => $schema))->queryColumn();
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if (self::DEFAULT_SCHEMA !== $schema) {
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foreach ($names as $index => $name) {
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$names[$index] = $schema . '.' . $name;
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}
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}
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return $names;
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}
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}
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