Added new (clean) yii boilerplate

framework/db/schema/mssql/CMssqlColumnSchema.php

@@ -0,0 +1,88 @@
+<?php
+/**
+ * CMssqlColumnSchema class file.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @author Christophe Boulain <Christophe.Boulain@gmail.com>
+ * @link http://www.yiiframework.com/
+ * @copyright 2008-2013 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+/**
+ * CMssqlColumnSchema class describes the column meta data of a MSSQL table.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @author Christophe Boulain <Christophe.Boulain@gmail.com>
+ * @package system.db.schema.mssql
+ */
+class CMssqlColumnSchema extends CDbColumnSchema
+{
+
+	/**
+	 * Initializes the column with its DB type and default value.
+	 * This sets up the column's PHP type, size, precision, scale as well as default value.
+	 * @param string $dbType the column's DB type
+	 * @param mixed $defaultValue the default value
+	 */
+	public function init($dbType, $defaultValue)
+	{
+		if ($defaultValue=='(NULL)')
+		{
+			$defaultValue=null;
+		}
+		parent::init($dbType, $defaultValue);
+	}
+
+
+	/**
+	 * Extracts the PHP type from DB type.
+	 * @param string $dbType DB type
+	 */
+	protected function extractType($dbType)
+	{
+		if(strpos($dbType,'float')!==false || strpos($dbType,'real')!==false)
+			$this->type='double';
+		elseif(strpos($dbType,'bigint')===false && (strpos($dbType,'int')!==false || strpos($dbType,'smallint')!==false || strpos($dbType,'tinyint')))
+			$this->type='integer';
+		elseif(strpos($dbType,'bit')!==false)
+			$this->type='boolean';
+		else
+			$this->type='string';
+	}
+
+	/**
+	 * Extracts the default value for the column.
+	 * The value is typecasted to correct PHP type.
+	 * @param mixed $defaultValue the default value obtained from metadata
+	 */
+	protected function extractDefault($defaultValue)
+	{
+		if($this->dbType==='timestamp' )
+			$this->defaultValue=null;
+		else
+			parent::extractDefault(str_replace(array('(',')',"'"), '', $defaultValue));
+	}
+
+	/**
+	 * Extracts size, precision and scale information from column's DB type.
+	 * We do nothing here, since sizes and precisions have been computed before.
+	 * @param string $dbType the column's DB type
+	 */
+	protected function extractLimit($dbType)
+	{
+	}
+
+	/**
+	 * Converts the input value to the type that this column is of.
+	 * @param mixed $value input value
+	 * @return mixed converted value
+	 */
+	public function typecast($value)
+	{
+		if($this->type==='boolean')
+			return $value ? 1 : 0;
+		else
+			return parent::typecast($value);
+	}
+}

framework/db/schema/mssql/CMssqlCommandBuilder.php

@@ -0,0 +1,338 @@
+<?php
+/**
+ * CMsCommandBuilder class file.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @author Christophe Boulain <Christophe.Boulain@gmail.com>
+ * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
+ * @link http://www.yiiframework.com/
+ * @copyright 2008-2013 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+/**
+ * CMssqlCommandBuilder provides basic methods to create query commands for tables for Mssql Servers.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @author Christophe Boulain <Christophe.Boulain@gmail.com>
+ * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
+ * @package system.db.schema.mssql
+ */
+class CMssqlCommandBuilder extends CDbCommandBuilder
+{
+	/**
+	 * Creates a COUNT(*) command for a single table.
+	 * Override parent implementation to remove the order clause of criteria if it exists
+	 * @param CDbTableSchema $table the table metadata
+	 * @param CDbCriteria $criteria the query criteria
+	 * @param string $alias the alias name of the primary table. Defaults to 't'.
+	 * @return CDbCommand query command.
+	 */
+	public function createCountCommand($table,$criteria,$alias='t')
+	{
+		$criteria->order='';
+		return parent::createCountCommand($table, $criteria,$alias);
+	}
+
+	/**
+	 * Creates a SELECT command for a single table.
+	 * Override parent implementation to check if an orderby clause if specified when querying with an offset
+	 * @param CDbTableSchema $table the table metadata
+	 * @param CDbCriteria $criteria the query criteria
+	 * @param string $alias the alias name of the primary table. Defaults to 't'.
+	 * @return CDbCommand query command.
+	 */
+	public function createFindCommand($table,$criteria,$alias='t')
+	{
+		$criteria=$this->checkCriteria($table,$criteria);
+		return parent::createFindCommand($table,$criteria,$alias);
+
+	}
+
+	/**
+	 * Creates an UPDATE command.
+	 * Override parent implementation because mssql don't want to update an identity column
+	 * @param CDbTableSchema $table the table metadata
+	 * @param array $data list of columns to be updated (name=>value)
+	 * @param CDbCriteria $criteria the query criteria
+	 * @throws CDbException if no columns are being updated
+	 * @return CDbCommand update command.
+	 */
+	public function createUpdateCommand($table,$data,$criteria)
+	{
+		$criteria=$this->checkCriteria($table,$criteria);
+		$fields=array();
+		$values=array();
+		$bindByPosition=isset($criteria->params[0]);
+		$i=0;
+		foreach($data as $name=>$value)
+		{
+			if(($column=$table->getColumn($name))!==null)
+			{
+				if ($table->sequenceName !== null && $column->isPrimaryKey === true) continue;
+				if ($column->dbType === 'timestamp') continue;
+				if($value instanceof CDbExpression)
+				{
+					$fields[]=$column->rawName.'='.$value->expression;
+					foreach($value->params as $n=>$v)
+						$values[$n]=$v;
+				}
+				elseif($bindByPosition)
+				{
+					$fields[]=$column->rawName.'=?';
+					$values[]=$column->typecast($value);
+				}
+				else
+				{
+					$fields[]=$column->rawName.'='.self::PARAM_PREFIX.$i;
+					$values[self::PARAM_PREFIX.$i]=$column->typecast($value);
+					$i++;
+				}
+			}
+		}
+		if($fields===array())
+			throw new CDbException(Yii::t('yii','No columns are being updated for table "{table}".',
+				array('{table}'=>$table->name)));
+		$sql="UPDATE {$table->rawName} SET ".implode(', ',$fields);
+		$sql=$this->applyJoin($sql,$criteria->join);
+		$sql=$this->applyCondition($sql,$criteria->condition);
+		$sql=$this->applyOrder($sql,$criteria->order);
+		$sql=$this->applyLimit($sql,$criteria->limit,$criteria->offset);
+
+		$command=$this->getDbConnection()->createCommand($sql);
+		$this->bindValues($command,array_merge($values,$criteria->params));
+
+		return $command;
+	}
+
+	/**
+	 * Creates a DELETE command.
+	 * Override parent implementation to check if an orderby clause if specified when querying with an offset
+	 * @param CDbTableSchema $table the table metadata
+	 * @param CDbCriteria $criteria the query criteria
+	 * @return CDbCommand delete command.
+	 */
+	public function createDeleteCommand($table,$criteria)
+	{
+		$criteria=$this->checkCriteria($table, $criteria);
+		return parent::createDeleteCommand($table, $criteria);
+	}
+
+	/**
+	 * Creates an UPDATE command that increments/decrements certain columns.
+	 * Override parent implementation to check if an orderby clause if specified when querying with an offset
+	 * @param CDbTableSchema $table the table metadata
+	 * @param CDbCriteria $counters the query criteria
+	 * @param array $criteria counters to be updated (counter increments/decrements indexed by column names.)
+	 * @return CDbCommand the created command
+	 * @throws CException if no counter is specified
+	 */
+	public function createUpdateCounterCommand($table,$counters,$criteria)
+	{
+		$criteria=$this->checkCriteria($table, $criteria);
+		return parent::createUpdateCounterCommand($table, $counters, $criteria);
+	}
+
+	/**
+	 * This is a port from Prado Framework.
+	 *
+	 * Overrides parent implementation. Alters the sql to apply $limit and $offset.
+	 * The idea for limit with offset is done by modifying the sql on the fly
+	 * with numerous assumptions on the structure of the sql string.
+	 * The modification is done with reference to the notes from
+	 * http://troels.arvin.dk/db/rdbms/#select-limit-offset
+	 *
+	 * <code>
+	 * SELECT * FROM (
+	 *  SELECT TOP n * FROM (
+	 *    SELECT TOP z columns      -- (z=n+skip)
+	 *    FROM tablename
+	 *    ORDER BY key ASC
+	 *  ) AS FOO ORDER BY key DESC -- ('FOO' may be anything)
+	 * ) AS BAR ORDER BY key ASC    -- ('BAR' may be anything)
+	 * </code>
+	 *
+	 * <b>Regular expressions are used to alter the SQL query. The resulting SQL query
+	 * may be malformed for complex queries.</b> The following restrictions apply
+	 *
+	 * <ul>
+	 *   <li>
+	 * In particular, <b>commas</b> should <b>NOT</b>
+	 * be used as part of the ordering expression or identifier. Commas must only be
+	 * used for separating the ordering clauses.
+	 *   </li>
+	 *   <li>
+	 * In the ORDER BY clause, the column name should NOT be be qualified
+	 * with a table name or view name. Alias the column names or use column index.
+	 *   </li>
+	 *   <li>
+	 * No clauses should follow the ORDER BY clause, e.g. no COMPUTE or FOR clauses.
+	 *   </li>
+	 * </ul>
+	 *
+	 * @param string $sql SQL query string.
+	 * @param integer $limit maximum number of rows, -1 to ignore limit.
+	 * @param integer $offset row offset, -1 to ignore offset.
+	 * @return string SQL with limit and offset.
+	 *
+	 * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
+	 */
+	public function applyLimit($sql, $limit, $offset)
+	{
+		$limit = $limit!==null ? (int)$limit : -1;
+		$offset = $offset!==null ? (int)$offset : -1;
+		if ($limit > 0 && $offset <= 0) //just limit
+			$sql = preg_replace('/^([\s(])*SELECT( DISTINCT)?(?!\s*TOP\s*\()/i',"\\1SELECT\\2 TOP $limit", $sql);
+		elseif($limit > 0 && $offset > 0)
+			$sql = $this->rewriteLimitOffsetSql($sql, $limit,$offset);
+		return $sql;
+	}
+
+	/**
+	 * Rewrite sql to apply $limit > and $offset > 0 for MSSQL database.
+	 * See http://troels.arvin.dk/db/rdbms/#select-limit-offset
+	 * @param string $sql sql query
+	 * @param integer $limit $limit > 0
+	 * @param integer $offset $offset > 0
+	 * @return string modified sql query applied with limit and offset.
+	 *
+	 * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
+	 */
+	protected function rewriteLimitOffsetSql($sql, $limit, $offset)
+	{
+		$fetch = $limit+$offset;
+		$sql = preg_replace('/^([\s(])*SELECT( DISTINCT)?(?!\s*TOP\s*\()/i',"\\1SELECT\\2 TOP $fetch", $sql);
+		$ordering = $this->findOrdering($sql);
+		$orginalOrdering = $this->joinOrdering($ordering, '[__outer__]');
+		$reverseOrdering = $this->joinOrdering($this->reverseDirection($ordering), '[__inner__]');
+		$sql = "SELECT * FROM (SELECT TOP {$limit} * FROM ($sql) as [__inner__] {$reverseOrdering}) as [__outer__] {$orginalOrdering}";
+		return $sql;
+	}
+
+	/**
+	 * Base on simplified syntax http://msdn2.microsoft.com/en-us/library/aa259187(SQL.80).aspx
+	 *
+	 * @param string $sql $sql
+	 * @return array ordering expression as key and ordering direction as value
+	 *
+	 * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
+	 */
+	protected function findOrdering($sql)
+	{
+		if(!preg_match('/ORDER BY/i', $sql))
+			return array();
+		$matches=array();
+		$ordering=array();
+		preg_match_all('/(ORDER BY)[\s"\[](.*)(ASC|DESC)?(?:[\s"\[]|$|COMPUTE|FOR)/i', $sql, $matches);
+		if(count($matches)>1 && count($matches[2]) > 0)
+		{
+			$parts = explode(',', $matches[2][0]);
+			foreach($parts as $part)
+			{
+				$subs=array();
+				if(preg_match_all('/(.*)[\s"\]](ASC|DESC)$/i', trim($part), $subs))
+				{
+					if(count($subs) > 1 && count($subs[2]) > 0)
+					{
+						$name='';
+						foreach(explode('.', $subs[1][0]) as $p)
+						{
+							if($name!=='')
+								$name.='.';
+							$name.='[' . trim($p, '[]') . ']';
+						}
+						$ordering[$name] = $subs[2][0];
+					}
+					//else what?
+				}
+				else
+					$ordering[trim($part)] = 'ASC';
+			}
+		}
+
+		// replacing column names with their alias names
+		foreach($ordering as $name => $direction)
+		{
+			$matches = array();
+			$pattern = '/\s+'.str_replace(array('[',']'), array('\[','\]'), $name).'\s+AS\s+(\[[^\]]+\])/i';
+			preg_match($pattern, $sql, $matches);
+			if(isset($matches[1]))
+			{
+				$ordering[$matches[1]] = $ordering[$name];
+				unset($ordering[$name]);
+			}
+		}
+
+		return $ordering;
+	}
+
+	/**
+	 * @param array $orders ordering obtained from findOrdering()
+	 * @param string $newPrefix new table prefix to the ordering columns
+	 * @return string concat the orderings
+	 *
+	 * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
+	 */
+	protected function joinOrdering($orders, $newPrefix)
+	{
+		if(count($orders)>0)
+		{
+			$str=array();
+			foreach($orders as $column => $direction)
+				$str[] = $column.' '.$direction;
+			$orderBy = 'ORDER BY '.implode(', ', $str);
+			return preg_replace('/\s+\[[^\]]+\]\.(\[[^\]]+\])/i', ' '.$newPrefix.'.\1', $orderBy);
+		}
+	}
+
+	/**
+	 * @param array $orders original ordering
+	 * @return array ordering with reversed direction.
+	 *
+	 * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
+	 */
+	protected function reverseDirection($orders)
+	{
+		foreach($orders as $column => $direction)
+			$orders[$column] = strtolower(trim($direction))==='desc' ? 'ASC' : 'DESC';
+		return $orders;
+	}
+
+
+	/**
+	 * Checks if the criteria has an order by clause when using offset/limit.
+	 * Override parent implementation to check if an orderby clause if specified when querying with an offset
+	 * If not, order it by pk.
+	 * @param CMssqlTableSchema $table table schema
+	 * @param CDbCriteria $criteria criteria
+	 * @return CDbCriteria the modified criteria
+	 */
+	protected function checkCriteria($table, $criteria)
+	{
+		if ($criteria->offset > 0 && $criteria->order==='')
+		{
+			$criteria->order=is_array($table->primaryKey)?implode(',',$table->primaryKey):$table->primaryKey;
+		}
+		return $criteria;
+	}
+
+	/**
+	 * Generates the expression for selecting rows with specified composite key values.
+	 * @param CDbTableSchema $table the table schema
+	 * @param array $values list of primary key values to be selected within
+	 * @param string $prefix column prefix (ended with dot)
+	 * @return string the expression for selection
+	 */
+	protected function createCompositeInCondition($table,$values,$prefix)
+	{
+		$vs=array();
+		foreach($values as $value)
+		{
+			$c=array();
+			foreach($value as $k=>$v)
+				$c[]=$prefix.$table->columns[$k]->rawName.'='.$v;
+			$vs[]='('.implode(' AND ',$c).')';
+		}
+		return '('.implode(' OR ',$vs).')';
+	}
+}

framework/db/schema/mssql/CMssqlPdoAdapter.php

@@ -0,0 +1,72 @@
+<?php
+/**
+ * CMssqlPdo class file
+ *
+ * @author Christophe Boulain <Christophe.Boulain@gmail.com>
+ * @link http://www.yiiframework.com/
+ * @copyright 2008-2013 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+/**
+ * This is an extension of default PDO class for mssql driver only
+ * It provides some missing functionalities of pdo driver
+ * @author Christophe Boulain <Christophe.Boulain@gmail.com>
+ * @package system.db.schema.mssql
+ */
+class CMssqlPdoAdapter extends PDO
+{
+	/**
+	 * Get the last inserted id value
+	 * MSSQL doesn't support sequence, so, argument is ignored
+	 *
+	 * @param string|null sequence name. Defaults to null
+	 * @return integer last inserted id
+	 */
+	public function lastInsertId ($sequence=NULL)
+	{
+		return $this->query('SELECT CAST(COALESCE(SCOPE_IDENTITY(), @@IDENTITY) AS bigint)')->fetchColumn();
+	}
+
+	/**
+	 * Begin a transaction
+	 *
+	 * Is is necessary to override pdo's method, as mssql pdo drivers
+	 * does not support transaction
+	 *
+	 * @return boolean
+	 */
+	public function beginTransaction ()
+	{
+		$this->exec('BEGIN TRANSACTION');
+		return true;
+	}
+
+	/**
+	 * Commit a transaction
+	 *
+	 * Is is necessary to override pdo's method, as mssql pdo drivers
+	 * does not support transaction
+	 *
+	 * @return boolean
+	 */
+	public function commit ()
+	{
+		$this->exec('COMMIT TRANSACTION');
+		return true;
+	}
+
+	/**
+	 * Rollback a transaction
+	 *
+	 * Is is necessary to override pdo's method, ac mssql pdo drivers
+	 * does not support transaction
+	 *
+	 * @return boolean
+	 */
+	public function rollBack ()
+	{
+		$this->exec('ROLLBACK TRANSACTION');
+		return true;
+	}
+}

framework/db/schema/mssql/CMssqlSchema.php

@@ -0,0 +1,439 @@
+<?php
+/**
+ * CMssqlSchema class file.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @author Christophe Boulain <Christophe.Boulain@gmail.com>
+ * @link http://www.yiiframework.com/
+ * @copyright 2008-2013 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+/**
+ * CMssqlSchema is the class for retrieving metadata information from a MS SQL Server database.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @author Christophe Boulain <Christophe.Boulain@gmail.com>
+ * @package system.db.schema.mssql
+ */
+class CMssqlSchema extends CDbSchema
+{
+	const DEFAULT_SCHEMA='dbo';
+
+	/**
+	 * @var array the abstract column types mapped to physical column types.
+	 * @since 1.1.6
+	 */
+	public $columnTypes=array(
+		'pk' => 'int IDENTITY PRIMARY KEY',
+		'string' => 'varchar(255)',
+		'text' => 'text',
+		'integer' => 'int',
+		'float' => 'float',
+		'decimal' => 'decimal',
+		'datetime' => 'datetime',
+		'timestamp' => 'timestamp',
+		'time' => 'time',
+		'date' => 'date',
+		'binary' => 'binary',
+		'boolean' => 'bit',
+	);
+
+	/**
+	 * Quotes a table name for use in a query.
+	 * A simple table name does not schema prefix.
+	 * @param string $name table name
+	 * @return string the properly quoted table name
+	 * @since 1.1.6
+	 */
+	public function quoteSimpleTableName($name)
+	{
+		return '['.$name.']';
+	}
+
+	/**
+	 * Quotes a column name for use in a query.
+	 * A simple column name does not contain prefix.
+	 * @param string $name column name
+	 * @return string the properly quoted column name
+	 * @since 1.1.6
+	 */
+	public function quoteSimpleColumnName($name)
+	{
+		return '['.$name.']';
+	}
+
+	/**
+	 * Compares two table names.
+	 * The table names can be either quoted or unquoted. This method
+	 * will consider both cases.
+	 * @param string $name1 table name 1
+	 * @param string $name2 table name 2
+	 * @return boolean whether the two table names refer to the same table.
+	 */
+	public function compareTableNames($name1,$name2)
+	{
+		$name1=str_replace(array('[',']'),'',$name1);
+		$name2=str_replace(array('[',']'),'',$name2);
+		return parent::compareTableNames(strtolower($name1),strtolower($name2));
+	}
+
+	/**
+	 * Resets the sequence value of a table's primary key.
+	 * The sequence will be reset such that the primary key of the next new row inserted
+	 * will have the specified value or max value of a primary key plus one (i.e. sequence trimming).
+	 * @param CDbTableSchema $table the table schema whose primary key sequence will be reset
+	 * @param integer|null $value the value for the primary key of the next new row inserted.
+	 * If this is not set, the next new row's primary key will have the max value of a primary
+	 * key plus one (i.e. sequence trimming).
+	 * @since 1.1.6
+	 */
+	public function resetSequence($table,$value=null)
+	{
+		if($table->sequenceName===null)
+			return;
+		if($value!==null)
+			$value=(int)($value)-1;
+		else
+			$value=(int)$this->getDbConnection()
+				->createCommand("SELECT MAX([{$table->primaryKey}]) FROM {$table->rawName}")
+				->queryScalar();
+		$name=strtr($table->rawName,array('['=>'',']'=>''));
+		$this->getDbConnection()
+			->createCommand("DBCC CHECKIDENT ('$name',RESEED,$value)")
+			->execute();
+	}
+
+	private $_normalTables=array();  // non-view tables
+	/**
+	 * Enables or disables integrity check.
+	 * @param boolean $check whether to turn on or off the integrity check.
+	 * @param string $schema the schema of the tables. Defaults to empty string, meaning the current or default schema.
+	 * @since 1.1.6
+	 */
+	public function checkIntegrity($check=true,$schema='')
+	{
+		$enable=$check ? 'CHECK' : 'NOCHECK';
+		if(!isset($this->_normalTables[$schema]))
+			$this->_normalTables[$schema]=$this->findTableNames($schema,false);
+		$db=$this->getDbConnection();
+		foreach($this->_normalTables[$schema] as $tableName)
+		{
+			$tableName=$this->quoteTableName($tableName);
+			$db->createCommand("ALTER TABLE $tableName $enable CONSTRAINT ALL")->execute();
+		}
+	}
+
+	/**
+	 * Loads the metadata for the specified table.
+	 * @param string $name table name
+	 * @return CMssqlTableSchema driver dependent table metadata. Null if the table does not exist.
+	 */
+	protected function loadTable($name)
+	{
+		$table=new CMssqlTableSchema;
+		$this->resolveTableNames($table,$name);
+		//if (!in_array($table->name, $this->tableNames)) return null;
+		$table->primaryKey=$this->findPrimaryKey($table);
+		$table->foreignKeys=$this->findForeignKeys($table);
+		if($this->findColumns($table))
+		{
+			return $table;
+		}
+		else
+			return null;
+	}
+
+	/**
+	 * Generates various kinds of table names.
+	 * @param CMssqlTableSchema $table the table instance
+	 * @param string $name the unquoted table name
+	 */
+	protected function resolveTableNames($table,$name)
+	{
+		$parts=explode('.',str_replace(array('[',']'),'',$name));
+		if(($c=count($parts))==3)
+		{
+			// Catalog name, schema name and table name provided
+			$table->catalogName=$parts[0];
+			$table->schemaName=$parts[1];
+			$table->name=$parts[2];
+			$table->rawName=$this->quoteTableName($table->catalogName).'.'.$this->quoteTableName($table->schemaName).'.'.$this->quoteTableName($table->name);
+		}
+		elseif ($c==2)
+		{
+			// Only schema name and table name provided
+			$table->name=$parts[1];
+			$table->schemaName=$parts[0];
+			$table->rawName=$this->quoteTableName($table->schemaName).'.'.$this->quoteTableName($table->name);
+		}
+		else
+		{
+			// Only the name given, we need to get at least the schema name
+			//if (empty($this->_schemaNames)) $this->findTableNames();
+			$table->name=$parts[0];
+			$table->schemaName=self::DEFAULT_SCHEMA;
+			$table->rawName=$this->quoteTableName($table->schemaName).'.'.$this->quoteTableName($table->name);
+		}
+	}
+
+	/**
+	 * Gets the primary key column(s) details for the given table.
+	 * @param CMssqlTableSchema $table table
+	 * @return mixed primary keys (null if no pk, string if only 1 column pk, or array if composite pk)
+	 */
+	protected function findPrimaryKey($table)
+	{
+		$kcu='INFORMATION_SCHEMA.KEY_COLUMN_USAGE';
+		$tc='INFORMATION_SCHEMA.TABLE_CONSTRAINTS';
+		if (isset($table->catalogName))
+		{
+			$kcu=$table->catalogName.'.'.$kcu;
+			$tc=$table->catalogName.'.'.$tc;
+		}
+
+		$sql = <<<EOD
+		SELECT k.column_name field_name
+		FROM {$this->quoteTableName($kcu)} k
+		LEFT JOIN {$this->quoteTableName($tc)} c
+		ON k.table_name = c.table_name
+			AND k.constraint_name = c.constraint_name
+		WHERE c.constraint_type ='PRIMARY KEY'
+			AND k.table_name = :table
+			AND k.table_schema = :schema
+EOD;
+		$command = $this->getDbConnection()->createCommand($sql);
+		$command->bindValue(':table', $table->name);
+		$command->bindValue(':schema', $table->schemaName);
+		$primary=$command->queryColumn();
+		switch (count($primary))
+		{
+			case 0: // No primary key on table
+				$primary=null;
+				break;
+			case 1: // Only 1 primary key
+				$primary=$primary[0];
+				break;
+		}
+		return $primary;
+	}
+
+	/**
+	 * Gets foreign relationship constraint keys and table name
+	 * @param CMssqlTableSchema $table table
+	 * @return array foreign relationship table name and keys.
+	 */
+	protected function findForeignKeys($table)
+	{
+		$rc='INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS';
+		$kcu='INFORMATION_SCHEMA.KEY_COLUMN_USAGE';
+		if (isset($table->catalogName))
+		{
+			$kcu=$table->catalogName.'.'.$kcu;
+			$rc=$table->catalogName.'.'.$rc;
+		}
+
+		//From http://msdn2.microsoft.com/en-us/library/aa175805(SQL.80).aspx
+		$sql = <<<EOD
+		SELECT
+		     KCU1.CONSTRAINT_NAME AS 'FK_CONSTRAINT_NAME'
+		   , KCU1.TABLE_NAME AS 'FK_TABLE_NAME'
+		   , KCU1.COLUMN_NAME AS 'FK_COLUMN_NAME'
+		   , KCU1.ORDINAL_POSITION AS 'FK_ORDINAL_POSITION'
+		   , KCU2.CONSTRAINT_NAME AS 'UQ_CONSTRAINT_NAME'
+		   , KCU2.TABLE_NAME AS 'UQ_TABLE_NAME'
+		   , KCU2.COLUMN_NAME AS 'UQ_COLUMN_NAME'
+		   , KCU2.ORDINAL_POSITION AS 'UQ_ORDINAL_POSITION'
+		FROM {$this->quoteTableName($rc)} RC
+		JOIN {$this->quoteTableName($kcu)} KCU1
+		ON KCU1.CONSTRAINT_CATALOG = RC.CONSTRAINT_CATALOG
+		   AND KCU1.CONSTRAINT_SCHEMA = RC.CONSTRAINT_SCHEMA
+		   AND KCU1.CONSTRAINT_NAME = RC.CONSTRAINT_NAME
+		JOIN {$this->quoteTableName($kcu)} KCU2
+		ON KCU2.CONSTRAINT_CATALOG =
+		RC.UNIQUE_CONSTRAINT_CATALOG
+		   AND KCU2.CONSTRAINT_SCHEMA =
+		RC.UNIQUE_CONSTRAINT_SCHEMA
+		   AND KCU2.CONSTRAINT_NAME =
+		RC.UNIQUE_CONSTRAINT_NAME
+		   AND KCU2.ORDINAL_POSITION = KCU1.ORDINAL_POSITION
+		WHERE KCU1.TABLE_NAME = :table
+EOD;
+		$command = $this->getDbConnection()->createCommand($sql);
+		$command->bindValue(':table', $table->name);
+		$fkeys=array();
+		foreach($command->queryAll() as $info)
+		{
+			$fkeys[$info['FK_COLUMN_NAME']]=array($info['UQ_TABLE_NAME'],$info['UQ_COLUMN_NAME'],);
+
+		}
+		return $fkeys;
+	}
+
+
+	/**
+	 * Collects the table column metadata.
+	 * @param CMssqlTableSchema $table the table metadata
+	 * @return boolean whether the table exists in the database
+	 */
+	protected function findColumns($table)
+	{
+		$columnsTable="INFORMATION_SCHEMA.COLUMNS";
+		$where=array();
+		$where[]="t1.TABLE_NAME='".$table->name."'";
+		if (isset($table->catalogName))
+		{
+			$where[]="t1.TABLE_CATALOG='".$table->catalogName."'";
+			$columnsTable = $table->catalogName.'.'.$columnsTable;
+		}
+		if (isset($table->schemaName))
+			$where[]="t1.TABLE_SCHEMA='".$table->schemaName."'";
+
+		$sql="SELECT t1.*, columnproperty(object_id(t1.table_schema+'.'+t1.table_name), t1.column_name, 'IsIdentity') AS IsIdentity, ".
+			 "CONVERT(VARCHAR, t2.value) AS Comment FROM ".$this->quoteTableName($columnsTable)." AS t1 ".
+			 "LEFT OUTER JOIN sys.extended_properties AS t2 ON t1.ORDINAL_POSITION = t2.minor_id AND ".
+			 "object_name(t2.major_id) = t1.TABLE_NAME AND t2.class=1 AND t2.class_desc='OBJECT_OR_COLUMN' AND t2.name='MS_Description' ".
+			 "WHERE ".join(' AND ',$where);
+		try
+		{
+			$columns=$this->getDbConnection()->createCommand($sql)->queryAll();
+			if(empty($columns))
+				return false;
+		}
+		catch(Exception $e)
+		{
+			return false;
+		}
+
+		foreach($columns as $column)
+		{
+			$c=$this->createColumn($column);
+			if (is_array($table->primaryKey))
+				$c->isPrimaryKey=in_array($c->name, $table->primaryKey);
+			else
+				$c->isPrimaryKey=strcasecmp($c->name,$table->primaryKey)===0;
+
+			$c->isForeignKey=isset($table->foreignKeys[$c->name]);
+			$table->columns[$c->name]=$c;
+			if ($c->autoIncrement && $table->sequenceName===null)
+				$table->sequenceName=$table->name;
+		}
+		return true;
+	}
+
+	/**
+	 * Creates a table column.
+	 * @param array $column column metadata
+	 * @return CDbColumnSchema normalized column metadata
+	 */
+	protected function createColumn($column)
+	{
+		$c=new CMssqlColumnSchema;
+		$c->name=$column['COLUMN_NAME'];
+		$c->rawName=$this->quoteColumnName($c->name);
+		$c->allowNull=$column['IS_NULLABLE']=='YES';
+		if ($column['NUMERIC_PRECISION_RADIX']!==null)
+		{
+			// We have a numeric datatype
+			$c->size=$c->precision=$column['NUMERIC_PRECISION']!==null?(int)$column['NUMERIC_PRECISION']:null;
+			$c->scale=$column['NUMERIC_SCALE']!==null?(int)$column['NUMERIC_SCALE']:null;
+		}
+		elseif ($column['DATA_TYPE']=='image' || $column['DATA_TYPE']=='text')
+			$c->size=$c->precision=null;
+		else
+			$c->size=$c->precision=($column['CHARACTER_MAXIMUM_LENGTH']!== null)?(int)$column['CHARACTER_MAXIMUM_LENGTH']:null;
+		$c->autoIncrement=$column['IsIdentity']==1;
+		$c->comment=$column['Comment']===null ? '' : $column['Comment'];
+
+		$c->init($column['DATA_TYPE'],$column['COLUMN_DEFAULT']);
+		return $c;
+	}
+
+	/**
+	 * Returns all table names in the database.
+	 * @param string $schema the schema of the tables. Defaults to empty string, meaning the current or default schema.
+	 * If not empty, the returned table names will be prefixed with the schema name.
+	 * @param boolean $includeViews whether to include views in the result. Defaults to true.
+	 * @return array all table names in the database.
+	 */
+	protected function findTableNames($schema='',$includeViews=true)
+	{
+		if($schema==='')
+			$schema=self::DEFAULT_SCHEMA;
+		if($includeViews)
+			$condition="TABLE_TYPE in ('BASE TABLE','VIEW')";
+		else
+			$condition="TABLE_TYPE='BASE TABLE'";
+		$sql=<<<EOD
+SELECT TABLE_NAME FROM [INFORMATION_SCHEMA].[TABLES]
+WHERE TABLE_SCHEMA=:schema AND $condition
+EOD;
+		$command=$this->getDbConnection()->createCommand($sql);
+		$command->bindParam(":schema", $schema);
+		$rows=$command->queryAll();
+		$names=array();
+		foreach ($rows as $row)
+		{
+			if ($schema == self::DEFAULT_SCHEMA)
+				$names[]=$row['TABLE_NAME'];
+			else
+				$names[]=$schema.'.'.$row['TABLE_NAME'];
+		}
+
+		return $names;
+	}
+
+	/**
+	 * Creates a command builder for the database.
+	 * This method overrides parent implementation in order to create a MSSQL specific command builder
+	 * @return CDbCommandBuilder command builder instance
+	 */
+	protected function createCommandBuilder()
+	{
+		return new CMssqlCommandBuilder($this);
+	}
+
+	/**
+	 * Builds a SQL statement for renaming a DB table.
+	 * @param string $table the table to be renamed. The name will be properly quoted by the method.
+	 * @param string $newName the new table name. The name will be properly quoted by the method.
+	 * @return string the SQL statement for renaming a DB table.
+	 * @since 1.1.6
+	 */
+	public function renameTable($table, $newName)
+	{
+		return "sp_rename '$table', '$newName'";
+	}
+
+	/**
+	 * Builds a SQL statement for renaming a column.
+	 * @param string $table the table whose column is to be renamed. The name will be properly quoted by the method.
+	 * @param string $name the old name of the column. The name will be properly quoted by the method.
+	 * @param string $newName the new name of the column. The name will be properly quoted by the method.
+	 * @return string the SQL statement for renaming a DB column.
+	 * @since 1.1.6
+	 */
+	public function renameColumn($table, $name, $newName)
+	{
+		return "sp_rename '$table.$name', '$newName', 'COLUMN'";
+	}
+
+	/**
+	 * Builds a SQL statement for changing the definition of a column.
+	 * @param string $table the table whose column is to be changed. The table name will be properly quoted by the method.
+	 * @param string $column the name of the column to be changed. The name will be properly quoted by the method.
+	 * @param string $type the new column type. The {@link getColumnType} method will be invoked to convert abstract column type (if any)
+	 * into the physical one. Anything that is not recognized as abstract type will be kept in the generated SQL.
+	 * For example, 'string' will be turned into 'varchar(255)', while 'string not null' will become 'varchar(255) not null'.
+	 * @return string the SQL statement for changing the definition of a column.
+	 * @since 1.1.6
+	 */
+	public function alterColumn($table, $column, $type)
+	{
+		$type=$this->getColumnType($type);
+		$sql='ALTER TABLE ' . $this->quoteTableName($table) . ' ALTER COLUMN '
+			. $this->quoteColumnName($column) . ' '
+			. $this->getColumnType($type);
+		return $sql;
+	}
+}

framework/db/schema/mssql/CMssqlSqlsrvPdoAdapter.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * CMssqlSqlsrvPdoAdapter class file.
+ *
+ * @author Timur Ruziev <resurtm@gmail.com>
+ * @link http://www.yiiframework.com/
+ * @copyright 2008-2013 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+/**
+ * This is an extension of default PDO class for MSSQL SQLSRV driver only.
+ * It provides workaround of the improperly implemented functionalities of PDO SQLSRV driver.
+ *
+ * @author Timur Ruziev <resurtm@gmail.com>
+ * @package system.db.schema.mssql
+ * @since 1.1.13
+ */
+class CMssqlSqlsrvPdoAdapter extends PDO
+{
+	/**
+	 * Returns last inserted ID value.
+	 * SQLSRV driver supports PDO::lastInsertId() with one peculiarity: when $sequence's value is null or empty
+	 * string it returns empty string. But when parameter is not specified at all it's working as expected
+	 * and returns actual last inserted ID (like other PDO drivers).
+	 *
+	 * @param string|null $sequence the sequence name. Defaults to null.
+	 * @return integer last inserted ID value.
+	 */
+	public function lastInsertId($sequence=null)
+	{
+		if(!$sequence)
+			return parent::lastInsertId();
+		return parent::lastInsertId($sequence);
+	}
+}

framework/db/schema/mssql/CMssqlTableSchema.php

@@ -0,0 +1,31 @@
+<?php
+/**
+ * CMssqlTableSchema class file.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @author Christophe Boulain <Christophe.Boulain@gmail.com>
+ * @link http://www.yiiframework.com/
+ * @copyright 2008-2013 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+/**
+ * CMssqlTableSchema represents the metadata for a MSSQL table.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @author Christophe Boulain <Christophe.Boulain@gmail.com>
+ * @package system.db.schema.mssql
+ */
+class CMssqlTableSchema extends CDbTableSchema
+{
+	/**
+	 * @var string name of the catalog (database) that this table belongs to.
+	 * Defaults to null, meaning no schema (or the current database).
+	 */
+	public $catalogName;
+	/**
+	 * @var string name of the schema that this table belongs to.
+	 * Defaults to null, meaning no schema (or the current database owner).
+	 */
+	public $schemaName;
+}