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authorrojaro <>2009-07-13 14:02:17 +0000
committerrojaro <>2009-07-13 14:02:17 +0000
commit78af2b4630ccde4b03659a259f739f83ae0de9ec (patch)
treef1a27cc2dbe77682143ae8243eee91187e66c6fe /framework/Db/Schema/mssql
parentb4b2c7e5e2eadd48b344538823dcf5645939ba44 (diff)
- ActiveRecord Port from Yii ... not perfect but works ^^
Diffstat (limited to 'framework/Db/Schema/mssql')
-rwxr-xr-xframework/Db/Schema/mssql/TMssqlColumnSchema.php57
-rwxr-xr-xframework/Db/Schema/mssql/TMssqlCommandBuilder.php303
-rwxr-xr-xframework/Db/Schema/mssql/TMssqlPdoAdapter.php74
-rwxr-xr-xframework/Db/Schema/mssql/TMssqlSchema.php312
-rwxr-xr-xframework/Db/Schema/mssql/TMssqlTableSchema.php35
5 files changed, 781 insertions, 0 deletions
diff --git a/framework/Db/Schema/mssql/TMssqlColumnSchema.php b/framework/Db/Schema/mssql/TMssqlColumnSchema.php
new file mode 100755
index 00000000..0c5c6ac4
--- /dev/null
+++ b/framework/Db/Schema/mssql/TMssqlColumnSchema.php
@@ -0,0 +1,57 @@
+<?php
+/**
+ * TMssqlColumnSchema class file.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @author Christophe Boulain <Christophe.Boulain@gmail.com>
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright &copy; 2008-2009 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+prado::using('System.Db.Schema.TDbColumnSchema');
+
+/**
+ * TMssqlColumnSchema class describes the column meta data of a MSSQL table.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @author Christophe Boulain <Christophe.Boulain@gmail.com>
+ * @version $Id: TMssqlColumnSchema.php 2679 2009-06-15 07:49:42Z Christophe.Boulain $
+ * @package System.Db.Schema.mssql
+ * @since 1.0.4
+ */
+class TMssqlColumnSchema extends TDbColumnSchema
+{
+ /**
+ * Extracts the PHP type from DB type.
+ * @param string DB type
+ */
+ protected function extractType($dbType)
+ {
+ if(strpos($dbType,'bigint')!==false || strpos($dbType,'float')!==false || strpos($dbType,'real')!==false)
+ $this->type='double';
+ else if(strpos($dbType,'int')!==false || strpos($dbType,'smallint')!==false || strpos($dbType,'tinyint'))
+ $this->type='integer';
+ else if(strpos($dbType,'bit')!==false)
+ $this->type='boolean';
+ else
+ $this->type='string';
+ }
+
+ protected function extractDefault($defaultValue)
+ {
+ if($this->dbType==='timestamp' )
+ $this->defaultValue=null;
+ else
+ parent::extractDefault(str_replace(array('(',')',"'"), '', $defaultValue));
+ }
+
+ /**
+ * Extracts size, precision and scale information from column's DB type.
+ * We do nothing here, since sizes and precisions have been computed before.
+ * @param string the column's DB type
+ */
+ protected function extractLimit($dbType)
+ {
+ }
+}
diff --git a/framework/Db/Schema/mssql/TMssqlCommandBuilder.php b/framework/Db/Schema/mssql/TMssqlCommandBuilder.php
new file mode 100755
index 00000000..f0b5c7f4
--- /dev/null
+++ b/framework/Db/Schema/mssql/TMssqlCommandBuilder.php
@@ -0,0 +1,303 @@
+<?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 Copyright &copy; 2008-2009 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+prado::using ('System.Db.schame.TDbCommandBuilder');
+
+/**
+ * TMssqlCommandBuilder 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>
+ * @version $Id: TMssqlCommandBuilder.php 2679 2009-06-15 07:49:42Z Christophe.Boulain $
+ * @package system.db.schema.mssql
+ * @since 1.0.4
+ */
+class TMssqlCommandBuilder extends TDbCommandBuilder
+{
+ /**
+ * Returns the last insertion ID for the specified table.
+ * Override parent implemantation since PDO mssql driver does not provide this method
+ * @param TDbTableSchema the table metadata
+ * @return mixed last insertion id. Null is returned if no sequence name.
+ */
+ public function getLastInsertID($table)
+ {
+ if($table->sequenceName!==null)
+ return $this->getDbConnection()->createCommand('SELECT SCOPE_IDENTITY()')->queryScalar();
+ else
+ return null;
+ }
+
+ /**
+ * Creates a COUNT(*) command for a single table.
+ * Override parent implementation to remove the order clause of criteria if it exists
+ * @param TDbTableSchema the table metadata
+ * @param TDbCriteria the query criteria
+ * @return TDbCommand query command.
+ */
+ public function createCountCommand($table,$criteria)
+ {
+ $criteria->order='';
+ return parent::createCountCommand($table, $criteria);
+ }
+
+ /**
+ * Creates a SELECT command for a single table.
+ * Override parent implementation to check if an orderby clause if specified when querying with an offset
+ * @param TDbTableSchema the table metadata
+ * @param TDbCriteria the query criteria
+ * @return TDbCommand query command.
+ */
+ public function createFindCommand($table,$criteria)
+ {
+ $criteria=$this->checkCriteria($table,$criteria);
+ return parent::createFindCommand($table,$criteria);
+
+ }
+
+ /**
+ * Creates an UPDATE command.
+ * Override parent implementation because mssql don't want to update an identity column
+ * @param TDbTableSchema the table metadata
+ * @param array list of columns to be updated (name=>value)
+ * @param TDbCriteria the query criteria
+ * @return TDbCommand update command.
+ */
+ public function createUpdateCommand($table,$data,$criteria)
+ {
+ $criteria=$this->checkCriteria($table,$criteria);
+ $fields=array();
+ $values=array();
+ $bindByPosition=isset($criteria->params[0]);
+ foreach($data as $name=>$value)
+ {
+ if(($column=$table->getColumn($name))!==null)
+ {
+ if ($table->sequenceName !== null && $column->isPrimaryKey === true) continue;
+ if($value instanceof TDbExpression)
+ $fields[]=$column->rawName.'='.(string)$value;
+ else if($bindByPosition)
+ {
+ $fields[]=$column->rawName.'=?';
+ $values[]=$column->typecast($value);
+ }
+ else
+ {
+ $fields[]=$column->rawName.'=:'.$name;
+ $values[':'.$name]=$column->typecast($value);
+ }
+ }
+ }
+ if($fields===array())
+ throw new TDbException('No columns are being updated for table "{0}".',
+ $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 $command;
+ }
+
+ /**
+ * Creates a DELETE command.
+ * Override parent implementation to check if an orderby clause if specified when querying with an offset
+ * @param TDbTableSchema the table metadata
+ * @param TDbCriteria the query criteria
+ * @return TDbCommand delete command.
+ */
+ public function createDeleteCommand($table,$criteria)
+ {
+ $criteria=$this->checkCriteria($table, $criteria);
+ return parent::createDeleteCommand($table, $criteria);
+ }
+
+ /**
+ * Creates an UPDATE command that increments/decrements certain columns.
+ * Override parent implementation to check if an orderby clause if specified when querying with an offset
+ * @param TDbTableSchema the table metadata
+ * @param TDbCriteria the query criteria
+ * @param array counters to be updated (counter increments/decrements indexed by column names.)
+ * @return TDbCommand the created command
+ * @throws CException if no counter is specified
+ */
+ public function createUpdateCounterCommand($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 $offset.
+ * The idea for limit with offset is done by modifying the sql on the fly
+ * with numerous assumptions on the structure of the sql string.
+ * The modification is done with reference to the notes from
+ * http://troels.arvin.dk/db/rdbms/#select-limit-offset
+ *
+ * <code>
+ * SELECT * FROM (
+ * SELECT TOP n * FROM (
+ * SELECT TOP z columns -- (z=n+skip)
+ * FROM tablename
+ * ORDER BY key ASC
+ * ) AS FOO ORDER BY key DESC -- ('FOO' may be anything)
+ * ) AS BAR ORDER BY key ASC -- ('BAR' may be anything)
+ * </code>
+ *
+ * <b>Regular expressions are used to alter the SQL query. The resulting SQL query
+ * may be malformed for complex queries.</b> The following restrictions apply
+ *
+ * <ul>
+ * <li>
+ * In particular, <b>commas</b> should <b>NOT</b>
+ * be used as part of the ordering expression or identifier. Commas must only be
+ * used for separating the ordering clauses.
+ * </li>
+ * <li>
+ * In the ORDER BY clause, the column name should NOT be be qualified
+ * with a table name or view name. Alias the column names or use column index.
+ * </li>
+ * <li>
+ * No clauses should follow the ORDER BY clause, e.g. no COMPUTE or FOR clauses.
+ * </li>
+ *
+ * @param string SQL query string.
+ * @param integer maximum number of rows, -1 to ignore limit.
+ * @param integer row offset, -1 to ignore offset.
+ * @return string SQL with limit and offset.
+ *
+ * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
+ */
+ public function applyLimit($sql, $limit, $offset)
+ {
+ $limit = $limit!==null ? intval($limit) : -1;
+ $offset = $offset!==null ? intval($offset) : -1;
+ if ($limit > 0 && $offset <= 0) //just limit
+ $sql = preg_replace('/^([\s(])*SELECT( DISTINCT)?(?!\s*TOP\s*\()/i',"\\1SELECT\\2 TOP $limit", $sql);
+ else if($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 query
+ * @param integer $limit > 0
+ * @param integer $offset > 0
+ * @return sql modified sql query applied with limit and offset.
+ *
+ * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
+ */
+ protected function rewriteLimitOffsetSql($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);
+ $reverseOrdering = $this->joinOrdering($this->reverseDirection($ordering));
+ $sql = "SELECT * FROM (SELECT TOP {$limit} * FROM ($sql) as [__inner top table__] {$reverseOrdering}) as [__outer top table__] {$orginalOrdering}";
+ return $sql;
+ }
+
+ /**
+ * Base on simplified syntax http://msdn2.microsoft.com/en-us/library/aa259187(SQL.80).aspx
+ *
+ * @param string $sql
+ * @return array ordering expression as key and ordering direction as value
+ *
+ * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
+ */
+ protected function findOrdering($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)
+ {
+ $ordering[$subs[1][0]] = $subs[2][0];
+ }
+ //else what?
+ }
+ else
+ $ordering[trim($part)] = 'ASC';
+ }
+ }
+ return $ordering;
+ }
+
+ /**
+ * @param array ordering obtained from findOrdering()
+ * @return string concat the orderings
+ *
+ * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
+ */
+ protected function joinOrdering($orders)
+ {
+ if(count($orders)>0)
+ {
+ $str=array();
+ foreach($orders as $column => $direction)
+ $str[] = $column.' '.$direction;
+ return 'ORDER BY '.implode(', ', $str);
+ }
+ }
+
+ /**
+ * @param array original ordering
+ * @return array ordering with reversed direction.
+ *
+ * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
+ */
+ protected function reverseDirection($orders)
+ {
+ foreach($orders as $column => $direction)
+ $orders[$column] = strtolower(trim($direction))==='desc' ? 'ASC' : 'DESC';
+ return $orders;
+ }
+
+
+ /**
+ * Checks if the criteria has an order by clause when using offset/limit.
+ * Override parent implementation to check if an orderby clause if specified when querying with an offset
+ * If not, order it by pk.
+ * @param TMssqlTableSchema table schema
+ * @param TDbCriteria criteria
+ * @return TDbCrireria the modified criteria
+ */
+ protected function checkCriteria($table, $criteria)
+ {
+ if ($criteria->offset > 0 && $criteria->order==='')
+ {
+ $criteria->order=is_array($table->primaryKey)?implode(',',$table->primaryKey):$table->primaryKey;
+ }
+ return $criteria;
+ }
+}
diff --git a/framework/Db/Schema/mssql/TMssqlPdoAdapter.php b/framework/Db/Schema/mssql/TMssqlPdoAdapter.php
new file mode 100755
index 00000000..c9d4597f
--- /dev/null
+++ b/framework/Db/Schema/mssql/TMssqlPdoAdapter.php
@@ -0,0 +1,74 @@
+<?php
+/**
+ * TMssqlPdo class file
+ *
+ * @author Christophe Boulain <Christophe.Boulain@gmail.com>
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright &copy; 2008-2009 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>
+ * @version $Id: TMssqlPdoAdapter.php 2679 2009-06-15 07:49:42Z Christophe.Boulain $
+ * @package system.db.schema.mssql
+ * @since 1.0.4
+ */
+class TMssqlPdoAdapter extends PDO
+{
+ /**
+ * Get the last inserted id value
+ * MSSQL doesn't support sequence, so, argument is ignored
+ *
+ * @param string sequence name. Defaults to null
+ * @return int last inserted id
+ */
+ public function lastInsertId ($sequence=NULL)
+ {
+ return $this->query('SELECT SCOPE_IDENTITY()')->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;
+ }
+}
diff --git a/framework/Db/Schema/mssql/TMssqlSchema.php b/framework/Db/Schema/mssql/TMssqlSchema.php
new file mode 100755
index 00000000..063e8994
--- /dev/null
+++ b/framework/Db/Schema/mssql/TMssqlSchema.php
@@ -0,0 +1,312 @@
+<?php
+/**
+ * TMssqlSchema class file.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @author Christophe Boulain <Christophe.Boulain@gmail.com>
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright &copy; 2008-2009 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+prado::using('System.Db.Schema.TDbSchema');
+
+/**
+ * TMssqlSchema 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>
+ * @version $Id: TMssqlSchema.php 2679 2009-06-15 07:49:42Z Christophe.Boulain $
+ * @package System.Db.Schema.mssql
+ * @since 1.0.4
+ */
+class TMssqlSchema extends TDbSchema
+{
+ const DEFAULT_SCHEMA='dbo';
+
+
+ /**
+ * Quotes a table name for use in a query.
+ * @param string table name
+ * @return string the properly quoted table name
+ */
+ public function quoteTableName($name)
+ {
+ if (strpos($name,'.')===false)
+ return '['.$name.']';
+ $names=explode('.',$name);
+ foreach ($names as &$n)
+ $n = '['.$n.']';
+ return implode('.',$names);
+ }
+
+ /**
+ * Quotes a column name for use in a query.
+ * @param string column name
+ * @return string the properly quoted column name
+ */
+ public function quoteColumnName($name)
+ {
+ return '['.$name.']';
+ }
+
+ /**
+ * Compares two table names.
+ * The table names can be either quoted or unquoted. This method
+ * will consider both cases.
+ * @param string table name 1
+ * @param string table name 2
+ * @return boolean whether the two table names refer to the same table.
+ */
+ public function compareTableNames($name1,$name2)
+ {
+ $name1=str_replace(array('[',']'),'',$name1);
+ $name1=str_replace(array('[',']'),'',$name2);
+ return parent::compareTableNames(strtolower($name1),strtolower($name2));
+ }
+
+ /**
+ * Creates a table instance representing the metadata for the named table.
+ * @return CMysqlTableSchema driver dependent table metadata. Null if the table does not exist.
+ */
+ protected function createTable($name)
+ {
+ $table=new TMssqlTableSchema;
+ $this->resolveTableNames($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 $table;
+ }
+ else
+ return null;
+ }
+
+ /**
+ * Generates various kinds of table names.
+ * @param CMysqlTableSchema the table instance
+ * @param string the unquoted table name
+ */
+ protected function resolveTableNames($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($table->name);
+ }
+ }
+
+ /**
+ * Gets the primary key column(s) details for the given table.
+ * @param TMssqlTableSchema table
+ * @return mixed primary keys (null if no pk, string if only 1 column pk, or array if composite pk)
+ */
+ protected function findPrimaryKey($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 $primary;
+ }
+
+ /**
+ * Gets foreign relationship constraint keys and table name
+ * @param TMssqlTableSchema table
+ * @return array foreign relationship table name and keys.
+ */
+ protected function findForeignKeys($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 $fkeys;
+ }
+
+
+ /**
+ * Collects the table column metadata.
+ * @param CMysqlTableSchema the table metadata
+ * @return boolean whether the table exists in the database
+ */
+ protected function findColumns($table)
+ {
+ $where=array();
+ $where[]="TABLE_NAME='".$table->name."'";
+ if (isset($table->catalogName))
+ $where[]="TABLE_CATALOG='".$table->catalogName."'";
+ if (isset($table->schemaName))
+ $where[]="TABLE_SCHEMA='".$table->schemaName."'";
+ $sql="SELECT *, columnproperty(object_id(table_schema+'.'+table_name), column_name, 'IsIdentity') as IsIdentity ".
+ "FROM INFORMATION_SCHEMA.COLUMNS WHERE ".join(' AND ',$where);
+ if (($columns=$this->getDbConnection()->createCommand($sql)->queryAll())===array())
+ return false;
+
+ foreach($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]=$c;
+ if ($column['IsIdentity']==1 && $table->sequenceName===null)
+ $table->sequenceName='';
+
+ }
+ return true;
+ }
+
+ /**
+ * Creates a table column.
+ * @param array column metadata
+ * @return TDbColumnSchema normalized column metadata
+ */
+ protected function createColumn($column)
+ {
+ $c=new TMssqlColumnSchema;
+ $c->name=$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;
+
+ $c->init($column['DATA_TYPE'],$column['COLUMN_DEFAULT']);
+ return $c;
+ }
+
+ /**
+ * Returns all table names in the database.
+ * @return array all table names in the database.
+ * @since 1.0.4
+ */
+ protected function findTableNames($schema='')
+ {
+ if($schema==='')
+ $schema=self::DEFAULT_SCHEMA;
+ $sql=<<<EOD
+SELECT TABLE_NAME, TABLE_SCHEMA FROM [INFORMATION_SCHEMA].[TABLES]
+WHERE TABLE_TYPE='BASE TABLE' AND TABLE_SCHEMA=:schema
+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.'.'.$row['TABLE_SCHEMA'].'.'.$row['TABLE_NAME'];
+ }
+
+ return $names;
+ }
+
+ /**
+ * Creates a command builder for the database.
+ * This method overrides parent implementation in order to create a MSSQL specific command builder
+ * @return TDbCommandBuilder command builder instance
+ */
+ protected function createCommandBuilder()
+ {
+ return new TMssqlCommandBuilder($this);
+ }
+}
diff --git a/framework/Db/Schema/mssql/TMssqlTableSchema.php b/framework/Db/Schema/mssql/TMssqlTableSchema.php
new file mode 100755
index 00000000..ed1b7c8a
--- /dev/null
+++ b/framework/Db/Schema/mssql/TMssqlTableSchema.php
@@ -0,0 +1,35 @@
+<?php
+/**
+ * TMssqlTableSchema class file.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @author Christophe Boulain <Christophe.Boulain@gmail.com>
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright &copy; 2008-2009 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+prado::using('System.Db.TDbTableSchema');
+
+/**
+ * TMssqlTableSchema represents the metadata for a MSSQL table.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @author Christophe Boulain <Christophe.Boulain@gmail.com>
+ * @version $Id: TMssqlTableSchema.php 2679 2009-06-15 07:49:42Z Christophe.Boulain $
+ * @package system.Db.schema.mssql
+ * @since 1.0.4
+ */
+class TMssqlTableSchema extends TDbTableSchema
+{
+ /**
+ * @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;
+}