diff options
Diffstat (limited to 'framework/Testing/Data/Schema/mssql/TMssqlSchema.php')
| -rwxr-xr-x | framework/Testing/Data/Schema/mssql/TMssqlSchema.php | 312 | 
1 files changed, 312 insertions, 0 deletions
diff --git a/framework/Testing/Data/Schema/mssql/TMssqlSchema.php b/framework/Testing/Data/Schema/mssql/TMssqlSchema.php new file mode 100755 index 00000000..1b3d815c --- /dev/null +++ b/framework/Testing/Data/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 © 2008-2009 Yii Software LLC + * @license http://www.yiiframework.com/license/ + */ + +prado::using('System.Testing.Data.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.Testing.Data.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); +	} +}  | 
