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-rw-r--r--framework/Data/Common/TDbMetaData.php364
1 files changed, 182 insertions, 182 deletions
diff --git a/framework/Data/Common/TDbMetaData.php b/framework/Data/Common/TDbMetaData.php
index fdf367c9..5fc4fec9 100644
--- a/framework/Data/Common/TDbMetaData.php
+++ b/framework/Data/Common/TDbMetaData.php
@@ -1,183 +1,183 @@
-<?php
-/**
- * TDbMetaData class file.
- *
- * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
- * @link http://www.pradosoft.com/
+<?php
+/**
+ * TDbMetaData class file.
+ *
+ * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
+ * @link http://www.pradosoft.com/
* @copyright Copyright &copy; 2005-2012 PradoSoft
- * @license http://www.pradosoft.com/license/
- * @version $Id$
- * @package System.Data.Common
- */
-
-/**
- * TDbMetaData is the base class for retrieving metadata information, such as
- * table and columns information, from a database connection.
- *
- * Use the {@link getTableInfo} method to retrieve a table information.
- *
- * @author Wei Zhuo <weizho[at]gmail[dot]com>
- * @version $Id$
- * @package System.Data.Common
- * @since 3.1
- */
-abstract class TDbMetaData extends TComponent
-{
- private $_tableInfoCache=array();
- private $_connection;
-
- /**
- * @var array
- */
- protected static $delimiterIdentifier = array('[', ']', '"', '`', "'");
-
- /**
- * @param TDbConnection database connection.
- */
- public function __construct($conn)
- {
- $this->_connection=$conn;
- }
-
- /**
- * @return TDbConnection database connection.
- */
- public function getDbConnection()
- {
- return $this->_connection;
- }
-
- /**
- * Obtain database specific TDbMetaData class using the driver name of the database connection.
- * @param TDbConnection database connection.
- * @return TDbMetaData database specific TDbMetaData.
- */
- public static function getInstance($conn)
- {
- $conn->setActive(true); //must be connected before retrieving driver name
- $driver = $conn->getDriverName();
- switch(strtolower($driver))
- {
- case 'pgsql':
- Prado::using('System.Data.Common.Pgsql.TPgsqlMetaData');
- return new TPgsqlMetaData($conn);
- case 'mysqli':
- case 'mysql':
- Prado::using('System.Data.Common.Mysql.TMysqlMetaData');
- return new TMysqlMetaData($conn);
- case 'sqlite': //sqlite 3
- case 'sqlite2': //sqlite 2
- Prado::using('System.Data.Common.Sqlite.TSqliteMetaData');
- return new TSqliteMetaData($conn);
- case 'mssql': // Mssql driver on windows hosts
- case 'dblib': // dblib drivers on linux (and maybe others os) hosts
- Prado::using('System.Data.Common.Mssql.TMssqlMetaData');
- return new TMssqlMetaData($conn);
- case 'oci':
- Prado::using('System.Data.Common.Oracle.TOracleMetaData');
- return new TOracleMetaData($conn);
-// case 'ibm':
-// Prado::using('System.Data.Common.IbmDb2.TIbmDb2MetaData');
-// return new TIbmDb2MetaData($conn);
- default:
- throw new TDbException('ar_invalid_database_driver',$driver);
- }
- }
-
- /**
- * Obtains table meta data information for the current connection and given table name.
- * @param string table or view name
- * @return TDbTableInfo table information.
- */
- public function getTableInfo($tableName=null)
- {
- $key = $tableName===null?$this->getDbConnection()->getConnectionString():$tableName;
- if(!isset($this->_tableInfoCache[$key]))
- {
- $class = $this->getTableInfoClass();
- $tableInfo = $tableName===null ? new $class : $this->createTableInfo($tableName);
- $this->_tableInfoCache[$key] = $tableInfo;
- }
- return $this->_tableInfoCache[$key];
- }
-
- /**
- * Creates a command builder for a given table name.
- * @param string table name.
- * @return TDbCommandBuilder command builder instance for the given table.
- */
- public function createCommandBuilder($tableName=null)
- {
- return $this->getTableInfo($tableName)->createCommandBuilder($this->getDbConnection());
- }
-
- /**
- * This method should be implemented by decendent classes.
- * @return TDbTableInfo driver dependent create builder.
- */
- abstract protected function createTableInfo($tableName);
-
- /**
- * @return string TDbTableInfo class name.
- */
- protected function getTableInfoClass()
- {
- return 'TDbTableInfo';
- }
-
- /**
- * Quotes a table name for use in a query.
- * @param string $name table name
- * @param string $lft left delimiter
- * @param string $rgt right delimiter
- * @return string the properly quoted table name
- */
- public function quoteTableName($name)
- {
- $name = str_replace(self::$delimiterIdentifier, '', $name);
-
- $args = func_get_args();
- $rgt = $lft = isset($args[1]) ? $args[1] : '';
- $rgt = isset($args[2]) ? $args[2] : $rgt;
-
- if(strpos($name, '.')===false)
- return $lft . $name . $rgt;
- $names=explode('.', $name);
- foreach($names as &$n)
- $n = $lft . $n . $rgt;
- return implode('.', $names);
- }
-
- /**
- * Quotes a column name for use in a query.
- * @param string $name column name
- * @param string $lft left delimiter
- * @param string $rgt right delimiter
- * @return string the properly quoted column name
- */
- public function quoteColumnName($name)
- {
- $args = func_get_args();
- $rgt = $lft = isset($args[1]) ? $args[1] : '';
- $rgt = isset($args[2]) ? $args[2] : $rgt;
-
- return $lft . str_replace(self::$delimiterIdentifier, '', $name) . $rgt;
- }
-
- /**
- * Quotes a column alias for use in a query.
- * @param string $name column alias
- * @param string $lft left delimiter
- * @param string $rgt right delimiter
- * @return string the properly quoted column alias
- */
- public function quoteColumnAlias($name)
- {
- $args = func_get_args();
- $rgt = $lft = isset($args[1]) ? $args[1] : '';
- $rgt = isset($args[2]) ? $args[2] : $rgt;
-
- return $lft . str_replace(self::$delimiterIdentifier, '', $name) . $rgt;
- }
-}
-
+ * @license http://www.pradosoft.com/license/
+ * @version $Id$
+ * @package System.Data.Common
+ */
+
+/**
+ * TDbMetaData is the base class for retrieving metadata information, such as
+ * table and columns information, from a database connection.
+ *
+ * Use the {@link getTableInfo} method to retrieve a table information.
+ *
+ * @author Wei Zhuo <weizho[at]gmail[dot]com>
+ * @version $Id$
+ * @package System.Data.Common
+ * @since 3.1
+ */
+abstract class TDbMetaData extends TComponent
+{
+ private $_tableInfoCache=array();
+ private $_connection;
+
+ /**
+ * @var array
+ */
+ protected static $delimiterIdentifier = array('[', ']', '"', '`', "'");
+
+ /**
+ * @param TDbConnection database connection.
+ */
+ public function __construct($conn)
+ {
+ $this->_connection=$conn;
+ }
+
+ /**
+ * @return TDbConnection database connection.
+ */
+ public function getDbConnection()
+ {
+ return $this->_connection;
+ }
+
+ /**
+ * Obtain database specific TDbMetaData class using the driver name of the database connection.
+ * @param TDbConnection database connection.
+ * @return TDbMetaData database specific TDbMetaData.
+ */
+ public static function getInstance($conn)
+ {
+ $conn->setActive(true); //must be connected before retrieving driver name
+ $driver = $conn->getDriverName();
+ switch(strtolower($driver))
+ {
+ case 'pgsql':
+ Prado::using('System.Data.Common.Pgsql.TPgsqlMetaData');
+ return new TPgsqlMetaData($conn);
+ case 'mysqli':
+ case 'mysql':
+ Prado::using('System.Data.Common.Mysql.TMysqlMetaData');
+ return new TMysqlMetaData($conn);
+ case 'sqlite': //sqlite 3
+ case 'sqlite2': //sqlite 2
+ Prado::using('System.Data.Common.Sqlite.TSqliteMetaData');
+ return new TSqliteMetaData($conn);
+ case 'mssql': // Mssql driver on windows hosts
+ case 'dblib': // dblib drivers on linux (and maybe others os) hosts
+ Prado::using('System.Data.Common.Mssql.TMssqlMetaData');
+ return new TMssqlMetaData($conn);
+ case 'oci':
+ Prado::using('System.Data.Common.Oracle.TOracleMetaData');
+ return new TOracleMetaData($conn);
+// case 'ibm':
+// Prado::using('System.Data.Common.IbmDb2.TIbmDb2MetaData');
+// return new TIbmDb2MetaData($conn);
+ default:
+ throw new TDbException('ar_invalid_database_driver',$driver);
+ }
+ }
+
+ /**
+ * Obtains table meta data information for the current connection and given table name.
+ * @param string table or view name
+ * @return TDbTableInfo table information.
+ */
+ public function getTableInfo($tableName=null)
+ {
+ $key = $tableName===null?$this->getDbConnection()->getConnectionString():$tableName;
+ if(!isset($this->_tableInfoCache[$key]))
+ {
+ $class = $this->getTableInfoClass();
+ $tableInfo = $tableName===null ? new $class : $this->createTableInfo($tableName);
+ $this->_tableInfoCache[$key] = $tableInfo;
+ }
+ return $this->_tableInfoCache[$key];
+ }
+
+ /**
+ * Creates a command builder for a given table name.
+ * @param string table name.
+ * @return TDbCommandBuilder command builder instance for the given table.
+ */
+ public function createCommandBuilder($tableName=null)
+ {
+ return $this->getTableInfo($tableName)->createCommandBuilder($this->getDbConnection());
+ }
+
+ /**
+ * This method should be implemented by decendent classes.
+ * @return TDbTableInfo driver dependent create builder.
+ */
+ abstract protected function createTableInfo($tableName);
+
+ /**
+ * @return string TDbTableInfo class name.
+ */
+ protected function getTableInfoClass()
+ {
+ return 'TDbTableInfo';
+ }
+
+ /**
+ * Quotes a table name for use in a query.
+ * @param string $name table name
+ * @param string $lft left delimiter
+ * @param string $rgt right delimiter
+ * @return string the properly quoted table name
+ */
+ public function quoteTableName($name)
+ {
+ $name = str_replace(self::$delimiterIdentifier, '', $name);
+
+ $args = func_get_args();
+ $rgt = $lft = isset($args[1]) ? $args[1] : '';
+ $rgt = isset($args[2]) ? $args[2] : $rgt;
+
+ if(strpos($name, '.')===false)
+ return $lft . $name . $rgt;
+ $names=explode('.', $name);
+ foreach($names as &$n)
+ $n = $lft . $n . $rgt;
+ return implode('.', $names);
+ }
+
+ /**
+ * Quotes a column name for use in a query.
+ * @param string $name column name
+ * @param string $lft left delimiter
+ * @param string $rgt right delimiter
+ * @return string the properly quoted column name
+ */
+ public function quoteColumnName($name)
+ {
+ $args = func_get_args();
+ $rgt = $lft = isset($args[1]) ? $args[1] : '';
+ $rgt = isset($args[2]) ? $args[2] : $rgt;
+
+ return $lft . str_replace(self::$delimiterIdentifier, '', $name) . $rgt;
+ }
+
+ /**
+ * Quotes a column alias for use in a query.
+ * @param string $name column alias
+ * @param string $lft left delimiter
+ * @param string $rgt right delimiter
+ * @return string the properly quoted column alias
+ */
+ public function quoteColumnAlias($name)
+ {
+ $args = func_get_args();
+ $rgt = $lft = isset($args[1]) ? $args[1] : '';
+ $rgt = isset($args[2]) ? $args[2] : $rgt;
+
+ return $lft . str_replace(self::$delimiterIdentifier, '', $name) . $rgt;
+ }
+}
+
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