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<?php
/**
* TIbmMetaDataInspector class file.
*
* @author Cesar Ramos <cramos[at]gmail[dot]com>
* @link http://www.pradosoft.com/
* @copyright Copyright © 2005-2008 PradoSoft
* @license http://www.pradosoft.com/license/
* @version $Id: TIbmMetaDataInspector.php 1807 2007-03-31 06:42:15Z wei $
* @package System.Data.ActiveRecord.Vendor
*/
Prado::using('System.Data.ActiveRecord.Vendor.TDbMetaDataInspector');
Prado::using('System.Data.ActiveRecord.Vendor.TIbmColumnMetaData');
Prado::using('System.Data.ActiveRecord.Vendor.TIbmMetaData');
/**
* TIbmMetaDataInspector class.
*
* Column details for IBM DB2 database. Using php_pdo_ibm.dll extension.
*
* @author Cesar Ramos <cramos[at]gmail[dot]com>
* @version $Id: TIbmMetaDataInspector.php 1807 2007-03-31 06:42:15Z wei $
* @package System.Data.ActiveRecord.Vendor
* @since 3.1
*/
class TIbmMetaDataInspector extends TDbMetaDataInspector
{
private $_schema;
/**
* @param string default schema.
*/
public function setSchema($schema)
{
$this->_schema=$schema;
}
/**
* @return string default schema.
*/
public function getSchema()
{
return $this->_schema;
}
/**
* Get the column definitions for given table.
* @param string table name.
* @return array column name value pairs of column meta data.
*/
protected function getColumnDefinitions($table)
{
if(count($parts= explode('.', $table)) > 1)
{
$tablename = $parts[1];
$schema = $parts[0];
}
else
{
$tablename = $parts[0];
$schema = $this->getSchema();
}
$sql="SELECT * FROM SYSCAT.COLUMNS WHERE TABNAME='".strtoupper($tablename)."'";
if ($schema)
$sql=$sql." AND TABSCHEMA='".strtoupper($schema)."'";
$conn = $this->getDbConnection();
$conn->setActive(true);
$command = $conn->createCommand($sql);
$command->prepare();
$result=$command->query($sql);
foreach ($result as $col)
$cols[strtolower($col['COLNAME'])] = $this->getColumnMetaData($col);
return $cols;
}
protected function getColumnMetaData($col)
{
$name = strtolower($col['COLNAME']);
$type = $col['TYPENAME'];
$length = $col['LENGTH'];
$notNull = $col['NULLS']==='N'?1:0;
$autoIncrement=$col['IDENTITY']==='Y'?1:0;
$default = $col['DEFAULT'];
$primaryKey = $col['KEYSEQ']?1:0;
return new TIbmColumnMetaData($name,$type,$length,$notNull,$autoIncrement,$default,$primaryKey);
}
/**
* Not implemented, IBM does not always have foreign key constraints.
*/
protected function getConstraintKeys($table)
{
return array('primary'=>array(), 'foreign'=>array());
}
/**
* Create a new instance of meta data.
* @param string table name
* @param array column meta data
* @param array primary key meta data
* @param array foreign key meta data.
* @return TDbMetaData table meta data.
*/
protected function createMetaData($table, $columns, $primary, $foreign)
{
$pks = array();
foreach($columns as $name=>$column)
if($column->getIsPrimaryKey())
$pks[] = $name;
return new TIbmMetaData($table,$columns,$pks);
}
}
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