Viewing file:  ADOConnection.php (6.21 KB) -rw-r--r--
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<?php
class ADOConnection extends Connection
{
/**
* A date format string
* @type String
*/
protected $access_dmy;
protected $ODBCString;
protected $errExeprionMess = "";
function __construct( $params )
{
parent::__construct( $params );
}
/**
* Set db connection's properties
* @param Array params
*/
protected function assignConnectionParams( $params )
{
parent::assignConnectionParams( $params );
$this->ODBCString = $params["ODBCString"];
}
/**
* Open a connection to db
*/
public function connect()
{
global $cCodepage;
try
{
$this->conn = new COM("ADODB.Connection", NULL, $cCodepage);
$this->conn->Open( $this->ODBCString );
if( $this->dbType == nDATABASE_Access )
{
$rs = $this->conn->Execute("select datevalue('2000-11-22') as qw");
$str = $rs->Fields[0]->Value;
$this->access_dmy = "mdy";
$y = strpos($str,"2000");
$m = strpos($str,"11");
$d = strpos($str,"22");
if( $y < $m && $m < $d )
$this->access_dmy = "ymd";
if( $d < $m && $m < $y )
$this->access_dmy = "dmy";
}
}
catch(Exception $e)
{
$this->triggerError( $e->getMessage() );
}
return $this->conn;
}
/**
* Close the db connection
*/
public function close()
{
$this->conn->Close();
}
/**
* Send an SQL query
* @param String sql
* @return Mixed
*/
public function query( $sql )
{
global $cCodepage;
$this->debugInfo($sql);
try
{
$recordset = new COM("ADODB.recordset", NULL, $cCodepage);
$recordset->Open($sql, $this->conn, 2);
return new QueryResult( $this, $recordset );
}
catch(com_exception $e)
{
$this->triggerError($e->getMessage());
}
return FALSE;
}
/**
* Execute an SQL query
* @param String sql
*/
public function exec( $sql )
{
$qResult = $this->query( $sql );
if( $qResult )
return $qResult->getQueryHandle();
return FALSE;
}
/**
* Get a description of the last error
* @return String
*/
public function lastError()
{
if( $this->conn->Errors->Count )
{
$description = $this->errExeprionMess;
$this->errExeprionMess = "";
return $description." ".$this->conn->Errors[ $this->conn->Errors->Count - 1 ]->Description;
}
return '';
}
/**
* The stub openSchema method overrided in the ADO connection class
* @param Number
* @return Mixed
*/
public function openSchema( $querytype )
{
$recordset = $this->conn->OpenSchema( $querytype );
return new QueryResult( $this, $recordset );
}
/**
* Fetch a result row as an array
* @param Mixed qHanle The query handle
* @param Number assoc (optional)
* @return Array
*/
protected function _fetch_array( $qHandle, $assoc = 1 )
{
$ret = array();
if( $qHandle->EOF() )
return false;
try {
for( $i = 0; $i < $this->num_fields( $qHandle ); $i++ )
{
if( IsBinaryType( $qHandle->Fields[$i]->Type ) && $qHandle->Fields[$i]->Type != 128 || $qHandle->Fields[$i]->Type == 203 )
{
$str = "";
if( $qHandle->Fields[$i]->ActualSize > 0 )
{
$size = $qHandle->Fields[$i]->ActualSize;
$val = $qHandle->Fields[$i]->GetChunk( $size );
if( is_array($val) || is_object($val) )
{
$str = str_pad("", $size);
$j = 0;
foreach($val as $byte)
{
$str[ $j++ ] = chr($byte);
}
}
else
$str = $val;
}
if( $assoc )
$ret[ $qHandle->Fields[$i]->Name ] = $str;
else
$ret[ $i ] = $str;
}
else
{
$value = $qHandle->Fields[$i]->Value;
if( is_null($value) )
$val = NULL;
else
{
if( isdatefieldtype( $qHandle->Fields[$i]->Type ) )
$value = localdatetime2db( (string)$qHandle->Fields[$i]->Value, $this->access_dmy );
if( IsNumberType( $qHandle->Fields[$i]->Type ) )
$val = floatval($value);
else
$val = strval($value);
}
if( $assoc )
$ret[ $qHandle->Fields[$i]->Name ] = $val;
else
$ret[ $i ] = $val;
}
}
$qHandle->MoveNext();
}
catch(com_exception $e)
{
$this->triggerError($e->getMessage() );
}
return $ret;
}
/**
* Fetch a result row as an associative array
* @param Mixed qHanle The query handle
* @return Array | Boolean
*/
public function fetch_array( $qHandle )
{
return $this->_fetch_array($qHandle, 1);
}
/**
* Fetch a result row as a numeric array
* @param Mixed qHanle The query handle
* @return Array | Boolean
*/
public function fetch_numarray( $qHandle )
{
return $this->_fetch_array($qHandle, 0);
}
/**
* Free resources associated with a query result set
* @param Mixed qHanle The query handle
*/
public function closeQuery( $qHandle )
{
$qHandle->Close();
}
/**
* Get number of fields in a result
* @param Mixed qHanle The query handle
* @return Number
*/
public function num_fields( $qHandle )
{
return $qHandle->Fields->Count;
}
/**
* Get the name of the specified field in a result
* @param Mixed qHanle The query handle
* @param Number offset
* @return String
*/
public function field_name( $qHandle, $offset )
{
return $qHandle->Fields( $offset )->Name;
}
/**
* @param Mixed qHandle
* @param Number pageSize
* @param Number page
*/
public function seekRecord($qHandle, $n )
{
if( $page == 1 )
return;
if( $qHandle->EOF() )
return;
$qHandle->Move( $n );
}
/**
* Execute an SQL query with blob fields processing
* @param String sql
* @param Array blobs
* @param Array blobTypes
* @return Boolean
*/
public function execWithBlobProcessing( $sql, $blobs, $blobTypes = array() )
{
global $cCodepage;
$this->debugInfo($sql);
try
{
$recordset = new COM("ADODB.recordset", NULL, $cCodepage);
$recordset->Open($sql, $this->conn, 2);
return true;
}
catch(com_exception $e)
{
$this->errExeprionMess = $e->getMessage();
return false;
}
}
}
?>
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