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cvsjoko |
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<?php |
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// +----------------------------------------------------------------------+ |
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// | PHP Version 4 | |
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// +----------------------------------------------------------------------+ |
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// | Copyright (c) 1997-2002 The PHP Group | |
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// +----------------------------------------------------------------------+ |
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// | This source file is subject to version 2.02 of the PHP license, | |
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// | that is bundled with this package in the file LICENSE, and is | |
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// | available at through the world-wide-web at | |
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// | http://www.php.net/license/2_02.txt. | |
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// | If you did not receive a copy of the PHP license and are unable to | |
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// | obtain it through the world-wide-web, please send a note to | |
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// | license@php.net so we can mail you a copy immediately. | |
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// +----------------------------------------------------------------------+ |
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// | Author: James L. Pine <jlp@valinux.com> | |
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// +----------------------------------------------------------------------+ |
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// |
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// $Id: oci8.php,v 1.47.2.1 2002/04/09 19:04:15 ssb Exp $ |
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// |
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// Database independent query interface definition for PHP's Oracle 8 |
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// call-interface extension. |
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// |
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// |
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// be aware... OCIError() only appears to return anything when given a |
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// statement, so functions return the generic DB_ERROR instead of more |
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// useful errors that have to do with feedback from the database. |
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// |
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require_once 'DB/common.php'; |
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class DB_oci8 extends DB_common |
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{ |
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// {{{ properties |
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var $connection; |
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var $phptype, $dbsyntax; |
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var $manip_query = array(); |
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var $prepare_types = array(); |
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var $autoCommit = 1; |
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var $last_stmt = false; |
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// }}} |
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// {{{ constructor |
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function DB_oci8() |
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{ |
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$this->DB_common(); |
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$this->phptype = 'oci8'; |
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$this->dbsyntax = 'oci8'; |
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$this->features = array( |
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'prepare' => false, |
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'pconnect' => true, |
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'transactions' => true, |
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'limit' => 'alter' |
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); |
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$this->errorcode_map = array( |
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900 => DB_ERROR_SYNTAX, |
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904 => DB_ERROR_NOSUCHFIELD, |
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923 => DB_ERROR_SYNTAX, |
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942 => DB_ERROR_NOSUCHTABLE, |
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955 => DB_ERROR_ALREADY_EXISTS, |
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1476 => DB_ERROR_DIVZERO, |
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1722 => DB_ERROR_INVALID_NUMBER, |
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2289 => DB_ERROR_NOSUCHTABLE, |
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2291 => DB_ERROR_CONSTRAINT, |
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2449 => DB_ERROR_CONSTRAINT, |
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); |
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} |
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// }}} |
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// {{{ connect() |
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/** |
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* Connect to a database and log in as the specified user. |
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* |
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* @param $dsn the data source name (see DB::parseDSN for syntax) |
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* @param $persistent (optional) whether the connection should |
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* be persistent |
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* |
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* @return int DB_OK on success, a DB error code on failure |
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*/ |
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function connect($dsninfo, $persistent = false) |
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{ |
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if (!DB::assertExtension('oci8')) { |
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return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND); |
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} |
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$this->dsn = $dsninfo; |
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$user = $dsninfo['username']; |
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$pw = $dsninfo['password']; |
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$hostspec = $dsninfo['hostspec']; |
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$connect_function = $persistent ? 'OCIPLogon' : 'OCILogon'; |
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if ($hostspec) { |
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$conn = @$connect_function($user,$pw,$hostspec); |
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} elseif ($user || $pw) { |
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$conn = @$connect_function($user,$pw); |
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} else { |
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$conn = false; |
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} |
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if ($conn == false) { |
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$error = OCIError(); |
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$error = (is_array($error)) ? $error['message'] : null; |
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return $this->raiseError(DB_ERROR_CONNECT_FAILED, null, null, |
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null, $error); |
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} |
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$this->connection = $conn; |
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return DB_OK; |
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} |
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// }}} |
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// {{{ disconnect() |
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/** |
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* Log out and disconnect from the database. |
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* |
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* @return bool TRUE on success, FALSE if not connected. |
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*/ |
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function disconnect() |
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{ |
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$ret = @OCILogOff($this->connection); |
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$this->connection = null; |
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return $ret; |
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} |
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// }}} |
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// {{{ simpleQuery() |
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/** |
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* Send a query to oracle and return the results as an oci8 resource |
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* identifier. |
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* |
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* @param $query the SQL query |
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* |
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* @return int returns a valid oci8 result for successful SELECT |
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* queries, DB_OK for other successful queries. A DB error code |
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* is returned on failure. |
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*/ |
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function simpleQuery($query) |
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{ |
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$this->last_query = $query; |
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$query = $this->modifyQuery($query); |
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$result = @OCIParse($this->connection, $query); |
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if (!$result) { |
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return $this->oci8RaiseError(); |
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} |
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if ($this->autoCommit) { |
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$success = @OCIExecute($result,OCI_COMMIT_ON_SUCCESS); |
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} else { |
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$success = @OCIExecute($result,OCI_DEFAULT); |
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} |
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if (!$success) { |
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return $this->oci8RaiseError($result); |
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} |
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$this->last_stmt=$result; |
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// Determine which queries that should return data, and which |
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// should return an error code only. |
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return DB::isManip($query) ? DB_OK : $result; |
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} |
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// }}} |
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// {{{ nextResult() |
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/** |
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* Move the internal oracle result pointer to the next available result |
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* |
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* @param a valid oci8 result resource |
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* |
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* @access public |
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* |
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* @return true if a result is available otherwise return false |
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*/ |
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function nextResult($result) |
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{ |
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return false; |
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} |
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// }}} |
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// {{{ fetchRow() |
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/** |
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* Fetch a row and return as array. |
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* |
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* @param $result oci8 result identifier |
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* @param $fetchmode how the resulting array should be indexed |
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* |
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* @return int an array on success, a DB error code on failure, NULL |
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* if there is no more data |
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*/ |
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function &fetchRow($result, $fetchmode = DB_FETCHMODE_DEFAULT) |
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{ |
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if ($fetchmode == DB_FETCHMODE_DEFAULT) { |
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$fetchmode = $this->fetchmode; |
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} |
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if ($fetchmode & DB_FETCHMODE_ASSOC) { |
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$moredata = @OCIFetchInto($result, $row, OCI_ASSOC + OCI_RETURN_NULLS + OCI_RETURN_LOBS); |
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} else { |
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$moredata = @OCIFetchInto($result, $row, OCI_RETURN_NULLS + OCI_RETURN_LOBS); |
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} |
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if (!$moredata) { |
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return NULL; |
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} |
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return $row; |
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} |
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// }}} |
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// {{{ fetchInto() |
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/** |
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* Fetch a row and insert the data into an existing array. |
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* |
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* @param $result oci8 result identifier |
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* @param $arr (reference) array where data from the row is stored |
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* @param $fetchmode how the array data should be indexed |
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* @param $rownum the row number to fetch (not yet supported) |
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* |
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* @return int DB_OK on success, a DB error code on failure |
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*/ |
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function fetchInto($result, &$arr, $fetchmode = DB_FETCHMODE_DEFAULT, $rownum=NULL) |
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{ |
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if ($rownum !== NULL) { |
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return $this->raiseError(DB_ERROR_NOT_CAPABLE); |
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} |
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if ($fetchmode & DB_FETCHMODE_ASSOC) { |
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$moredata = @OCIFetchInto($result,$arr,OCI_ASSOC+OCI_RETURN_NULLS+OCI_RETURN_LOBS); |
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if ($moredata && $this->options['optimize'] == 'portability') { |
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$arr = array_change_key_case($arr, CASE_LOWER); |
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} |
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} else { |
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$moredata = @OCIFetchInto($result,$arr,OCI_RETURN_NULLS+OCI_RETURN_LOBS); |
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} |
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if (!$moredata) { |
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return NULL; |
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} |
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return DB_OK; |
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} |
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// }}} |
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// {{{ freeResult() |
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/** |
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* Free the internal resources associated with $result. |
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* |
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* @param $result oci8 result identifier or DB statement identifier |
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* |
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* @return bool TRUE on success, FALSE if $result is invalid |
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*/ |
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function freeResult($result) |
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{ |
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if (is_resource($result)) { |
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return @OCIFreeStatement($result); |
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} |
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if (!isset($this->prepare_tokens[(int)$result])) { |
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return false; |
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} |
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unset($this->prepare_tokens[(int)$result]); |
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unset($this->prepare_types[(int)$result]); |
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unset($this->manip_query[(int)$result]); |
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return true; |
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} |
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// }}} |
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// {{{ numRows() |
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function numRows($result) |
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{ |
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// emulate numRows for Oracle. yuck. |
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if ($this->options['optimize'] == 'portability' && |
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$result === $this->last_stmt) { |
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$countquery = preg_replace('/^\s*SELECT\s+(.*?)\s+FROM\s+/is', |
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'SELECT COUNT(*) FROM ', |
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$this->last_query); |
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$save_query = $this->last_query; |
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$save_stmt = $this->last_stmt; |
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$count = $this->query($countquery); |
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if (DB::isError($count) || |
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DB::isError($row = $count->fetchRow(DB_FETCHMODE_ORDERED))) |
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{ |
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$this->last_query = $save_query; |
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$this->last_stmt = $save_stmt; |
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return $this->raiseError(DB_ERROR_NOT_CAPABLE); |
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} |
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return $row[0]; |
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} |
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return $this->raiseError(DB_ERROR_NOT_CAPABLE); |
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} |
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// }}} |
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// {{{ numCols() |
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/** |
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* Get the number of columns in a result set. |
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* |
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* @param $result oci8 result identifier |
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* |
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* @return int the number of columns per row in $result |
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*/ |
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function numCols($result) |
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{ |
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$cols = @OCINumCols($result); |
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if (!$cols) { |
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return $this->oci8RaiseError($result); |
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} |
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return $cols; |
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} |
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// }}} |
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// {{{ errorNative() |
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/** |
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* Get the native error code of the last error (if any) that occured |
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* on the current connection. This does not work, as OCIError does |
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* not work unless given a statement. If OCIError does return |
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* something, so will this. |
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* |
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* @return int native oci8 error code |
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*/ |
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function errorNative() |
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{ |
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if (is_resource($this->last_stmt)) { |
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$error = @OCIError($this->last_stmt); |
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} else { |
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$error = @OCIError($this->connection); |
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} |
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if (is_array($error)) { |
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return $error['code']; |
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} |
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return false; |
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} |
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// }}} |
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// {{{ prepare() |
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/** |
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* Prepares a query for multiple execution with execute(). With |
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* oci8, this is emulated. |
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* @param $query query to be prepared |
341 |
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* |
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* @return DB statement resource |
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*/ |
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function prepare($query) |
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{ |
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$tokens = split('[\&\?]', $query); |
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$token = 0; |
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$types = array(); |
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for ($i = 0; $i < strlen($query); $i++) { |
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switch ($query[$i]) { |
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case '?': |
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$types[$token++] = DB_PARAM_SCALAR; |
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break; |
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case '&': |
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$types[$token++] = DB_PARAM_OPAQUE; |
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break; |
357 |
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} |
358 |
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} |
359 |
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$binds = sizeof($tokens) - 1; |
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$newquery = ''; |
361 |
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for ($i = 0; $i < $binds; $i++) { |
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$newquery .= $tokens[$i] . ":bind" . $i; |
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} |
364 |
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$newquery .= $tokens[$i]; |
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$this->last_query = $query; |
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$newquery = $this->modifyQuery($newquery); |
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$stmt = @OCIParse($this->connection, $newquery); |
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$this->prepare_types[$stmt] = $types; |
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$this->manip_query[(int)$stmt] = DB::isManip($query); |
370 |
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return $stmt; |
371 |
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} |
372 |
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373 |
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// }}} |
374 |
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// {{{ execute() |
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376 |
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/** |
377 |
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* Executes a DB statement prepared with prepare(). |
378 |
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* |
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* @param $stmt a DB statement resource (returned from prepare()) |
380 |
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* @param $data data to be used in execution of the statement |
381 |
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* |
382 |
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* @return int returns an oci8 result resource for successful |
383 |
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* SELECT queries, DB_OK for other successful queries. A DB error |
384 |
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* code is returned on failure. |
385 |
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*/ |
386 |
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function execute($stmt, $data = false) |
387 |
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{ |
388 |
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$types=&$this->prepare_types[$stmt]; |
389 |
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if (($size = sizeof($types)) != sizeof($data)) { |
390 |
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return $this->raiseError(DB_ERROR_MISMATCH); |
391 |
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} |
392 |
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for ($i = 0; $i < $size; $i++) { |
393 |
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if (is_array($data)) { |
394 |
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$pdata[$i] = &$data[$i]; |
395 |
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} |
396 |
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else { |
397 |
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$pdata[$i] = &$data; |
398 |
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} |
399 |
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if ($types[$i] == DB_PARAM_OPAQUE) { |
400 |
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$fp = fopen($pdata[$i], "r"); |
401 |
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$pdata[$i] = ''; |
402 |
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if ($fp) { |
403 |
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while (($buf = fread($fp, 4096)) != false) { |
404 |
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$pdata[$i] .= $buf; |
405 |
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} |
406 |
|
|
} |
407 |
|
|
} |
408 |
|
|
if (!@OCIBindByName($stmt, ":bind" . $i, $pdata[$i], -1)) { |
409 |
|
|
return $this->oci8RaiseError($stmt); |
410 |
|
|
} |
411 |
|
|
} |
412 |
|
|
if ($this->autoCommit) { |
413 |
|
|
$success = @OCIExecute($stmt, OCI_COMMIT_ON_SUCCESS); |
414 |
|
|
} |
415 |
|
|
else { |
416 |
|
|
$success = @OCIExecute($stmt, OCI_DEFAULT); |
417 |
|
|
} |
418 |
|
|
if (!$success) { |
419 |
|
|
return $this->oci8RaiseError($stmt); |
420 |
|
|
} |
421 |
|
|
$this->last_stmt = $stmt; |
422 |
|
|
if ($this->manip_query[(int)$stmt]) { |
423 |
|
|
return DB_OK; |
424 |
|
|
} else { |
425 |
|
|
return new DB_result($this, $stmt); |
426 |
|
|
} |
427 |
|
|
} |
428 |
|
|
|
429 |
|
|
// }}} |
430 |
|
|
// {{{ autoCommit() |
431 |
|
|
|
432 |
|
|
/** |
433 |
|
|
* Enable/disable automatic commits |
434 |
|
|
* |
435 |
|
|
* @param $onoff true/false whether to autocommit |
436 |
|
|
*/ |
437 |
|
|
function autoCommit($onoff = false) |
438 |
|
|
{ |
439 |
|
|
$this->autoCommit = (bool)$onoff;; |
440 |
|
|
return DB_OK; |
441 |
|
|
} |
442 |
|
|
|
443 |
|
|
// }}} |
444 |
|
|
// {{{ commit() |
445 |
|
|
|
446 |
|
|
/** |
447 |
|
|
* Commit transactions on the current connection |
448 |
|
|
* |
449 |
|
|
* @return DB_ERROR or DB_OK |
450 |
|
|
*/ |
451 |
|
|
function commit() |
452 |
|
|
{ |
453 |
|
|
$result = @OCICommit($this->connection); |
454 |
|
|
if (!$result) { |
455 |
|
|
return $this->oci8RaiseError(); |
456 |
|
|
} |
457 |
|
|
return DB_OK; |
458 |
|
|
} |
459 |
|
|
|
460 |
|
|
// }}} |
461 |
|
|
// {{{ rollback() |
462 |
|
|
|
463 |
|
|
/** |
464 |
|
|
* Roll back all uncommitted transactions on the current connection. |
465 |
|
|
* |
466 |
|
|
* @return DB_ERROR or DB_OK |
467 |
|
|
*/ |
468 |
|
|
function rollback() |
469 |
|
|
{ |
470 |
|
|
$result = @OCIRollback($this->connection); |
471 |
|
|
if (!$result) { |
472 |
|
|
return $this->oci8RaiseError(); |
473 |
|
|
} |
474 |
|
|
return DB_OK; |
475 |
|
|
} |
476 |
|
|
|
477 |
|
|
// }}} |
478 |
|
|
// {{{ affectedRows() |
479 |
|
|
|
480 |
|
|
/** |
481 |
|
|
* Gets the number of rows affected by the last query. |
482 |
|
|
* if the last query was a select, returns 0. |
483 |
|
|
* |
484 |
|
|
* @return number of rows affected by the last query or DB_ERROR |
485 |
|
|
*/ |
486 |
|
|
function affectedRows() |
487 |
|
|
{ |
488 |
|
|
if ($this->last_stmt === false) { |
489 |
|
|
return $this->oci8RaiseError(); |
490 |
|
|
} |
491 |
|
|
$result = @OCIRowCount($this->last_stmt); |
492 |
|
|
if ($result === false) { |
493 |
|
|
return $this->oci8RaiseError($this->last_stmt); |
494 |
|
|
} |
495 |
|
|
return $result; |
496 |
|
|
} |
497 |
|
|
|
498 |
|
|
// }}} |
499 |
|
|
// {{{ modifyQuery() |
500 |
|
|
|
501 |
|
|
function modifyQuery($query) |
502 |
|
|
{ |
503 |
|
|
// "SELECT 2+2" must be "SELECT 2+2 FROM dual" in Oracle |
504 |
|
|
if (preg_match('/^\s*SELECT/i', $query) && |
505 |
|
|
!preg_match('/\sFROM\s/i', $query)) { |
506 |
|
|
$query .= " FROM dual"; |
507 |
|
|
} |
508 |
|
|
return $query; |
509 |
|
|
} |
510 |
|
|
|
511 |
|
|
// }}} |
512 |
|
|
// {{{ modifyLimitQuery() |
513 |
|
|
|
514 |
|
|
/** |
515 |
|
|
* Emulate the row limit support altering the query |
516 |
|
|
* |
517 |
|
|
* @param string $query The query to treat |
518 |
|
|
* @param int $from The row to start to fetch from |
519 |
|
|
* @param int $count The offset |
520 |
|
|
* @return string The modified query |
521 |
|
|
* |
522 |
|
|
* @author Tomas V.V.Cox <cox@idecnet.com> |
523 |
|
|
*/ |
524 |
|
|
function modifyLimitQuery($query, $from, $count) |
525 |
|
|
{ |
526 |
|
|
// Let Oracle return the name of the columns instead of |
527 |
|
|
// coding a "home" SQL parser |
528 |
|
|
$q_fields = "SELECT * FROM ($query) WHERE NULL = NULL"; |
529 |
|
|
if (!$result = OCIParse($this->connection, $q_fields)) { |
530 |
|
|
return $this->oci8RaiseError(); |
531 |
|
|
} |
532 |
|
|
if (!OCIExecute($result, OCI_DEFAULT)) { |
533 |
|
|
return $this->oci8RaiseError($result); |
534 |
|
|
} |
535 |
|
|
$ncols = OCINumCols($result); |
536 |
|
|
$cols = array(); |
537 |
|
|
for ( $i = 1; $i <= $ncols; $i++ ) { |
538 |
|
|
$cols[] = OCIColumnName($result, $i); |
539 |
|
|
} |
540 |
|
|
$fields = implode(', ', $cols); |
541 |
|
|
// XXX Test that (tip by John Lim) |
542 |
|
|
//if(preg_match('/^\s*SELECT\s+/is', $query, $match)) { |
543 |
|
|
// // Introduce the FIRST_ROWS Oracle query optimizer |
544 |
|
|
// $query = substr($query, strlen($match[0]), strlen($query)); |
545 |
|
|
// $query = "SELECT /* +FIRST_ROWS */ " . $query; |
546 |
|
|
//} |
547 |
|
|
|
548 |
|
|
// Construct the query |
549 |
|
|
// more at: http://marc.theaimsgroup.com/?l=php-db&m=99831958101212&w=2 |
550 |
|
|
// Perhaps this could be optimized with the use of Unions |
551 |
|
|
$from += 1; // in Oracle rownum starts at 1 |
552 |
|
|
$query = "SELECT $fields FROM". |
553 |
|
|
" (SELECT rownum as linenum, $fields FROM". |
554 |
|
|
" ($query)". |
555 |
|
|
" WHERE rownum <= ". ($from + $count) . |
556 |
|
|
") WHERE linenum >= $from"; |
557 |
|
|
return $query; |
558 |
|
|
} |
559 |
|
|
|
560 |
|
|
// }}} |
561 |
|
|
// {{{ nextId() |
562 |
|
|
|
563 |
|
|
/** |
564 |
|
|
* Get the next value in a sequence. We emulate sequences |
565 |
|
|
* for MySQL. Will create the sequence if it does not exist. |
566 |
|
|
* |
567 |
|
|
* @access public |
568 |
|
|
* |
569 |
|
|
* @param $seq_name the name of the sequence |
570 |
|
|
* |
571 |
|
|
* @param $ondemand whether to create the sequence table on demand |
572 |
|
|
* (default is true) |
573 |
|
|
* |
574 |
|
|
* @return a sequence integer, or a DB error |
575 |
|
|
*/ |
576 |
|
|
function nextId($seq_name, $ondemand = true) |
577 |
|
|
{ |
578 |
|
|
$seqname = $this->getSequenceName($seq_name); |
579 |
|
|
$repeat = 0; |
580 |
|
|
do { |
581 |
|
|
$this->expectError(DB_ERROR_NOSUCHTABLE); |
582 |
|
|
$result = $this->query("SELECT ${seqname}.nextval FROM dual"); |
583 |
|
|
$this->popExpect(); |
584 |
|
|
if ($ondemand && DB::isError($result) && |
585 |
|
|
$result->getCode() == DB_ERROR_NOSUCHTABLE) { |
586 |
|
|
$repeat = 1; |
587 |
|
|
$result = $this->createSequence($seq_name); |
588 |
|
|
if (DB::isError($result)) { |
589 |
|
|
return $this->raiseError($result); |
590 |
|
|
} |
591 |
|
|
} else { |
592 |
|
|
$repeat = 0; |
593 |
|
|
} |
594 |
|
|
} while ($repeat); |
595 |
|
|
if (DB::isError($result)) { |
596 |
|
|
return $this->raiseError($result); |
597 |
|
|
} |
598 |
|
|
$arr = $result->fetchRow(DB_FETCHMODE_ORDERED); |
599 |
|
|
return $arr[0]; |
600 |
|
|
} |
601 |
|
|
|
602 |
|
|
// }}} |
603 |
|
|
// {{{ createSequence() |
604 |
|
|
|
605 |
|
|
function createSequence($seq_name) |
606 |
|
|
{ |
607 |
|
|
$seqname = $this->getSequenceName($seq_name); |
608 |
|
|
return $this->query("CREATE SEQUENCE ${seqname}"); |
609 |
|
|
} |
610 |
|
|
|
611 |
|
|
// }}} |
612 |
|
|
// {{{ dropSequence() |
613 |
|
|
|
614 |
|
|
function dropSequence($seq_name) |
615 |
|
|
{ |
616 |
|
|
$seqname = $this->getSequenceName($seq_name); |
617 |
|
|
return $this->query("DROP SEQUENCE ${seqname}"); |
618 |
|
|
} |
619 |
|
|
|
620 |
|
|
// }}} |
621 |
|
|
// {{{ oci8RaiseError() |
622 |
|
|
|
623 |
|
|
function oci8RaiseError($errno = null) |
624 |
|
|
{ |
625 |
|
|
if ($errno === null) { |
626 |
|
|
$error = @OCIError($this->connection); |
627 |
|
|
return $this->raiseError($this->errorCode($error['code']), |
628 |
|
|
null, null, null, $error['message']); |
629 |
|
|
} elseif (is_resource($errno)) { |
630 |
|
|
$error = @OCIError($errno); |
631 |
|
|
return $this->raiseError($this->errorCode($error['code']), |
632 |
|
|
null, null, null, $error['message']); |
633 |
|
|
} |
634 |
|
|
return $this->raiseError($this->errorCode($errno)); |
635 |
|
|
} |
636 |
|
|
|
637 |
|
|
// }}} |
638 |
|
|
// {{{ getSpecialQuery() |
639 |
|
|
|
640 |
|
|
/** |
641 |
|
|
* Returns the query needed to get some backend info |
642 |
|
|
* @param string $type What kind of info you want to retrieve |
643 |
|
|
* @return string The SQL query string |
644 |
|
|
*/ |
645 |
|
|
function getSpecialQuery($type) |
646 |
|
|
{ |
647 |
|
|
switch ($type) { |
648 |
|
|
case 'tables': |
649 |
|
|
$sql = "SELECT table_name FROM user_tables"; |
650 |
|
|
break; |
651 |
|
|
default: |
652 |
|
|
return null; |
653 |
|
|
} |
654 |
|
|
return $sql; |
655 |
|
|
} |
656 |
|
|
|
657 |
|
|
// }}} |
658 |
|
|
|
659 |
|
|
} |
660 |
|
|
// Local variables: |
661 |
|
|
// tab-width: 4 |
662 |
|
|
// c-basic-offset: 4 |
663 |
|
|
// End: |
664 |
|
|
?> |