- Removed support for PEAR::DB driver

1 files changed, 0 insertions, 1156 deletions

diff --git a/program/lib/DB/oci8.php b/program/lib/DB/oci8.php
deleted file mode 100644
index f2f8e3d4c..000000000
--- a/program/lib/DB/oci8.php
+++ /dev/null
@@ -1,1156 +0,0 @@
-<?php
-
-/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
-
-/**
- * The PEAR DB driver for PHP's oci8 extension
- * for interacting with Oracle databases
- *
- * PHP versions 4 and 5
- *
- * LICENSE: This source file is subject to version 3.0 of the PHP license
- * that is available through the world-wide-web at the following URI:
- * http://www.php.net/license/3_0.txt.  If you did not receive a copy of
- * the PHP License and are unable to obtain it through the web, please
- * send a note to license@php.net so we can mail you a copy immediately.
- *
- * @category   Database
- * @package    DB
- * @author     James L. Pine <jlp@valinux.com>
- * @author     Daniel Convissor <danielc@php.net>
- * @copyright  1997-2007 The PHP Group
- * @license    http://www.php.net/license/3_0.txt  PHP License 3.0
- * @version    CVS: $Id$
- * @link       http://pear.php.net/package/DB
- */
-
-/**
- * Obtain the DB_common class so it can be extended from
- */
-require_once 'DB/common.php';
-
-/**
- * The methods PEAR DB uses to interact with PHP's oci8 extension
- * for interacting with Oracle databases
- *
- * Definitely works with versions 8 and 9 of Oracle.
- *
- * These methods overload the ones declared in DB_common.
- *
- * Be aware...  OCIError() only appears to return anything when given a
- * statement, so functions return the generic DB_ERROR instead of more
- * useful errors that have to do with feedback from the database.
- *
- * @category   Database
- * @package    DB
- * @author     James L. Pine <jlp@valinux.com>
- * @author     Daniel Convissor <danielc@php.net>
- * @copyright  1997-2007 The PHP Group
- * @license    http://www.php.net/license/3_0.txt  PHP License 3.0
- * @version    Release: 1.7.13
- * @link       http://pear.php.net/package/DB
- */
-class DB_oci8 extends DB_common
-{
-    // {{{ properties
-
-    /**
-     * The DB driver type (mysql, oci8, odbc, etc.)
-     * @var string
-     */
-    var $phptype = 'oci8';
-
-    /**
-     * The database syntax variant to be used (db2, access, etc.), if any
-     * @var string
-     */
-    var $dbsyntax = 'oci8';
-
-    /**
-     * The capabilities of this DB implementation
-     *
-     * The 'new_link' element contains the PHP version that first provided
-     * new_link support for this DBMS.  Contains false if it's unsupported.
-     *
-     * Meaning of the 'limit' element:
-     *   + 'emulate' = emulate with fetch row by number
-     *   + 'alter'   = alter the query
-     *   + false     = skip rows
-     *
-     * @var array
-     */
-    var $features = array(
-        'limit'         => 'alter',
-        'new_link'      => '5.0.0',
-        'numrows'       => 'subquery',
-        'pconnect'      => true,
-        'prepare'       => true,
-        'ssl'           => false,
-        'transactions'  => true,
-    );
-
-    /**
-     * A mapping of native error codes to DB error codes
-     * @var array
-     */
-    var $errorcode_map = array(
-        1     => DB_ERROR_CONSTRAINT,
-        900   => DB_ERROR_SYNTAX,
-        904   => DB_ERROR_NOSUCHFIELD,
-        913   => DB_ERROR_VALUE_COUNT_ON_ROW,
-        921   => DB_ERROR_SYNTAX,
-        923   => DB_ERROR_SYNTAX,
-        942   => DB_ERROR_NOSUCHTABLE,
-        955   => DB_ERROR_ALREADY_EXISTS,
-        1400  => DB_ERROR_CONSTRAINT_NOT_NULL,
-        1401  => DB_ERROR_INVALID,
-        1407  => DB_ERROR_CONSTRAINT_NOT_NULL,
-        1418  => DB_ERROR_NOT_FOUND,
-        1476  => DB_ERROR_DIVZERO,
-        1722  => DB_ERROR_INVALID_NUMBER,
-        2289  => DB_ERROR_NOSUCHTABLE,
-        2291  => DB_ERROR_CONSTRAINT,
-        2292  => DB_ERROR_CONSTRAINT,
-        2449  => DB_ERROR_CONSTRAINT,
-        12899 => DB_ERROR_INVALID,
-    );
-
-    /**
-     * The raw database connection created by PHP
-     * @var resource
-     */
-    var $connection;
-
-    /**
-     * The DSN information for connecting to a database
-     * @var array
-     */
-    var $dsn = array();
-
-
-    /**
-     * Should data manipulation queries be committed automatically?
-     * @var bool
-     * @access private
-     */
-    var $autocommit = true;
-
-    /**
-     * Stores the $data passed to execute() in the oci8 driver
-     *
-     * Gets reset to array() when simpleQuery() is run.
-     *
-     * Needed in case user wants to call numRows() after prepare/execute
-     * was used.
-     *
-     * @var array
-     * @access private
-     */
-    var $_data = array();
-
-    /**
-     * The result or statement handle from the most recently executed query
-     * @var resource
-     */
-    var $last_stmt;
-
-    /**
-     * Is the given prepared statement a data manipulation query?
-     * @var array
-     * @access private
-     */
-    var $manip_query = array();
-
-    /**
-     * Store of prepared SQL queries.
-     * @var array
-     * @access private
-     */
-    var $_prepared_queries = array();
-
-
-    // }}}
-    // {{{ constructor
-
-    /**
-     * This constructor calls <kbd>$this->DB_common()</kbd>
-     *
-     * @return void
-     */
-    function DB_oci8()
-    {
-        $this->DB_common();
-    }
-
-    // }}}
-    // {{{ connect()
-
-    /**
-     * Connect to the database server, log in and open the database
-     *
-     * Don't call this method directly.  Use DB::connect() instead.
-     *
-     * If PHP is at version 5.0.0 or greater:
-     *   + Generally, oci_connect() or oci_pconnect() are used.
-     *   + But if the new_link DSN option is set to true, oci_new_connect()
-     *     is used.
-     *
-     * When using PHP version 4.x, OCILogon() or OCIPLogon() are used.
-     *
-     * PEAR DB's oci8 driver supports the following extra DSN options:
-     *   + charset       The character set to be used on the connection.
-     *                    Only used if PHP is at version 5.0.0 or greater
-     *                    and the Oracle server is at 9.2 or greater.
-     *                    Available since PEAR DB 1.7.0.
-     *   + new_link      If set to true, causes subsequent calls to
-     *                    connect() to return a new connection link
-     *                    instead of the existing one.  WARNING: this is
-     *                    not portable to other DBMS's.
-     *                    Available since PEAR DB 1.7.0.
-     *
-     * @param array $dsn         the data source name
-     * @param bool  $persistent  should the connection be persistent?
-     *
-     * @return int  DB_OK on success. A DB_Error object on failure.
-     */
-    function connect($dsn, $persistent = false)
-    {
-        if (!PEAR::loadExtension('oci8')) {
-            return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);
-        }
-
-        $this->dsn = $dsn;
-        if ($dsn['dbsyntax']) {
-            $this->dbsyntax = $dsn['dbsyntax'];
-        }
-
-        // Backwards compatibility with DB < 1.7.0
-        if (empty($dsn['database']) && !empty($dsn['hostspec'])) {
-            $db = $dsn['hostspec'];
-        } else {
-            $db = $dsn['database'];
-        }
-
-        if (function_exists('oci_connect')) {
-            if (isset($dsn['new_link'])
-                && ($dsn['new_link'] == 'true' || $dsn['new_link'] === true))
-            {
-                $connect_function = 'oci_new_connect';
-            } else {
-                $connect_function = $persistent ? 'oci_pconnect'
-                                    : 'oci_connect';
-            }
-            if (isset($this->dsn['port']) && $this->dsn['port']) {
-                $db = '//'.$db.':'.$this->dsn['port'];
-            }
-
-            $char = empty($dsn['charset']) ? null : $dsn['charset'];
-            $this->connection = @$connect_function($dsn['username'],
-                                                   $dsn['password'],
-                                                   $db,
-                                                   $char);
-            $error = OCIError();
-            if (!empty($error) && $error['code'] == 12541) {
-                // Couldn't find TNS listener.  Try direct connection.
-                $this->connection = @$connect_function($dsn['username'],
-                                                       $dsn['password'],
-                                                       null,
-                                                       $char);
-            }
-        } else {
-            $connect_function = $persistent ? 'OCIPLogon' : 'OCILogon';
-            if ($db) {
-                $this->connection = @$connect_function($dsn['username'],
-                                                       $dsn['password'],
-                                                       $db);
-            } elseif ($dsn['username'] || $dsn['password']) {
-                $this->connection = @$connect_function($dsn['username'],
-                                                       $dsn['password']);
-            }
-        }
-
-        if (!$this->connection) {
-            $error = OCIError();
-            $error = (is_array($error)) ? $error['message'] : null;
-            return $this->raiseError(DB_ERROR_CONNECT_FAILED,
-                                     null, null, null,
-                                     $error);
-        }
-        return DB_OK;
-    }
-
-    // }}}
-    // {{{ disconnect()
-
-    /**
-     * Disconnects from the database server
-     *
-     * @return bool  TRUE on success, FALSE on failure
-     */
-    function disconnect()
-    {
-        if (function_exists('oci_close')) {
-            $ret = @oci_close($this->connection);
-        } else {
-            $ret = @OCILogOff($this->connection);
-        }
-        $this->connection = null;
-        return $ret;
-    }
-
-    // }}}
-    // {{{ simpleQuery()
-
-    /**
-     * Sends a query to the database server
-     *
-     * To determine how many rows of a result set get buffered using
-     * ocisetprefetch(), see the "result_buffering" option in setOptions().
-     * This option was added in Release 1.7.0.
-     *
-     * @param string  the SQL query string
-     *
-     * @return mixed  + a PHP result resrouce for successful SELECT queries
-     *                + the DB_OK constant for other successful queries
-     *                + a DB_Error object on failure
-     */
-    function simpleQuery($query)
-    {
-        $this->_data = array();
-        $this->last_parameters = array();
-        $this->last_query = $query;
-        $query = $this->modifyQuery($query);
-        $result = @OCIParse($this->connection, $query);
-        if (!$result) {
-            return $this->oci8RaiseError();
-        }
-        if ($this->autocommit) {
-            $success = @OCIExecute($result,OCI_COMMIT_ON_SUCCESS);
-        } else {
-            $success = @OCIExecute($result,OCI_DEFAULT);
-        }
-        if (!$success) {
-            return $this->oci8RaiseError($result);
-        }
-        $this->last_stmt = $result;
-        if ($this->_checkManip($query)) {
-            return DB_OK;
-        } else {
-            @ocisetprefetch($result, $this->options['result_buffering']);
-            return $result;
-        }
-    }
-
-    // }}}
-    // {{{ nextResult()
-
-    /**
-     * Move the internal oracle result pointer to the next available result
-     *
-     * @param a valid oci8 result resource
-     *
-     * @access public
-     *
-     * @return true if a result is available otherwise return false
-     */
-    function nextResult($result)
-    {
-        return false;
-    }
-
-    // }}}
-    // {{{ fetchInto()
-
-    /**
-     * Places a row from the result set into the given array
-     *
-     * Formating of the array and the data therein are configurable.
-     * See DB_result::fetchInto() for more information.
-     *
-     * This method is not meant to be called directly.  Use
-     * DB_result::fetchInto() instead.  It can't be declared "protected"
-     * because DB_result is a separate object.
-     *
-     * @param resource $result    the query result resource
-     * @param array    $arr       the referenced array to put the data in
-     * @param int      $fetchmode how the resulting array should be indexed
-     * @param int      $rownum    the row number to fetch (0 = first row)
-     *
-     * @return mixed  DB_OK on success, NULL when the end of a result set is
-     *                 reached or on failure
-     *
-     * @see DB_result::fetchInto()
-     */
-    function fetchInto($result, &$arr, $fetchmode, $rownum = null)
-    {
-        if ($rownum !== null) {
-            return $this->raiseError(DB_ERROR_NOT_CAPABLE);
-        }
-        if ($fetchmode & DB_FETCHMODE_ASSOC) {
-            $moredata = @OCIFetchInto($result,$arr,OCI_ASSOC+OCI_RETURN_NULLS+OCI_RETURN_LOBS);
-            if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE &&
-                $moredata)
-            {
-                $arr = array_change_key_case($arr, CASE_LOWER);
-            }
-        } else {
-            $moredata = OCIFetchInto($result,$arr,OCI_RETURN_NULLS+OCI_RETURN_LOBS);
-        }
-        if (!$moredata) {
-            return null;
-        }
-        if ($this->options['portability'] & DB_PORTABILITY_RTRIM) {
-            $this->_rtrimArrayValues($arr);
-        }
-        if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) {
-            $this->_convertNullArrayValuesToEmpty($arr);
-        }
-        return DB_OK;
-    }
-
-    // }}}
-    // {{{ freeResult()
-
-    /**
-     * Deletes the result set and frees the memory occupied by the result set
-     *
-     * This method is not meant to be called directly.  Use
-     * DB_result::free() instead.  It can't be declared "protected"
-     * because DB_result is a separate object.
-     *
-     * @param resource $result  PHP's query result resource
-     *
-     * @return bool  TRUE on success, FALSE if $result is invalid
-     *
-     * @see DB_result::free()
-     */
-    function freeResult($result)
-    {
-        return is_resource($result) ? OCIFreeStatement($result) : false;
-    }
-
-    /**
-     * Frees the internal resources associated with a prepared query
-     *
-     * @param resource $stmt           the prepared statement's resource
-     * @param bool     $free_resource  should the PHP resource be freed too?
-     *                                  Use false if you need to get data
-     *                                  from the result set later.
-     *
-     * @return bool  TRUE on success, FALSE if $result is invalid
-     *
-     * @see DB_oci8::prepare()
-     */
-    function freePrepared($stmt, $free_resource = true)
-    {
-        if (!is_resource($stmt)) {
-            return false;
-        }
-        if ($free_resource) {
-            @ocifreestatement($stmt);
-        }
-        if (isset($this->prepare_types[(int)$stmt])) {
-            unset($this->prepare_types[(int)$stmt]);
-            unset($this->manip_query[(int)$stmt]);
-        } else {
-            return false;
-        }
-        return true;
-    }
-
-    // }}}
-    // {{{ numRows()
-
-    /**
-     * Gets the number of rows in a result set
-     *
-     * Only works if the DB_PORTABILITY_NUMROWS portability option
-     * is turned on.
-     *
-     * This method is not meant to be called directly.  Use
-     * DB_result::numRows() instead.  It can't be declared "protected"
-     * because DB_result is a separate object.
-     *
-     * @param resource $result  PHP's query result resource
-     *
-     * @return int  the number of rows.  A DB_Error object on failure.
-     *
-     * @see DB_result::numRows(), DB_common::setOption()
-     */
-    function numRows($result)
-    {
-        // emulate numRows for Oracle.  yuck.
-        if ($this->options['portability'] & DB_PORTABILITY_NUMROWS &&
-            $result === $this->last_stmt)
-        {
-            $countquery = 'SELECT COUNT(*) FROM ('.$this->last_query.')';
-            $save_query = $this->last_query;
-            $save_stmt = $this->last_stmt;
-
-            $count = $this->query($countquery);
-
-            // Restore the last query and statement.
-            $this->last_query = $save_query;
-            $this->last_stmt = $save_stmt;
-            
-            if (DB::isError($count) ||
-                DB::isError($row = $count->fetchRow(DB_FETCHMODE_ORDERED)))
-            {
-                return $this->raiseError(DB_ERROR_NOT_CAPABLE);
-            }
-
-            return $row[0];
-        }
-        return $this->raiseError(DB_ERROR_NOT_CAPABLE);
-    }
-
-    // }}}
-    // {{{ numCols()
-
-    /**
-     * Gets the number of columns in a result set
-     *
-     * This method is not meant to be called directly.  Use
-     * DB_result::numCols() instead.  It can't be declared "protected"
-     * because DB_result is a separate object.
-     *
-     * @param resource $result  PHP's query result resource
-     *
-     * @return int  the number of columns.  A DB_Error object on failure.
-     *
-     * @see DB_result::numCols()
-     */
-    function numCols($result)
-    {
-        $cols = @OCINumCols($result);
-        if (!$cols) {
-            return $this->oci8RaiseError($result);
-        }
-        return $cols;
-    }
-
-    // }}}
-    // {{{ prepare()
-
-    /**
-     * Prepares a query for multiple execution with execute().
-     *
-     * With oci8, this is emulated.
-     *
-     * prepare() requires a generic query as string like <code>
-     *    INSERT INTO numbers VALUES (?, ?, ?)
-     * </code>.  The <kbd>?</kbd> characters are placeholders.
-     *
-     * Three types of placeholders can be used:
-     *   + <kbd>?</kbd>  a quoted scalar value, i.e. strings, integers
-     *   + <kbd>!</kbd>  value is inserted 'as is'
-     *   + <kbd>&</kbd>  requires a file name.  The file's contents get
-     *                     inserted into the query (i.e. saving binary
-     *                     data in a db)
-     *
-     * Use backslashes to escape placeholder characters if you don't want
-     * them to be interpreted as placeholders.  Example: <code>
-     *    "UPDATE foo SET col=? WHERE col='over \& under'"
-     * </code>
-     *
-     * @param string $query  the query to be prepared
-     *
-     * @return mixed  DB statement resource on success. DB_Error on failure.
-     *
-     * @see DB_oci8::execute()
-     */
-    function prepare($query)
-    {
-        $tokens   = preg_split('/((?<!\\\)[&?!])/', $query, -1,
-                               PREG_SPLIT_DELIM_CAPTURE);
-        $binds    = count($tokens) - 1;
-        $token    = 0;
-        $types    = array();
-        $newquery = '';
-
-        foreach ($tokens as $key => $val) {
-            switch ($val) {
-                case '?':
-                    $types[$token++] = DB_PARAM_SCALAR;
-                    unset($tokens[$key]);
-                    break;
-                case '&':
-                    $types[$token++] = DB_PARAM_OPAQUE;
-                    unset($tokens[$key]);
-                    break;
-                case '!':
-                    $types[$token++] = DB_PARAM_MISC;
-                    unset($tokens[$key]);
-                    break;
-                default:
-                    $tokens[$key] = preg_replace('/\\\([&?!])/', "\\1", $val);
-                    if ($key != $binds) {
-                        $newquery .= $tokens[$key] . ':bind' . $token;
-                    } else {
-                        $newquery .= $tokens[$key];
-                    }
-            }
-        }
-
-        $this->last_query = $query;
-        $newquery = $this->modifyQuery($newquery);
-        if (!$stmt = @OCIParse($this->connection, $newquery)) {
-            return $this->oci8RaiseError();
-        }
-        $this->prepare_types[(int)$stmt] = $types;
-        $this->manip_query[(int)$stmt] = DB::isManip($query);
-        $this->_prepared_queries[(int)$stmt] = $newquery;
-        return $stmt;
-    }
-
-    // }}}
-    // {{{ execute()
-
-    /**
-     * Executes a DB statement prepared with prepare().
-     *
-     * To determine how many rows of a result set get buffered using
-     * ocisetprefetch(), see the "result_buffering" option in setOptions().
-     * This option was added in Release 1.7.0.
-     *
-     * @param resource  $stmt  a DB statement resource returned from prepare()
-     * @param mixed  $data  array, string or numeric data to be used in
-     *                      execution of the statement.  Quantity of items
-     *                      passed must match quantity of placeholders in
-     *                      query:  meaning 1 for non-array items or the
-     *                      quantity of elements in the array.
-     *
-     * @return mixed  returns an oic8 result resource for successful SELECT
-     *                queries, DB_OK for other successful queries.
-     *                A DB error object is returned on failure.
-     *
-     * @see DB_oci8::prepare()
-     */
-    function &execute($stmt, $data = array())
-    {
-        $data = (array)$data;
-        $this->last_parameters = $data;
-        $this->last_query = $this->_prepared_queries[(int)$stmt];
-        $this->_data = $data;
-
-        $types = $this->prepare_types[(int)$stmt];
-        if (count($types) != count($data)) {
-            $tmp = $this->raiseError(DB_ERROR_MISMATCH);
-            return $tmp;
-        }
-
-        $i = 0;
-        foreach ($data as $key => $value) {
-            if ($types[$i] == DB_PARAM_MISC) {
-                /*
-                 * Oracle doesn't seem to have the ability to pass a
-                 * parameter along unchanged, so strip off quotes from start
-                 * and end, plus turn two single quotes to one single quote,
-                 * in order to avoid the quotes getting escaped by
-                 * Oracle and ending up in the database.
-                 */
-                $data[$key] = preg_replace("/^'(.*)'$/", "\\1", $data[$key]);
-                $data[$key] = str_replace("''", "'", $data[$key]);
-            } elseif ($types[$i] == DB_PARAM_OPAQUE) {
-                $fp = @fopen($data[$key], 'rb');
-                if (!$fp) {
-                    $tmp = $this->raiseError(DB_ERROR_ACCESS_VIOLATION);
-                    return $tmp;
-                }
-                $data[$key] = fread($fp, filesize($data[$key]));
-                fclose($fp);
-            } elseif ($types[$i] == DB_PARAM_SCALAR) {
-                // Floats have to be converted to a locale-neutral
-                // representation.
-                if (is_float($data[$key])) {
-                    $data[$key] = $this->quoteFloat($data[$key]);
-                }
-            }
-            if (!@OCIBindByName($stmt, ':bind' . $i, $data[$key], -1)) {
-                $tmp = $this->oci8RaiseError($stmt);
-                return $tmp;
-            }
-            $this->last_query = str_replace(':bind'.$i, $this->quoteSmart($data[$key]), $this->last_query);
-            $i++;
-        }
-        if ($this->autocommit) {
-            $success = @OCIExecute($stmt, OCI_COMMIT_ON_SUCCESS);
-        } else {
-            $success = @OCIExecute($stmt, OCI_DEFAULT);
-        }
-        if (!$success) {
-            $tmp = $this->oci8RaiseError($stmt);
-            return $tmp;
-        }
-        $this->last_stmt = $stmt;
-        if ($this->manip_query[(int)$stmt] || $this->_next_query_manip) {
-            $this->_last_query_manip = true;
-            $this->_next_query_manip = false;
-            $tmp = DB_OK;
-        } else {
-            $this->_last_query_manip = false;
-            @ocisetprefetch($stmt, $this->options['result_buffering']);
-            $tmp = new DB_result($this, $stmt);
-        }
-        return $tmp;
-    }
-
-    // }}}
-    // {{{ autoCommit()
-
-    /**
-     * Enables or disables automatic commits
-     *
-     * @param bool $onoff  true turns it on, false turns it off
-     *
-     * @return int  DB_OK on success.  A DB_Error object if the driver
-     *               doesn't support auto-committing transactions.
-     */
-    function autoCommit($onoff = false)
-    {
-        $this->autocommit = (bool)$onoff;;
-        return DB_OK;
-    }
-
-    // }}}
-    // {{{ commit()
-
-    /**
-     * Commits the current transaction
-     *
-     * @return int  DB_OK on success.  A DB_Error object on failure.
-     */
-    function commit()
-    {
-        $result = @OCICommit($this->connection);
-        if (!$result) {
-            return $this->oci8RaiseError();
-        }
-        return DB_OK;
-    }
-
-    // }}}
-    // {{{ rollback()
-
-    /**
-     * Reverts the current transaction
-     *
-     * @return int  DB_OK on success.  A DB_Error object on failure.
-     */
-    function rollback()
-    {
-        $result = @OCIRollback($this->connection);
-        if (!$result) {
-            return $this->oci8RaiseError();
-        }
-        return DB_OK;
-    }
-
-    // }}}
-    // {{{ affectedRows()
-
-    /**
-     * Determines the number of rows affected by a data maniuplation query
-     *
-     * 0 is returned for queries that don't manipulate data.
-     *
-     * @return int  the number of rows.  A DB_Error object on failure.
-     */
-    function affectedRows()
-    {
-        if ($this->last_stmt === false) {
-            return $this->oci8RaiseError();
-        }
-        $result = @OCIRowCount($this->last_stmt);
-        if ($result === false) {
-            return $this->oci8RaiseError($this->last_stmt);
-        }
-        return $result;
-    }
-
-    // }}}
-    // {{{ modifyQuery()
-
-    /**
-     * Changes a query string for various DBMS specific reasons
-     *
-     * "SELECT 2+2" must be "SELECT 2+2 FROM dual" in Oracle.
-     *
-     * @param string $query  the query string to modify
-     *
-     * @return string  the modified query string
-     *
-     * @access protected
-     */
-    function modifyQuery($query)
-    {
-        if (preg_match('/^\s*SELECT/i', $query) &&
-            !preg_match('/\sFROM\s/i', $query)) {
-            $query .= ' FROM dual';
-        }
-        return $query;
-    }
-
-    // }}}
-    // {{{ modifyLimitQuery()
-
-    /**
-     * Adds LIMIT clauses to a query string according to current DBMS standards
-     *
-     * @param string $query   the query to modify
-     * @param int    $from    the row to start to fetching (0 = the first row)
-     * @param int    $count   the numbers of rows to fetch
-     * @param mixed  $params  array, string or numeric data to be used in
-     *                         execution of the statement.  Quantity of items
-     *                         passed must match quantity of placeholders in
-     *                         query:  meaning 1 placeholder for non-array
-     *                         parameters or 1 placeholder per array element.
-     *
-     * @return string  the query string with LIMIT clauses added
-     *
-     * @access protected
-     */
-    function modifyLimitQuery($query, $from, $count, $params = array())
-    {
-        // Let Oracle return the name of the columns instead of
-        // coding a "home" SQL parser
-
-        if (count($params)) {
-            $result = $this->prepare("SELECT * FROM ($query) "
-                                     . 'WHERE NULL = NULL');
-            $tmp = $this->execute($result, $params);
-        } else {
-            $q_fields = "SELECT * FROM ($query) WHERE NULL = NULL";
-
-            if (!$result = @OCIParse($this->connection, $q_fields)) {
-                $this->last_query = $q_fields;
-                return $this->oci8RaiseError();
-            }
-            if (!@OCIExecute($result, OCI_DEFAULT)) {
-                $this->last_query = $q_fields;
-                return $this->oci8RaiseError($result);
-            }
-        }
-
-        $ncols = OCINumCols($result);
-        $cols  = array();
-        for ( $i = 1; $i <= $ncols; $i++ ) {
-            $cols[] = '"' . OCIColumnName($result, $i) . '"';
-        }
-        $fields = implode(', ', $cols);
-        // XXX Test that (tip by John Lim)
-        //if (preg_match('/^\s*SELECT\s+/is', $query, $match)) {
-        //    // Introduce the FIRST_ROWS Oracle query optimizer
-        //    $query = substr($query, strlen($match[0]), strlen($query));
-        //    $query = "SELECT /* +FIRST_ROWS */ " . $query;
-        //}
-
-        // Construct the query
-        // more at: http://marc.theaimsgroup.com/?l=php-db&m=99831958101212&w=2
-        // Perhaps this could be optimized with the use of Unions
-        $query = "SELECT $fields FROM".
-                 "  (SELECT rownum as linenum, $fields FROM".
-                 "      ($query)".
-                 '  WHERE rownum <= '. ($from + $count) .
-                 ') WHERE linenum >= ' . ++$from;
-        return $query;
-    }
-
-    // }}}
-    // {{{ nextId()
-
-    /**
-     * Returns the next free id in a sequence
-     *
-     * @param string  $seq_name  name of the sequence
-     * @param boolean $ondemand  when true, the seqence is automatically
-     *                            created if it does not exist
-     *
-     * @return int  the next id number in the sequence.
-     *               A DB_Error object on failure.
-     *
-     * @see DB_common::nextID(), DB_common::getSequenceName(),
-     *      DB_oci8::createSequence(), DB_oci8::dropSequence()
-     */
-    function nextId($seq_name, $ondemand = true)
-    {
-        $seqname = $this->getSequenceName($seq_name);
-        $repeat = 0;
-        do {
-            $this->expectError(DB_ERROR_NOSUCHTABLE);
-            $result = $this->query("SELECT ${seqname}.nextval FROM dual");
-            $this->popExpect();
-            if ($ondemand && DB::isError($result) &&
-                $result->getCode() == DB_ERROR_NOSUCHTABLE) {
-                $repeat = 1;
-                $result = $this->createSequence($seq_name);
-                if (DB::isError($result)) {
-                    return $this->raiseError($result);
-                }
-            } else {
-                $repeat = 0;
-            }
-        } while ($repeat);
-        if (DB::isError($result)) {
-            return $this->raiseError($result);
-        }
-        $arr = $result->fetchRow(DB_FETCHMODE_ORDERED);
-        return $arr[0];
-    }
-
-    /**
-     * Creates a new sequence
-     *
-     * @param string $seq_name  name of the new sequence
-     *
-     * @return int  DB_OK on success.  A DB_Error object on failure.
-     *
-     * @see DB_common::createSequence(), DB_common::getSequenceName(),
-     *      DB_oci8::nextID(), DB_oci8::dropSequence()
-     */
-    function createSequence($seq_name)
-    {
-        return $this->query('CREATE SEQUENCE '
-                            . $this->getSequenceName($seq_name));
-    }
-
-    // }}}
-    // {{{ dropSequence()
-
-    /**
-     * Deletes a sequence
-     *
-     * @param string $seq_name  name of the sequence to be deleted
-     *
-     * @return int  DB_OK on success.  A DB_Error object on failure.
-     *
-     * @see DB_common::dropSequence(), DB_common::getSequenceName(),
-     *      DB_oci8::nextID(), DB_oci8::createSequence()
-     */
-    function dropSequence($seq_name)
-    {
-        return $this->query('DROP SEQUENCE '
-                            . $this->getSequenceName($seq_name));
-    }
-
-    // }}}
-    // {{{ oci8RaiseError()
-
-    /**
-     * Produces a DB_Error object regarding the current problem
-     *
-     * @param int $errno  if the error is being manually raised pass a
-     *                     DB_ERROR* constant here.  If this isn't passed
-     *                     the error information gathered from the DBMS.
-     *
-     * @return object  the DB_Error object
-     *
-     * @see DB_common::raiseError(),
-     *      DB_oci8::errorNative(), DB_oci8::errorCode()
-     */
-    function oci8RaiseError($errno = null)
-    {
-        if ($errno === null) {
-            $error = @OCIError($this->connection);
-            return $this->raiseError($this->errorCode($error['code']),
-                                     null, null, null, $error['message']);
-        } elseif (is_resource($errno)) {
-            $error = @OCIError($errno);
-            return $this->raiseError($this->errorCode($error['code']),
-                                     null, null, null, $error['message']);
-        }
-        return $this->raiseError($this->errorCode($errno));
-    }
-
-    // }}}
-    // {{{ errorNative()
-
-    /**
-     * Gets the DBMS' native error code produced by the last query
-     *
-     * @return int  the DBMS' error code.  FALSE if the code could not be
-     *               determined
-     */
-    function errorNative()
-    {
-        if (is_resource($this->last_stmt)) {
-            $error = @OCIError($this->last_stmt);
-        } else {
-            $error = @OCIError($this->connection);
-        }
-        if (is_array($error)) {
-            return $error['code'];
-        }
-        return false;
-    }
-
-    // }}}
-    // {{{ tableInfo()
-
-    /**
-     * Returns information about a table or a result set
-     *
-     * NOTE: only supports 'table' and 'flags' if <var>$result</var>
-     * is a table name.
-     *
-     * NOTE: flags won't contain index information.
-     *
-     * @param object|string  $result  DB_result object from a query or a
-     *                                 string containing the name of a table.
-     *                                 While this also accepts a query result
-     *                                 resource identifier, this behavior is
-     *                                 deprecated.
-     * @param int            $mode    a valid tableInfo mode
-     *
-     * @return array  an associative array with the information requested.
-     *                 A DB_Error object on failure.
-     *
-     * @see DB_common::tableInfo()
-     */
-    function tableInfo($result, $mode = null)
-    {
-        if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) {
-            $case_func = 'strtolower';
-        } else {
-            $case_func = 'strval';
-        }
-
-        $res = array();
-
-        if (is_string($result)) {
-            /*
-             * Probably received a table name.
-             * Create a result resource identifier.
-             */
-            $result = strtoupper($result);
-            $q_fields = 'SELECT column_name, data_type, data_length, '
-                        . 'nullable '
-                        . 'FROM user_tab_columns '
-                        . "WHERE table_name='$result' ORDER BY column_id";
-
-            $this->last_query = $q_fields;
-
-            if (!$stmt = @OCIParse($this->connection, $q_fields)) {
-                return $this->oci8RaiseError(DB_ERROR_NEED_MORE_DATA);
-            }
-            if (!@OCIExecute($stmt, OCI_DEFAULT)) {
-                return $this->oci8RaiseError($stmt);
-            }
-            
-            $i = 0;
-            while (@OCIFetch($stmt)) {
-                $res[$i] = array(
-                    'table' => $case_func($result),
-                    'name'  => $case_func(@OCIResult($stmt, 1)),
-                    'type'  => @OCIResult($stmt, 2),
-                    'len'   => @OCIResult($stmt, 3),
-                    'flags' => (@OCIResult($stmt, 4) == 'N') ? 'not_null' : '',
-                );
-                if ($mode & DB_TABLEINFO_ORDER) {
-                    $res['order'][$res[$i]['name']] = $i;
-                }
-                if ($mode & DB_TABLEINFO_ORDERTABLE) {
-                    $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
-                }
-                $i++;
-            }
-
-            if ($mode) {
-                $res['num_fields'] = $i;
-            }
-            @OCIFreeStatement($stmt);
-
-        } else {
-            if (isset($result->result)) {
-                /*
-                 * Probably received a result object.
-                 * Extract the result resource identifier.
-                 */
-                $result = $result->result;
-            }
-
-            $res = array();
-
-            if ($result === $this->last_stmt) {
-                $count = @OCINumCols($result);
-                if ($mode) {
-                    $res['num_fields'] = $count;
-                }
-                for ($i = 0; $i < $count; $i++) {
-                    $res[$i] = array(
-                        'table' => '',
-                        'name'  => $case_func(@OCIColumnName($result, $i+1)),
-                        'type'  => @OCIColumnType($result, $i+1),
-                        'len'   => @OCIColumnSize($result, $i+1),
-                        'flags' => '',
-                    );
-                    if ($mode & DB_TABLEINFO_ORDER) {
-                        $res['order'][$res[$i]['name']] = $i;
-                    }
-                    if ($mode & DB_TABLEINFO_ORDERTABLE) {
-                        $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
-                    }
-                }
-            } else {
-                return $this->raiseError(DB_ERROR_NOT_CAPABLE);
-            }
-        }
-        return $res;
-    }
-
-    // }}}
-    // {{{ getSpecialQuery()
-
-    /**
-     * Obtains the query string needed for listing a given type of objects
-     *
-     * @param string $type  the kind of objects you want to retrieve
-     *
-     * @return string  the SQL query string or null if the driver doesn't
-     *                  support the object type requested
-     *
-     * @access protected
-     * @see DB_common::getListOf()
-     */
-    function getSpecialQuery($type)
-    {
-        switch ($type) {
-            case 'tables':
-                return 'SELECT table_name FROM user_tables';
-            case 'synonyms':
-                return 'SELECT synonym_name FROM user_synonyms';
-            case 'views':
-                return 'SELECT view_name FROM user_views';
-            default:
-                return null;
-        }
-    }
-
-    // }}}
-    // {{{ quoteFloat()
-
-    /**
-     * Formats a float value for use within a query in a locale-independent
-     * manner.
-     *
-     * @param float the float value to be quoted.
-     * @return string the quoted string.
-     * @see DB_common::quoteSmart()
-     * @since Method available since release 1.7.8.
-     */
-    function quoteFloat($float) {
-        return $this->escapeSimple(str_replace(',', '.', strval(floatval($float))));
-    }
-     
-    // }}}
-
-}
-
-/*
- * Local variables:
- * tab-width: 4
- * c-basic-offset: 4
- * End:
- */
-
-?>