added all mdb2 drivers

1 files changed, 1167 insertions, 0 deletions

diff --git a/program/lib/MDB2/Driver/oci8.php b/program/lib/MDB2/Driver/oci8.php
new file mode 100755
index 000000000..0a58b82c1
--- /dev/null
+++ b/program/lib/MDB2/Driver/oci8.php
@@ -0,0 +1,1167 @@
+<?php
+// vim: set et ts=4 sw=4 fdm=marker:
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2004 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+
+// $Id$
+
+/**
+ * MDB2 OCI8 driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_oci8 extends MDB2_Driver_Common
+{
+    // {{{ properties
+    var $escape_quotes = "'";
+
+    var $uncommitedqueries = 0;
+
+    // }}}
+    // {{{ constructor
+
+    /**
+     * Constructor
+     */
+    function __construct()
+    {
+        parent::__construct();
+
+        $this->phptype = 'oci8';
+        $this->dbsyntax = 'oci8';
+
+        $this->supported['sequences'] = true;
+        $this->supported['indexes'] = true;
+        $this->supported['summary_functions'] = true;
+        $this->supported['order_by_text'] = true;
+        $this->supported['current_id'] = true;
+        $this->supported['affected_rows'] = true;
+        $this->supported['transactions'] = true;
+        $this->supported['limit_queries'] = 'emulated';
+        $this->supported['LOBs'] = true;
+        $this->supported['replace'] = 'emulated';
+        $this->supported['sub_selects'] = true;
+        $this->supported['auto_increment'] = false; // not implemented
+        $this->supported['primary_key'] =  false; // not implemented
+
+        $this->options['DBA_username'] = false;
+        $this->options['DBA_password'] = false;
+        $this->options['database_name_prefix'] = false;
+        $this->options['emulate_database'] = true;
+        $this->options['default_tablespace'] = false;
+        $this->options['default_text_field_length'] = 4000;
+    }
+
+    // }}}
+    // {{{ errorInfo()
+
+    /**
+     * This method is used to collect information about an error
+     *
+     * @param integer $error
+     * @return array
+     * @access public
+     */
+    function errorInfo($error = null)
+    {
+        if (is_resource($error)) {
+            $error_data = @OCIError($error);
+            $error = null;
+        } elseif ($this->connection) {
+            $error_data = @OCIError($this->connection);
+        } else {
+            $error_data = @OCIError();
+        }
+        $native_code = $error_data['code'];
+        $native_msg  = $error_data['message'];
+        if (is_null($error)) {
+            static $ecode_map;
+            if (empty($ecode_map)) {
+                $ecode_map = array(
+                    1    => MDB2_ERROR_CONSTRAINT,
+                    900  => MDB2_ERROR_SYNTAX,
+                    904  => MDB2_ERROR_NOSUCHFIELD,
+                    913  => MDB2_ERROR_VALUE_COUNT_ON_ROW,
+                    921  => MDB2_ERROR_SYNTAX,
+                    923  => MDB2_ERROR_SYNTAX,
+                    942  => MDB2_ERROR_NOSUCHTABLE,
+                    955  => MDB2_ERROR_ALREADY_EXISTS,
+                    1400 => MDB2_ERROR_CONSTRAINT_NOT_NULL,
+                    1401 => MDB2_ERROR_INVALID,
+                    1407 => MDB2_ERROR_CONSTRAINT_NOT_NULL,
+                    1418 => MDB2_ERROR_NOT_FOUND,
+                    1476 => MDB2_ERROR_DIVZERO,
+                    1722 => MDB2_ERROR_INVALID_NUMBER,
+                    2289 => MDB2_ERROR_NOSUCHTABLE,
+                    2291 => MDB2_ERROR_CONSTRAINT,
+                    2292 => MDB2_ERROR_CONSTRAINT,
+                    2449 => MDB2_ERROR_CONSTRAINT,
+                );
+            }
+            if (isset($ecode_map[$native_code])) {
+                $error = $ecode_map[$native_code];
+            }
+        }
+        return array($error, $native_code, $native_msg);
+    }
+
+    // }}}
+    // {{{ beginTransaction()
+
+    /**
+     * Start a transaction.
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function beginTransaction()
+    {
+        $this->debug('starting transaction', 'beginTransaction');
+        if ($this->in_transaction) {
+            return MDB2_OK;  //nothing to do
+        }
+        if (!$this->destructor_registered && $this->opened_persistent) {
+            $this->destructor_registered = true;
+            register_shutdown_function('MDB2_closeOpenTransactions');
+        }
+        $this->in_transaction = true;
+        ++$this->uncommitedqueries;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ commit()
+
+    /**
+     * Commit the database changes done during a transaction that is in
+     * progress.
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function commit()
+    {
+        $this->debug('commit transaction', 'commit');
+        if (!$this->in_transaction) {
+            return $this->raiseError(MDB2_ERROR, null, null,
+                'commit: transaction changes are being auto committed');
+        }
+        if ($this->uncommitedqueries) {
+            if (!@OCICommit($this->connection)) {
+                return $this->raiseError();
+            }
+            $this->uncommitedqueries = 0;
+        }
+        $this->in_transaction = false;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ rollback()
+
+    /**
+     * Cancel any database changes done during a transaction that is in
+     * progress.
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function rollback()
+    {
+        $this->debug('rolling back transaction', 'rollback');
+        if (!$this->in_transaction) {
+            return $this->raiseError(MDB2_ERROR, null, null,
+                'rollback: transactions can not be rolled back when changes are auto committed');
+        }
+        if ($this->uncommitedqueries) {
+            if (!@OCIRollback($this->connection)) {
+                return $this->raiseError();
+            }
+            $this->uncommitedqueries = 0;
+        }
+        $this->in_transaction = false;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ _doConnect()
+
+    /**
+     * do the grunt work of the connect
+     *
+     * @return connection on success or MDB2 Error Object on failure
+     * @access protected
+     */
+    function _doConnect($username, $password, $persistent = false)
+    {
+        if (!PEAR::loadExtension($this->phptype)) {
+            return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                'extension '.$this->phptype.' is not compiled into PHP');
+        }
+
+        if (isset($this->dsn['hostspec'])) {
+            $sid = $this->dsn['hostspec'];
+        } else {
+            $sid = getenv('ORACLE_SID');
+        }
+        if (empty($sid)) {
+            return $this->raiseError(MDB2_ERROR, null, null,
+                'it was not specified a valid Oracle Service Identifier (SID)');
+        }
+
+        if (function_exists('oci_connect')) {
+            if (isset($this->dsn['new_link'])
+                && ($this->dsn['new_link'] == 'true' || $this->dsn['new_link'] === true)
+            ) {
+                $connect_function = 'oci_new_connect';
+            } else {
+                $connect_function = $persistent ? 'oci_pconnect' : 'oci_connect';
+            }
+
+            $charset = empty($this->dsn['charset']) ? null : $this->dsn['charset'];
+            $connection = @$connect_function($username, $password, $sid, $charset);
+            $error = @OCIError();
+            if (isset($error['code']) && $error['code'] == 12541) {
+                // Couldn't find TNS listener.  Try direct connection.
+                $connection = @$connect_function($username, $password, null, $charset);
+            }
+        } else {
+            $connect_function = $persistent ? 'OCIPLogon' : 'OCILogon';
+            $connection = @$connect_function($username, $password, $sid);
+        }
+
+        if (!$connection) {
+            return $this->raiseError(MDB2_ERROR_CONNECT_FAILED);
+        }
+
+        return $connection;
+    }
+
+    // }}}
+    // {{{ connect()
+
+    /**
+     * Connect to the database
+     *
+     * @return MDB2_OK on success, MDB2 Error Object on failure
+     * @access public
+     */
+    function connect()
+    {
+        if ($this->database_name && $this->options['emulate_database']) {
+             $this->dsn['username'] = $this->options['database_name_prefix'].$this->database_name;
+        }
+        if (is_resource($this->connection)) {
+            if (count(array_diff($this->connected_dsn, $this->dsn)) == 0
+                && $this->opened_persistent == $this->options['persistent']
+            ) {
+                return MDB2_OK;
+            }
+            $this->disconnect(false);
+        }
+
+        $connection = $this->_doConnect(
+            $this->dsn['username'],
+            $this->dsn['password'],
+            $this->options['persistent']
+        );
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+        $this->connection = $connection;
+        $this->connected_dsn = $this->dsn;
+        $this->opened_persistent = $this->options['persistent'];
+        $this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
+
+        $query = "ALTER SESSION SET NLS_DATE_FORMAT='YYYY-MM-DD HH24:MI:SS'";
+        $err = $this->_doQuery($query, true);
+        if (PEAR::isError($err)) {
+            $this->disconnect(false);
+            return $err;
+        }
+
+        $query = "ALTER SESSION SET NLS_NUMERIC_CHARACTERS='. '";
+        $err = $this->_doQuery($query, true);
+        if (PEAR::isError($err)) {
+            $this->disconnect(false);
+            return $err;
+        }
+
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ disconnect()
+
+    /**
+     * Log out and disconnect from the database.
+     *
+     * @return mixed true on success, false if not connected and error
+     *                object on error
+     * @access public
+     */
+    function disconnect($force = true)
+    {
+        if (is_resource($this->connection)) {
+            if (!$this->opened_persistent || $force) {
+                if (function_exists('oci_close')) {
+                    @oci_close($this->connection);
+                } else {
+                    @OCILogOff($this->connection);
+                }
+            }
+            $this->connection = 0;
+            $this->uncommitedqueries = 0;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ standaloneQuery()
+
+   /**
+     * execute a query as DBA
+     *
+     * @param string $query the SQL query
+     * @param mixed   $types  array that contains the types of the columns in
+     *                        the result set
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function &standaloneQuery($query, $types = null)
+    {
+        $connection = $this->_doConnect(
+            $this->options['DBA_username'],
+            $this->options['DBA_password'],
+            $this->options['persistent']
+        );
+        if (PEAR::isError($connection)) {
+            return $connection;
+        }
+
+        $isManip = MDB2::isManip($query);
+        $offset = $this->row_offset;
+        $limit = $this->row_limit;
+        $this->row_offset = $this->row_limit = 0;
+        $query = $this->_modifyQuery($query, $isManip, $limit, $offset);
+
+        $result = $this->_doQuery($query, $isManip, $connection, false);
+
+        @OCILogOff($connection);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        if ($isManip) {
+            return $result;
+        }
+        $return =& $this->_wrapResult($result, $types, true, false, $limit, $offset);
+        return $return;
+    }
+
+    // }}}
+    // {{{ _modifyQuery()
+
+    /**
+     * Changes a query string for various DBMS specific reasons
+     *
+     * @param string $query  query to modify
+     * @return the new (modified) query
+     * @access protected
+     */
+    function _modifyQuery($query)
+    {
+        // "SELECT 2+2" must be "SELECT 2+2 FROM dual" in Oracle
+        if (preg_match('/^\s*SELECT/i', $query)
+            && !preg_match('/\sFROM\s/i', $query)
+        ) {
+            $query.= " FROM dual";
+        }
+        return $query;
+    }
+
+    // }}}
+    // {{{ _doQuery()
+
+    /**
+     * Execute a query
+     * @param string $query  query
+     * @param boolean $isManip  if the query is a manipulation query
+     * @param resource $connection
+     * @param string $database_name
+     * @return result or error object
+     * @access protected
+     */
+    function _doQuery($query, $isManip = false, $connection = null, $database_name = null)
+    {
+        $this->last_query = $query;
+        $this->debug($query, 'query');
+        if ($this->getOption('disable_query')) {
+            if ($isManip) {
+                return 0;
+            }
+            return null;
+        }
+
+        if (is_null($connection)) {
+            $err = $this->connect();
+            if (PEAR::isError($err)) {
+                return $err;
+            }
+            $connection = $this->connection;
+        }
+
+        $result = @OCIParse($connection, $query);
+        if (!$result) {
+            return $this->raiseError(MDB2_ERROR, null, null,
+                'Could not create statement');
+        }
+
+        $mode = $this->in_transaction ? OCI_DEFAULT : OCI_COMMIT_ON_SUCCESS;
+        if (!@OCIExecute($result, $mode)) {
+            return $this->raiseError($result);
+        }
+
+        if ($isManip) {
+            return @OCIRowCount($result);
+        }
+
+        if (is_numeric($this->options['result_buffering'])) {
+            @ocisetprefetch($result, $this->options['result_buffering']);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ prepare()
+
+    /**
+     * Prepares a query for multiple execution with execute().
+     * With some database backends, this is emulated.
+     * prepare() requires a generic query as string like
+     * 'INSERT INTO numbers VALUES(?,?)' or
+     * 'INSERT INTO numbers VALUES(:foo,:bar)'.
+     * The ? and :[a-zA-Z] and  are placeholders which can be set using
+     * bindParam() and the query can be send off using the execute() method.
+     *
+     * @param string $query the query to prepare
+     * @param mixed   $types  array that contains the types of the placeholders
+     * @param mixed   $result_types  array that contains the types of the columns in
+     *                        the result set
+     * @return mixed resource handle for the prepared query on success, a MDB2
+     *        error on failure
+     * @access public
+     * @see bindParam, execute
+     */
+    function &prepare($query, $types = null, $result_types = null)
+    {
+        $this->debug($query, 'prepare');
+        $query = $this->_modifyQuery($query);
+        $contains_lobs = false;
+        if (is_array($types)) {
+            $columns = $variables = '';
+            foreach ($types as $parameter => $type) {
+                if ($type == 'clob' || $type == 'blob') {
+                    $contains_lobs = true;
+                    $columns.= ($columns ? ', ' : ' RETURNING ').$parameter;
+                    $variables.= ($variables ? ', ' : ' INTO ').':'.$parameter;
+                }
+            }
+        }
+        $placeholder_type_guess = $placeholder_type = null;
+        $question = '?';
+        $colon = ':';
+        $position = 0;
+        $parameter = -1;
+        while ($position < strlen($query)) {
+            $q_position = strpos($query, $question, $position);
+            $c_position = strpos($query, $colon, $position);
+            if ($q_position && $c_position) {
+                $p_position = min($q_position, $c_position);
+            } elseif ($q_position) {
+                $p_position = $q_position;
+            } elseif ($c_position) {
+                $p_position = $c_position;
+            } else {
+                break;
+            }
+            if (is_null($placeholder_type)) {
+                $placeholder_type_guess = $query[$p_position];
+            }
+            if (is_int($quote = strpos($query, "'", $position)) && $quote < $p_position) {
+                if (!is_int($end_quote = strpos($query, "'", $quote + 1))) {
+                    $err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
+                        'prepare: query with an unterminated text string specified');
+                    return $err;
+                }
+                switch ($this->escape_quotes) {
+                case '':
+                case "'":
+                    $position = $end_quote + 1;
+                    break;
+                default:
+                    if ($end_quote == $quote + 1) {
+                        $position = $end_quote + 1;
+                    } else {
+                        if ($query[$end_quote-1] == $this->escape_quotes) {
+                            $position = $end_quote;
+                        } else {
+                            $position = $end_quote + 1;
+                        }
+                    }
+                    break;
+                }
+            } elseif ($query[$position] == $placeholder_type_guess) {
+                if ($placeholder_type_guess == ':' && !$contains_lobs) {
+                    break;
+                }
+                if (is_null($placeholder_type)) {
+                    $placeholder_type = $query[$p_position];
+                    $question = $colon = $placeholder_type;
+                }
+                if ($contains_lobs) {
+                    if ($placeholder_type == ':') {
+                        $parameter = preg_replace('/^.{'.($position+1).'}([a-z0-9_]+).*$/si', '\\1', $query);
+                        if ($parameter === '') {
+                            $err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
+                                'prepare: named parameter with an empty name');
+                            return $err;
+                        }
+                        $length = strlen($parameter)+1;
+                    } else {
+                        ++$parameter;
+                        $length = strlen($parameter);
+                    }
+                    if (isset($types[$parameter])
+                        && ($types[$parameter] == 'clob' || $types[$parameter] == 'blob')
+                    ) {
+                        $value = $this->quote(true, $types[$parameter]);
+                        $query = substr_replace($query, $value, $p_position, $length);
+                        $position = $p_position + strlen($value) - 1;
+                    } elseif ($placeholder_type == '?') {
+                        $query = substr_replace($query, ':'.$parameter, $p_position, 1);
+                        $position = $p_position + strlen($parameter);
+                    }
+                } else {
+                    $query = substr_replace($query, ':'.++$parameter, $p_position, 1);
+                    $position = $p_position + strlen($parameter);
+                }
+            } else {
+                $position = $p_position;
+            }
+        }
+        if (is_array($types)) {
+            $query.= $columns.$variables;
+        }
+        $statement = @OCIParse($this->connection, $query);
+        if (!$statement) {
+            $err =& $this->raiseError(MDB2_ERROR, null, null,
+                'Could not create statement');
+            return $err;
+        }
+
+        $class_name = 'MDB2_Statement_'.$this->phptype;
+        $obj =& new $class_name($this, $statement, $query, $types, $result_types, $this->row_limit, $this->row_offset);
+        return $obj;
+    }
+
+    // }}}
+    // {{{ nextID()
+
+    /**
+     * returns the next free id of a sequence
+     *
+     * @param string $seq_name name of the sequence
+     * @param boolean $ondemand when true the seqence is
+     *                           automatic created, if it
+     *                           not exists
+     * @return mixed MDB2 Error Object or id
+     * @access public
+     */
+    function nextID($seq_name, $ondemand = true)
+    {
+        $sequence_name = $this->getSequenceName($seq_name);
+        $query = "SELECT $sequence_name.nextval FROM DUAL";
+        $this->expectError(MDB2_ERROR_NOSUCHTABLE);
+        $result = $this->queryOne($query, 'integer');
+        $this->popExpect();
+        if (PEAR::isError($result)) {
+            if ($ondemand && $result->getCode() == MDB2_ERROR_NOSUCHTABLE) {
+                $this->loadModule('Manager');
+                $result = $this->manager->createSequence($seq_name, 1);
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+                return $this->nextId($seq_name, false);
+            }
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ currId()
+
+    /**
+     * returns the current id of a sequence
+     *
+     * @param string $seq_name name of the sequence
+     * @return mixed MDB2_Error or id
+     * @access public
+     */
+    function currId($seq_name)
+    {
+        $sequence_name = $this->getSequenceName($seq_name);
+        return $this->queryOne("SELECT $sequence_name.currval FROM DUAL");
+    }
+}
+
+class MDB2_Result_oci8 extends MDB2_Result_Common
+{
+    // {{{ _skipLimitOffset()
+
+    /**
+     * Skip the first row of a result set.
+     *
+     * @param resource $result
+     * @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
+     * @access protected
+     */
+    function _skipLimitOffset()
+    {
+        if ($this->limit) {
+            if ($this->rownum > $this->limit) {
+                return false;
+            }
+        }
+        if ($this->offset) {
+            while ($this->offset_count < $this->offset) {
+                ++$this->offset_count;
+                if (!@OCIFetchInto($this->result, $row, OCI_RETURN_NULLS)) {
+                    $this->offset_count = $this->offset;
+                    return false;
+                }
+            }
+        }
+        return true;
+    }
+
+    // }}}
+    // {{{ fetchRow()
+
+    /**
+     * Fetch a row and insert the data into an existing array.
+     *
+     * @param int       $fetchmode  how the array data should be indexed
+     * @param int    $rownum    number of the row where the data can be found
+     * @return int data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null)
+    {
+        if (!$this->_skipLimitOffset()) {
+            $null = null;
+            return $null;
+        }
+        if (!is_null($rownum)) {
+            $seek = $this->seek($rownum);
+            if (PEAR::isError($seek)) {
+                return $seek;
+            }
+        }
+        if ($fetchmode == MDB2_FETCHMODE_DEFAULT) {
+            $fetchmode = $this->db->fetchmode;
+        }
+        if ($fetchmode & MDB2_FETCHMODE_ASSOC) {
+            @OCIFetchInto($this->result, $row, OCI_ASSOC+OCI_RETURN_NULLS);
+            if (is_array($row)
+                && $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
+            ) {
+                $row = array_change_key_case($row, $this->db->options['field_case']);
+            }
+        } else {
+            @OCIFetchInto($this->result, $row, OCI_RETURN_NULLS);
+        }
+        if (!$row) {
+            if (is_null($this->result)) {
+                $err =& $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'fetchRow: resultset has already been freed');
+                return $err;
+            }
+            $null = null;
+            return $null;
+
+        }
+        if ($this->db->options['portability'] & MDB2_PORTABILITY_RTRIM) {
+            $this->db->_fixResultArrayValues($row, MDB2_PORTABILITY_RTRIM);
+        }
+        if (!empty($this->values)) {
+            $this->_assignBindColumns($row);
+        }
+        if (!empty($this->types)) {
+            $row = $this->db->datatype->convertResultRow($this->types, $row);
+        }
+        if ($fetchmode === MDB2_FETCHMODE_OBJECT) {
+            $object_class = $this->db->options['fetch_class'];
+            if ($object_class == 'stdClass') {
+                $row = (object) $row;
+            } else {
+                $row = &new $object_class($row);
+            }
+        }
+        ++$this->rownum;
+        return $row;
+    }
+
+    // }}}
+    // {{{ _getColumnNames()
+
+    /**
+     * Retrieve the names of columns returned by the DBMS in a query result.
+     *
+     * @return mixed associative array variable
+     *      that holds the names of columns. The indexes of the array are
+     *      the column names mapped to lower case and the values are the
+     *      respective numbers of the columns starting from 0. Some DBMS may
+     *      not return any columns when the result set does not contain any
+     *      rows.
+     * @access private
+     */
+    function _getColumnNames()
+    {
+        $columns = array();
+        $numcols = $this->numCols();
+        if (PEAR::isError($numcols)) {
+            return $numcols;
+        }
+        for ($column = 0; $column < $numcols; $column++) {
+            $column_name = @OCIColumnName($this->result, $column + 1);
+            $columns[$column_name] = $column;
+        }
+        if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $columns = array_change_key_case($columns, $this->db->options['field_case']);
+        }
+        return $columns;
+    }
+
+    // }}}
+    // {{{ numCols()
+
+    /**
+     * Count the number of columns returned by the DBMS in a query result.
+     *
+     * @return mixed integer value with the number of columns, a MDB2 error
+     *      on failure
+     * @access public
+     */
+    function numCols()
+    {
+        $cols = @OCINumCols($this->result);
+        if (is_null($cols)) {
+            if (is_null($this->result)) {
+                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'numCols: resultset has already been freed');
+            }
+            return $this->db->raiseError();
+        }
+        return $cols;
+    }
+
+    // }}}
+    // {{{ free()
+
+    /**
+     * Free the internal resources associated with $result.
+     *
+     * @return boolean true on success, false if $result is invalid
+     * @access public
+     */
+    function free()
+    {
+        $free = @OCIFreeCursor($this->result);
+        if (!$free) {
+            if (is_null($this->result)) {
+                return MDB2_OK;
+            }
+            return $this->db->raiseError();
+        }
+        $this->result = null;
+        return MDB2_OK;
+    }
+}
+
+class MDB2_BufferedResult_oci8 extends MDB2_Result_oci8
+{
+    var $buffer;
+    var $buffer_rownum = - 1;
+
+    // {{{ _fillBuffer()
+
+    /**
+     * Fill the row buffer
+     *
+     * @param int $rownum   row number upto which the buffer should be filled
+                            if the row number is null all rows are ready into the buffer
+     * @return boolean true on success, false on failure
+     * @access protected
+     */
+    function _fillBuffer($rownum = null)
+    {
+        if (isset($this->buffer) && is_array($this->buffer)) {
+            if (is_null($rownum)) {
+                if (!end($this->buffer)) {
+                    return false;
+                }
+            } elseif (isset($this->buffer[$rownum])) {
+                return (bool)$this->buffer[$rownum];
+            }
+        }
+
+        if (!$this->_skipLimitOffset()) {
+            return false;
+        }
+
+        $row = true;
+        while ((is_null($rownum) || $this->buffer_rownum < $rownum)
+            && (!$this->limit || $this->buffer_rownum < $this->limit)
+            && ($row = @OCIFetchInto($this->result, $buffer, OCI_RETURN_NULLS))
+        ) {
+            ++$this->buffer_rownum;
+            $this->buffer[$this->buffer_rownum] = $buffer;
+        }
+
+        if (!$row) {
+            ++$this->buffer_rownum;
+            $this->buffer[$this->buffer_rownum] = false;
+            return false;
+        } elseif ($this->limit && $this->buffer_rownum >= $this->limit) {
+            ++$this->buffer_rownum;
+            $this->buffer[$this->buffer_rownum] = false;
+        }
+        return true;
+    }
+
+    // }}}
+    // {{{ fetchRow()
+
+    /**
+     * Fetch a row and insert the data into an existing array.
+     *
+     * @param int       $fetchmode  how the array data should be indexed
+     * @param int    $rownum    number of the row where the data can be found
+     * @return int data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null)
+    {
+        if (is_null($this->result)) {
+            $err =& $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                'fetchRow: resultset has already been freed');
+            return $err;
+        }
+        if (!is_null($rownum)) {
+            $seek = $this->seek($rownum);
+            if (PEAR::isError($seek)) {
+                return $seek;
+            }
+        }
+        $target_rownum = $this->rownum + 1;
+        if ($fetchmode == MDB2_FETCHMODE_DEFAULT) {
+            $fetchmode = $this->db->fetchmode;
+        }
+        if (!$this->_fillBuffer($target_rownum)) {
+            $null = null;
+            return $null;
+        }
+        $row = $this->buffer[$target_rownum];
+        if ($fetchmode & MDB2_FETCHMODE_ASSOC) {
+            $column_names = $this->getColumnNames();
+            foreach ($column_names as $name => $i) {
+                $column_names[$name] = $row[$i];
+            }
+            $row = $column_names;
+        }
+        if (!empty($this->values)) {
+            $this->_assignBindColumns($row);
+        }
+        if (!empty($this->types)) {
+            $row = $this->db->datatype->convertResultRow($this->types, $row);
+        }
+        if ($this->db->options['portability'] & MDB2_PORTABILITY_RTRIM) {
+            $this->db->_fixResultArrayValues($row, MDB2_PORTABILITY_RTRIM);
+        }
+        if ($fetchmode === MDB2_FETCHMODE_OBJECT) {
+            $object_class = $this->db->options['fetch_class'];
+            if ($object_class == 'stdClass') {
+                $row = (object) $row;
+            } else {
+                $row = &new $object_class($row);
+            }
+        }
+        ++$this->rownum;
+        return $row;
+    }
+
+    // }}}
+    // {{{ seek()
+
+    /**
+    * seek to a specific row in a result set
+    *
+    * @param int    $rownum    number of the row where the data can be found
+    * @return mixed MDB2_OK on success, a MDB2 error on failure
+    * @access public
+    */
+    function seek($rownum = 0)
+    {
+        if (is_null($this->result)) {
+            return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                'seek: resultset has already been freed');
+        }
+        $this->rownum = $rownum - 1;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ valid()
+
+    /**
+     * check if the end of the result set has been reached
+     *
+     * @return mixed true or false on sucess, a MDB2 error on failure
+     * @access public
+     */
+    function valid()
+    {
+        if (is_null($this->result)) {
+            return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                'valid: resultset has already been freed');
+        }
+        if ($this->_fillBuffer($this->rownum + 1)) {
+            return true;
+        }
+        return false;
+    }
+
+    // }}}
+    // {{{ numRows()
+
+    /**
+     * returns the number of rows in a result object
+     *
+     * @return mixed MDB2 Error Object or the number of rows
+     * @access public
+     */
+    function numRows()
+    {
+        if (is_null($this->result)) {
+            return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                'seek: resultset has already been freed');
+        }
+        $this->_fillBuffer();
+        return $this->buffer_rownum;
+    }
+
+    // }}}
+    // {{{ free()
+
+    /**
+     * Free the internal resources associated with $result.
+     *
+     * @return boolean true on success, false if $result is invalid
+     * @access public
+     */
+    function free()
+    {
+        $this->buffer = null;
+        $this->buffer_rownum = null;
+        $free = parent::free();
+    }
+}
+
+class MDB2_Statement_oci8 extends MDB2_Statement_Common
+{
+    // }}}
+    // {{{ _execute()
+
+    /**
+     * Execute a prepared query statement helper method.
+     *
+     * @param mixed $result_class string which specifies which result class to use
+     * @param mixed $result_wrap_class string which specifies which class to wrap results in
+     * @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
+     * @access private
+     */
+    function &_execute($result_class = true, $result_wrap_class = false)
+    {
+        $isManip = MDB2::isManip($this->query);
+        $this->db->last_query = $this->query;
+        $this->db->debug($this->query, 'execute');
+        if ($this->db->getOption('disable_query')) {
+            if ($isManip) {
+                $return = 0;
+                return $return;
+            }
+            $null = null;
+            return $null;
+        }
+
+        $connected = $this->db->connect();
+        if (PEAR::isError($connected)) {
+            return $connected;
+        }
+
+        $result = MDB2_OK;
+        $lobs = $quoted_values = array();
+        $i = 0;
+        foreach ($this->values as $parameter => $value) {
+            $type = array_key_exists($parameter, $this->types) ? $this->types[$parameter] : null;
+            if ($type == 'clob' || $type == 'blob') {
+                $lobs[$i]['file'] = false;
+                if (is_resource($value)) {
+                    $fp = $value;
+                    $value = '';
+                    while (!feof($fp)) {
+                        $value.= fread($fp, 8192);
+                    }
+                } elseif (preg_match('/^(\w+:\/\/)(.*)$/', $value, $match)) {
+                    $lobs[$i]['file'] = true;
+                    if ($match[1] == 'file://') {
+                        $value = $match[2];
+                    }
+                }
+                $lobs[$i]['value'] = $value;
+                $lobs[$i]['descriptor'] = @OCINewDescriptor($this->db->connection, OCI_D_LOB);
+                if (!is_object($lobs[$i]['descriptor'])) {
+                    $result = $this->db->raiseError();
+                    break;
+                }
+                $lob_type = ($type == 'blob' ? OCI_B_BLOB : OCI_B_CLOB);
+                if (!@OCIBindByName($this->statement, ':'.$parameter, $lobs[$i]['descriptor'], -1, $lob_type)) {
+                    $result = $this->db->raiseError($this->statement);
+                    break;
+                }
+            } else {
+                $quoted_values[$i] = $this->db->quote($value, $type, false);
+                if (PEAR::isError($quoted_values[$i])) {
+                    return $quoted_values[$i];
+                }
+                if (!@OCIBindByName($this->statement, ':'.$parameter, $quoted_values[$i])) {
+                    $result = $this->db->raiseError($this->statement);
+                    break;
+                }
+            }
+            ++$i;
+        }
+
+        if (!PEAR::isError($result)) {
+            $mode = (!empty($lobs) || $this->db->in_transaction) ? OCI_DEFAULT : OCI_COMMIT_ON_SUCCESS;
+            if (!@OCIExecute($this->statement, $mode)) {
+                $err =& $this->db->raiseError($this->statement);
+                return $err;
+            }
+
+            if (!empty($lobs)) {
+                foreach ($lobs as $i => $stream) {
+                    if (!is_null($stream['value']) && $stream['value'] !== '') {
+                        if ($stream['file']) {
+                            $result = $lobs[$i]['descriptor']->savefile($stream['value']);
+                        } else {
+                            $result = $lobs[$i]['descriptor']->save($stream['value']);
+                        }
+                        if (!$result) {
+                            $result = $this->db->raiseError();
+                            break;
+                        }
+                    }
+                }
+
+                if (!PEAR::isError($result)) {
+                    if (!$this->db->in_transaction) {
+                        if (!@OCICommit($this->db->connection)) {
+                            $result = $this->db->raiseError();
+                        }
+                    } else {
+                        ++$this->db->uncommitedqueries;
+                    }
+                }
+            }
+        }
+
+        $keys = array_keys($lobs);
+        foreach ($keys as $key) {
+            $lobs[$key]['descriptor']->free();
+        }
+
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        if ($isManip) {
+            $return = @OCIRowCount($this->statement);
+        } else {
+            $return = $this->db->_wrapResult($this->statement, $isManip, $this->types,
+                $result_class, $result_wrap_class, $this->row_offset, $this->row_limit);
+        }
+        return $return;
+    }
+
+    // }}}
+    // {{{ free()
+
+    /**
+     * Release resources allocated for the specified prepared query.
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function free()
+    {
+        if (!@OCIFreeStatement($this->statement)) {
+            return $this->db->raiseError();
+        }
+        return MDB2_OK;
+    }
+}
+?>
\ No newline at end of file