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<?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;
}
}
?>

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