forked from GNUsocial/gnu-social
1143 lines
36 KiB
PHP
1143 lines
36 KiB
PHP
<?php
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// vim: set et ts=4 sw=4 fdm=marker:
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// Wrapper
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function odbc_query($query, $connection) {
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//echo "\n".$connection."\n";
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return odbc_do($connection, $query);
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}
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function odbc_fetch_row_wrapper($result) {
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return @array_values(odbc_fetch_array($result));
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}
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function odbc_fetch_assoc ($result){
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return odbc_fetch_array($result);
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}
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// {{{ Class MDB2_Driver_odbc
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/**
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* MDB2 odbc Server driver
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*
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* @package MDB2
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* @category Database
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* @author Frank M. Kromann <frank@kromann.info> rewritten for ODBC by Philipp Schellhaas (mail@pschellhaas.de)
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*/
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class MDB2_Driver_odbc extends MDB2_Driver_Common
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{
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// {{{ properties
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var $string_quoting = array('start' => "'", 'end' => "'", 'escape' => "'", 'escape_pattern' => false);
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var $identifier_quoting = array('start' => '[', 'end' => ']', 'escape' => ']');
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// }}}
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// {{{ constructor
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/**
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* Constructor
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*/
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function __construct()
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{
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parent::__construct();
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$this->phptype = 'odbc';
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$this->dbsyntax = 'odbc';
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$this->supported['sequences'] = 'emulated';
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$this->supported['indexes'] = true;
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$this->supported['affected_rows'] = false;
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$this->supported['transactions'] = false;
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$this->supported['savepoints'] = false;
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$this->supported['summary_functions'] = true;
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$this->supported['order_by_text'] = true;
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$this->supported['current_id'] = 'emulated';
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$this->supported['limit_queries'] = 'emulated';
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$this->supported['LOBs'] = true;
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$this->supported['replace'] = 'emulated';
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$this->supported['sub_selects'] = true;
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$this->supported['triggers'] = true;
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$this->supported['auto_increment'] = true;
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$this->supported['primary_key'] = true;
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$this->supported['result_introspection'] = false;
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$this->supported['prepared_statements'] = 'emulated';
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$this->supported['pattern_escaping'] = true;
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$this->supported['new_link'] = true;
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$this->options['DBA_username'] = false;
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$this->options['DBA_password'] = false;
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$this->options['database_device'] = false;
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$this->options['database_size'] = false;
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$this->options['max_identifiers_length'] = 128; // MS Access: 64
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}
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// }}}
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// {{{ errorInfo()
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/**
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* This method is used to collect information about an error
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*
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* @param integer $error
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* @return array
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* @access public
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*/
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function errorInfo($error = null, $connection = null)
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{
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if (is_null($connection)) {
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$connection = $this->connection;
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}
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$native_code = null;
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if ($connection) {
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$result = @odbc_query('select @@ERROR as ErrorCode', $connection);
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if ($result) {
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$native_code = @odbc_result($result, 0, 0);
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@odbc_free_result($result);
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}
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}
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$native_msg = @odbc_errormsg();
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if (is_null($error)) {
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static $ecode_map;
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if (empty($ecode_map)) {
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$ecode_map = array(
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102 => MDB2_ERROR_SYNTAX,
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110 => MDB2_ERROR_VALUE_COUNT_ON_ROW,
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155 => MDB2_ERROR_NOSUCHFIELD,
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156 => MDB2_ERROR_SYNTAX,
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170 => MDB2_ERROR_SYNTAX,
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207 => MDB2_ERROR_NOSUCHFIELD,
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208 => MDB2_ERROR_NOSUCHTABLE,
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245 => MDB2_ERROR_INVALID_NUMBER,
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319 => MDB2_ERROR_SYNTAX,
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321 => MDB2_ERROR_NOSUCHFIELD,
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325 => MDB2_ERROR_SYNTAX,
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336 => MDB2_ERROR_SYNTAX,
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515 => MDB2_ERROR_CONSTRAINT_NOT_NULL,
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547 => MDB2_ERROR_CONSTRAINT,
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911 => MDB2_ERROR_NOT_FOUND,
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1018 => MDB2_ERROR_SYNTAX,
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1035 => MDB2_ERROR_SYNTAX,
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1801 => MDB2_ERROR_ALREADY_EXISTS,
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1913 => MDB2_ERROR_ALREADY_EXISTS,
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2209 => MDB2_ERROR_SYNTAX,
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2223 => MDB2_ERROR_SYNTAX,
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2248 => MDB2_ERROR_SYNTAX,
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2256 => MDB2_ERROR_SYNTAX,
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2257 => MDB2_ERROR_SYNTAX,
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2627 => MDB2_ERROR_CONSTRAINT,
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2714 => MDB2_ERROR_ALREADY_EXISTS,
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3607 => MDB2_ERROR_DIVZERO,
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3701 => MDB2_ERROR_NOSUCHTABLE,
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7630 => MDB2_ERROR_SYNTAX,
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8134 => MDB2_ERROR_DIVZERO,
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9303 => MDB2_ERROR_SYNTAX,
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9317 => MDB2_ERROR_SYNTAX,
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9318 => MDB2_ERROR_SYNTAX,
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9331 => MDB2_ERROR_SYNTAX,
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9332 => MDB2_ERROR_SYNTAX,
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15253 => MDB2_ERROR_SYNTAX,
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);
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}
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if (isset($ecode_map[$native_code])) {
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if ($native_code == 3701
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&& preg_match('/Cannot drop the index/i', $native_msg)
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) {
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$error = MDB2_ERROR_NOT_FOUND;
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} else {
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$error = $ecode_map[$native_code];
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}
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}
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}
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return array($error, $native_code, $native_msg);
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}
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// }}}
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// {{{ function escapePattern($text)
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/**
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* Quotes pattern (% and _) characters in a string)
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*
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* @param string the input string to quote
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*
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* @return string quoted string
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*
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* @access public
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*/
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function escapePattern($text)
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{
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$text = str_replace("[", "[ [ ]", $text);
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foreach ($this->wildcards as $wildcard) {
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$text = str_replace($wildcard, '[' . $wildcard . ']', $text);
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}
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return $text;
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}
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// }}}
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// {{{ beginTransaction()
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/**
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* Start a transaction or set a savepoint.
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*
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* @param string name of a savepoint to set
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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*
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* @access public
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*/
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function beginTransaction($savepoint = null)
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{
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$this->debug('Starting transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
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if (!is_null($savepoint)) {
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if (!$this->in_transaction) {
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return $this->raiseError(MDB2_ERROR_INVALID, null, null,
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'savepoint cannot be released when changes are auto committed', __FUNCTION__);
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}
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$query = 'SAVE TRANSACTION '.$savepoint;
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return $this->_doQuery($query, true);
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} elseif ($this->in_transaction) {
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return MDB2_OK; //nothing to do
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}
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if (!$this->destructor_registered && $this->opened_persistent) {
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$this->destructor_registered = true;
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register_shutdown_function('MDB2_closeOpenTransactions');
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}
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$result =& $this->_doQuery('BEGIN TRANSACTION', true);
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if (MDB2::isError($result)) {
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return $result;
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}
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$this->in_transaction = true;
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return MDB2_OK;
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}
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// }}}
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// {{{ commit()
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/**
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* Commit the database changes done during a transaction that is in
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* progress or release a savepoint. This function may only be called when
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* auto-committing is disabled, otherwise it will fail. Therefore, a new
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* transaction is implicitly started after committing the pending changes.
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*
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* @param string name of a savepoint to release
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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*
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* @access public
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*/
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function commit($savepoint = null)
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{
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$this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
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if (!$this->in_transaction) {
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return $this->raiseError(MDB2_ERROR_INVALID, null, null,
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'commit/release savepoint cannot be done changes are auto committed', __FUNCTION__);
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}
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if (!is_null($savepoint)) {
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return MDB2_OK;
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}
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$result =& $this->_doQuery('COMMIT TRANSACTION', true);
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if (MDB2::isError($result)) {
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return $result;
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}
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$this->in_transaction = false;
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return MDB2_OK;
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}
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// }}}
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// {{{ rollback()
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/**
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* Cancel any database changes done during a transaction or since a specific
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* savepoint that is in progress. This function may only be called when
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* auto-committing is disabled, otherwise it will fail. Therefore, a new
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* transaction is implicitly started after canceling the pending changes.
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*
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* @param string name of a savepoint to rollback to
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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*
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* @access public
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*/
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function rollback($savepoint = null)
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{
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$this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
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if (!$this->in_transaction) {
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return $this->raiseError(MDB2_ERROR_INVALID, null, null,
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'rollback cannot be done changes are auto committed', __FUNCTION__);
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}
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if (!is_null($savepoint)) {
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$query = 'ROLLBACK TRANSACTION '.$savepoint;
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return $this->_doQuery($query, true);
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}
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$result =& $this->_doQuery('ROLLBACK TRANSACTION', true);
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if (MDB2::isError($result)) {
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return $result;
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}
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$this->in_transaction = false;
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return MDB2_OK;
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}
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// }}}
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// {{{ _doConnect()
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/**
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* do the grunt work of the connect
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*
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* @return connection on success or MDB2 Error Object on failure
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* @access protected
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*/
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function _doConnect($username, $password, $persistent = false)
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{
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if (!extension_loaded($this->phptype)) {
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return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
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'extension '.$this->phptype.' is not compiled into PHP', __FUNCTION__);
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}
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$params = array(
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$this->dsn['hostspec'] ? $this->dsn['hostspec'] : 'localhost',
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$username ? $username : null,
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$password ? $password : null,
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);
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if ($this->dsn['port']) {
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$params[0].= ((substr(PHP_OS, 0, 3) == 'WIN') ? ',' : ':').$this->dsn['port'];
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}
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if (!$persistent) {
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if ($this->_isNewLinkSet()) {
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$params[] = true;
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} else {
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$params[] = false;
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}
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}
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$connect_function = $persistent ? 'odbc_pconnect' : 'odbc_connect';
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$params = array($this->database_name,$this->dsn[username],$this->dsn[password]);
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$connection = @call_user_func_array($connect_function, $params);
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if ($connection <= 0) {
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return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
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'unable to establish a connection', __FUNCTION__, __FUNCTION__);
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}
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//odbc_query('SET ANSI_NULL_DFLT_ON ON', $connection);
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/*
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if (!empty($this->dsn['charset'])) {
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$result = $this->setCharset($this->dsn['charset'], $connection);
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if (MDB2::isError($result)) {
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return $result;
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}
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}
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*/
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if ((bool)ini_get('odbc.datetimeconvert')) {
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@ini_set('odbc.datetimeconvert', '0');
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}
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/*
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if (empty($this->dsn['disable_iso_date'])) {
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@odbc_query('SET DATEFORMAT ymd', $connection);
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}
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*/
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return $connection;
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}
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// }}}
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// {{{ connect()
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/**
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* Connect to the database
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*
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* @return true on success, MDB2 Error Object on failure
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*/
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function connect()
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{
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if (is_resource($this->connection)) {
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//if (count(array_diff($this->connected_dsn, $this->dsn)) == 0
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if (MDB2::areEquals($this->connected_dsn, $this->dsn)
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&& $this->opened_persistent == $this->options['persistent']
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) {
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return MDB2_OK;
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}
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$this->disconnect(false);
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}
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$connection = $this->_doConnect(
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$this->dsn['username'],
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$this->dsn['password'],
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$this->options['persistent']
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);
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if (MDB2::isError($connection)) {
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return $connection;
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}
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$this->connection = $connection;
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$this->connected_dsn = $this->dsn;
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$this->connected_database_name = '';
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$this->opened_persistent = $this->options['persistent'];
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$this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
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if ($this->database_name) {
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if ($this->database_name != $this->connected_database_name) {
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/*
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if (!odbc_select_db($this->database_name, $connection)) {
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$err = $this->raiseError(null, null, null,
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'Could not select the database: '.$this->database_name, __FUNCTION__);
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return $err;
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}
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*/
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$this->connected_database_name = $this->database_name;
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}
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}
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return MDB2_OK;
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}
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// }}}
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// {{{ databaseExists()
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/**
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* check if given database name is exists?
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*
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* @param string $name name of the database that should be checked
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*
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* @return mixed true/false on success, a MDB2 error on failure
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* @access public
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*/
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function databaseExists($name)
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{
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$connection = $this->_doConnect($this->dsn['username'],
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$this->dsn['password'],
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$this->options['persistent']);
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if (MDB2::isError($connection)) {
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return $connection;
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}
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$result = odbc_select_db($name, $connection);
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$errorInfo = $this->errorInfo(null, $connection);
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odbc_close($connection);
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if (!$result) {
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if ($errorInfo[0] != MDB2_ERROR_NOT_FOUND) {
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exit;
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$result = $this->raiseError($errorInfo[0], null, null, $errorInfo[2], __FUNCTION__);
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return $result;
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}
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$result = false;
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}
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return $result;
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}
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// }}}
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// {{{ disconnect()
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/**
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* Log out and disconnect from the database.
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*
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* @param boolean $force if the disconnect should be forced even if the
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* connection is opened persistently
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* @return mixed true on success, false if not connected and error
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* object on error
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* @access public
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*/
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function disconnect($force = true)
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{
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if (is_resource($this->connection)) {
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if ($this->in_transaction) {
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$dsn = $this->dsn;
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$database_name = $this->database_name;
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$persistent = $this->options['persistent'];
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$this->dsn = $this->connected_dsn;
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$this->database_name = $this->connected_database_name;
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$this->options['persistent'] = $this->opened_persistent;
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$this->rollback();
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$this->dsn = $dsn;
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$this->database_name = $database_name;
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$this->options['persistent'] = $persistent;
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}
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if (!$this->opened_persistent || $force) {
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$ok = odbc_close($this->connection);
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if (!$ok) {
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return $this->raiseError(MDB2_ERROR_DISCONNECT_FAILED,
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null, null, null, __FUNCTION__);
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}
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}
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} else {
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return false;
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}
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return parent::disconnect($force);
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}
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// }}}
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// {{{ standaloneQuery()
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|
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/**
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* execute a query as DBA
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*
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* @param string $query the SQL query
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|
* @param mixed $types array that contains the types of the columns in
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* the result set
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* @param boolean $is_manip if the query is a manipulation query
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function &standaloneQuery($query, $types = null, $is_manip = false)
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{
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$user = $this->options['DBA_username']? $this->options['DBA_username'] : $this->dsn['username'];
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$pass = $this->options['DBA_password']? $this->options['DBA_password'] : $this->dsn['password'];
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$connection = $this->_doConnect($user, $pass, $this->options['persistent']);
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if (MDB2::isError($connection)) {
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return $connection;
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}
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$offset = $this->offset;
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$limit = $this->limit;
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$this->offset = $this->limit = 0;
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$query = $this->_modifyQuery($query, $is_manip, $limit, $offset);
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$result =& $this->_doQuery($query, $is_manip, $connection, $this->database_name);
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if (!MDB2::isError($result)) {
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$result = $this->_affectedRows($connection, $result);
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}
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odbc_close($connection);
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return $result;
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}
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// }}}
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// {{{ _doQuery()
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|
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/**
|
|
* Execute a query
|
|
* @param string $query query
|
|
* @param boolean $is_manip if the query is a manipulation query
|
|
* @param resource $connection
|
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* @param string $database_name
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* @return result or error object
|
|
* @access protected
|
|
*/
|
|
function &_doQuery($query, $is_manip = false, $connection = null, $database_name = null)
|
|
{
|
|
// echo "<hr>".$query."<br>\n";
|
|
$this->last_query = $query;
|
|
$result = $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'pre'));
|
|
if ($result) {
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
$query = $result;
|
|
}
|
|
if ($this->options['disable_query']) {
|
|
$result = $is_manip ? 0 : null;
|
|
return $result;
|
|
}
|
|
|
|
if (is_null($connection)) {
|
|
$connection = $this->getConnection();
|
|
if (MDB2::isError($connection)) {
|
|
return $connection;
|
|
}
|
|
}
|
|
if (is_null($database_name)) {
|
|
$database_name = $this->database_name;
|
|
}
|
|
|
|
if ($database_name) {
|
|
if ($database_name != $this->connected_database_name) {
|
|
/*
|
|
if (!odbc_select_db($database_name, $connection)) {
|
|
$err = $this->raiseError(null, null, null,
|
|
'Could not select the database: '.$database_name, __FUNCTION__);
|
|
return $err;
|
|
}
|
|
*/
|
|
|
|
$this->connected_database_name = $database_name;
|
|
}
|
|
}
|
|
|
|
$result = odbc_query($query, $connection);
|
|
if (!$result) {
|
|
$err =& $this->raiseError(null, null, null,
|
|
'Could not execute statement', __FUNCTION__);
|
|
return $err;
|
|
}
|
|
|
|
$this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'post', 'result' => $result));
|
|
//print_r(odbc_fetch_array($result));
|
|
return $result;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ _affectedRows()
|
|
|
|
/**
|
|
* Returns the number of rows affected
|
|
*
|
|
* @param resource $result
|
|
* @param resource $connection
|
|
* @return mixed MDB2 Error Object or the number of rows affected
|
|
* @access private
|
|
*/
|
|
function _affectedRows($connection, $result = null)
|
|
{
|
|
if (is_null($connection)) {
|
|
$connection = $this->getConnection();
|
|
if (MDB2::isError($connection)) {
|
|
return $connection;
|
|
}
|
|
}
|
|
return odbc_rows_affected($connection);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ _modifyQuery()
|
|
|
|
/**
|
|
* Changes a query string for various DBMS specific reasons
|
|
*
|
|
* @param string $query query to modify
|
|
* @param boolean $is_manip if it is a DML query
|
|
* @param integer $limit limit the number of rows
|
|
* @param integer $offset start reading from given offset
|
|
* @return string modified query
|
|
* @access protected
|
|
*/
|
|
function _modifyQuery($query, $is_manip, $limit, $offset)
|
|
{
|
|
if ($limit > 0) {
|
|
$fetch = $offset + $limit;
|
|
if (!$is_manip) {
|
|
return preg_replace('/^([\s(])*SELECT( DISTINCT)?(?!\s*TOP\s*\()/i',
|
|
"\\1SELECT\\2 TOP $fetch", $query);
|
|
}
|
|
}
|
|
return $query;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ getServerVersion()
|
|
|
|
/**
|
|
* return version information about the server
|
|
*
|
|
* @param bool $native determines if the raw version string should be returned
|
|
* @return mixed array/string with version information or MDB2 error object
|
|
* @access public
|
|
*/
|
|
function getServerVersion($native = false)
|
|
{
|
|
if ($this->connected_server_info) {
|
|
$server_info = $this->connected_server_info;
|
|
} else {
|
|
$query = 'SELECT @@VERSION';
|
|
$server_info = $this->queryOne($query, 'text');
|
|
if (MDB2::isError($server_info)) {
|
|
return $server_info;
|
|
}
|
|
}
|
|
// cache server_info
|
|
$this->connected_server_info = $server_info;
|
|
if (!$native && !MDB2::isError($server_info)) {
|
|
if (preg_match('/(\d+)\.(\d+)\.(\d+)/', $server_info, $tmp)) {
|
|
$server_info = array(
|
|
'major' => $tmp[1],
|
|
'minor' => $tmp[2],
|
|
'patch' => $tmp[3],
|
|
'extra' => null,
|
|
'native' => $server_info,
|
|
);
|
|
} else {
|
|
$server_info = array(
|
|
'major' => null,
|
|
'minor' => null,
|
|
'patch' => null,
|
|
'extra' => null,
|
|
'native' => $server_info,
|
|
);
|
|
}
|
|
}
|
|
return $server_info;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ _checkSequence
|
|
|
|
/**
|
|
* Checks if there's a sequence that exists.
|
|
*
|
|
* @param string $seq_name The sequence name to verify.
|
|
* @return bool $tableExists The value if the table exists or not
|
|
* @access private
|
|
*/
|
|
function _checkSequence($seq_name)
|
|
{
|
|
$query = "SELECT * FROM $seq_name";
|
|
$tableExists =& $this->_doQuery($query, true);
|
|
if (MDB2::isError($tableExists)) {
|
|
if ($tableExists->getCode() == MDB2_ERROR_NOSUCHTABLE) {
|
|
return false;
|
|
}
|
|
//return $tableExists;
|
|
return false;
|
|
}
|
|
return odbc_result($tableExists, 0, 0);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ nextID()
|
|
|
|
/**
|
|
* Returns the next free id of a sequence
|
|
*
|
|
* @param string $seq_name name of the sequence
|
|
* @param boolean $ondemand when true the sequence is
|
|
* automatic created, if it
|
|
* not exists
|
|
*
|
|
* @return mixed MDB2 Error Object or id
|
|
* @access public
|
|
*/
|
|
function nextID($seq_name, $ondemand = true)
|
|
{
|
|
$sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
|
|
$seqcol_name = $this->quoteIdentifier($this->options['seqcol_name'], true);
|
|
$this->pushErrorHandling(PEAR_ERROR_RETURN);
|
|
$this->expectError(MDB2_ERROR_NOSUCHTABLE);
|
|
|
|
$seq_val = $this->_checkSequence($sequence_name);
|
|
|
|
if ($seq_val) {
|
|
$query = "SET IDENTITY_INSERT $sequence_name OFF ".
|
|
"INSERT INTO $sequence_name DEFAULT VALUES";
|
|
} else {
|
|
$query = "INSERT INTO $sequence_name ($seqcol_name) VALUES (0)";
|
|
}
|
|
$result =& $this->_doQuery($query, true);
|
|
$this->popExpect();
|
|
$this->popErrorHandling();
|
|
if (MDB2::isError($result)) {
|
|
if ($ondemand && !$this->_checkSequence($sequence_name)) {
|
|
$this->loadModule('Manager', null, true);
|
|
$result = $this->manager->createSequence($seq_name);
|
|
if (MDB2::isError($result)) {
|
|
return $this->raiseError($result, null, null,
|
|
'on demand sequence '.$seq_name.' could not be created', __FUNCTION__);
|
|
} else {
|
|
/**
|
|
* Little off-by-one problem with the sequence emulation
|
|
* here being fixed, that instead of re-calling nextID
|
|
* and forcing an increment by one, we simply check if it
|
|
* exists, then we get the last inserted id if it does.
|
|
*
|
|
* In theory, $seq_name should be created otherwise there would
|
|
* have been an error thrown somewhere up there..
|
|
*
|
|
* @todo confirm
|
|
*/
|
|
if ($this->_checkSequence($seq_name)) {
|
|
return $this->lastInsertID($seq_name);
|
|
}
|
|
|
|
return $this->nextID($seq_name, false);
|
|
}
|
|
}
|
|
return $result;
|
|
}
|
|
$value = $this->lastInsertID($sequence_name);
|
|
if (is_numeric($value)) {
|
|
$query = "DELETE FROM $sequence_name WHERE $seqcol_name < $value";
|
|
$result =& $this->_doQuery($query, true);
|
|
if (MDB2::isError($result)) {
|
|
$this->warnings[] = 'nextID: could not delete previous sequence table values from '.$seq_name;
|
|
}
|
|
}
|
|
return $value;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ lastInsertID()
|
|
|
|
/**
|
|
* Returns the autoincrement ID if supported or $id or fetches the current
|
|
* ID in a sequence called: $table.(empty($field) ? '' : '_'.$field)
|
|
*
|
|
* @param string $table name of the table into which a new row was inserted
|
|
* @param string $field name of the field into which a new row was inserted
|
|
*
|
|
* @return mixed MDB2 Error Object or id
|
|
* @access public
|
|
*/
|
|
function lastInsertID($table = null, $field = null)
|
|
{
|
|
$server_info = $this->getServerVersion();
|
|
if (is_array($server_info) && !is_null($server_info['major'])
|
|
&& $server_info['major'] >= 8
|
|
) {
|
|
$query = "SELECT IDENT_CURRENT('$table')";
|
|
} else {
|
|
$query = "SELECT @@IDENTITY";
|
|
if (!is_null($table)) {
|
|
$query .= ' FROM '.$this->quoteIdentifier($table, true);
|
|
}
|
|
}
|
|
|
|
return $this->queryOne($query, 'integer');
|
|
}
|
|
|
|
// }}}
|
|
}
|
|
|
|
// }}}
|
|
// {{{ Class MDB2_Result_odbc
|
|
|
|
/**
|
|
* MDB2 odbc Server result driver
|
|
*
|
|
* @package MDB2
|
|
* @category Database
|
|
* @author Frank M. Kromann <frank@kromann.info>
|
|
*/
|
|
class MDB2_Result_odbc 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 (!is_array(odbc_fetch_row_wrapper($this->result))) {
|
|
$this->offset_count = $this->limit;
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
return MDB2_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ 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 (MDB2::isError($seek)) {
|
|
return $seek;
|
|
}
|
|
}
|
|
if ($fetchmode == MDB2_FETCHMODE_DEFAULT) {
|
|
$fetchmode = $this->db->fetchmode;
|
|
}
|
|
if ( $fetchmode == MDB2_FETCHMODE_ASSOC
|
|
|| $fetchmode == MDB2_FETCHMODE_OBJECT
|
|
) {
|
|
$row = odbc_fetch_assoc($this->result);
|
|
|
|
if (is_array($row)
|
|
&& $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
|
|
) {
|
|
$row = array_change_key_case($row, $this->db->options['field_case']);
|
|
}
|
|
} else {
|
|
$row = odbc_fetch_row_wrapper($this->result);
|
|
|
|
|
|
}
|
|
if (!$row) {
|
|
if ($this->result === false) {
|
|
$err =& $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
|
'resultset has already been freed', __FUNCTION__);
|
|
return $err;
|
|
}
|
|
$null = null;
|
|
return $null;
|
|
}
|
|
$mode = $this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL;
|
|
$rtrim = false;
|
|
if ($this->db->options['portability'] & MDB2_PORTABILITY_RTRIM) {
|
|
if (empty($this->types)) {
|
|
$mode += MDB2_PORTABILITY_RTRIM;
|
|
} else {
|
|
$rtrim = true;
|
|
}
|
|
}
|
|
if ($mode) {
|
|
$this->db->_fixResultArrayValues($row, $mode);
|
|
}
|
|
if ( ( $fetchmode != MDB2_FETCHMODE_ASSOC
|
|
&& $fetchmode != MDB2_FETCHMODE_OBJECT)
|
|
&& !empty($this->types)
|
|
) {
|
|
$row = $this->db->datatype->convertResultRow($this->types, $row, $rtrim);
|
|
} elseif (($fetchmode == MDB2_FETCHMODE_ASSOC
|
|
|| $fetchmode == MDB2_FETCHMODE_OBJECT)
|
|
&& !empty($this->types_assoc)
|
|
) {
|
|
$row = $this->db->datatype->convertResultRow($this->types_assoc, $row, $rtrim);
|
|
}
|
|
if (!empty($this->values)) {
|
|
$this->_assignBindColumns($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 Array variable that holds the names of columns as keys
|
|
* or an MDB2 error on failure.
|
|
* Some DBMS may not return any columns when the result set
|
|
* does not contain any rows.
|
|
* @access private
|
|
*/
|
|
function _getColumnNames()
|
|
{
|
|
$columns = array();
|
|
$numcols = $this->numCols();
|
|
if (MDB2::isError($numcols)) {
|
|
return $numcols;
|
|
}
|
|
for ($column = 0; $column < $numcols; $column++) {
|
|
$column_name = odbc_field_name($this->result, $column);
|
|
$columns[$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()
|
|
{
|
|
$cols = odbc_num_fields($this->result);
|
|
if (is_null($cols)) {
|
|
if ($this->result === false) {
|
|
return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
|
'resultset has already been freed', __FUNCTION__);
|
|
} elseif (is_null($this->result)) {
|
|
return count($this->types);
|
|
}
|
|
return $this->db->raiseError(null, null, null,
|
|
'Could not get column count', __FUNCTION__);
|
|
}
|
|
return $cols;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ nextResult()
|
|
|
|
/**
|
|
* Move the internal result pointer to the next available result
|
|
*
|
|
* @return true on success, false if there is no more result set or an error object on failure
|
|
* @access public
|
|
*/
|
|
function nextResult()
|
|
{
|
|
if ($this->result === false) {
|
|
return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
|
'resultset has already been freed', __FUNCTION__);
|
|
} elseif (is_null($this->result)) {
|
|
return false;
|
|
}
|
|
return odbc_next_result($this->result);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ free()
|
|
|
|
/**
|
|
* Free the internal resources associated with $result.
|
|
*
|
|
* @return boolean true on success, false if $result is invalid
|
|
* @access public
|
|
*/
|
|
function free()
|
|
{
|
|
if (is_resource($this->result) && $this->db->connection) {
|
|
$free = odbc_free_result($this->result);
|
|
if ($free === false) {
|
|
return $this->db->raiseError(null, null, null,
|
|
'Could not free result', __FUNCTION__);
|
|
}
|
|
}
|
|
$this->result = false;
|
|
return MDB2_OK;
|
|
}
|
|
|
|
// }}}
|
|
}
|
|
|
|
// }}}
|
|
// {{{ class MDB2_BufferedResult_odbc
|
|
|
|
/**
|
|
* MDB2 odbc Server buffered result driver
|
|
*
|
|
* @package MDB2
|
|
* @category Database
|
|
* @author Frank M. Kromann <frank@kromann.info>
|
|
*/
|
|
class MDB2_BufferedResult_odbc extends MDB2_Result_odbc
|
|
{
|
|
// {{{ 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 ($this->rownum != ($rownum - 1) && !odbc_data_seek($this->result, $rownum)) {
|
|
if ($this->result === false) {
|
|
return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
|
'resultset has already been freed', __FUNCTION__);
|
|
} elseif (is_null($this->result)) {
|
|
return MDB2_OK;
|
|
}
|
|
return $this->db->raiseError(MDB2_ERROR_INVALID, null, null,
|
|
'tried to seek to an invalid row number ('.$rownum.')', __FUNCTION__);
|
|
}
|
|
$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()
|
|
{
|
|
$numrows = $this->numRows();
|
|
if (MDB2::isError($numrows)) {
|
|
return $numrows;
|
|
}
|
|
return $this->rownum < ($numrows - 1);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ numRows()
|
|
|
|
/**
|
|
* Returns the number of rows in a result object
|
|
*
|
|
* @return mixed MDB2 Error Object or the number of rows
|
|
* @access public
|
|
*/
|
|
function numRows()
|
|
{
|
|
$rows = odbc_num_rows($this->result);
|
|
|
|
// Hack the Planet
|
|
$count = 0;
|
|
while ($row = odbc_fetch_row($this->result)) {
|
|
$count++;
|
|
}
|
|
@odbc_fetch_row($this->result, 0);
|
|
if($count >= 0) {
|
|
$rows = $count;
|
|
}
|
|
|
|
if (is_null($rows)) {
|
|
if ($this->result === false) {
|
|
return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
|
|
'resultset has already been freed', __FUNCTION__);
|
|
} elseif (is_null($this->result)) {
|
|
return 0;
|
|
}
|
|
return $this->db->raiseError(null, null, null,
|
|
'Could not get row count', __FUNCTION__);
|
|
}
|
|
if ($this->limit) {
|
|
$rows -= $this->offset;
|
|
if ($rows > $this->limit) {
|
|
$rows = $this->limit;
|
|
}
|
|
if ($rows < 0) {
|
|
$rows = 0;
|
|
}
|
|
}
|
|
return $rows;
|
|
}
|
|
}
|
|
|
|
// }}}
|
|
// {{{ MDB2_Statement_odbc
|
|
|
|
/**
|
|
* MDB2 odbc Server statement driver
|
|
*
|
|
* @package MDB2
|
|
* @category Database
|
|
* @author Frank M. Kromann <frank@kromann.info>
|
|
*/
|
|
class MDB2_Statement_odbc extends MDB2_Statement_Common
|
|
{
|
|
|
|
}
|
|
|
|
// }}}
|
|
?>
|