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- <?php
- require_once 'common.php';
- class DB_mssql extends DB_common
- {
-
-
- public $phptype = 'mssql';
-
- public $dbsyntax = 'mssql';
-
- public $features = array(
- 'limit' => 'emulate',
- 'new_link' => false,
- 'numrows' => true,
- 'pconnect' => true,
- 'prepare' => false,
- 'ssl' => false,
- 'transactions' => true,
- );
-
-
- public $errorcode_map = array(
- 102 => DB_ERROR_SYNTAX,
- 110 => DB_ERROR_VALUE_COUNT_ON_ROW,
- 155 => DB_ERROR_NOSUCHFIELD,
- 156 => DB_ERROR_SYNTAX,
- 170 => DB_ERROR_SYNTAX,
- 207 => DB_ERROR_NOSUCHFIELD,
- 208 => DB_ERROR_NOSUCHTABLE,
- 245 => DB_ERROR_INVALID_NUMBER,
- 319 => DB_ERROR_SYNTAX,
- 321 => DB_ERROR_NOSUCHFIELD,
- 325 => DB_ERROR_SYNTAX,
- 336 => DB_ERROR_SYNTAX,
- 515 => DB_ERROR_CONSTRAINT_NOT_NULL,
- 547 => DB_ERROR_CONSTRAINT,
- 1018 => DB_ERROR_SYNTAX,
- 1035 => DB_ERROR_SYNTAX,
- 1913 => DB_ERROR_ALREADY_EXISTS,
- 2209 => DB_ERROR_SYNTAX,
- 2223 => DB_ERROR_SYNTAX,
- 2248 => DB_ERROR_SYNTAX,
- 2256 => DB_ERROR_SYNTAX,
- 2257 => DB_ERROR_SYNTAX,
- 2627 => DB_ERROR_CONSTRAINT,
- 2714 => DB_ERROR_ALREADY_EXISTS,
- 3607 => DB_ERROR_DIVZERO,
- 3701 => DB_ERROR_NOSUCHTABLE,
- 7630 => DB_ERROR_SYNTAX,
- 8134 => DB_ERROR_DIVZERO,
- 9303 => DB_ERROR_SYNTAX,
- 9317 => DB_ERROR_SYNTAX,
- 9318 => DB_ERROR_SYNTAX,
- 9331 => DB_ERROR_SYNTAX,
- 9332 => DB_ERROR_SYNTAX,
- 15253 => DB_ERROR_SYNTAX,
- );
-
- public $connection;
-
- public $dsn = array();
-
- public $autocommit = true;
-
- public $transaction_opcount = 0;
-
- public $_db = null;
-
-
-
- public function __construct()
- {
- parent::__construct();
- }
-
-
-
- public function connect($dsn, $persistent = false)
- {
- if (!PEAR::loadExtension('mssql') && !PEAR::loadExtension('sybase')
- && !PEAR::loadExtension('sybase_ct')) {
- return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);
- }
- $this->dsn = $dsn;
- if ($dsn['dbsyntax']) {
- $this->dbsyntax = $dsn['dbsyntax'];
- }
- $params = array(
- $dsn['hostspec'] ? $dsn['hostspec'] : 'localhost',
- $dsn['username'] ? $dsn['username'] : null,
- $dsn['password'] ? $dsn['password'] : null,
- );
- if ($dsn['port']) {
- $params[0] .= ((substr(PHP_OS, 0, 3) == 'WIN') ? ',' : ':')
- . $dsn['port'];
- }
- $connect_function = $persistent ? 'mssql_pconnect' : 'mssql_connect';
- $this->connection = @call_user_func_array($connect_function, $params);
- if (!$this->connection) {
- return $this->raiseError(
- DB_ERROR_CONNECT_FAILED,
- null,
- null,
- null,
- @mssql_get_last_message()
- );
- }
- if ($dsn['database']) {
- if (!@mssql_select_db($dsn['database'], $this->connection)) {
- return $this->raiseError(
- DB_ERROR_NODBSELECTED,
- null,
- null,
- null,
- @mssql_get_last_message()
- );
- }
- $this->_db = $dsn['database'];
- }
- return DB_OK;
- }
-
-
-
- public function disconnect()
- {
- $ret = @mssql_close($this->connection);
- $this->connection = null;
- return $ret;
- }
-
-
-
- public function simpleQuery($query)
- {
- $ismanip = $this->_checkManip($query);
- $this->last_query = $query;
- if (!@mssql_select_db($this->_db, $this->connection)) {
- return $this->mssqlRaiseError(DB_ERROR_NODBSELECTED);
- }
- $query = $this->modifyQuery($query);
- if (!$this->autocommit && $ismanip) {
- if ($this->transaction_opcount == 0) {
- $result = @mssql_query('BEGIN TRAN', $this->connection);
- if (!$result) {
- return $this->mssqlRaiseError();
- }
- }
- $this->transaction_opcount++;
- }
- $result = @mssql_query($query, $this->connection);
- if (!$result) {
- return $this->mssqlRaiseError();
- }
-
-
- return $ismanip ? DB_OK : $result;
- }
-
-
-
- public function mssqlRaiseError($code = null)
- {
- $message = @mssql_get_last_message();
- if (!$code) {
- $code = $this->errorNative();
- }
- return $this->raiseError(
- $this->errorCode($code, $message),
- null,
- null,
- null,
- "$code - $message"
- );
- }
-
-
-
- public function errorNative()
- {
- $res = @mssql_query('select @@ERROR as ErrorCode', $this->connection);
- if (!$res) {
- return DB_ERROR;
- }
- $row = @mssql_fetch_row($res);
- return $row[0];
- }
-
-
-
- public function errorCode($nativecode = null, $msg = '')
- {
- if (!$nativecode) {
- $nativecode = $this->errorNative();
- }
- if (isset($this->errorcode_map[$nativecode])) {
- if ($nativecode == 3701
- && preg_match('/Cannot drop the index/i', $msg)) {
- return DB_ERROR_NOT_FOUND;
- }
- return $this->errorcode_map[$nativecode];
- } else {
- return DB_ERROR;
- }
- }
-
-
-
- public function nextResult($result)
- {
- return @mssql_next_result($result);
- }
-
-
-
- public function fetchInto($result, &$arr, $fetchmode, $rownum = null)
- {
- if ($rownum !== null) {
- if (!@mssql_data_seek($result, $rownum)) {
- return null;
- }
- }
- if ($fetchmode & DB_FETCHMODE_ASSOC) {
- $arr = @mssql_fetch_assoc($result);
- if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) {
- $arr = array_change_key_case($arr, CASE_LOWER);
- }
- } else {
- $arr = @mssql_fetch_row($result);
- }
- if (!$arr) {
- return null;
- }
- if ($this->options['portability'] & DB_PORTABILITY_RTRIM) {
- $this->_rtrimArrayValues($arr);
- }
- if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) {
- $this->_convertNullArrayValuesToEmpty($arr);
- }
- return DB_OK;
- }
-
-
-
- public function freeResult($result)
- {
- return is_resource($result) ? mssql_free_result($result) : false;
- }
-
-
-
- public function numCols($result)
- {
- $cols = @mssql_num_fields($result);
- if (!$cols) {
- return $this->mssqlRaiseError();
- }
- return $cols;
- }
-
-
-
- public function numRows($result)
- {
- $rows = @mssql_num_rows($result);
- if ($rows === false) {
- return $this->mssqlRaiseError();
- }
- return $rows;
- }
-
-
-
- public function autoCommit($onoff = false)
- {
-
-
- $this->autocommit = $onoff ? true : false;
- return DB_OK;
- }
-
-
-
- public function commit()
- {
- if ($this->transaction_opcount > 0) {
- if (!@mssql_select_db($this->_db, $this->connection)) {
- return $this->mssqlRaiseError(DB_ERROR_NODBSELECTED);
- }
- $result = @mssql_query('COMMIT TRAN', $this->connection);
- $this->transaction_opcount = 0;
- if (!$result) {
- return $this->mssqlRaiseError();
- }
- }
- return DB_OK;
- }
-
- public function rollback()
- {
- if ($this->transaction_opcount > 0) {
- if (!@mssql_select_db($this->_db, $this->connection)) {
- return $this->mssqlRaiseError(DB_ERROR_NODBSELECTED);
- }
- $result = @mssql_query('ROLLBACK TRAN', $this->connection);
- $this->transaction_opcount = 0;
- if (!$result) {
- return $this->mssqlRaiseError();
- }
- }
- return DB_OK;
- }
-
-
-
- public function affectedRows()
- {
- if ($this->_last_query_manip) {
- $res = @mssql_query('select @@rowcount', $this->connection);
- if (!$res) {
- return $this->mssqlRaiseError();
- }
- $ar = @mssql_fetch_row($res);
- if (!$ar) {
- $result = 0;
- } else {
- @mssql_free_result($res);
- $result = $ar[0];
- }
- } else {
- $result = 0;
- }
- return $result;
- }
-
-
-
- public function nextId($seq_name, $ondemand = true)
- {
- $seqname = $this->getSequenceName($seq_name);
- if (!@mssql_select_db($this->_db, $this->connection)) {
- return $this->mssqlRaiseError(DB_ERROR_NODBSELECTED);
- }
- $repeat = 0;
- do {
- $this->pushErrorHandling(PEAR_ERROR_RETURN);
- $result = $this->query("INSERT INTO $seqname (vapor) VALUES (0)");
- $this->popErrorHandling();
- if ($ondemand && DB::isError($result) &&
- ($result->getCode() == DB_ERROR || $result->getCode() == DB_ERROR_NOSUCHTABLE)) {
- $repeat = 1;
- $result = $this->createSequence($seq_name);
- if (DB::isError($result)) {
- return $this->raiseError($result);
- }
- } elseif (!DB::isError($result)) {
- $result = $this->query("SELECT IDENT_CURRENT('$seqname')");
- if (DB::isError($result)) {
-
- $result = $this->query("SELECT @@IDENTITY FROM $seqname");
- }
- $repeat = 0;
- } else {
- $repeat = false;
- }
- } while ($repeat);
- if (DB::isError($result)) {
- return $this->raiseError($result);
- }
- $result = $result->fetchRow(DB_FETCHMODE_ORDERED);
- return $result[0];
- }
-
-
-
- public function createSequence($seq_name)
- {
- return $this->query('CREATE TABLE '
- . $this->getSequenceName($seq_name)
- . ' ([id] [int] IDENTITY (1, 1) NOT NULL,'
- . ' [vapor] [int] NULL)');
- }
-
-
-
- public function dropSequence($seq_name)
- {
- return $this->query('DROP TABLE ' . $this->getSequenceName($seq_name));
- }
-
-
-
- public function escapeSimple($str)
- {
- return str_replace(
- array("'", "\\\r\n", "\\\n"),
- array("''", "\\\\\r\n\r\n", "\\\\\n\n"),
- $str
- );
- }
-
-
-
- public function quoteIdentifier($str)
- {
- return '[' . str_replace(']', ']]', $str) . ']';
- }
-
-
-
- public function tableInfo($result, $mode = null)
- {
- if (is_string($result)) {
-
- if (!@mssql_select_db($this->_db, $this->connection)) {
- return $this->mssqlRaiseError(DB_ERROR_NODBSELECTED);
- }
- $id = @mssql_query(
- "SELECT * FROM $result WHERE 1=0",
- $this->connection
- );
- $got_string = true;
- } elseif (isset($result->result)) {
-
- $id = $result->result;
- $got_string = false;
- } else {
-
- $id = $result;
- $got_string = false;
- }
- if (!is_resource($id)) {
- return $this->mssqlRaiseError(DB_ERROR_NEED_MORE_DATA);
- }
- if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) {
- $case_func = 'strtolower';
- } else {
- $case_func = 'strval';
- }
- $count = @mssql_num_fields($id);
- $res = array();
- if ($mode) {
- $res['num_fields'] = $count;
- }
- for ($i = 0; $i < $count; $i++) {
- if ($got_string) {
- $flags = $this->_mssql_field_flags(
- $result,
- @mssql_field_name($id, $i)
- );
- if (DB::isError($flags)) {
- return $flags;
- }
- } else {
- $flags = '';
- }
- $res[$i] = array(
- 'table' => $got_string ? $case_func($result) : '',
- 'name' => $case_func(@mssql_field_name($id, $i)),
- 'type' => @mssql_field_type($id, $i),
- 'len' => @mssql_field_length($id, $i),
- 'flags' => $flags,
- );
- if ($mode & DB_TABLEINFO_ORDER) {
- $res['order'][$res[$i]['name']] = $i;
- }
- if ($mode & DB_TABLEINFO_ORDERTABLE) {
- $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
- }
- }
-
- if ($got_string) {
- @mssql_free_result($id);
- }
- return $res;
- }
-
-
-
- public function _mssql_field_flags($table, $column)
- {
- static $tableName = null;
- static $flags = array();
- if ($table != $tableName) {
- $flags = array();
- $tableName = $table;
-
- $res = $this->getAll("EXEC SP_HELPINDEX $table", DB_FETCHMODE_ASSOC);
- if (DB::isError($res)) {
- return $res;
- }
- foreach ($res as $val) {
- $keys = explode(', ', $val['index_keys']);
- if (sizeof($keys) > 1) {
- foreach ($keys as $key) {
- $this->_add_flag($flags[$key], 'multiple_key');
- }
- }
- if (strpos($val['index_description'], 'primary key')) {
- foreach ($keys as $key) {
- $this->_add_flag($flags[$key], 'primary_key');
- }
- } elseif (strpos($val['index_description'], 'unique')) {
- foreach ($keys as $key) {
- $this->_add_flag($flags[$key], 'unique_key');
- }
- }
- }
-
- $res = $this->getAll("EXEC SP_COLUMNS $table", DB_FETCHMODE_ASSOC);
- if (DB::isError($res)) {
- return $res;
- }
- foreach ($res as $val) {
- $val = array_change_key_case($val, CASE_LOWER);
- if ($val['nullable'] == '0') {
- $this->_add_flag($flags[$val['column_name']], 'not_null');
- }
- if (strpos($val['type_name'], 'identity')) {
- $this->_add_flag($flags[$val['column_name']], 'auto_increment');
- }
- if (strpos($val['type_name'], 'timestamp')) {
- $this->_add_flag($flags[$val['column_name']], 'timestamp');
- }
- }
- }
- if (array_key_exists($column, $flags)) {
- return (implode(' ', $flags[$column]));
- }
- return '';
- }
-
-
-
- public function _add_flag(&$array, $value)
- {
- if (!is_array($array)) {
- $array = array($value);
- } elseif (!in_array($value, $array)) {
- array_push($array, $value);
- }
- }
-
-
-
- public function getSpecialQuery($type)
- {
- switch ($type) {
- case 'tables':
- return "SELECT name FROM sysobjects WHERE type = 'U'"
- . ' ORDER BY name';
- case 'views':
- return "SELECT name FROM sysobjects WHERE type = 'V'";
- default:
- return null;
- }
- }
-
- }
|