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- <?php
- require_once 'common.php';
- class DB_sybase extends DB_common
- {
-
-
- public $phptype = 'sybase';
-
- public $dbsyntax = 'sybase';
-
- public $features = array(
- 'limit' => 'emulate',
- 'new_link' => false,
- 'numrows' => true,
- 'pconnect' => true,
- 'prepare' => false,
- 'ssl' => false,
- 'transactions' => true,
- );
-
- public $errorcode_map = array();
-
- public $connection;
-
- public $dsn = array();
-
- public $autocommit = true;
-
- public $transaction_opcount = 0;
-
- public $_db = '';
-
-
-
- public function __construct()
- {
- parent::__construct();
- }
-
-
-
- public function connect($dsn, $persistent = false)
- {
- if (!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'];
- }
- $dsn['hostspec'] = $dsn['hostspec'] ? $dsn['hostspec'] : 'localhost';
- $dsn['password'] = !empty($dsn['password']) ? $dsn['password'] : false;
- $dsn['charset'] = isset($dsn['charset']) ? $dsn['charset'] : false;
- $dsn['appname'] = isset($dsn['appname']) ? $dsn['appname'] : false;
- $connect_function = $persistent ? 'sybase_pconnect' : 'sybase_connect';
- if ($dsn['username']) {
- $this->connection = @$connect_function(
- $dsn['hostspec'],
- $dsn['username'],
- $dsn['password'],
- $dsn['charset'],
- $dsn['appname']
- );
- } else {
- return $this->raiseError(
- DB_ERROR_CONNECT_FAILED,
- null,
- null,
- null,
- 'The DSN did not contain a username.'
- );
- }
- if (!$this->connection) {
- return $this->raiseError(
- DB_ERROR_CONNECT_FAILED,
- null,
- null,
- null,
- @sybase_get_last_message()
- );
- }
- if ($dsn['database']) {
- if (!@sybase_select_db($dsn['database'], $this->connection)) {
- return $this->raiseError(
- DB_ERROR_NODBSELECTED,
- null,
- null,
- null,
- @sybase_get_last_message()
- );
- }
- $this->_db = $dsn['database'];
- }
- return DB_OK;
- }
-
-
-
- public function disconnect()
- {
- $ret = @sybase_close($this->connection);
- $this->connection = null;
- return $ret;
- }
-
-
-
- public function simpleQuery($query)
- {
- $ismanip = $this->_checkManip($query);
- $this->last_query = $query;
- if ($this->_db && !@sybase_select_db($this->_db, $this->connection)) {
- return $this->sybaseRaiseError(DB_ERROR_NODBSELECTED);
- }
- $query = $this->modifyQuery($query);
- if (!$this->autocommit && $ismanip) {
- if ($this->transaction_opcount == 0) {
- $result = @sybase_query('BEGIN TRANSACTION', $this->connection);
- if (!$result) {
- return $this->sybaseRaiseError();
- }
- }
- $this->transaction_opcount++;
- }
- $result = @sybase_query($query, $this->connection);
- if (!$result) {
- return $this->sybaseRaiseError();
- }
- if (is_resource($result)) {
- return $result;
- }
-
-
- return $ismanip ? DB_OK : $result;
- }
-
-
-
- public function sybaseRaiseError($errno = null)
- {
- $native = $this->errorNative();
- if ($errno === null) {
- $errno = $this->errorCode($native);
- }
- return $this->raiseError($errno, null, null, null, $native);
- }
-
-
-
- public function errorNative()
- {
- return @sybase_get_last_message();
- }
-
-
-
- public function errorCode($errormsg)
- {
- static $error_regexps;
-
-
- $errormsg = preg_replace('/^sybase[a-z_]+\(\): /', '', $errormsg);
- if (!isset($error_regexps)) {
- $error_regexps = array(
- '/Incorrect syntax near/'
- => DB_ERROR_SYNTAX,
- '/^Unclosed quote before the character string [\"\'].*[\"\']\./'
- => DB_ERROR_SYNTAX,
- '/Implicit conversion (from datatype|of NUMERIC value)/i'
- => DB_ERROR_INVALID_NUMBER,
- '/Cannot drop the table [\"\'].+[\"\'], because it doesn\'t exist in the system catalogs\./'
- => DB_ERROR_NOSUCHTABLE,
- '/Only the owner of object [\"\'].+[\"\'] or a user with System Administrator \(SA\) role can run this command\./'
- => DB_ERROR_ACCESS_VIOLATION,
- '/^.+ permission denied on object .+, database .+, owner .+/'
- => DB_ERROR_ACCESS_VIOLATION,
- '/^.* permission denied, database .+, owner .+/'
- => DB_ERROR_ACCESS_VIOLATION,
- '/[^.*] not found\./'
- => DB_ERROR_NOSUCHTABLE,
- '/There is already an object named/'
- => DB_ERROR_ALREADY_EXISTS,
- '/Invalid column name/'
- => DB_ERROR_NOSUCHFIELD,
- '/does not allow null values/'
- => DB_ERROR_CONSTRAINT_NOT_NULL,
- '/Command has been aborted/'
- => DB_ERROR_CONSTRAINT,
- '/^Cannot drop the index .* because it doesn\'t exist/i'
- => DB_ERROR_NOT_FOUND,
- '/^There is already an index/i'
- => DB_ERROR_ALREADY_EXISTS,
- '/^There are fewer columns in the INSERT statement than values specified/i'
- => DB_ERROR_VALUE_COUNT_ON_ROW,
- '/Divide by zero/i'
- => DB_ERROR_DIVZERO,
- );
- }
- foreach ($error_regexps as $regexp => $code) {
- if (preg_match($regexp, $errormsg)) {
- return $code;
- }
- }
- return DB_ERROR;
- }
-
-
-
- public function nextResult($result)
- {
- return false;
- }
-
-
-
- public function fetchInto($result, &$arr, $fetchmode, $rownum = null)
- {
- if ($rownum !== null) {
- if (!@sybase_data_seek($result, $rownum)) {
- return null;
- }
- }
- if ($fetchmode & DB_FETCHMODE_ASSOC) {
- if (function_exists('sybase_fetch_assoc')) {
- $arr = @sybase_fetch_assoc($result);
- } else {
- if ($arr = @sybase_fetch_array($result)) {
- foreach ($arr as $key => $value) {
- if (is_int($key)) {
- unset($arr[$key]);
- }
- }
- }
- }
- if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) {
- $arr = array_change_key_case($arr, CASE_LOWER);
- }
- } else {
- $arr = @sybase_fetch_row($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) ? sybase_free_result($result) : false;
- }
-
-
-
- public function numCols($result)
- {
- $cols = @sybase_num_fields($result);
- if (!$cols) {
- return $this->sybaseRaiseError();
- }
- return $cols;
- }
-
- public function numRows($result)
- {
- $rows = @sybase_num_rows($result);
- if ($rows === false) {
- return $this->sybaseRaiseError();
- }
- return $rows;
- }
-
-
-
- public function affectedRows()
- {
- if ($this->_last_query_manip) {
- $result = @sybase_affected_rows($this->connection);
- } else {
- $result = 0;
- }
- return $result;
- }
-
-
-
- public function nextId($seq_name, $ondemand = true)
- {
- $seqname = $this->getSequenceName($seq_name);
- if ($this->_db && !@sybase_select_db($this->_db, $this->connection)) {
- return $this->sybaseRaiseError(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 @@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 numeric(10, 0) IDENTITY NOT NULL,'
- . ' vapor int NULL)');
- }
-
-
-
- public function dropSequence($seq_name)
- {
- return $this->query('DROP TABLE ' . $this->getSequenceName($seq_name));
- }
-
-
-
- public function quoteFloat($float)
- {
- return $this->escapeSimple(str_replace(',', '.', strval(floatval($float))));
- }
-
-
-
- public function autoCommit($onoff = false)
- {
-
-
- $this->autocommit = $onoff ? true : false;
- return DB_OK;
- }
-
-
-
- public function commit()
- {
- if ($this->transaction_opcount > 0) {
- if ($this->_db && !@sybase_select_db($this->_db, $this->connection)) {
- return $this->sybaseRaiseError(DB_ERROR_NODBSELECTED);
- }
- $result = @sybase_query('COMMIT', $this->connection);
- $this->transaction_opcount = 0;
- if (!$result) {
- return $this->sybaseRaiseError();
- }
- }
- return DB_OK;
- }
-
-
-
- public function rollback()
- {
- if ($this->transaction_opcount > 0) {
- if ($this->_db && !@sybase_select_db($this->_db, $this->connection)) {
- return $this->sybaseRaiseError(DB_ERROR_NODBSELECTED);
- }
- $result = @sybase_query('ROLLBACK', $this->connection);
- $this->transaction_opcount = 0;
- if (!$result) {
- return $this->sybaseRaiseError();
- }
- }
- return DB_OK;
- }
-
-
-
- public function tableInfo($result, $mode = null)
- {
- if (is_string($result)) {
-
- if ($this->_db && !@sybase_select_db($this->_db, $this->connection)) {
- return $this->sybaseRaiseError(DB_ERROR_NODBSELECTED);
- }
- $id = @sybase_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 $this->sybaseRaiseError(DB_ERROR_NEED_MORE_DATA);
- }
- if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) {
- $case_func = 'strtolower';
- } else {
- $case_func = 'strval';
- }
- $count = @sybase_num_fields($id);
- $res = array();
- if ($mode) {
- $res['num_fields'] = $count;
- }
- for ($i = 0; $i < $count; $i++) {
- $f = @sybase_fetch_field($id, $i);
-
- $res[$i] = array(
- 'table' => $got_string
- ? $case_func($result)
- : $case_func($f->column_source),
- 'name' => $case_func($f->name),
- 'type' => $f->type,
- 'len' => $f->max_length,
- 'flags' => '',
- );
- if ($res[$i]['table']) {
- $res[$i]['flags'] = $this->_sybase_field_flags(
- $res[$i]['table'],
- $res[$i]['name']
- );
- }
- 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) {
- @sybase_free_result($id);
- }
- return $res;
- }
-
-
-
- public function _sybase_field_flags($table, $column)
- {
- static $tableName = null;
- static $flags = array();
- if ($table != $tableName) {
- $flags = array();
- $tableName = $table;
-
- $res = @sybase_query("sp_helpindex $table", $this->connection);
- if ($res === false || $res === true) {
-
- return '';
- }
- while (($val = sybase_fetch_assoc($res)) !== false) {
- if (!isset($val['index_keys'])) {
-
- break;
- }
- $keys = explode(', ', trim($val['index_keys']));
- if (sizeof($keys) > 1) {
- foreach ($keys as $key) {
- $this->_add_flag($flags[$key], 'multiple_key');
- }
- }
- if (strpos($val['index_description'], 'unique')) {
- foreach ($keys as $key) {
- $this->_add_flag($flags[$key], 'unique_key');
- }
- }
- }
- sybase_free_result($res);
- }
- 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;
- }
- }
-
- }
|