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| | |
| | | // +----------------------------------------------------------------------+ |
| | | // | PHP versions 4 and 5 | |
| | | // +----------------------------------------------------------------------+ |
| | | // | Copyright (c) 1998-2004 Manuel Lemos, Tomas V.V.Cox, | |
| | | // | Copyright (c) 1998-2008 Manuel Lemos, Tomas V.V.Cox, | |
| | | // | Stig. S. Bakken, Lukas Smith | |
| | | // | All rights reserved. | |
| | | // +----------------------------------------------------------------------+ |
| | |
| | | // | Author: Paul Cooper <pgc@ucecom.com> | |
| | | // +----------------------------------------------------------------------+ |
| | | // |
| | | // $Id$ |
| | | // $Id: pgsql.php 295587 2010-02-28 17:16:38Z quipo $ |
| | | |
| | | /** |
| | | * MDB2 PostGreSQL driver |
| | |
| | | class MDB2_Driver_pgsql extends MDB2_Driver_Common |
| | | { |
| | | // {{{ properties |
| | | var $escape_quotes = "\\"; |
| | | var $string_quoting = array('start' => "'", 'end' => "'", 'escape' => "'", 'escape_pattern' => '\\'); |
| | | |
| | | var $identifier_quoting = array('start' => '"', 'end' => '"', 'escape' => '"'); |
| | | // }}} |
| | | // {{{ constructor |
| | | |
| | | /** |
| | | * Constructor |
| | | */ |
| | | * Constructor |
| | | */ |
| | | function __construct() |
| | | { |
| | | parent::__construct(); |
| | |
| | | $this->supported['summary_functions'] = true; |
| | | $this->supported['order_by_text'] = true; |
| | | $this->supported['transactions'] = true; |
| | | $this->supported['savepoints'] = true; |
| | | $this->supported['current_id'] = true; |
| | | $this->supported['limit_queries'] = true; |
| | | $this->supported['LOBs'] = true; |
| | | $this->supported['replace'] = 'emulated'; |
| | | $this->supported['sub_selects'] = true; |
| | | $this->supported['triggers'] = true; |
| | | $this->supported['auto_increment'] = 'emulated'; |
| | | $this->supported['primary_key'] = true; |
| | | $this->supported['result_introspection'] = true; |
| | | $this->supported['prepared_statements'] = true; |
| | | $this->supported['identifier_quoting'] = true; |
| | | $this->supported['pattern_escaping'] = true; |
| | | $this->supported['new_link'] = true; |
| | | |
| | | $this->options['DBA_username'] = false; |
| | | $this->options['DBA_password'] = false; |
| | | $this->options['multi_query'] = false; |
| | | $this->options['disable_smart_seqname'] = true; |
| | | $this->options['max_identifiers_length'] = 63; |
| | | } |
| | | |
| | | // }}} |
| | |
| | | $native_msg = 'Database connection has been lost.'; |
| | | $error_code = MDB2_ERROR_CONNECT_FAILED; |
| | | } |
| | | } else { |
| | | $native_msg = @pg_last_error(); |
| | | } |
| | | |
| | | static $error_regexps; |
| | |
| | | => MDB2_ERROR_NOSUCHFIELD, |
| | | '/(relation|sequence|table).*does not exist|class .* not found/i' |
| | | => MDB2_ERROR_NOSUCHTABLE, |
| | | '/database .* does not exist/' |
| | | => MDB2_ERROR_NOT_FOUND, |
| | | '/constraint .* does not exist/' |
| | | => MDB2_ERROR_NOT_FOUND, |
| | | '/index .* does not exist/' |
| | | => MDB2_ERROR_NOT_FOUND, |
| | | '/database .* already exists/i' |
| | | => MDB2_ERROR_ALREADY_EXISTS, |
| | | '/relation .* already exists/i' |
| | | => MDB2_ERROR_ALREADY_EXISTS, |
| | | '/(divide|division) by zero$/i' |
| | |
| | | => MDB2_ERROR_VALUE_COUNT_ON_ROW, |
| | | ); |
| | | } |
| | | foreach ($error_regexps as $regexp => $code) { |
| | | if (preg_match($regexp, $native_msg)) { |
| | | $error_code = $code; |
| | | break; |
| | | if (is_numeric($error) && $error < 0) { |
| | | $error_code = $error; |
| | | } else { |
| | | foreach ($error_regexps as $regexp => $code) { |
| | | if (preg_match($regexp, $native_msg)) { |
| | | $error_code = $code; |
| | | break; |
| | | } |
| | | } |
| | | } |
| | | |
| | | return array($error_code, null, $native_msg); |
| | | } |
| | | |
| | | // }}} |
| | | // {{{ escape() |
| | | |
| | | /** |
| | | * Quotes a string so it can be safely used in a query. It will quote |
| | | * the text so it can safely be used within a query. |
| | | * |
| | | * @param string the input string to quote |
| | | * @param bool escape wildcards |
| | | * |
| | | * @return string quoted string |
| | | * |
| | | * @access public |
| | | */ |
| | | function escape($text, $escape_wildcards = false) |
| | | { |
| | | if ($escape_wildcards) { |
| | | $text = $this->escapePattern($text); |
| | | } |
| | | $connection = $this->getConnection(); |
| | | if (PEAR::isError($connection)) { |
| | | return $connection; |
| | | } |
| | | if (is_resource($connection) && version_compare(PHP_VERSION, '5.2.0RC5', '>=')) { |
| | | $text = @pg_escape_string($connection, $text); |
| | | } else { |
| | | $text = @pg_escape_string($text); |
| | | } |
| | | return $text; |
| | | } |
| | | |
| | | // }}} |
| | | // {{{ beginTransaction() |
| | | |
| | | /** |
| | | * Start a transaction. |
| | | * Start a transaction or set a savepoint. |
| | | * |
| | | * @return mixed MDB2_OK on success, a MDB2 error on failure |
| | | * @access public |
| | | * @param string name of a savepoint to set |
| | | * @return mixed MDB2_OK on success, a MDB2 error on failure |
| | | * |
| | | * @access public |
| | | */ |
| | | function beginTransaction() |
| | | function beginTransaction($savepoint = null) |
| | | { |
| | | $this->debug('starting transaction', 'beginTransaction'); |
| | | $this->debug('Starting transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint)); |
| | | if (null !== $savepoint) { |
| | | if (!$this->in_transaction) { |
| | | return $this->raiseError(MDB2_ERROR_INVALID, null, null, |
| | | 'savepoint cannot be released when changes are auto committed', __FUNCTION__); |
| | | } |
| | | $query = 'SAVEPOINT '.$savepoint; |
| | | return $this->_doQuery($query, true); |
| | | } |
| | | if ($this->in_transaction) { |
| | | return MDB2_OK; //nothing to do |
| | | } |
| | |
| | | |
| | | /** |
| | | * Commit the database changes done during a transaction that is in |
| | | * progress. |
| | | * progress or release a savepoint. This function may only be called when |
| | | * auto-committing is disabled, otherwise it will fail. Therefore, a new |
| | | * transaction is implicitly started after committing the pending changes. |
| | | * |
| | | * @return mixed MDB2_OK on success, a MDB2 error on failure |
| | | * @access public |
| | | * @param string name of a savepoint to release |
| | | * @return mixed MDB2_OK on success, a MDB2 error on failure |
| | | * |
| | | * @access public |
| | | */ |
| | | function commit() |
| | | function commit($savepoint = null) |
| | | { |
| | | $this->debug('commit transaction', 'commit'); |
| | | $this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint)); |
| | | if (!$this->in_transaction) { |
| | | return $this->raiseError(MDB2_ERROR, null, null, |
| | | 'commit: transaction changes are being auto committed'); |
| | | return $this->raiseError(MDB2_ERROR_INVALID, null, null, |
| | | 'commit/release savepoint cannot be done changes are auto committed', __FUNCTION__); |
| | | } |
| | | if (null !== $savepoint) { |
| | | $query = 'RELEASE SAVEPOINT '.$savepoint; |
| | | return $this->_doQuery($query, true); |
| | | } |
| | | |
| | | $result = $this->_doQuery('COMMIT', true); |
| | | if (PEAR::isError($result)) { |
| | | return $result; |
| | |
| | | // {{{ rollback() |
| | | |
| | | /** |
| | | * Cancel any database changes done during a transaction that is in |
| | | * progress. |
| | | * Cancel any database changes done during a transaction or since a specific |
| | | * savepoint that is in progress. This function may only be called when |
| | | * auto-committing is disabled, otherwise it will fail. Therefore, a new |
| | | * transaction is implicitly started after canceling the pending changes. |
| | | * |
| | | * @return mixed MDB2_OK on success, a MDB2 error on failure |
| | | * @access public |
| | | * @param string name of a savepoint to rollback to |
| | | * @return mixed MDB2_OK on success, a MDB2 error on failure |
| | | * |
| | | * @access public |
| | | */ |
| | | function rollback() |
| | | function rollback($savepoint = null) |
| | | { |
| | | $this->debug('rolling back transaction', 'rollback'); |
| | | $this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint)); |
| | | if (!$this->in_transaction) { |
| | | return $this->raiseError(MDB2_ERROR, null, null, |
| | | 'rollback: transactions can not be rolled back when changes are auto committed'); |
| | | return $this->raiseError(MDB2_ERROR_INVALID, null, null, |
| | | 'rollback cannot be done changes are auto committed', __FUNCTION__); |
| | | } |
| | | $result = $this->_doQuery('ROLLBACK', true); |
| | | if (null !== $savepoint) { |
| | | $query = 'ROLLBACK TO SAVEPOINT '.$savepoint; |
| | | return $this->_doQuery($query, true); |
| | | } |
| | | |
| | | $query = 'ROLLBACK'; |
| | | $result = $this->_doQuery($query, true); |
| | | if (PEAR::isError($result)) { |
| | | return $result; |
| | | } |
| | |
| | | } |
| | | |
| | | // }}} |
| | | // {{{ function setTransactionIsolation() |
| | | |
| | | /** |
| | | * Set the transacton isolation level. |
| | | * |
| | | * @param string standard isolation level |
| | | * READ UNCOMMITTED (allows dirty reads) |
| | | * READ COMMITTED (prevents dirty reads) |
| | | * REPEATABLE READ (prevents nonrepeatable reads) |
| | | * SERIALIZABLE (prevents phantom reads) |
| | | * @param array some transaction options: |
| | | * 'wait' => 'WAIT' | 'NO WAIT' |
| | | * 'rw' => 'READ WRITE' | 'READ ONLY' |
| | | * |
| | | * @return mixed MDB2_OK on success, a MDB2 error on failure |
| | | * |
| | | * @access public |
| | | * @since 2.1.1 |
| | | */ |
| | | function setTransactionIsolation($isolation, $options = array()) |
| | | { |
| | | $this->debug('Setting transaction isolation level', __FUNCTION__, array('is_manip' => true)); |
| | | switch ($isolation) { |
| | | case 'READ UNCOMMITTED': |
| | | case 'READ COMMITTED': |
| | | case 'REPEATABLE READ': |
| | | case 'SERIALIZABLE': |
| | | break; |
| | | default: |
| | | return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, |
| | | 'isolation level is not supported: '.$isolation, __FUNCTION__); |
| | | } |
| | | |
| | | $query = "SET SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL $isolation"; |
| | | return $this->_doQuery($query, true); |
| | | } |
| | | |
| | | // }}} |
| | | // {{{ _doConnect() |
| | | |
| | | /** |
| | | * Does the grunt work of connecting to the database |
| | | * Do the grunt work of connecting to the database |
| | | * |
| | | * @return mixed connection resource on success, MDB2 Error Object on failure |
| | | * @access protected |
| | | **/ |
| | | function _doConnect($database_name, $persistent = false) |
| | | */ |
| | | function _doConnect($username, $password, $database_name, $persistent = false) |
| | | { |
| | | if (!PEAR::loadExtension($this->phptype)) { |
| | | return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null, |
| | | 'extension '.$this->phptype.' is not compiled into PHP', __FUNCTION__); |
| | | } |
| | | |
| | | if ($database_name == '') { |
| | | $database_name = 'template1'; |
| | | } |
| | |
| | | if ($database_name) { |
| | | $params[0].= ' dbname=\'' . addslashes($database_name) . '\''; |
| | | } |
| | | if ($this->dsn['username']) { |
| | | $params[0].= ' user=\'' . addslashes($this->dsn['username']) . '\''; |
| | | if ($username) { |
| | | $params[0].= ' user=\'' . addslashes($username) . '\''; |
| | | } |
| | | if ($this->dsn['password']) { |
| | | $params[0].= ' password=\'' . addslashes($this->dsn['password']) . '\''; |
| | | if ($password) { |
| | | $params[0].= ' password=\'' . addslashes($password) . '\''; |
| | | } |
| | | if (!empty($this->dsn['options'])) { |
| | | $params[0].= ' options=' . $this->dsn['options']; |
| | |
| | | $params[0].= ' service=' . $this->dsn['service']; |
| | | } |
| | | |
| | | if (isset($this->dsn['new_link']) |
| | | && ($this->dsn['new_link'] == 'true' || $this->dsn['new_link'] === true)) |
| | | { |
| | | if ($this->_isNewLinkSet()) { |
| | | if (version_compare(phpversion(), '4.3.0', '>=')) { |
| | | $params[] = PGSQL_CONNECT_FORCE_NEW; |
| | | } |
| | | } |
| | | |
| | | $connect_function = $persistent ? 'pg_pconnect' : 'pg_connect'; |
| | | |
| | | putenv('PGDATESTYLE=ISO'); |
| | | |
| | | @ini_set('track_errors', true); |
| | | $php_errormsg = ''; |
| | | $connection = @call_user_func_array($connect_function, $params); |
| | | @ini_restore('track_errors'); |
| | | if (!$connection) { |
| | | return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, |
| | | null, null, strip_tags($php_errormsg)); |
| | | return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null, |
| | | 'unable to establish a connection', __FUNCTION__); |
| | | } |
| | | |
| | | if (empty($this->dsn['disable_iso_date'])) { |
| | | if (!@pg_query($connection, "SET SESSION DATESTYLE = 'ISO'")) { |
| | | return $this->raiseError(null, null, null, |
| | | 'Unable to set date style to iso', __FUNCTION__); |
| | | } |
| | | } |
| | | |
| | | if (!empty($this->dsn['charset'])) { |
| | | $result = $this->setCharset($this->dsn['charset'], $connection); |
| | | if (PEAR::isError($result)) { |
| | | return $result; |
| | | } |
| | | } |
| | | |
| | | // Enable extra compatibility settings on 8.2 and later |
| | | if (function_exists('pg_parameter_status')) { |
| | | $version = pg_parameter_status($connection, 'server_version'); |
| | | if ($version == false) { |
| | | return $this->raiseError(null, null, null, |
| | | 'Unable to retrieve server version', __FUNCTION__); |
| | | } |
| | | $version = explode ('.', $version); |
| | | if ( $version['0'] > 8 |
| | | || ($version['0'] == 8 && $version['1'] >= 2) |
| | | ) { |
| | | if (!@pg_query($connection, "SET SESSION STANDARD_CONFORMING_STRINGS = OFF")) { |
| | | return $this->raiseError(null, null, null, |
| | | 'Unable to set standard_conforming_strings to off', __FUNCTION__); |
| | | } |
| | | |
| | | if (!@pg_query($connection, "SET SESSION ESCAPE_STRING_WARNING = OFF")) { |
| | | return $this->raiseError(null, null, null, |
| | | 'Unable to set escape_string_warning to off', __FUNCTION__); |
| | | } |
| | | } |
| | | } |
| | | |
| | | return $connection; |
| | | } |
| | | |
| | |
| | | * |
| | | * @return true on success, MDB2 Error Object on failure |
| | | * @access public |
| | | **/ |
| | | */ |
| | | function connect() |
| | | { |
| | | if (is_resource($this->connection)) { |
| | | if (count(array_diff($this->connected_dsn, $this->dsn)) == 0 |
| | | //if (count(array_diff($this->connected_dsn, $this->dsn)) == 0 |
| | | if (MDB2::areEquals($this->connected_dsn, $this->dsn) |
| | | && $this->connected_database_name == $this->database_name |
| | | && ($this->opened_persistent == $this->options['persistent']) |
| | | ) { |
| | |
| | | $this->disconnect(false); |
| | | } |
| | | |
| | | if (!PEAR::loadExtension($this->phptype)) { |
| | | return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null, |
| | | 'connect: extension '.$this->phptype.' is not compiled into PHP'); |
| | | } |
| | | |
| | | if ($this->database_name) { |
| | | $connection = $this->_doConnect($this->database_name, $this->options['persistent']); |
| | | $connection = $this->_doConnect($this->dsn['username'], |
| | | $this->dsn['password'], |
| | | $this->database_name, |
| | | $this->options['persistent']); |
| | | if (PEAR::isError($connection)) { |
| | | return $connection; |
| | | } |
| | | |
| | | $this->connection = $connection; |
| | | $this->connected_dsn = $this->dsn; |
| | | $this->connected_database_name = $this->database_name; |
| | | $this->opened_persistent = $this->options['persistent']; |
| | | $this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype; |
| | | } |
| | | |
| | | return MDB2_OK; |
| | | } |
| | | |
| | | // }}} |
| | | // {{{ setCharset() |
| | | |
| | | /** |
| | | * Set the charset on the current connection |
| | | * |
| | | * @param string charset |
| | | * @param resource connection handle |
| | | * |
| | | * @return true on success, MDB2 Error Object on failure |
| | | */ |
| | | function setCharset($charset, $connection = null) |
| | | { |
| | | if (null === $connection) { |
| | | $connection = $this->getConnection(); |
| | | if (PEAR::isError($connection)) { |
| | | return $connection; |
| | | } |
| | | } |
| | | if (is_array($charset)) { |
| | | $charset = array_shift($charset); |
| | | $this->warnings[] = 'postgresql does not support setting client collation'; |
| | | } |
| | | $result = @pg_set_client_encoding($connection, $charset); |
| | | if ($result == -1) { |
| | | return $this->raiseError(null, null, null, |
| | | 'Unable to set client charset: '.$charset, __FUNCTION__); |
| | | } |
| | | return MDB2_OK; |
| | | } |
| | | |
| | | // }}} |
| | | // {{{ databaseExists() |
| | | |
| | | /** |
| | | * check if given database name is exists? |
| | | * |
| | | * @param string $name name of the database that should be checked |
| | | * |
| | | * @return mixed true/false on success, a MDB2 error on failure |
| | | * @access public |
| | | */ |
| | | function databaseExists($name) |
| | | { |
| | | $res = $this->_doConnect($this->dsn['username'], |
| | | $this->dsn['password'], |
| | | $this->escape($name), |
| | | $this->options['persistent']); |
| | | if (!PEAR::isError($res)) { |
| | | return true; |
| | | } |
| | | |
| | | return false; |
| | | } |
| | | |
| | | // }}} |
| | |
| | | /** |
| | | * Log out and disconnect from the database. |
| | | * |
| | | * @param boolean $force if the disconnect should be forced even if the |
| | | * connection is opened persistently |
| | | * @return mixed true on success, false if not connected and error |
| | | * object on error |
| | | * @access public |
| | |
| | | function disconnect($force = true) |
| | | { |
| | | if (is_resource($this->connection)) { |
| | | if (!$this->opened_persistent || $force) { |
| | | @pg_close($this->connection); |
| | | if ($this->in_transaction) { |
| | | $dsn = $this->dsn; |
| | | $database_name = $this->database_name; |
| | | $persistent = $this->options['persistent']; |
| | | $this->dsn = $this->connected_dsn; |
| | | $this->database_name = $this->connected_database_name; |
| | | $this->options['persistent'] = $this->opened_persistent; |
| | | $this->rollback(); |
| | | $this->dsn = $dsn; |
| | | $this->database_name = $database_name; |
| | | $this->options['persistent'] = $persistent; |
| | | } |
| | | $this->connection = 0; |
| | | |
| | | if (!$this->opened_persistent || $force) { |
| | | $ok = @pg_close($this->connection); |
| | | if (!$ok) { |
| | | return $this->raiseError(MDB2_ERROR_DISCONNECT_FAILED, |
| | | null, null, null, __FUNCTION__); |
| | | } |
| | | } |
| | | } else { |
| | | return false; |
| | | } |
| | | return MDB2_OK; |
| | | return parent::disconnect($force); |
| | | } |
| | | |
| | | // }}} |
| | | // {{{ 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 |
| | | * @param boolean $is_manip if the query is a manipulation query |
| | | * @return mixed MDB2_OK on success, a MDB2 error on failure |
| | | * @access public |
| | | */ |
| | | function &standaloneQuery($query, $types = null) |
| | | function standaloneQuery($query, $types = null, $is_manip = false) |
| | | { |
| | | $connection = $this->_doConnect('template1', false); |
| | | $user = $this->options['DBA_username']? $this->options['DBA_username'] : $this->dsn['username']; |
| | | $pass = $this->options['DBA_password']? $this->options['DBA_password'] : $this->dsn['password']; |
| | | $connection = $this->_doConnect($user, $pass, $this->database_name, $this->options['persistent']); |
| | | if (PEAR::isError($connection)) { |
| | | $err =& $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null, |
| | | 'Cannot connect to template1'); |
| | | return $err; |
| | | 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); |
| | | $offset = $this->offset; |
| | | $limit = $this->limit; |
| | | $this->offset = $this->limit = 0; |
| | | $query = $this->_modifyQuery($query, $is_manip, $limit, $offset); |
| | | |
| | | $result = $this->_doQuery($query, $isManip, $connection, false); |
| | | $result = $this->_doQuery($query, $is_manip, $connection, $this->database_name); |
| | | if (!PEAR::isError($result)) { |
| | | if ($is_manip) { |
| | | $result = $this->_affectedRows($connection, $result); |
| | | } else { |
| | | $result =& $this->_wrapResult($result, $types, true, false, $limit, $offset); |
| | | } |
| | | } |
| | | |
| | | @pg_close($connection); |
| | | if (PEAR::isError($result)) { |
| | | return $result; |
| | | } |
| | | |
| | | if ($isManip) { |
| | | return $result; |
| | | } |
| | | |
| | | $result =& $this->_wrapResult($result, $types, true, false, $limit, $offset); |
| | | return $result; |
| | | } |
| | | |
| | |
| | | /** |
| | | * Execute a query |
| | | * @param string $query query |
| | | * @param boolean $isManip if the query is a manipulation query |
| | | * @param boolean $is_manip 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, $database_name = null) |
| | | function _doQuery($query, $is_manip = false, $connection = null, $database_name = null) |
| | | { |
| | | $this->last_query = $query; |
| | | $this->debug($query, 'query'); |
| | | if ($this->options['disable_query']) { |
| | | if ($isManip) { |
| | | return 0; |
| | | $result = $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'pre')); |
| | | if ($result) { |
| | | if (PEAR::isError($result)) { |
| | | return $result; |
| | | } |
| | | return null; |
| | | $query = $result; |
| | | } |
| | | if ($this->options['disable_query']) { |
| | | $result = $is_manip ? 0 : null; |
| | | return $result; |
| | | } |
| | | |
| | | if (is_null($connection)) { |
| | | $err = $this->connect(); |
| | | if (PEAR::isError($err)) { |
| | | if (null === $connection) { |
| | | $connection = $this->getConnection(); |
| | | if (PEAR::isError($connection)) { |
| | | return $connection; |
| | | } |
| | | } |
| | | |
| | | $function = $this->options['multi_query'] ? 'pg_send_query' : 'pg_query'; |
| | | $result = @$function($connection, $query); |
| | | if (!$result) { |
| | | $err = $this->raiseError(null, null, null, |
| | | 'Could not execute statement', __FUNCTION__); |
| | | return $err; |
| | | } elseif ($this->options['multi_query']) { |
| | | if (!($result = @pg_get_result($connection))) { |
| | | $err = $this->raiseError(null, null, null, |
| | | 'Could not get the first result from a multi query', __FUNCTION__); |
| | | return $err; |
| | | } |
| | | $connection = $this->connection; |
| | | } |
| | | |
| | | $result = @pg_query($connection, $query); |
| | | if (!$result) { |
| | | return $this->raiseError(); |
| | | } |
| | | |
| | | if ($isManip) { |
| | | return @pg_affected_rows($result); |
| | | } elseif (!preg_match('/^\s*\(*\s*(SELECT|EXPLAIN|FETCH|SHOW)\s/si', $query)) { |
| | | return 0; |
| | | } |
| | | $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'post', 'result' => $result)); |
| | | return $result; |
| | | } |
| | | |
| | | // }}} |
| | | // {{{ _affectedRows() |
| | | |
| | | /** |
| | | * Returns the number of rows affected |
| | | * |
| | | * @param resource $result |
| | | * @param resource $connection |
| | | * @return mixed MDB2 Error Object or the number of rows affected |
| | | * @access private |
| | | */ |
| | | function _affectedRows($connection, $result = null) |
| | | { |
| | | if (null === $connection) { |
| | | $connection = $this->getConnection(); |
| | | if (PEAR::isError($connection)) { |
| | | return $connection; |
| | | } |
| | | } |
| | | return @pg_affected_rows($result); |
| | | } |
| | | |
| | | // }}} |
| | |
| | | * Changes a query string for various DBMS specific reasons |
| | | * |
| | | * @param string $query query to modify |
| | | * @return the new (modified) query |
| | | * @param boolean $is_manip if it is a DML query |
| | | * @param integer $limit limit the number of rows |
| | | * @param integer $offset start reading from given offset |
| | | * @return string modified query |
| | | * @access protected |
| | | */ |
| | | function _modifyQuery($query, $isManip, $limit, $offset) |
| | | function _modifyQuery($query, $is_manip, $limit, $offset) |
| | | { |
| | | if ($limit > 0 |
| | | && !preg_match('/LIMIT\s*\d(\s*(,|OFFSET)\s*\d+)?/i', $query) |
| | | && !preg_match('/LIMIT\s*\d(?:\s*(?:,|OFFSET)\s*\d+)?(?:[^\)]*)?$/i', $query) |
| | | ) { |
| | | $query = rtrim($query); |
| | | if (substr($query, -1) == ';') { |
| | | $query = substr($query, 0, -1); |
| | | } |
| | | if ($isManip) { |
| | | $manip = preg_replace('/^(DELETE FROM|UPDATE).*$/', '\\1', $query); |
| | | $from = $match[2]; |
| | | $where = $match[3]; |
| | | $query = $manip.' '.$from.' WHERE ctid=(SELECT ctid FROM '.$from.' '.$where.' LIMIT '.$limit.')'; |
| | | if ($is_manip) { |
| | | $query = $this->_modifyManipQuery($query, $limit); |
| | | } else { |
| | | $query.= " LIMIT $limit OFFSET $offset"; |
| | | } |
| | | } |
| | | return $query; |
| | | } |
| | | |
| | | // }}} |
| | | // {{{ _modifyManipQuery() |
| | | |
| | | /** |
| | | * Changes a manip query string for various DBMS specific reasons |
| | | * |
| | | * @param string $query query to modify |
| | | * @param integer $limit limit the number of rows |
| | | * @return string modified query |
| | | * @access protected |
| | | */ |
| | | function _modifyManipQuery($query, $limit) |
| | | { |
| | | $pos = strpos(strtolower($query), 'where'); |
| | | $where = $pos ? substr($query, $pos) : ''; |
| | | |
| | | $manip_clause = '(\bDELETE\b\s+(?:\*\s+)?\bFROM\b|\bUPDATE\b)'; |
| | | $from_clause = '([\w\.]+)'; |
| | | $where_clause = '(?:(.*)\bWHERE\b\s+(.*))|(.*)'; |
| | | $pattern = '/^'. $manip_clause . '\s+' . $from_clause .'(?:\s)*(?:'. $where_clause .')?$/i'; |
| | | $matches = preg_match($pattern, $query, $match); |
| | | if ($matches) { |
| | | $manip = $match[1]; |
| | | $from = $match[2]; |
| | | $what = (count($matches) == 6) ? $match[5] : $match[3]; |
| | | return $manip.' '.$from.' '.$what.' WHERE ctid=(SELECT ctid FROM '.$from.' '.$where.' LIMIT '.$limit.')'; |
| | | } |
| | | //return error? |
| | | 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) |
| | | { |
| | | $query = 'SHOW SERVER_VERSION'; |
| | | if ($this->connected_server_info) { |
| | | $server_info = $this->connected_server_info; |
| | | } else { |
| | | $server_info = $this->queryOne($query, 'text'); |
| | | if (PEAR::isError($server_info)) { |
| | | return $server_info; |
| | | } |
| | | } |
| | | // cache server_info |
| | | $this->connected_server_info = $server_info; |
| | | if (!$native && !PEAR::isError($server_info)) { |
| | | $tmp = explode('.', $server_info, 3); |
| | | if (empty($tmp[2]) |
| | | && isset($tmp[1]) |
| | | && preg_match('/(\d+)(.*)/', $tmp[1], $tmp2) |
| | | ) { |
| | | $server_info = array( |
| | | 'major' => $tmp[0], |
| | | 'minor' => $tmp2[1], |
| | | 'patch' => null, |
| | | 'extra' => $tmp2[2], |
| | | 'native' => $server_info, |
| | | ); |
| | | } else { |
| | | $server_info = array( |
| | | 'major' => isset($tmp[0]) ? $tmp[0] : null, |
| | | 'minor' => isset($tmp[1]) ? $tmp[1] : null, |
| | | 'patch' => isset($tmp[2]) ? $tmp[2] : null, |
| | | 'extra' => null, |
| | | 'native' => $server_info, |
| | | ); |
| | | } |
| | | } |
| | | return $server_info; |
| | | } |
| | | |
| | | // }}} |
| | | // {{{ 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 :name and are placeholders which can be set using |
| | | * bindParam() and the query can be sent off using the execute() method. |
| | | * The allowed format for :name can be set with the 'bindname_format' option. |
| | | * |
| | | * @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 or MDB2_PREPARE_RESULT, if set to |
| | | * MDB2_PREPARE_MANIP the query is handled as a manipulation query |
| | | * @param mixed $lobs key (field) value (parameter) pair for all lob placeholders |
| | | * @return mixed resource handle for the prepared query on success, a MDB2 |
| | | * error on failure |
| | | * @access public |
| | | * @see bindParam, execute |
| | | */ |
| | | function prepare($query, $types = null, $result_types = null, $lobs = array()) |
| | | { |
| | | if ($this->options['emulate_prepared']) { |
| | | return parent::prepare($query, $types, $result_types, $lobs); |
| | | } |
| | | $is_manip = ($result_types === MDB2_PREPARE_MANIP); |
| | | $offset = $this->offset; |
| | | $limit = $this->limit; |
| | | $this->offset = $this->limit = 0; |
| | | $result = $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'pre')); |
| | | if ($result) { |
| | | if (PEAR::isError($result)) { |
| | | return $result; |
| | | } |
| | | $query = $result; |
| | | } |
| | | $pgtypes = function_exists('pg_prepare') ? false : array(); |
| | | if ($pgtypes !== false && !empty($types)) { |
| | | $this->loadModule('Datatype', null, true); |
| | | } |
| | | $query = $this->_modifyQuery($query, $is_manip, $limit, $offset); |
| | | $placeholder_type_guess = $placeholder_type = null; |
| | | $question = '?'; |
| | | $colon = ':'; |
| | | $positions = array(); |
| | | $position = $parameter = 0; |
| | | while ($position < strlen($query)) { |
| | | $q_position = strpos($query, $question, $position); |
| | | $c_position = strpos($query, $colon, $position); |
| | | //skip "::type" cast ("select id::varchar(20) from sometable where name=?") |
| | | $doublecolon_position = strpos($query, '::', $position); |
| | | if ($doublecolon_position !== false && $doublecolon_position == $c_position) { |
| | | $c_position = strpos($query, $colon, $position+2); |
| | | } |
| | | if ($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 (null === $placeholder_type) { |
| | | $placeholder_type_guess = $query[$p_position]; |
| | | } |
| | | |
| | | $new_pos = $this->_skipDelimitedStrings($query, $position, $p_position); |
| | | if (PEAR::isError($new_pos)) { |
| | | return $new_pos; |
| | | } |
| | | if ($new_pos != $position) { |
| | | $position = $new_pos; |
| | | continue; //evaluate again starting from the new position |
| | | } |
| | | |
| | | if ($query[$position] == $placeholder_type_guess) { |
| | | if (null === $placeholder_type) { |
| | | $placeholder_type = $query[$p_position]; |
| | | $question = $colon = $placeholder_type; |
| | | if (!empty($types) && is_array($types)) { |
| | | if ($placeholder_type == ':') { |
| | | } else { |
| | | $types = array_values($types); |
| | | } |
| | | } |
| | | } |
| | | if ($placeholder_type_guess == '?') { |
| | | $length = 1; |
| | | $name = $parameter; |
| | | } else { |
| | | $regexp = '/^.{'.($position+1).'}('.$this->options['bindname_format'].').*$/s'; |
| | | $param = preg_replace($regexp, '\\1', $query); |
| | | if ($param === '') { |
| | | $err = $this->raiseError(MDB2_ERROR_SYNTAX, null, null, |
| | | 'named parameter name must match "bindname_format" option', __FUNCTION__); |
| | | return $err; |
| | | } |
| | | $length = strlen($param) + 1; |
| | | $name = $param; |
| | | } |
| | | if ($pgtypes !== false) { |
| | | if (is_array($types) && array_key_exists($name, $types)) { |
| | | $pgtypes[] = $this->datatype->mapPrepareDatatype($types[$name]); |
| | | } elseif (is_array($types) && array_key_exists($parameter, $types)) { |
| | | $pgtypes[] = $this->datatype->mapPrepareDatatype($types[$parameter]); |
| | | } else { |
| | | $pgtypes[] = 'text'; |
| | | } |
| | | } |
| | | if (($key_parameter = array_search($name, $positions))) { |
| | | $next_parameter = 1; |
| | | foreach ($positions as $key => $value) { |
| | | if ($key_parameter == $key) { |
| | | break; |
| | | } |
| | | ++$next_parameter; |
| | | } |
| | | } else { |
| | | ++$parameter; |
| | | $next_parameter = $parameter; |
| | | $positions[] = $name; |
| | | } |
| | | $query = substr_replace($query, '$'.$parameter, $position, $length); |
| | | $position = $p_position + strlen($parameter); |
| | | } else { |
| | | $position = $p_position; |
| | | } |
| | | } |
| | | $connection = $this->getConnection(); |
| | | if (PEAR::isError($connection)) { |
| | | return $connection; |
| | | } |
| | | static $prep_statement_counter = 1; |
| | | $statement_name = sprintf($this->options['statement_format'], $this->phptype, $prep_statement_counter++ . sha1(microtime() + mt_rand())); |
| | | $statement_name = substr(strtolower($statement_name), 0, $this->options['max_identifiers_length']); |
| | | if (false === $pgtypes) { |
| | | $result = @pg_prepare($connection, $statement_name, $query); |
| | | if (!$result) { |
| | | $err = $this->raiseError(null, null, null, |
| | | 'Unable to create prepared statement handle', __FUNCTION__); |
| | | return $err; |
| | | } |
| | | } else { |
| | | $types_string = ''; |
| | | if ($pgtypes) { |
| | | $types_string = ' ('.implode(', ', $pgtypes).') '; |
| | | } |
| | | $query = 'PREPARE '.$statement_name.$types_string.' AS '.$query; |
| | | $statement = $this->_doQuery($query, true, $connection); |
| | | if (PEAR::isError($statement)) { |
| | | return $statement; |
| | | } |
| | | } |
| | | |
| | | $class_name = 'MDB2_Statement_'.$this->phptype; |
| | | $obj = new $class_name($this, $statement_name, $positions, $query, $types, $result_types, $is_manip, $limit, $offset); |
| | | $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'post', 'result' => $obj)); |
| | | return $obj; |
| | | } |
| | | |
| | | // }}} |
| | | // {{{ function getSequenceName($sqn) |
| | | |
| | | /** |
| | | * adds sequence name formatting to a sequence name |
| | | * |
| | | * @param string name of the sequence |
| | | * |
| | | * @return string formatted sequence name |
| | | * |
| | | * @access public |
| | | */ |
| | | function getSequenceName($sqn) |
| | | { |
| | | if (false === $this->options['disable_smart_seqname']) { |
| | | if (strpos($sqn, '_') !== false) { |
| | | list($table, $field) = explode('_', $sqn, 2); |
| | | } |
| | | $schema_list = $this->queryOne("SELECT array_to_string(current_schemas(false), ',')"); |
| | | if (PEAR::isError($schema_list) || empty($schema_list) || count($schema_list) < 2) { |
| | | $order_by = ' a.attnum'; |
| | | $schema_clause = ' AND n.nspname=current_schema()'; |
| | | } else { |
| | | $schemas = explode(',', $schema_list); |
| | | $schema_clause = ' AND n.nspname IN ('.$schema_list.')'; |
| | | $counter = 1; |
| | | $order_by = ' CASE '; |
| | | foreach ($schemas as $schema) { |
| | | $order_by .= ' WHEN n.nspname='.$schema.' THEN '.$counter++; |
| | | } |
| | | $order_by .= ' ELSE '.$counter.' END, a.attnum'; |
| | | } |
| | | |
| | | $query = "SELECT substring((SELECT substring(pg_get_expr(d.adbin, d.adrelid) for 128) |
| | | FROM pg_attrdef d |
| | | WHERE d.adrelid = a.attrelid |
| | | AND d.adnum = a.attnum |
| | | AND a.atthasdef |
| | | ) FROM 'nextval[^'']*''([^'']*)') |
| | | FROM pg_attribute a |
| | | LEFT JOIN pg_class c ON c.oid = a.attrelid |
| | | LEFT JOIN pg_attrdef d ON d.adrelid = a.attrelid AND d.adnum = a.attnum AND a.atthasdef |
| | | LEFT JOIN pg_namespace n ON c.relnamespace = n.oid |
| | | WHERE (c.relname = ".$this->quote($sqn, 'text'); |
| | | if (!empty($field)) { |
| | | $query .= " OR (c.relname = ".$this->quote($table, 'text')." AND a.attname = ".$this->quote($field, 'text').")"; |
| | | } |
| | | $query .= " )" |
| | | .$schema_clause." |
| | | AND NOT a.attisdropped |
| | | AND a.attnum > 0 |
| | | AND pg_get_expr(d.adbin, d.adrelid) LIKE 'nextval%' |
| | | ORDER BY ".$order_by; |
| | | $seqname = $this->queryOne($query); |
| | | if (!PEAR::isError($seqname) && !empty($seqname) && is_string($seqname)) { |
| | | return $seqname; |
| | | } |
| | | } |
| | | |
| | | return parent::getSequenceName($sqn); |
| | | } |
| | | |
| | | // }}} |
| | | // {{{ nextID() |
| | | |
| | | /** |
| | | * returns the next free id of a sequence |
| | | * Returns the next free id of a sequence |
| | | * |
| | | * @param string $seq_name name of the sequence |
| | | * @param boolean $ondemand when true the seqence is |
| | | * @param boolean $ondemand when true the sequence is |
| | | * automatic created, if it |
| | | * not exists |
| | | * @return mixed MDB2 Error Object or id |
| | |
| | | */ |
| | | function nextID($seq_name, $ondemand = true) |
| | | { |
| | | $sequence_name = $this->getSequenceName($seq_name); |
| | | $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true); |
| | | $query = "SELECT NEXTVAL('$sequence_name')"; |
| | | $this->pushErrorHandling(PEAR_ERROR_RETURN); |
| | | $this->expectError(MDB2_ERROR_NOSUCHTABLE); |
| | | $result = $this->queryOne($query, 'integer'); |
| | | $this->popExpect(); |
| | | $this->popErrorHandling(); |
| | | if (PEAR::isError($result)) { |
| | | if ($ondemand && $result->getCode() == MDB2_ERROR_NOSUCHTABLE) { |
| | | $this->loadModule('Manager'); |
| | | $result = $this->manager->createSequence($seq_name, 1); |
| | | $this->loadModule('Manager', null, true); |
| | | $result = $this->manager->createSequence($seq_name); |
| | | if (PEAR::isError($result)) { |
| | | return $this->raiseError(MDB2_ERROR, null, null, |
| | | 'nextID: on demand sequence could not be created'); |
| | | return $this->raiseError($result, null, null, |
| | | 'on demand sequence could not be created', __FUNCTION__); |
| | | } |
| | | return $this->nextId($seq_name, false); |
| | | } |
| | |
| | | } |
| | | |
| | | // }}} |
| | | // {{{ 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, $field = null) |
| | | { |
| | | if (empty($table) && empty($field)) { |
| | | return $this->queryOne('SELECT lastval()', 'integer'); |
| | | } |
| | | $seq = $table.(empty($field) ? '' : '_'.$field); |
| | | $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq), true); |
| | | return $this->queryOne("SELECT currval('$sequence_name')", 'integer'); |
| | | } |
| | | |
| | | // }}} |
| | | // {{{ currID() |
| | | |
| | | /** |
| | | * returns the current id of a sequence |
| | | * Returns the current id of a sequence |
| | | * |
| | | * @param string $seq_name name of the sequence |
| | | * @return mixed MDB2 Error Object or id |
| | |
| | | */ |
| | | function currID($seq_name) |
| | | { |
| | | $sequence_name = $this->getSequenceName($seq_name); |
| | | $sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true); |
| | | return $this->queryOne("SELECT last_value FROM $sequence_name", 'integer'); |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * MDB2 PostGreSQL result driver |
| | | * |
| | | * @package MDB2 |
| | | * @category Database |
| | | * @author Paul Cooper <pgc@ucecom.com> |
| | | */ |
| | | class MDB2_Result_pgsql extends MDB2_Result_Common |
| | | { |
| | | // }}} |
| | |
| | | * @return int data array on success, a MDB2 error on failure |
| | | * @access public |
| | | */ |
| | | function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null) |
| | | function fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null) |
| | | { |
| | | if (!is_null($rownum)) { |
| | | if (null !== $rownum) { |
| | | $seek = $this->seek($rownum); |
| | | if (PEAR::isError($seek)) { |
| | | return $seek; |
| | |
| | | $row = @pg_fetch_row($this->result); |
| | | } |
| | | if (!$row) { |
| | | if (is_null($this->result)) { |
| | | $err =& $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, |
| | | 'fetchRow: resultset has already been freed'); |
| | | if (false === $this->result) { |
| | | $err = $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, |
| | | 'resultset has already been freed', __FUNCTION__); |
| | | return $err; |
| | | } |
| | | $null = null; |
| | | return $null; |
| | | return null; |
| | | } |
| | | if ($this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL) { |
| | | $this->db->_fixResultArrayValues($row, MDB2_PORTABILITY_EMPTY_TO_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, $mode); |
| | | } |
| | | if (!empty($this->types)) { |
| | | $row = $this->db->datatype->convertResultRow($this->types, $row, $rtrim); |
| | | } |
| | | if (!empty($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); |
| | | $rowObj = new $object_class($row); |
| | | $row = $rowObj; |
| | | } |
| | | } |
| | | ++$this->rownum; |
| | |
| | | /** |
| | | * Retrieve the names of columns returned by the DBMS in a query result. |
| | | * |
| | | * @return mixed an associative array variable |
| | | * that will hold 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. |
| | | * |
| | | * a MDB2 error on failure |
| | | * @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() |
| | |
| | | function numCols() |
| | | { |
| | | $cols = @pg_num_fields($this->result); |
| | | if (is_null($cols)) { |
| | | if (is_null($this->result)) { |
| | | if (null === $cols) { |
| | | if (false === $this->result) { |
| | | return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, |
| | | 'numCols: resultset has already been freed'); |
| | | 'resultset has already been freed', __FUNCTION__); |
| | | } |
| | | return $this->db->raiseError(); |
| | | if (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() |
| | | { |
| | | $connection = $this->db->getConnection(); |
| | | if (PEAR::isError($connection)) { |
| | | return $connection; |
| | | } |
| | | |
| | | if (!($this->result = @pg_get_result($connection))) { |
| | | return false; |
| | | } |
| | | return MDB2_OK; |
| | | } |
| | | |
| | | // }}} |
| | |
| | | */ |
| | | function free() |
| | | { |
| | | $free = @pg_free_result($this->result); |
| | | if (!$free) { |
| | | if (is_null($this->result)) { |
| | | return MDB2_OK; |
| | | if (is_resource($this->result) && $this->db->connection) { |
| | | $free = @pg_free_result($this->result); |
| | | if (false === $free) { |
| | | return $this->db->raiseError(null, null, null, |
| | | 'Could not free result', __FUNCTION__); |
| | | } |
| | | return $this->db->raiseError(); |
| | | } |
| | | $this->result = null; |
| | | $this->result = false; |
| | | return MDB2_OK; |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * MDB2 PostGreSQL buffered result driver |
| | | * |
| | | * @package MDB2 |
| | | * @category Database |
| | | * @author Paul Cooper <pgc@ucecom.com> |
| | | */ |
| | | class MDB2_BufferedResult_pgsql extends MDB2_Result_pgsql |
| | | { |
| | | // {{{ 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 |
| | | */ |
| | | * 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) && !@pg_result_seek($this->result, $rownum)) { |
| | | if (is_null($this->result)) { |
| | | if (false === $this->result) { |
| | | return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, |
| | | 'seek: resultset has already been freed'); |
| | | 'resultset has already been freed', __FUNCTION__); |
| | | } |
| | | if (null === $this->result) { |
| | | return MDB2_OK; |
| | | } |
| | | return $this->db->raiseError(MDB2_ERROR_INVALID, null, null, |
| | | 'seek: tried to seek to an invalid row number ('.$rownum.')'); |
| | | '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 |
| | | */ |
| | | * 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(); |
| | |
| | | // {{{ numRows() |
| | | |
| | | /** |
| | | * returns the number of rows in a result object |
| | | * |
| | | * @return mixed MDB2 Error Object or the number of rows |
| | | * @access public |
| | | */ |
| | | * Returns the number of rows in a result object |
| | | * |
| | | * @return mixed MDB2 Error Object or the number of rows |
| | | * @access public |
| | | */ |
| | | function numRows() |
| | | { |
| | | $rows = @pg_num_rows($this->result); |
| | | if (is_null($rows)) { |
| | | if (is_null($this->result)) { |
| | | if (null === $rows) { |
| | | if (false === $this->result) { |
| | | return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, |
| | | 'numRows: resultset has already been freed'); |
| | | 'resultset has already been freed', __FUNCTION__); |
| | | } |
| | | return $this->raiseError(); |
| | | if (null === $this->result) { |
| | | return 0; |
| | | } |
| | | return $this->db->raiseError(null, null, null, |
| | | 'Could not get row count', __FUNCTION__); |
| | | } |
| | | return $rows; |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * MDB2 PostGreSQL statement driver |
| | | * |
| | | * @package MDB2 |
| | | * @category Database |
| | | * @author Paul Cooper <pgc@ucecom.com> |
| | | */ |
| | | class MDB2_Statement_pgsql 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 $result_wrap_class string which specifies which class to wrap results in |
| | | * |
| | | * @return mixed MDB2_Result or integer (affected rows) on success, |
| | | * a MDB2 error on failure |
| | | * @access private |
| | | */ |
| | | function _execute($result_class = true, $result_wrap_class = false) |
| | | { |
| | | if (null === $this->statement) { |
| | | return parent::_execute($result_class, $result_wrap_class); |
| | | } |
| | | $this->db->last_query = $this->query; |
| | | $this->db->debug($this->query, 'execute', array('is_manip' => $this->is_manip, 'when' => 'pre', 'parameters' => $this->values)); |
| | | if ($this->db->getOption('disable_query')) { |
| | | $result = $this->is_manip ? 0 : null; |
| | | return $result; |
| | | } |
| | | |
| | | $connection = $this->db->getConnection(); |
| | | if (PEAR::isError($connection)) { |
| | | return $connection; |
| | | } |
| | | |
| | | $query = false; |
| | | $parameters = array(); |
| | | // todo: disabled until pg_execute() bytea issues are cleared up |
| | | if (true || !function_exists('pg_execute')) { |
| | | $query = 'EXECUTE '.$this->statement; |
| | | } |
| | | if (!empty($this->positions)) { |
| | | foreach ($this->positions as $parameter) { |
| | | if (!array_key_exists($parameter, $this->values)) { |
| | | return $this->db->raiseError(MDB2_ERROR_NOT_FOUND, null, null, |
| | | 'Unable to bind to missing placeholder: '.$parameter, __FUNCTION__); |
| | | } |
| | | $value = $this->values[$parameter]; |
| | | $type = array_key_exists($parameter, $this->types) ? $this->types[$parameter] : null; |
| | | if (is_resource($value) || $type == 'clob' || $type == 'blob' || $this->db->options['lob_allow_url_include']) { |
| | | if (!is_resource($value) && preg_match('/^(\w+:\/\/)(.*)$/', $value, $match)) { |
| | | if ($match[1] == 'file://') { |
| | | $value = $match[2]; |
| | | } |
| | | $value = @fopen($value, 'r'); |
| | | $close = true; |
| | | } |
| | | if (is_resource($value)) { |
| | | $data = ''; |
| | | while (!@feof($value)) { |
| | | $data.= @fread($value, $this->db->options['lob_buffer_length']); |
| | | } |
| | | if ($close) { |
| | | @fclose($value); |
| | | } |
| | | $value = $data; |
| | | } |
| | | } |
| | | $quoted = $this->db->quote($value, $type, $query); |
| | | if (PEAR::isError($quoted)) { |
| | | return $quoted; |
| | | } |
| | | $parameters[] = $quoted; |
| | | } |
| | | if ($query) { |
| | | $query.= ' ('.implode(', ', $parameters).')'; |
| | | } |
| | | } |
| | | |
| | | if (!$query) { |
| | | $result = @pg_execute($connection, $this->statement, $parameters); |
| | | if (!$result) { |
| | | $err = $this->db->raiseError(null, null, null, |
| | | 'Unable to execute statement', __FUNCTION__); |
| | | return $err; |
| | | } |
| | | } else { |
| | | $result = $this->db->_doQuery($query, $this->is_manip, $connection); |
| | | if (PEAR::isError($result)) { |
| | | return $result; |
| | | } |
| | | } |
| | | |
| | | if ($this->is_manip) { |
| | | $affected_rows = $this->db->_affectedRows($connection, $result); |
| | | return $affected_rows; |
| | | } |
| | | |
| | | $result = $this->db->_wrapResult($result, $this->result_types, |
| | | $result_class, $result_wrap_class, $this->limit, $this->offset); |
| | | $this->db->debug($this->query, 'execute', array('is_manip' => $this->is_manip, 'when' => 'post', 'result' => $result)); |
| | | return $result; |
| | | } |
| | | |
| | | // }}} |
| | | // {{{ 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 (null === $this->positions) { |
| | | return $this->db->raiseError(MDB2_ERROR, null, null, |
| | | 'Prepared statement has already been freed', __FUNCTION__); |
| | | } |
| | | $result = MDB2_OK; |
| | | |
| | | if (null !== $this->statement) { |
| | | $connection = $this->db->getConnection(); |
| | | if (PEAR::isError($connection)) { |
| | | return $connection; |
| | | } |
| | | $query = 'DEALLOCATE PREPARE '.$this->statement; |
| | | $result = $this->db->_doQuery($query, true, $connection); |
| | | } |
| | | |
| | | parent::free(); |
| | | return $result; |
| | | } |
| | | } |
| | | ?> |