diff options
author | alecpl <alec@alec.pl> | 2008-08-26 07:21:50 +0000 |
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committer | alecpl <alec@alec.pl> | 2008-08-26 07:21:50 +0000 |
commit | 9e8e5fa634ace418e6b34280133685485b97a9c0 (patch) | |
tree | 80ae14092bef204fe4689e83d72542af5d152d46 /program/lib/DB/sqlite.php | |
parent | 6ed25604a9f3d4a57b12ad1364af1690f43ec282 (diff) |
- Removed support for PEAR::DB driver
Diffstat (limited to 'program/lib/DB/sqlite.php')
-rw-r--r-- | program/lib/DB/sqlite.php | 959 |
1 files changed, 0 insertions, 959 deletions
diff --git a/program/lib/DB/sqlite.php b/program/lib/DB/sqlite.php deleted file mode 100644 index 63fd68bac..000000000 --- a/program/lib/DB/sqlite.php +++ /dev/null @@ -1,959 +0,0 @@ -<?php - -/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */ - -/** - * The PEAR DB driver for PHP's sqlite extension - * for interacting with SQLite databases - * - * PHP versions 4 and 5 - * - * LICENSE: This source file is subject to version 3.0 of the PHP license - * that is available through the world-wide-web at the following URI: - * http://www.php.net/license/3_0.txt. If you did not receive a copy of - * the PHP License and are unable to obtain it through the web, please - * send a note to license@php.net so we can mail you a copy immediately. - * - * @category Database - * @package DB - * @author Urs Gehrig <urs@circle.ch> - * @author Mika Tuupola <tuupola@appelsiini.net> - * @author Daniel Convissor <danielc@php.net> - * @copyright 1997-2007 The PHP Group - * @license http://www.php.net/license/3_0.txt PHP License 3.0 3.0 - * @version CVS: $Id$ - * @link http://pear.php.net/package/DB - */ - -/** - * Obtain the DB_common class so it can be extended from - */ -require_once 'DB/common.php'; - -/** - * The methods PEAR DB uses to interact with PHP's sqlite extension - * for interacting with SQLite databases - * - * These methods overload the ones declared in DB_common. - * - * NOTICE: This driver needs PHP's track_errors ini setting to be on. - * It is automatically turned on when connecting to the database. - * Make sure your scripts don't turn it off. - * - * @category Database - * @package DB - * @author Urs Gehrig <urs@circle.ch> - * @author Mika Tuupola <tuupola@appelsiini.net> - * @author Daniel Convissor <danielc@php.net> - * @copyright 1997-2007 The PHP Group - * @license http://www.php.net/license/3_0.txt PHP License 3.0 3.0 - * @version Release: 1.7.13 - * @link http://pear.php.net/package/DB - */ -class DB_sqlite extends DB_common -{ - // {{{ properties - - /** - * The DB driver type (mysql, oci8, odbc, etc.) - * @var string - */ - var $phptype = 'sqlite'; - - /** - * The database syntax variant to be used (db2, access, etc.), if any - * @var string - */ - var $dbsyntax = 'sqlite'; - - /** - * The capabilities of this DB implementation - * - * The 'new_link' element contains the PHP version that first provided - * new_link support for this DBMS. Contains false if it's unsupported. - * - * Meaning of the 'limit' element: - * + 'emulate' = emulate with fetch row by number - * + 'alter' = alter the query - * + false = skip rows - * - * @var array - */ - var $features = array( - 'limit' => 'alter', - 'new_link' => false, - 'numrows' => true, - 'pconnect' => true, - 'prepare' => false, - 'ssl' => false, - 'transactions' => false, - ); - - /** - * A mapping of native error codes to DB error codes - * - * {@internal Error codes according to sqlite_exec. See the online - * manual at http://sqlite.org/c_interface.html for info. - * This error handling based on sqlite_exec is not yet implemented.}} - * - * @var array - */ - var $errorcode_map = array( - ); - - /** - * The raw database connection created by PHP - * @var resource - */ - var $connection; - - /** - * The DSN information for connecting to a database - * @var array - */ - var $dsn = array(); - - - /** - * SQLite data types - * - * @link http://www.sqlite.org/datatypes.html - * - * @var array - */ - var $keywords = array ( - 'BLOB' => '', - 'BOOLEAN' => '', - 'CHARACTER' => '', - 'CLOB' => '', - 'FLOAT' => '', - 'INTEGER' => '', - 'KEY' => '', - 'NATIONAL' => '', - 'NUMERIC' => '', - 'NVARCHAR' => '', - 'PRIMARY' => '', - 'TEXT' => '', - 'TIMESTAMP' => '', - 'UNIQUE' => '', - 'VARCHAR' => '', - 'VARYING' => '', - ); - - /** - * The most recent error message from $php_errormsg - * @var string - * @access private - */ - var $_lasterror = ''; - - - // }}} - // {{{ constructor - - /** - * This constructor calls <kbd>$this->DB_common()</kbd> - * - * @return void - */ - function DB_sqlite() - { - $this->DB_common(); - } - - // }}} - // {{{ connect() - - /** - * Connect to the database server, log in and open the database - * - * Don't call this method directly. Use DB::connect() instead. - * - * PEAR DB's sqlite driver supports the following extra DSN options: - * + mode The permissions for the database file, in four digit - * chmod octal format (eg "0600"). - * - * Example of connecting to a database in read-only mode: - * <code> - * require_once 'DB.php'; - * - * $dsn = 'sqlite:///path/and/name/of/db/file?mode=0400'; - * $options = array( - * 'portability' => DB_PORTABILITY_ALL, - * ); - * - * $db = DB::connect($dsn, $options); - * if (PEAR::isError($db)) { - * die($db->getMessage()); - * } - * </code> - * - * @param array $dsn the data source name - * @param bool $persistent should the connection be persistent? - * - * @return int DB_OK on success. A DB_Error object on failure. - */ - function connect($dsn, $persistent = false) - { - if (!PEAR::loadExtension('sqlite')) { - return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND); - } - - $this->dsn = $dsn; - if ($dsn['dbsyntax']) { - $this->dbsyntax = $dsn['dbsyntax']; - } - - if (!$dsn['database']) { - return $this->sqliteRaiseError(DB_ERROR_ACCESS_VIOLATION); - } - - if ($dsn['database'] !== ':memory:') { - if (!file_exists($dsn['database'])) { - if (!touch($dsn['database'])) { - return $this->sqliteRaiseError(DB_ERROR_NOT_FOUND); - } - if (!isset($dsn['mode']) || - !is_numeric($dsn['mode'])) - { - $mode = 0644; - } else { - $mode = octdec($dsn['mode']); - } - if (!chmod($dsn['database'], $mode)) { - return $this->sqliteRaiseError(DB_ERROR_NOT_FOUND); - } - if (!file_exists($dsn['database'])) { - return $this->sqliteRaiseError(DB_ERROR_NOT_FOUND); - } - } - if (!is_file($dsn['database'])) { - return $this->sqliteRaiseError(DB_ERROR_INVALID); - } - if (!is_readable($dsn['database'])) { - return $this->sqliteRaiseError(DB_ERROR_ACCESS_VIOLATION); - } - } - - $connect_function = $persistent ? 'sqlite_popen' : 'sqlite_open'; - - // track_errors must remain on for simpleQuery() - @ini_set('track_errors', 1); - $php_errormsg = ''; - - if (!$this->connection = @$connect_function($dsn['database'])) { - return $this->raiseError(DB_ERROR_NODBSELECTED, - null, null, null, - $php_errormsg); - } - return DB_OK; - } - - // }}} - // {{{ disconnect() - - /** - * Disconnects from the database server - * - * @return bool TRUE on success, FALSE on failure - */ - function disconnect() - { - $ret = @sqlite_close($this->connection); - $this->connection = null; - return $ret; - } - - // }}} - // {{{ simpleQuery() - - /** - * Sends a query to the database server - * - * NOTICE: This method needs PHP's track_errors ini setting to be on. - * It is automatically turned on when connecting to the database. - * Make sure your scripts don't turn it off. - * - * @param string the SQL query string - * - * @return mixed + a PHP result resrouce for successful SELECT queries - * + the DB_OK constant for other successful queries - * + a DB_Error object on failure - */ - function simpleQuery($query) - { - $ismanip = $this->_checkManip($query); - $this->last_query = $query; - $query = $this->modifyQuery($query); - - $php_errormsg = ''; - - $result = @sqlite_query($query, $this->connection); - $this->_lasterror = $php_errormsg ? $php_errormsg : ''; - - $this->result = $result; - if (!$this->result) { - return $this->sqliteRaiseError(null); - } - - // sqlite_query() seems to allways return a resource - // so cant use that. Using $ismanip instead - if (!$ismanip) { - $numRows = $this->numRows($result); - if (is_object($numRows)) { - // we've got PEAR_Error - return $numRows; - } - return $result; - } - return DB_OK; - } - - // }}} - // {{{ nextResult() - - /** - * Move the internal sqlite result pointer to the next available result - * - * @param resource $result the valid sqlite result resource - * - * @return bool true if a result is available otherwise return false - */ - function nextResult($result) - { - return false; - } - - // }}} - // {{{ fetchInto() - - /** - * Places a row from the result set into the given array - * - * Formating of the array and the data therein are configurable. - * See DB_result::fetchInto() for more information. - * - * This method is not meant to be called directly. Use - * DB_result::fetchInto() instead. It can't be declared "protected" - * because DB_result is a separate object. - * - * @param resource $result the query result resource - * @param array $arr the referenced array to put the data in - * @param int $fetchmode how the resulting array should be indexed - * @param int $rownum the row number to fetch (0 = first row) - * - * @return mixed DB_OK on success, NULL when the end of a result set is - * reached or on failure - * - * @see DB_result::fetchInto() - */ - function fetchInto($result, &$arr, $fetchmode, $rownum = null) - { - if ($rownum !== null) { - if (!@sqlite_seek($this->result, $rownum)) { - return null; - } - } - if ($fetchmode & DB_FETCHMODE_ASSOC) { - $arr = @sqlite_fetch_array($result, SQLITE_ASSOC); - if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) { - $arr = array_change_key_case($arr, CASE_LOWER); - } - - /* Remove extraneous " characters from the fields in the result. - * Fixes bug #11716. */ - if (is_array($arr) && count($arr) > 0) { - $strippedArr = array(); - foreach ($arr as $field => $value) { - $strippedArr[trim($field, '"')] = $value; - } - $arr = $strippedArr; - } - } else { - $arr = @sqlite_fetch_array($result, SQLITE_NUM); - } - if (!$arr) { - return null; - } - if ($this->options['portability'] & DB_PORTABILITY_RTRIM) { - /* - * Even though this DBMS already trims output, we do this because - * a field might have intentional whitespace at the end that - * gets removed by DB_PORTABILITY_RTRIM under another driver. - */ - $this->_rtrimArrayValues($arr); - } - if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) { - $this->_convertNullArrayValuesToEmpty($arr); - } - return DB_OK; - } - - // }}} - // {{{ freeResult() - - /** - * Deletes the result set and frees the memory occupied by the result set - * - * This method is not meant to be called directly. Use - * DB_result::free() instead. It can't be declared "protected" - * because DB_result is a separate object. - * - * @param resource $result PHP's query result resource - * - * @return bool TRUE on success, FALSE if $result is invalid - * - * @see DB_result::free() - */ - function freeResult(&$result) - { - // XXX No native free? - if (!is_resource($result)) { - return false; - } - $result = null; - return true; - } - - // }}} - // {{{ numCols() - - /** - * Gets the number of columns in a result set - * - * This method is not meant to be called directly. Use - * DB_result::numCols() instead. It can't be declared "protected" - * because DB_result is a separate object. - * - * @param resource $result PHP's query result resource - * - * @return int the number of columns. A DB_Error object on failure. - * - * @see DB_result::numCols() - */ - function numCols($result) - { - $cols = @sqlite_num_fields($result); - if (!$cols) { - return $this->sqliteRaiseError(); - } - return $cols; - } - - // }}} - // {{{ numRows() - - /** - * Gets the number of rows in a result set - * - * This method is not meant to be called directly. Use - * DB_result::numRows() instead. It can't be declared "protected" - * because DB_result is a separate object. - * - * @param resource $result PHP's query result resource - * - * @return int the number of rows. A DB_Error object on failure. - * - * @see DB_result::numRows() - */ - function numRows($result) - { - $rows = @sqlite_num_rows($result); - if ($rows === null) { - return $this->sqliteRaiseError(); - } - return $rows; - } - - // }}} - // {{{ affected() - - /** - * Determines the number of rows affected by a data maniuplation query - * - * 0 is returned for queries that don't manipulate data. - * - * @return int the number of rows. A DB_Error object on failure. - */ - function affectedRows() - { - return @sqlite_changes($this->connection); - } - - // }}} - // {{{ dropSequence() - - /** - * Deletes a sequence - * - * @param string $seq_name name of the sequence to be deleted - * - * @return int DB_OK on success. A DB_Error object on failure. - * - * @see DB_common::dropSequence(), DB_common::getSequenceName(), - * DB_sqlite::nextID(), DB_sqlite::createSequence() - */ - function dropSequence($seq_name) - { - return $this->query('DROP TABLE ' . $this->getSequenceName($seq_name)); - } - - /** - * Creates a new sequence - * - * @param string $seq_name name of the new sequence - * - * @return int DB_OK on success. A DB_Error object on failure. - * - * @see DB_common::createSequence(), DB_common::getSequenceName(), - * DB_sqlite::nextID(), DB_sqlite::dropSequence() - */ - function createSequence($seq_name) - { - $seqname = $this->getSequenceName($seq_name); - $query = 'CREATE TABLE ' . $seqname . - ' (id INTEGER UNSIGNED PRIMARY KEY) '; - $result = $this->query($query); - if (DB::isError($result)) { - return($result); - } - $query = "CREATE TRIGGER ${seqname}_cleanup AFTER INSERT ON $seqname - BEGIN - DELETE FROM $seqname WHERE id<LAST_INSERT_ROWID(); - END "; - $result = $this->query($query); - if (DB::isError($result)) { - return($result); - } - } - - // }}} - // {{{ nextId() - - /** - * Returns the next free id in a sequence - * - * @param string $seq_name name of the sequence - * @param boolean $ondemand when true, the seqence is automatically - * created if it does not exist - * - * @return int the next id number in the sequence. - * A DB_Error object on failure. - * - * @see DB_common::nextID(), DB_common::getSequenceName(), - * DB_sqlite::createSequence(), DB_sqlite::dropSequence() - */ - function nextId($seq_name, $ondemand = true) - { - $seqname = $this->getSequenceName($seq_name); - - do { - $repeat = 0; - $this->pushErrorHandling(PEAR_ERROR_RETURN); - $result = $this->query("INSERT INTO $seqname (id) VALUES (NULL)"); - $this->popErrorHandling(); - if ($result === DB_OK) { - $id = @sqlite_last_insert_rowid($this->connection); - if ($id != 0) { - return $id; - } - } elseif ($ondemand && DB::isError($result) && - $result->getCode() == DB_ERROR_NOSUCHTABLE) - { - $result = $this->createSequence($seq_name); - if (DB::isError($result)) { - return $this->raiseError($result); - } else { - $repeat = 1; - } - } - } while ($repeat); - - return $this->raiseError($result); - } - - // }}} - // {{{ getDbFileStats() - - /** - * Get the file stats for the current database - * - * Possible arguments are dev, ino, mode, nlink, uid, gid, rdev, size, - * atime, mtime, ctime, blksize, blocks or a numeric key between - * 0 and 12. - * - * @param string $arg the array key for stats() - * - * @return mixed an array on an unspecified key, integer on a passed - * arg and false at a stats error - */ - function getDbFileStats($arg = '') - { - $stats = stat($this->dsn['database']); - if ($stats == false) { - return false; - } - if (is_array($stats)) { - if (is_numeric($arg)) { - if (((int)$arg <= 12) & ((int)$arg >= 0)) { - return false; - } - return $stats[$arg ]; - } - if (array_key_exists(trim($arg), $stats)) { - return $stats[$arg ]; - } - } - return $stats; - } - - // }}} - // {{{ escapeSimple() - - /** - * Escapes a string according to the current DBMS's standards - * - * In SQLite, this makes things safe for inserts/updates, but may - * cause problems when performing text comparisons against columns - * containing binary data. See the - * {@link http://php.net/sqlite_escape_string PHP manual} for more info. - * - * @param string $str the string to be escaped - * - * @return string the escaped string - * - * @since Method available since Release 1.6.1 - * @see DB_common::escapeSimple() - */ - function escapeSimple($str) - { - return @sqlite_escape_string($str); - } - - // }}} - // {{{ modifyLimitQuery() - - /** - * Adds LIMIT clauses to a query string according to current DBMS standards - * - * @param string $query the query to modify - * @param int $from the row to start to fetching (0 = the first row) - * @param int $count the numbers of rows to fetch - * @param mixed $params array, string or numeric data to be used in - * execution of the statement. Quantity of items - * passed must match quantity of placeholders in - * query: meaning 1 placeholder for non-array - * parameters or 1 placeholder per array element. - * - * @return string the query string with LIMIT clauses added - * - * @access protected - */ - function modifyLimitQuery($query, $from, $count, $params = array()) - { - return "$query LIMIT $count OFFSET $from"; - } - - // }}} - // {{{ modifyQuery() - - /** - * Changes a query string for various DBMS specific reasons - * - * This little hack lets you know how many rows were deleted - * when running a "DELETE FROM table" query. Only implemented - * if the DB_PORTABILITY_DELETE_COUNT portability option is on. - * - * @param string $query the query string to modify - * - * @return string the modified query string - * - * @access protected - * @see DB_common::setOption() - */ - function modifyQuery($query) - { - if ($this->options['portability'] & DB_PORTABILITY_DELETE_COUNT) { - if (preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $query)) { - $query = preg_replace('/^\s*DELETE\s+FROM\s+(\S+)\s*$/', - 'DELETE FROM \1 WHERE 1=1', $query); - } - } - return $query; - } - - // }}} - // {{{ sqliteRaiseError() - - /** - * Produces a DB_Error object regarding the current problem - * - * @param int $errno if the error is being manually raised pass a - * DB_ERROR* constant here. If this isn't passed - * the error information gathered from the DBMS. - * - * @return object the DB_Error object - * - * @see DB_common::raiseError(), - * DB_sqlite::errorNative(), DB_sqlite::errorCode() - */ - function sqliteRaiseError($errno = null) - { - $native = $this->errorNative(); - if ($errno === null) { - $errno = $this->errorCode($native); - } - - $errorcode = @sqlite_last_error($this->connection); - $userinfo = "$errorcode ** $this->last_query"; - - return $this->raiseError($errno, null, null, $userinfo, $native); - } - - // }}} - // {{{ errorNative() - - /** - * Gets the DBMS' native error message produced by the last query - * - * {@internal This is used to retrieve more meaningfull error messages - * because sqlite_last_error() does not provide adequate info.}} - * - * @return string the DBMS' error message - */ - function errorNative() - { - return $this->_lasterror; - } - - // }}} - // {{{ errorCode() - - /** - * Determines PEAR::DB error code from the database's text error message - * - * @param string $errormsg the error message returned from the database - * - * @return integer the DB error number - */ - function errorCode($errormsg) - { - static $error_regexps; - - // PHP 5.2+ prepends the function name to $php_errormsg, so we need - // this hack to work around it, per bug #9599. - $errormsg = preg_replace('/^sqlite[a-z_]+\(\): /', '', $errormsg); - - if (!isset($error_regexps)) { - $error_regexps = array( - '/^no such table:/' => DB_ERROR_NOSUCHTABLE, - '/^no such index:/' => DB_ERROR_NOT_FOUND, - '/^(table|index) .* already exists$/' => DB_ERROR_ALREADY_EXISTS, - '/PRIMARY KEY must be unique/i' => DB_ERROR_CONSTRAINT, - '/is not unique/' => DB_ERROR_CONSTRAINT, - '/columns .* are not unique/i' => DB_ERROR_CONSTRAINT, - '/uniqueness constraint failed/' => DB_ERROR_CONSTRAINT, - '/may not be NULL/' => DB_ERROR_CONSTRAINT_NOT_NULL, - '/^no such column:/' => DB_ERROR_NOSUCHFIELD, - '/column not present in both tables/i' => DB_ERROR_NOSUCHFIELD, - '/^near ".*": syntax error$/' => DB_ERROR_SYNTAX, - '/[0-9]+ values for [0-9]+ columns/i' => DB_ERROR_VALUE_COUNT_ON_ROW, - ); - } - foreach ($error_regexps as $regexp => $code) { - if (preg_match($regexp, $errormsg)) { - return $code; - } - } - // Fall back to DB_ERROR if there was no mapping. - return DB_ERROR; - } - - // }}} - // {{{ tableInfo() - - /** - * Returns information about a table - * - * @param string $result a string containing the name of a table - * @param int $mode a valid tableInfo mode - * - * @return array an associative array with the information requested. - * A DB_Error object on failure. - * - * @see DB_common::tableInfo() - * @since Method available since Release 1.7.0 - */ - function tableInfo($result, $mode = null) - { - if (is_string($result)) { - /* - * Probably received a table name. - * Create a result resource identifier. - */ - $id = @sqlite_array_query($this->connection, - "PRAGMA table_info('$result');", - SQLITE_ASSOC); - $got_string = true; - } else { - $this->last_query = ''; - return $this->raiseError(DB_ERROR_NOT_CAPABLE, null, null, null, - 'This DBMS can not obtain tableInfo' . - ' from result sets'); - } - - if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) { - $case_func = 'strtolower'; - } else { - $case_func = 'strval'; - } - - $count = count($id); - $res = array(); - - if ($mode) { - $res['num_fields'] = $count; - } - - for ($i = 0; $i < $count; $i++) { - if (strpos($id[$i]['type'], '(') !== false) { - $bits = explode('(', $id[$i]['type']); - $type = $bits[0]; - $len = rtrim($bits[1],')'); - } else { - $type = $id[$i]['type']; - $len = 0; - } - - $flags = ''; - if ($id[$i]['pk']) { - $flags .= 'primary_key '; - } - if ($id[$i]['notnull']) { - $flags .= 'not_null '; - } - if ($id[$i]['dflt_value'] !== null) { - $flags .= 'default_' . rawurlencode($id[$i]['dflt_value']); - } - $flags = trim($flags); - - $res[$i] = array( - 'table' => $case_func($result), - 'name' => $case_func($id[$i]['name']), - 'type' => $type, - 'len' => $len, - '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; - } - } - - return $res; - } - - // }}} - // {{{ getSpecialQuery() - - /** - * Obtains the query string needed for listing a given type of objects - * - * @param string $type the kind of objects you want to retrieve - * @param array $args SQLITE DRIVER ONLY: a private array of arguments - * used by the getSpecialQuery(). Do not use - * this directly. - * - * @return string the SQL query string or null if the driver doesn't - * support the object type requested - * - * @access protected - * @see DB_common::getListOf() - */ - function getSpecialQuery($type, $args = array()) - { - if (!is_array($args)) { - return $this->raiseError('no key specified', null, null, null, - 'Argument has to be an array.'); - } - - switch ($type) { - case 'master': - return 'SELECT * FROM sqlite_master;'; - case 'tables': - return "SELECT name FROM sqlite_master WHERE type='table' " - . 'UNION ALL SELECT name FROM sqlite_temp_master ' - . "WHERE type='table' ORDER BY name;"; - case 'schema': - return 'SELECT sql FROM (SELECT * FROM sqlite_master ' - . 'UNION ALL SELECT * FROM sqlite_temp_master) ' - . "WHERE type!='meta' " - . 'ORDER BY tbl_name, type DESC, name;'; - case 'schemax': - case 'schema_x': - /* - * Use like: - * $res = $db->query($db->getSpecialQuery('schema_x', - * array('table' => 'table3'))); - */ - return 'SELECT sql FROM (SELECT * FROM sqlite_master ' - . 'UNION ALL SELECT * FROM sqlite_temp_master) ' - . "WHERE tbl_name LIKE '{$args['table']}' " - . "AND type!='meta' " - . 'ORDER BY type DESC, name;'; - case 'alter': - /* - * SQLite does not support ALTER TABLE; this is a helper query - * to handle this. 'table' represents the table name, 'rows' - * the news rows to create, 'save' the row(s) to keep _with_ - * the data. - * - * Use like: - * $args = array( - * 'table' => $table, - * 'rows' => "id INTEGER PRIMARY KEY, firstname TEXT, surname TEXT, datetime TEXT", - * 'save' => "NULL, titel, content, datetime" - * ); - * $res = $db->query( $db->getSpecialQuery('alter', $args)); - */ - $rows = strtr($args['rows'], $this->keywords); - - $q = array( - 'BEGIN TRANSACTION', - "CREATE TEMPORARY TABLE {$args['table']}_backup ({$args['rows']})", - "INSERT INTO {$args['table']}_backup SELECT {$args['save']} FROM {$args['table']}", - "DROP TABLE {$args['table']}", - "CREATE TABLE {$args['table']} ({$args['rows']})", - "INSERT INTO {$args['table']} SELECT {$rows} FROM {$args['table']}_backup", - "DROP TABLE {$args['table']}_backup", - 'COMMIT', - ); - - /* - * This is a dirty hack, since the above query will not get - * executed with a single query call so here the query method - * will be called directly and return a select instead. - */ - foreach ($q as $query) { - $this->query($query); - } - return "SELECT * FROM {$args['table']};"; - default: - return null; - } - } - - // }}} -} - -/* - * Local variables: - * tab-width: 4 - * c-basic-offset: 4 - * End: - */ - -?> |