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server/lib/MDB2/Driver/sqlite3.php

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sqlite3 driver for mdb2 the only problem that I found with it so far is that it gives a database locked error on login, the rest seems to work fine but more testing is required.
2011-06-13 02:05:41 +00:00
<?php
change licencing headers for sqlite3 driver
2011-10-22 10:31:07 +00:00
/**
* ownCloud
*
* @author Robin Appelman
* @copyright 2011 Robin Appelman icewind1991@gmail.com
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
sqlite3 driver for mdb2 the only problem that I found with it so far is that it gives a database locked error on login, the rest seems to work fine but more testing is required.
2011-06-13 02:05:41 +00:00
/**
* MDB2 SQLite3 driver
*
* @package MDB2
* @category Database
* @author Lukas Smith <smith@pooteeweet.org>
*/
class MDB2_Driver_sqlite3 extends MDB2_Driver_Common
{
// {{{ properties
public $string_quoting = array('start' => "'", 'end' => "'", 'escape' => "'", 'escape_pattern' => false);
public $identifier_quoting = array('start' => '"', 'end' => '"', 'escape' => '"');
public $_lasterror = '';
public $fix_assoc_fields_names = false;
// }}}
// {{{ constructor
/**
* Constructor
*/
function __construct()
{
parent::__construct();
$this->phptype = 'sqlite3';
$this->dbsyntax = 'sqlite';
$this->supported['sequences'] = 'emulated';
$this->supported['indexes'] = true;
$this->supported['affected_rows'] = true;
$this->supported['summary_functions'] = true;
$this->supported['order_by_text'] = true;
$this->supported['current_id'] = 'emulated';
$this->supported['limit_queries'] = true;
$this->supported['LOBs'] = true;
$this->supported['replace'] = true;
$this->supported['transactions'] = false;
$this->supported['savepoints'] = false;
$this->supported['sub_selects'] = true;
$this->supported['triggers'] = true;
$this->supported['auto_increment'] = true;
$this->supported['primary_key'] = false; // requires alter table implementation
$this->supported['result_introspection'] = false; // not implemented
make use of native sqlite3 prepared statements
2011-06-13 23:20:26 +00:00
$this->supported['prepared_statements'] = true;
sqlite3 driver for mdb2 the only problem that I found with it so far is that it gives a database locked error on login, the rest seems to work fine but more testing is required.
2011-06-13 02:05:41 +00:00
$this->supported['identifier_quoting'] = true;
$this->supported['pattern_escaping'] = false;
$this->supported['new_link'] = false;
$this->options['DBA_username'] = false;
$this->options['DBA_password'] = false;
$this->options['base_transaction_name'] = '___php_MDB2_sqlite_auto_commit_off';
$this->options['fixed_float'] = 0;
$this->options['database_path'] = '';
$this->options['database_extension'] = '';
$this->options['server_version'] = '';
$this->options['max_identifiers_length'] = 128; //no real limit
}
// }}}
// {{{ errorInfo()
/**
* This method is used to collect information about an error
*
* @param integer $error
* @return array
* @access public
*/
function errorInfo($error = null)
{
$native_code = null;
if ($this->connection) {
$native_code = $this->connection->lastErrorCode();
}
$native_msg = $this->_lasterror
? html_entity_decode($this->_lasterror) : $this->connection->lastErrorMsg();
// PHP 5.2+ prepends the function name to $php_errormsg, so we need
// this hack to work around it, per bug #9599.
$native_msg = preg_replace('/^sqlite[a-z_]+\(\)[^:]*: /', '', $native_msg);
if (is_null($error)) {
static $error_regexps;
if (empty($error_regexps)) {
$error_regexps = array(
'/^no such table:/' => MDB2_ERROR_NOSUCHTABLE,
'/^no such index:/' => MDB2_ERROR_NOT_FOUND,
'/^(table|index) .* already exists$/' => MDB2_ERROR_ALREADY_EXISTS,
'/PRIMARY KEY must be unique/i' => MDB2_ERROR_CONSTRAINT,
'/is not unique/' => MDB2_ERROR_CONSTRAINT,
'/columns .* are not unique/i' => MDB2_ERROR_CONSTRAINT,
'/uniqueness constraint failed/' => MDB2_ERROR_CONSTRAINT,
'/may not be NULL/' => MDB2_ERROR_CONSTRAINT_NOT_NULL,
'/^no such column:/' => MDB2_ERROR_NOSUCHFIELD,
'/no column named/' => MDB2_ERROR_NOSUCHFIELD,
'/column not present in both tables/i' => MDB2_ERROR_NOSUCHFIELD,
'/^near ".*": syntax error$/' => MDB2_ERROR_SYNTAX,
'/[0-9]+ values for [0-9]+ columns/i' => MDB2_ERROR_VALUE_COUNT_ON_ROW,
);
}
foreach ($error_regexps as $regexp => $code) {
if (preg_match($regexp, $native_msg)) {
$error = $code;
break;
}
}
}
return array($error, $native_code, $native_msg);
}
// }}}
// {{{ escape()
/**
* Quotes a string so it can be safely used in a query. It will quote
* the text so it can safely be used within a query.
*
* @param string the input string to quote
* @param bool escape wildcards
*
* @return string quoted string
*
* @access public
*/
public function escape($text, $escape_wildcards = false)
{
if($this->connection){
return $this->connection->escapeString($text);
}else{
return str_replace("'","''",$text);//TODO; more
}
}
// }}}
// {{{ beginTransaction()
/**
* Start a transaction or set a savepoint.
*
* @param string name of a savepoint to set
* @return mixed MDB2_OK on success, a MDB2 error on failure
*
* @access public
*/
function beginTransaction($savepoint = null)
{
$this->debug('Starting transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
if (!is_null($savepoint)) {
return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'savepoints are not supported', __FUNCTION__);
} elseif ($this->in_transaction) {
return MDB2_OK; //nothing to do
}
if (!$this->destructor_registered && $this->opened_persistent) {
$this->destructor_registered = true;
register_shutdown_function('MDB2_closeOpenTransactions');
}
$query = 'BEGIN TRANSACTION '.$this->options['base_transaction_name'];
$result =$this->_doQuery($query, true);
if (PEAR::isError($result)) {
return $result;
}
$this->in_transaction = true;
return MDB2_OK;
}
// }}}
// {{{ commit()
/**
* Commit the database changes done during a transaction that is in
* progress or release a savepoint. This function may only be called when
* auto-committing is disabled, otherwise it will fail. Therefore, a new
* transaction is implicitly started after committing the pending changes.
*
* @param string name of a savepoint to release
* @return mixed MDB2_OK on success, a MDB2 error on failure
*
* @access public
*/
function commit($savepoint = null)
{
$this->debug('Committing transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
if (!$this->in_transaction) {
return $this->raiseError(MDB2_ERROR_INVALID, null, null,
'commit/release savepoint cannot be done changes are auto committed', __FUNCTION__);
}
if (!is_null($savepoint)) {
return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'savepoints are not supported', __FUNCTION__);
}
$query = 'COMMIT TRANSACTION '.$this->options['base_transaction_name'];
$result =$this->_doQuery($query, true);
if (PEAR::isError($result)) {
return $result;
}
$this->in_transaction = false;
return MDB2_OK;
}
// }}}
// {{{
/**
* Cancel any database changes done during a transaction or since a specific
* savepoint that is in progress. This function may only be called when
* auto-committing is disabled, otherwise it will fail. Therefore, a new
* transaction is implicitly started after canceling the pending changes.
*
* @param string name of a savepoint to rollback to
* @return mixed MDB2_OK on success, a MDB2 error on failure
*
* @access public
*/
function rollback($savepoint = null)
{
$this->debug('Rolling back transaction/savepoint', __FUNCTION__, array('is_manip' => true, 'savepoint' => $savepoint));
if (!$this->in_transaction) {
return $this->raiseError(MDB2_ERROR_INVALID, null, null,
'rollback cannot be done changes are auto committed', __FUNCTION__);
}
if (!is_null($savepoint)) {
return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'savepoints are not supported', __FUNCTION__);
}
$query = 'ROLLBACK TRANSACTION '.$this->options['base_transaction_name'];
$result =$this->_doQuery($query, true);
if (PEAR::isError($result)) {
return $result;
}
$this->in_transaction = false;
return MDB2_OK;
}
// }}}
// {{{ function setTransactionIsolation()
/**
* Set the transacton isolation level.
*
* @param string standard isolation level
* READ UNCOMMITTED (allows dirty reads)
* READ COMMITTED (prevents dirty reads)
* REPEATABLE READ (prevents nonrepeatable reads)
* SERIALIZABLE (prevents phantom reads)
* @return mixed MDB2_OK on success, a MDB2 error on failure
*
* @access public
* @since 2.1.1
*/
fix sqlite3 driver against updated MDB2
2012-05-11 18:56:02 +00:00
function setTransactionIsolation($isolation,$options=array())
sqlite3 driver for mdb2 the only problem that I found with it so far is that it gives a database locked error on login, the rest seems to work fine but more testing is required.
2011-06-13 02:05:41 +00:00
{
$this->debug('Setting transaction isolation level', __FUNCTION__, array('is_manip' => true));
switch ($isolation) {
case 'READ UNCOMMITTED':
$isolation = 0;
break;
case 'READ COMMITTED':
case 'REPEATABLE READ':
case 'SERIALIZABLE':
$isolation = 1;
break;
default:
return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'isolation level is not supported: '.$isolation, __FUNCTION__);
}
$query = "PRAGMA read_uncommitted=$isolation";
return $this->_doQuery($query, true);
}
// }}}
// {{{ getDatabaseFile()
/**
* Builds the string with path+dbname+extension
*
* @return string full database path+file
* @access protected
*/
function _getDatabaseFile($database_name)
{
if ($database_name === '' || $database_name === ':memory:') {
return $database_name;
}
return $this->options['database_path'].$database_name.$this->options['database_extension'];
}
// }}}
// {{{ connect()
/**
* Connect to the database
*
* @return true on success, MDB2 Error Object on failure
**/
function connect()
{
only create one connection to a sqlite3 database, fixes 'Database locked' errors with webdav
2011-06-17 14:09:43 +00:00
if($this->connection instanceof SQLite3){
return MDB2_OK;
}
Remove global vars and use the OC static version. Removed global vars are DOCUMENTROOT, SERVERROOT, SUBURI, WEBROOT and CONFIG_DATADIRECTORY
2011-09-18 17:37:54 +00:00
$datadir=OC_Config::getValue( "datadirectory", OC::$SERVERROOT."/data" );
sqlite3 driver for mdb2 the only problem that I found with it so far is that it gives a database locked error on login, the rest seems to work fine but more testing is required.
2011-06-13 02:05:41 +00:00
$database_file = $this->_getDatabaseFile($this->database_name);
if (is_resource($this->connection)) {
//if (count(array_diff($this->connected_dsn, $this->dsn)) == 0
if (MDB2::areEquals($this->connected_dsn, $this->dsn)
&& $this->connected_database_name == $database_file
&& $this->opened_persistent == $this->options['persistent']
) {
return MDB2_OK;
}
$this->disconnect(false);
}
if (!PEAR::loadExtension($this->phptype)) {
return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
'extension '.$this->phptype.' is not compiled into PHP', __FUNCTION__);
}
if (empty($this->database_name)) {
return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
'unable to establish a connection', __FUNCTION__);
}
if ($database_file !== ':memory:') {
if(!strpos($database_file,'.db')){
$database_file="$datadir/$database_file.db";
}
if (!file_exists($database_file)) {
if (!touch($database_file)) {
return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
'Could not create database file', __FUNCTION__);
}
if (!isset($this->dsn['mode'])
|| !is_numeric($this->dsn['mode'])
) {
$mode = 0644;
} else {
$mode = octdec($this->dsn['mode']);
}
if (!chmod($database_file, $mode)) {
return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
'Could not be chmodded database file', __FUNCTION__);
}
if (!file_exists($database_file)) {
return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
'Could not be found database file', __FUNCTION__);
}
}
if (!is_file($database_file)) {
return $this->raiseError(MDB2_ERROR_INVALID, null, null,
'Database is a directory name', __FUNCTION__);
}
if (!is_readable($database_file)) {
return $this->raiseError(MDB2_ERROR_ACCESS_VIOLATION, null, null,
'Could not read database file', __FUNCTION__);
}
}
$php_errormsg = '';
$this->connection = new SQLite3($database_file);
fix sqlite3 driver for php<5.3
2011-06-20 17:04:31 +00:00
if(is_callable(array($this->connection,'busyTimeout'))){//busy timout is only available in php>=5.3
$this->connection->busyTimeout(100);
}
sqlite3 driver for mdb2 the only problem that I found with it so far is that it gives a database locked error on login, the rest seems to work fine but more testing is required.
2011-06-13 02:05:41 +00:00
$this->_lasterror = $this->connection->lastErrorMsg();
if (!$this->connection) {
return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null,
'unable to establish a connection', __FUNCTION__);
}
if ($this->fix_assoc_fields_names ||
$this->options['portability'] & MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES)
{
$this->connection->exec("PRAGMA short_column_names = 1");
$this->fix_assoc_fields_names = true;
}
$this->connected_dsn = $this->dsn;
$this->connected_database_name = $database_file;
$this->opened_persistent = $this->getoption('persistent');
$this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
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)
{
$database_file = $this->_getDatabaseFile($name);
$result = file_exists($database_file);
return $result;
}
// }}}
// {{{ disconnect()
/**
* 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 ($this->connection instanceof SQLite3) {
if ($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'] = $persistent;
}
if (!$this->opened_persistent || $force) {
$this->connection->close();
}
} else {
return false;
}
return parent::disconnect($force);
}
// }}}
// {{{ _doQuery()
/**
* Execute a query
* @param string $query query
* @param boolean $is_manip if the query is a manipulation query
* @param resource $connection
* @param string $database_name
* @return result or error object
* @access protected
*/
strict standards fixes for sqlite3
2012-05-18 23:39:41 +00:00
function _doQuery($query, $is_manip = false, $connection = null, $database_name = null)
sqlite3 driver for mdb2 the only problem that I found with it so far is that it gives a database locked error on login, the rest seems to work fine but more testing is required.
2011-06-13 02:05:41 +00:00
{
$this->last_query = $query;
$result = $this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'pre'));
if ($result) {
if (PEAR::isError($result)) {
return $result;
}
$query = $result;
}
if ($this->options['disable_query']) {
$result = $is_manip ? 0 : null;
return $result;
}
$result=$this->connection->query($query.';');
$this->_lasterror = $this->connection->lastErrorMsg();
if (!$result) {
$err =$this->raiseError(null, null, null,
'Could not execute statement', __FUNCTION__);
return $err;
}
$this->debug($query, 'query', array('is_manip' => $is_manip, 'when' => 'post', 'result' => $result));
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)
{
return $this->connection->changes();
}
// }}}
// {{{ _modifyQuery()
/**
* Changes a query string for various DBMS specific reasons
*
* @param string $query query to modify
* @param boolean $is_manip if it is a DML query
* @param integer $limit limit the number of rows
* @param integer $offset start reading from given offset
* @return string modified query
* @access protected
*/
function _modifyQuery($query, $is_manip, $limit, $offset)
{
if ($this->options['portability'] & MDB2_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', $query);
}
}
if ($limit > 0
&& !preg_match('/LIMIT\s*\d(?:\s*(?:,|OFFSET)\s*\d+)?(?:[^\)]*)?$/i', $query)
) {
$query = rtrim($query);
if (substr($query, -1) == ';') {
$query = substr($query, 0, -1);
}
if ($is_manip) {
$query.= " LIMIT $limit";
} else {
$query.= " LIMIT $offset,$limit";
}
}
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)
{
$server_info = false;
if ($this->connected_server_info) {
$server_info = $this->connected_server_info;
} elseif ($this->options['server_version']) {
$server_info = $this->options['server_version'];
} elseif (function_exists('sqlite_libversion')) {
$server_info = @sqlite_libversion();
}
if (!$server_info) {
return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'Requires either the "server_version" option or the sqlite_libversion() function', __FUNCTION__);
}
// cache server_info
$this->connected_server_info = $server_info;
if (!$native) {
$tmp = explode('.', $server_info, 3);
$server_info = array(
'major' => isset($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;
}
// }}}
// {{{ replace()
/**
* Execute a SQL REPLACE query. A REPLACE query is identical to a INSERT
* query, except that if there is already a row in the table with the same
* key field values, the old row is deleted before the new row is inserted.
*
* The REPLACE type of query does not make part of the SQL standards. Since
* practically only SQLite implements it natively, this type of query is
* emulated through this method for other DBMS using standard types of
* queries inside a transaction to assure the atomicity of the operation.
*
* @access public
*
* @param string $table name of the table on which the REPLACE query will
* be executed.
* @param array $fields associative array that describes the fields and the
* values that will be inserted or updated in the specified table. The
* indexes of the array are the names of all the fields of the table. The
* values of the array are also associative arrays that describe the
* values and other properties of the table fields.
*
* Here follows a list of field properties that need to be specified:
*
* value:
* Value to be assigned to the specified field. This value may be
* of specified in database independent type format as this
* function can perform the necessary datatype conversions.
*
* Default:
* this property is required unless the Null property
* is set to 1.
*
* type
* Name of the type of the field. Currently, all types Metabase
* are supported except for clob and blob.
*
* Default: no type conversion
*
* null
* Boolean property that indicates that the value for this field
* should be set to null.
*
* The default value for fields missing in INSERT queries may be
* specified the definition of a table. Often, the default value
* is already null, but since the REPLACE may be emulated using
* an UPDATE query, make sure that all fields of the table are
* listed in this function argument array.
*
* Default: 0
*
* key
* Boolean property that indicates that this field should be
* handled as a primary key or at least as part of the compound
* unique index of the table that will determine the row that will
* updated if it exists or inserted a new row otherwise.
*
* This function will fail if no key field is specified or if the
* value of a key field is set to null because fields that are
* part of unique index they may not be null.
*
* Default: 0
*
* @return mixed MDB2_OK on success, a MDB2 error on failure
*/
function replace($table, $fields)
{
$count = count($fields);
$query = $values = '';
$keys = $colnum = 0;
for (reset($fields); $colnum < $count; next($fields), $colnum++) {
$name = key($fields);
if ($colnum > 0) {
$query .= ',';
$values.= ',';
}
$query.= $this->quoteIdentifier($name, true);
if (isset($fields[$name]['null']) && $fields[$name]['null']) {
$value = 'NULL';
} else {
$type = isset($fields[$name]['type']) ? $fields[$name]['type'] : null;
$value = $this->quote($fields[$name]['value'], $type);
if (PEAR::isError($value)) {
return $value;
}
}
$values.= $value;
if (isset($fields[$name]['key']) && $fields[$name]['key']) {
if ($value === 'NULL') {
return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
'key value '.$name.' may not be NULL', __FUNCTION__);
}
$keys++;
}
}
if ($keys == 0) {
return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
'not specified which fields are keys', __FUNCTION__);
}
$connection = $this->getConnection();
if (PEAR::isError($connection)) {
return $connection;
}
$table = $this->quoteIdentifier($table, true);
$query = "REPLACE INTO $table ($query) VALUES ($values)";
$result =$this->_doQuery($query, true, $connection);
if (PEAR::isError($result)) {
return $result;
}
return $this->_affectedRows($connection, $result);
}
// }}}
// {{{ nextID()
/**
* Returns the next free id of a sequence
*
* @param string $seq_name name of the sequence
* @param boolean $ondemand when true the sequence is
* automatic created, if it
* not exists
*
* @return mixed MDB2 Error Object or id
* @access public
*/
function nextID($seq_name, $ondemand = true)
{
$sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
$seqcol_name = $this->options['seqcol_name'];
$query = "INSERT INTO $sequence_name ($seqcol_name) VALUES (NULL)";
$this->pushErrorHandling(PEAR_ERROR_RETURN);
$this->expectError(MDB2_ERROR_NOSUCHTABLE);
$result =$this->_doQuery($query, true);
$this->popExpect();
$this->popErrorHandling();
if (PEAR::isError($result)) {
if ($ondemand && $result->getCode() == MDB2_ERROR_NOSUCHTABLE) {
$this->loadModule('Manager', null, true);
$result = $this->manager->createSequence($seq_name);
if (PEAR::isError($result)) {
return $this->raiseError($result, null, null,
'on demand sequence '.$seq_name.' could not be created', __FUNCTION__);
} else {
return $this->nextID($seq_name, false);
}
}
return $result;
}
$value = $this->lastInsertID();
if (is_numeric($value)) {
$query = "DELETE FROM $sequence_name WHERE $seqcol_name < $value";
$result =$this->_doQuery($query, true);
if (PEAR::isError($result)) {
$this->warnings[] = 'nextID: could not delete previous sequence table values from '.$seq_name;
}
}
return $value;
}
// }}}
// {{{ lastInsertID()
/**
* Returns the autoincrement ID if supported or $id or fetches the current
* ID in a sequence called: $table.(empty($field) ? '' : '_'.$field)
*
* @param string $table name of the table into which a new row was inserted
* @param string $field name of the field into which a new row was inserted
* @return mixed MDB2 Error Object or id
* @access public
*/
function lastInsertID($table = null, $field = null)
{
return $this->connection->lastInsertRowID();
}
// }}}
// {{{ currID()
/**
* Returns the current id of a sequence
*
* @param string $seq_name name of the sequence
* @return mixed MDB2 Error Object or id
* @access public
*/
function currID($seq_name)
{
$sequence_name = $this->quoteIdentifier($this->getSequenceName($seq_name), true);
$seqcol_name = $this->quoteIdentifier($this->options['seqcol_name'], true);
$query = "SELECT MAX($seqcol_name) FROM $sequence_name";
return $this->queryOne($query, 'integer');
}
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/**
* 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 $lobs key (field) value (parameter) pair for all lob placeholders
* @return mixed resource handle for the prepared query on success, a MDB2
* error on failure
* @access public
* @see bindParam, execute
*/
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function prepare($query, $types = null, $result_types = null, $lobs = array())
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{
if ($this->options['emulate_prepared']
|| $this->supported['prepared_statements'] !== true
) {
$obj =& parent::prepare($query, $types, $result_types, $lobs);
return $obj;
}
$this->last_query = $query;
$is_manip = ($result_types === MDB2_PREPARE_MANIP);
$offset = $this->offset;
$limit = $this->limit;
$this->offset = $this->limit = 0;
$query = $this->_modifyQuery($query, $is_manip, $limit, $offset);
$result = $this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'pre'));
if ($result) {
if (PEAR::isError($result)) {
return $result;
}
$query = $result;
}
$placeholder_type_guess = $placeholder_type = null;
$question = '?';
$colon = ':';
$positions = array();
$position = 0;
while ($position < strlen($query)) {
$q_position = strpos($query, $question, $position);
$c_position = strpos($query, $colon, $position);
if ($q_position && $c_position) {
$p_position = min($q_position, $c_position);
} elseif ($q_position) {
$p_position = $q_position;
} elseif ($c_position) {
$p_position = $c_position;
} else {
break;
}
if (is_null($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] == $placeholder_type_guess) {
if (is_null($placeholder_type)) {
$placeholder_type = $query[$p_position];
$question = $colon = $placeholder_type;
}
if ($placeholder_type == ':') {
$regexp = '/^.{'.($position+1).'}('.$this->options['bindname_format'].').*$/s';
$parameter = preg_replace($regexp, '\\1', $query);
if ($parameter === '') {
$err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
'named parameter name must match "bindname_format" option', __FUNCTION__);
return $err;
}
$positions[$p_position] = $parameter;
$query = substr_replace($query, '?', $position, strlen($parameter)+1);
} else {
$positions[$p_position] = count($positions);
}
$position = $p_position + 1;
} else {
$position = $p_position;
}
}
$connection = $this->getConnection();
if (PEAR::isError($connection)) {
return $connection;
}
$statement =$this->connection->prepare($query);
if (!$statement) {
return $this->db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
'unable to prepare statement: '.$query);
}
$class_name = 'MDB2_Statement_'.$this->phptype;
$obj = new $class_name($this, $statement, $positions, $query, $types, $result_types, $is_manip, $limit, $offset);
$this->debug($query, __FUNCTION__, array('is_manip' => $is_manip, 'when' => 'post', 'result' => $obj));
return $obj;
}
sqlite3 driver for mdb2 the only problem that I found with it so far is that it gives a database locked error on login, the rest seems to work fine but more testing is required.
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}
/**
* MDB2 SQLite result driver
*
* @package MDB2
* @category Database
* @author Lukas Smith <smith@pooteeweet.org>
*/
class MDB2_Result_sqlite3 extends MDB2_Result_Common
{
// }}}
// {{{ fetchRow()
/**
* Fetch a row and insert the data into an existing array.
*
* @param int $fetchmode how the array data should be indexed
* @param int $rownum number of the row where the data can be found
* @return int data array on success, a MDB2 error on failure
* @access public
*/
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function fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null)
sqlite3 driver for mdb2 the only problem that I found with it so far is that it gives a database locked error on login, the rest seems to work fine but more testing is required.
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{
if (!is_null($rownum)) {
$seek = $this->seek($rownum);
if (PEAR::isError($seek)) {
return $seek;
}
}
if ($fetchmode == MDB2_FETCHMODE_DEFAULT) {
$fetchmode = $this->db->fetchmode;
}
if ($fetchmode & MDB2_FETCHMODE_ASSOC) {
//$row = @sqlite_fetch_array($this->result, SQLITE_ASSOC);
$row=$this->result->fetchArray(SQLITE3_ASSOC);
if (is_array($row)
&& $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
) {
$row = array_change_key_case($row, $this->db->options['field_case']);
}
} else {
$row=$this->result->fetchArray(SQLITE3_NUM);
}
if (!$row) {
if ($this->result === false) {
$err =$this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
'resultset has already been freed', __FUNCTION__);
return $err;
}
$null = null;
return $null;
}
$mode = $this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL;
$rtrim = false;
if ($this->db->options['portability'] & MDB2_PORTABILITY_RTRIM) {
if (empty($this->types)) {
$mode += MDB2_PORTABILITY_RTRIM;
} else {
$rtrim = true;
}
}
if ($mode) {
$this->db->_fixResultArrayValues($row, $mode);
}
if (!empty($this->types)) {
$row = $this->db->datatype->convertResultRow($this->types, $row, $rtrim);
}
if (!empty($this->values)) {
$this->_assignBindColumns($row);
}
if ($fetchmode === MDB2_FETCHMODE_OBJECT) {
$object_class = $this->db->options['fetch_class'];
if ($object_class == 'stdClass') {
$row = (object) $row;
} else {
$row = new $object_class($row);
}
}
++$this->rownum;
return $row;
}
// }}}
// {{{ _getColumnNames()
/**
* Retrieve the names of columns returned by the DBMS in a query result.
*
* @return mixed Array variable that holds the names of columns as keys
* or an MDB2 error on failure.
* Some DBMS may not return any columns when the result set
* does not contain any rows.
* @access private
*/
function _getColumnNames()
{
$columns = array();
$numcols = $this->numCols();
if (PEAR::isError($numcols)) {
return $numcols;
}
for ($column = 0; $column < $numcols; $column++) {
$column_name = $this->result->getColumnName($column);
$columns[$column_name] = $column;
}
if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
$columns = array_change_key_case($columns, $this->db->options['field_case']);
}
return $columns;
}
// }}}
// {{{ numCols()
/**
* Count the number of columns returned by the DBMS in a query result.
*
* @access public
* @return mixed integer value with the number of columns, a MDB2 error
* on failure
*/
function numCols()
{
$this->result->numColumns();
}
}
/**
* MDB2 SQLite buffered result driver
*
* @package MDB2
* @category Database
* @author Lukas Smith <smith@pooteeweet.org>
*/
class MDB2_BufferedResult_sqlite3 extends MDB2_Result_sqlite3
{
// {{{ seek()
/**
* Seek to a specific row in a result set
*
* @param int $rownum number of the row where the data can be found
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function seek($rownum = 0)
{
$this->result->reset();
for($i=0;$i<$rownum;$i++){
$this->result->fetchArray();
}
$this->rownum = $rownum - 1;
return MDB2_OK;
}
// }}}
// {{{ valid()
/**
* Check if the end of the result set has been reached
*
* @return mixed true or false on sucess, a MDB2 error on failure
* @access public
*/
function valid()
{
$numrows = $this->numRows();
if (PEAR::isError($numrows)) {
return $numrows;
}
return $this->rownum < ($numrows - 1);
}
// }}}
// {{{ numRows()
/**
* Returns the number of rows in a result object
*
* @return mixed MDB2 Error Object or the number of rows
* @access public
*/
function numRows()
{
$rows = 0;
$this->result->reset();
while($this->result->fetchArray()){
$rows++;
}
$this->result->reset();
return $rows;
}
}
/**
* MDB2 SQLite statement driver
*
* @package MDB2
* @category Database
* @author Lukas Smith <smith@pooteeweet.org>
*/
class MDB2_Statement_sqlite3 extends MDB2_Statement_Common
{
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// }}}
// {{{ function bindValue($parameter, &$value, $type = null)
private function getParamType($type){
switch(strtolower($type)){
case 'text':
return SQLITE3_TEXT;
case 'boolean':
case 'integer':
return SQLITE3_INTEGER;
case 'float':
return SQLITE3_FLOAT;
case 'blob':
return SQLITE3_BLOB;
}
}
/**
* Set the value of a parameter of a prepared query.
*
* @param int the order number of the parameter in the query
* statement. The order number of the first parameter is 1.
* @param mixed value that is meant to be assigned to specified
* parameter. The type of the value depends on the $type argument.
* @param string specifies the type of the field
*
* @return mixed MDB2_OK on success, a MDB2 error on failure
*
* @access public
*/
function bindValue($parameter, $value, $type = null){
if($type){
$type=$this->getParamType($type);
$this->statement->bindValue($parameter,$value,$type);
}else{
$this->statement->bindValue($parameter,$value);
}
return MDB2_OK;
}
/**
* Bind a variable to a parameter of a prepared query.
*
* @param int the order number of the parameter in the query
* statement. The order number of the first parameter is 1.
* @param mixed variable that is meant to be bound to specified
* parameter. The type of the value depends on the $type argument.
* @param string specifies the type of the field
*
* @return mixed MDB2_OK on success, a MDB2 error on failure
*
* @access public
*/
function bindParam($parameter, &$value, $type = null){
if($type){
$type=$this->getParamType($type);
$this->statement->bindParam($parameter,$value,$type);
}else{
$this->statement->bindParam($parameter,$value);
}
return MDB2_OK;
}
/**
* Release resources allocated for the specified prepared query.
*
* @return mixed MDB2_OK on success, a MDB2 error on failure
* @access public
*/
function free()
{
$this->statement->close();
}
sqlite3 driver for mdb2 the only problem that I found with it so far is that it gives a database locked error on login, the rest seems to work fine but more testing is required.
2011-06-13 02:05:41 +00:00
make use of native sqlite3 prepared statements
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/**
* Execute a prepared query statement helper method.
*
* @param mixed $result_class string which specifies which result class to use
* @param mixed $result_wrap_class string which specifies which class to wrap results in
*
* @return mixed MDB2_Result or integer (affected rows) on success,
* a MDB2 error on failure
* @access private
*/
strict standards fixes for sqlite3
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function _execute($result_class = true, $result_wrap_class = false){
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if (is_null($this->statement)) {
$result =& parent::_execute($result_class, $result_wrap_class);
return $result;
}
$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;
}
$result = $this->statement->execute();
if ($result==false) {
$err =$this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
'cant execute statement', __FUNCTION__);
}
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 $result;
}
/**
* Set the values of multiple a parameter of a prepared query in bulk.
*
* @param array specifies all necessary information
* for bindValue() the array elements must use keys corresponding to
* the number of the position of the parameter.
* @param array specifies the types of the fields
*
* @return mixed MDB2_OK on success, a MDB2 error on failure
*
* @access public
* @see bindParam()
*/
function bindValueArray($values, $types = null)
{
$types = is_array($types) ? array_values($types) : array_fill(0, count($values), null);
$parameters = array_keys($values);
foreach ($parameters as $key => $parameter) {
$this->db->pushErrorHandling(PEAR_ERROR_RETURN);
$this->db->expectError(MDB2_ERROR_NOT_FOUND);
$err = $this->bindValue($parameter+1, $values[$parameter], $types[$key]);
$this->db->popExpect();
$this->db->popErrorHandling();
if (PEAR::isError($err)) {
if ($err->getCode() == MDB2_ERROR_NOT_FOUND) {
//ignore (extra value for missing placeholder)
continue;
}
return $err;
}
}
return MDB2_OK;
}
// }}}
// {{{ function bindParamArray(&$values, $types = null)
/**
* Bind the variables of multiple a parameter of a prepared query in bulk.
*
* @param array specifies all necessary information
* for bindParam() the array elements must use keys corresponding to
* the number of the position of the parameter.
* @param array specifies the types of the fields
*
* @return mixed MDB2_OK on success, a MDB2 error on failure
*
* @access public
* @see bindParam()
*/
function bindParamArray(&$values, $types = null)
{
$types = is_array($types) ? array_values($types) : array_fill(0, count($values), null);
$parameters = array_keys($values);
foreach ($parameters as $key => $parameter) {
$err = $this->bindParam($parameter+1, $values[$parameter], $types[$key]);
if (PEAR::isError($err)) {
return $err;
}
}
return MDB2_OK;
}
// }}}
// {{{ function &execute($values = null, $result_class = true, $result_wrap_class = false)
/**
* Execute a prepared query statement.
*
* @param array specifies all necessary information
* for bindParam() the array elements must use keys corresponding
* to the number of the position of the parameter.
* @param mixed specifies which result class to use
* @param mixed specifies which class to wrap results in
*
* @return mixed MDB2_Result or integer (affected rows) on success,
* a MDB2 error on failure
* @access public
*/
strict standards fixes for sqlite3
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function execute($values = null, $result_class = true, $result_wrap_class = false)
make use of native sqlite3 prepared statements
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{
if (is_null($this->positions)) {
return $this->db->raiseError(MDB2_ERROR, null, null,
'Prepared statement has already been freed', __FUNCTION__);
}
$values = (array)$values;
if (!empty($values)) {
if(count($this->types)){
$types=$this->types;
}else{
$types=null;
}
$err = $this->bindValueArray($values,$types);
if (PEAR::isError($err)) {
return $this->db->raiseError(MDB2_ERROR, null, null,
'Binding Values failed with message: ' . $err->getMessage(), __FUNCTION__);
}
}
$result =$this->_execute($result_class, $result_wrap_class);
return $result;
}
only create one connection to a sqlite3 database, fixes 'Database locked' errors with webdav
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function __destruct() {
$this->free();
}
sqlite3 driver for mdb2 the only problem that I found with it so far is that it gives a database locked error on login, the rest seems to work fine but more testing is required.
2011-06-13 02:05:41 +00:00
}
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