<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
 * Fake database driver for testing purposes
 *
 * It has hardcoded results for given queries what makes easy to use it
 * in testsuite. Feel free to include other queries which your test will
 * need.
 *
 * @package    PhpMyAdmin-DBI
 * @subpackage Dummy
 */
if (! defined('PHPMYADMIN')) {
    exit;
}

require_once './libraries/dbi/DBIExtension.int.php';

/**
 * Array of queries this "driver" supports
 */
$GLOBALS['dummy_queries'] = array(
    array('query' => 'SELECT 1', 'result' => array(array('1'))),
    array(
        'query' => 'SELECT CURRENT_USER();',
        'result' => array(array('pma_test@localhost')),
    ),
    array(
        'query' => 'SELECT COUNT(*) FROM mysql.user',
        'result' => false,
    ),
    array(
        'query' => 'SHOW MASTER LOGS',
        'result' => false,
    ),
    array(
        'query' => 'SHOW STORAGE ENGINES',
        'result' => array(
            array(
                'Engine' => 'dummy',
                'Support' => 'YES',
                'Comment' => 'dummy comment'
            ),
            array(
                'Engine' => 'dummy2',
                'Support' => 'NO',
                'Comment' => 'dummy2 comment'
            ),
            array(
                'Engine' => 'FEDERATED',
                'Support' => 'NO',
                'Comment' => 'Federated MySQL storage engine'
            ),
        )
    ),
    array(
        'query' => 'SHOW STATUS WHERE Variable_name'
            . ' LIKE \'Innodb\\_buffer\\_pool\\_%\''
            . ' OR Variable_name = \'Innodb_page_size\';',
        'result' => array(
            array('Innodb_buffer_pool_pages_data', 0),
            array('Innodb_buffer_pool_pages_dirty', 0),
            array('Innodb_buffer_pool_pages_flushed', 0),
            array('Innodb_buffer_pool_pages_free', 0),
            array('Innodb_buffer_pool_pages_misc', 0),
            array('Innodb_buffer_pool_pages_total', 4096),
            array('Innodb_buffer_pool_read_ahead_rnd', 0),
            array('Innodb_buffer_pool_read_ahead', 0),
            array('Innodb_buffer_pool_read_ahead_evicted', 0),
            array('Innodb_buffer_pool_read_requests', 64),
            array('Innodb_buffer_pool_reads', 32),
            array('Innodb_buffer_pool_wait_free', 0),
            array('Innodb_buffer_pool_write_requests', 64),
            array('Innodb_page_size', 16384),
        )
    ),
    array(
        'query' => 'SHOW INNODB STATUS;',
        'result' => false,
    ),
    array(
        'query' => 'SELECT @@innodb_version;',
        'result' => array(
            array('1.1.8'),
        )
    ),
    array(
        'query' => 'SHOW GLOBAL VARIABLES LIKE \'innodb_file_per_table\';',
        'result' => array(
            array('innodb_file_per_table', 'OFF'),
        )
    ),
    array(
        'query' => 'SHOW GLOBAL VARIABLES LIKE \'innodb_file_format\';',
        'result' => array(
            array('innodb_file_format', 'Antelope'),
        )
    ),
    array(
        'query' => 'SHOW VARIABLES LIKE \'collation_server\'',
        'result' => array(
            array('collation_server', 'utf8_general_ci'),
        )
    ),
    array(
        'query' => 'SHOW VARIABLES LIKE \'language\';',
        'result' => array(),
    ),
    array(
        'query' => 'SHOW TABLES FROM `pma_test`;',
        'result' => array(
            array('table1'),
            array('table2'),
        )
    ),
    array(
        'query' => 'SHOW TABLES FROM `pmadb`',
        'result' => array(
            array('column_info'),
        )
    ),
    array(
        'query' => 'SHOW COLUMNS FROM `pma_test`.`table1`',
        'columns' => array(
            'Field', 'Type', 'Null', 'Key', 'Default', 'Extra'
        ),
        'result' => array(
            array('i', 'int(11)', 'NO', 'PRI', 'NULL', 'auto_increment'),
            array('o', 'int(11)', 'NO', 'MUL', 'NULL', ''),
        )
    ),
    array(
        'query' => 'SHOW INDEXES FROM `pma_test`.`table1` WHERE (Non_unique = 0)',
        'result' => array(),
    ),
    array(
        'query' => 'SHOW COLUMNS FROM `pma_test`.`table2`',
        'columns' => array(
            'Field', 'Type', 'Null', 'Key', 'Default', 'Extra'
        ),
        'result' => array(
            array('i', 'int(11)', 'NO', 'PRI', 'NULL', 'auto_increment'),
            array('o', 'int(11)', 'NO', 'MUL', 'NULL', ''),
        )
    ),
    array(
        'query' => 'SHOW INDEXES FROM `pma_test`.`table1`',
        'result' => array(),
    ),
    array(
        'query' => 'SHOW INDEXES FROM `pma_test`.`table2`',
        'result' => array(),
    ),
    array(
        'query' => 'SHOW COLUMNS FROM `pma`.`table1`',
        'columns' => array(
            'Field', 'Type', 'Null', 'Key', 'Default', 'Extra',
            'Privileges', 'Comment'
        ),
        'result' => array(
            array(
                'i', 'int(11)', 'NO', 'PRI', 'NULL', 'auto_increment',
                'select,insert,update,references', ''
            ),
            array(
                'o', 'varchar(100)', 'NO', 'MUL', 'NULL', '',
                'select,insert,update,references', ''
            ),
        )
    ),
    array(
        'query' => 'SELECT * FROM information_schema.CHARACTER_SETS',
        'columns' => array(
            'CHARACTER_SET_NAME', 'DEFAULT_COLLATE_NAME', 'DESCRIPTION', 'MAXLEN'
        ),
        'result' => array(
            array('utf8', 'utf8_general_ci', 'UTF-8 Unicode', 3),
        )
    ),
    array(
        'query' => 'SELECT * FROM information_schema.COLLATIONS',
        'columns' => array(
            'COLLATION_NAME', 'CHARACTER_SET_NAME', 'ID', 'IS_DEFAULT',
            'IS_COMPILED', 'SORTLEN'
        ),
        'result' => array(
            array('utf8_general_ci', 'utf8', 33, 'Yes', 'Yes', 1),
            array('utf8_bin', 'utf8', 83, '', 'Yes', 1),
        )
    ),
    array(
        'query' => 'SELECT `TABLE_NAME` FROM `INFORMATION_SCHEMA`.`TABLES`'
            . ' WHERE `TABLE_SCHEMA`=\'pma_test\' AND `TABLE_TYPE`=\'BASE TABLE\'',
        'result' => array(),
    ),
    array(
        'query' => 'SELECT upper(plugin_name) f FROM data_dictionary.plugins'
            . ' WHERE plugin_name IN (\'MYSQL_PASSWORD\',\'ROT13\')'
            . ' AND plugin_type = \'Function\' AND is_active',
        'columns' => array('f'),
        'result' => array(array('ROT13')),
    ),
    array(
        'query' => 'SELECT `column_name`, `mimetype`, `transformation`,'
            . ' `transformation_options` FROM `pmadb`.`column_info`'
            . ' WHERE `db_name` = \'pma_test\' AND `table_name` = \'table1\''
            . ' AND ( `mimetype` != \'\' OR `transformation` != \'\''
            . ' OR `transformation_options` != \'\')',
        'columns' => array(
            'column_name', 'mimetype', 'transformation', 'transformation_options'
        ),
        'result' => array(
            array('o', 'text/plain', 'sql'),
        )
    ),
    array(
        'query' => 'SELECT TABLE_NAME FROM information_schema.VIEWS'
            . ' WHERE TABLE_SCHEMA = \'pma_test\' AND TABLE_NAME = \'table1\'',
        'result' => array(),
    ),
    array(
        'query' => 'SELECT *, `TABLE_SCHEMA` AS `Db`, `TABLE_NAME` AS `Name`,'
            . ' `TABLE_TYPE` AS `TABLE_TYPE`, `ENGINE` AS `Engine`,'
            . ' `ENGINE` AS `Type`, `VERSION` AS `Version`,'
            . ' `ROW_FORMAT` AS `Row_format`, `TABLE_ROWS` AS `Rows`,'
            . ' `AVG_ROW_LENGTH` AS `Avg_row_length`,'
            . ' `DATA_LENGTH` AS `Data_length`,'
            . ' `MAX_DATA_LENGTH` AS `Max_data_length`,'
            . ' `INDEX_LENGTH` AS `Index_length`, `DATA_FREE` AS `Data_free`,'
            . ' `AUTO_INCREMENT` AS `Auto_increment`,'
            . ' `CREATE_TIME` AS `Create_time`, `UPDATE_TIME` AS `Update_time`,'
            . ' `CHECK_TIME` AS `Check_time`, `TABLE_COLLATION` AS `Collation`,'
            . ' `CHECKSUM` AS `Checksum`, `CREATE_OPTIONS` AS `Create_options`,'
            . ' `TABLE_COMMENT` AS `Comment`'
            . ' FROM `information_schema`.`TABLES` t'
            . ' WHERE BINARY `TABLE_SCHEMA` IN (\'pma_test\')'
            . ' AND t.`TABLE_NAME` = \'table1\' ORDER BY Name ASC',
        'columns' => array(
            'TABLE_CATALOG', 'TABLE_SCHEMA', 'TABLE_NAME', 'TABLE_TYPE', 'ENGINE',
            'VERSION', 'ROW_FORMAT', 'TABLE_ROWS', 'AVG_ROW_LENGTH', 'DATA_LENGTH',
            'MAX_DATA_LENGTH', 'INDEX_LENGTH', 'DATA_FREE', 'AUTO_INCREMENT',
            'CREATE_TIME', 'UPDATE_TIME', 'CHECK_TIME', 'TABLE_COLLATION',
            'CHECKSUM', 'CREATE_OPTIONS', 'TABLE_COMMENT', 'Db', 'Name',
            'TABLE_TYPE', 'Engine', 'Type', 'Version', 'Row_format', 'Rows',
            'Avg_row_length', 'Data_length', 'Max_data_length', 'Index_length',
            'Data_free', 'Auto_increment', 'Create_time', 'Update_time',
            'Check_time', 'Collation', 'Checksum', 'Create_options', 'Comment'
        ),
        'result' => array(
            array(
                'def', 'smash', 'issues_issue', 'BASE TABLE', 'InnoDB', '10',
                'Compact', '9136', '862', '7880704', '0', '1032192', '420478976',
                '155862', '2012-08-29 13:28:28', 'NULL', 'NULL', 'utf8_general_ci',
                'NULL', '', '', 'smash', 'issues_issue', 'BASE TABLE', 'InnoDB',
                'InnoDB', '10', 'Compact', '9136', '862', '7880704', '0', '1032192',
                '420478976', '155862', '2012-08-29 13:28:28', 'NULL', 'NULL',
                'utf8_general_ci', 'NULL'
            ),
        ),
    ),
    array(
        'query' => 'SELECT *, `TABLE_SCHEMA` AS `Db`, `TABLE_NAME` AS `Name`,'
            . ' `TABLE_TYPE` AS `TABLE_TYPE`, `ENGINE` AS `Engine`,'
            . ' `ENGINE` AS `Type`, `VERSION` AS `Version`,'
            . ' `ROW_FORMAT` AS `Row_format`, `TABLE_ROWS` AS `Rows`,'
            . ' `AVG_ROW_LENGTH` AS `Avg_row_length`,'
            . ' `DATA_LENGTH` AS `Data_length`,'
            . ' `MAX_DATA_LENGTH` AS `Max_data_length`,'
            . ' `INDEX_LENGTH` AS `Index_length`, `DATA_FREE` AS `Data_free`,'
            . ' `AUTO_INCREMENT` AS `Auto_increment`,'
            . ' `CREATE_TIME` AS `Create_time`, `UPDATE_TIME` AS `Update_time`,'
            . ' `CHECK_TIME` AS `Check_time`, `TABLE_COLLATION` AS `Collation`,'
            . ' `CHECKSUM` AS `Checksum`, `CREATE_OPTIONS` AS `Create_options`,'
            . ' `TABLE_COMMENT` AS `Comment`'
            . ' FROM `information_schema`.`TABLES` t'
            . ' WHERE `TABLE_SCHEMA` IN (\'pma_test\')'
            . ' AND t.`TABLE_NAME` = \'table1\' ORDER BY Name ASC',
        'columns' => array('TABLE_CATALOG', 'TABLE_SCHEMA', 'TABLE_NAME',
            'TABLE_TYPE', 'ENGINE', 'VERSION', 'ROW_FORMAT', 'TABLE_ROWS',
            'AVG_ROW_LENGTH', 'DATA_LENGTH', 'MAX_DATA_LENGTH',
            'INDEX_LENGTH', 'DATA_FREE', 'AUTO_INCREMENT', 'CREATE_TIME',
            'UPDATE_TIME', 'CHECK_TIME', 'TABLE_COLLATION', 'CHECKSUM',
            'CREATE_OPTIONS', 'TABLE_COMMENT', 'Db', 'Name', 'TABLE_TYPE',
            'Engine', 'Type', 'Version', 'Row_format', 'Rows',
            'Avg_row_length', 'Data_length', 'Max_data_length',
            'Index_length', 'Data_free', 'Auto_increment', 'Create_time',
            'Update_time', 'Check_time', 'Collation', 'Checksum',
            'Create_options', 'Comment'),
        'result' => array(
            array('def', 'smash', 'issues_issue', 'BASE TABLE', 'InnoDB', '10',
                'Compact', '9136', '862', '7880704', '0', '1032192',
                '420478976', '155862', '2012-08-29 13:28:28', 'NULL', 'NULL',
                'utf8_general_ci', 'NULL', '', '', 'smash', 'issues_issue',
                'BASE TABLE', 'InnoDB', 'InnoDB', '10', 'Compact', '9136',
                '862', '7880704', '0', '1032192', '420478976', '155862',
                '2012-08-29 13:28:28', 'NULL', 'NULL', 'utf8_general_ci',
                'NULL'),
        ),
    ),
    array(
        'query' => 'SELECT COUNT(*) FROM `pma_test`.`table1`',
        'result' => array(array(0)),
    ),
    array(
        'query' => 'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.'
            . '`USER_PRIVILEGES`'
            . ' WHERE GRANTEE=\'\'\'pma_test\'\'@\'\'localhost\'\'\''
            . ' AND PRIVILEGE_TYPE=\'TRIGGER\'',
        'result' => array(),
    ),
    array(
        'query' => 'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.'
            . '`SCHEMA_PRIVILEGES`'
            . ' WHERE GRANTEE=\'\'\'pma_test\'\'@\'\'localhost\'\'\''
            . ' AND PRIVILEGE_TYPE=\'TRIGGER\' AND \'pma_test\''
            . ' LIKE `TABLE_SCHEMA`',
        'result' => array(),
    ),
    array(
        'query' => 'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.'
            . '`TABLE_PRIVILEGES`'
            . ' WHERE GRANTEE=\'\'\'pma_test\'\'@\'\'localhost\'\'\''
            . ' AND PRIVILEGE_TYPE=\'TRIGGER\' AND \'pma_test\''
            . ' LIKE `TABLE_SCHEMA` AND TABLE_NAME=\'table1\'',
        'result' => array(),
    ),
    array(
        'query' => 'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.'
            . '`USER_PRIVILEGES`'
            . ' WHERE GRANTEE=\'\'\'pma_test\'\'@\'\'localhost\'\'\''
            . ' AND PRIVILEGE_TYPE=\'EVENT\'',
        'result' => array(),
    ),
    array(
        'query' => 'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.'
            . '`SCHEMA_PRIVILEGES`'
            . ' WHERE GRANTEE=\'\'\'pma_test\'\'@\'\'localhost\'\'\''
            . ' AND PRIVILEGE_TYPE=\'EVENT\' AND \'pma_test\''
            . ' LIKE `TABLE_SCHEMA`',
        'result' => array(),
    ),
    array(
        'query' => 'SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`.'
            . '`TABLE_PRIVILEGES`'
            . ' WHERE GRANTEE=\'\'\'pma_test\'\'@\'\'localhost\'\'\''
            . ' AND PRIVILEGE_TYPE=\'EVENT\''
            . ' AND TABLE_SCHEMA=\'pma\\\\_test\' AND TABLE_NAME=\'table1\'',
        'result' => array(),
    ),
    array(
        'query' => 'RENAME TABLE `pma_test`.`table1` TO `pma_test`.`table3`;',
        'result' => array(),
    ),
    array(
        'query' => 'SELECT TRIGGER_SCHEMA, TRIGGER_NAME, EVENT_MANIPULATION,'
            . ' EVENT_OBJECT_TABLE, ACTION_TIMING, ACTION_STATEMENT, '
            . 'EVENT_OBJECT_SCHEMA, EVENT_OBJECT_TABLE, DEFINER'
            . ' FROM information_schema.TRIGGERS'
            . ' WHERE TRIGGER_SCHEMA= \'pma_test\''
            . ' AND EVENT_OBJECT_TABLE = \'table1\';',
        'result' => array(),
    ),
    array(
        'query' => 'SHOW TABLES FROM `pma`;',
        'result' => array(),
    ),
    array(
        'query' => "SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`."
            . "`SCHEMA_PRIVILEGES` WHERE GRANTEE='''pma_test''@''localhost'''"
            . " AND PRIVILEGE_TYPE='EVENT' AND TABLE_SCHEMA='pma'",
        'result' => array(),
    ),
    array(
        'query' => "SELECT `PRIVILEGE_TYPE` FROM `INFORMATION_SCHEMA`."
            . "`SCHEMA_PRIVILEGES` WHERE GRANTEE='''pma_test''@''localhost'''"
            . " AND PRIVILEGE_TYPE='TRIGGER' AND TABLE_SCHEMA='pma'",
        'result' => array(),
    ),
    array(
        'query' => 'SELECT DEFAULT_COLLATION_NAME FROM information_schema.SCHEMATA'
        . ' WHERE SCHEMA_NAME = \'pma_test\' LIMIT 1',
        'columns' => array('DEFAULT_COLLATION_NAME'),
        'result' => array(
            array('utf8_general_ci')
        )
    ),
    array(
        'query' => 'SELECT DEFAULT_COLLATION_NAME FROM data_dictionary.SCHEMAS'
            . ' WHERE SCHEMA_NAME = \'pma_test\' LIMIT 1',
        'columns' => array('DEFAULT_COLLATION_NAME'),
        'result' => array(
            array('utf8_general_ci_pma_drizzle')
        )
    ),
    array(
        'query' => 'SHOW VARIABLES LIKE \'collation_database\'',
        'columns' => array('variable_name', 'variable_value'),
        'result' => array(
            array('foo', 'bar'),
        )
    ),
    array(
        'query' => "SHOW TABLES FROM `phpmyadmin`",
        'result' => array(),
    ),
    array(
        'query' => "SELECT tracking_active FROM pma_table_tracking" .
            " WHERE db_name = 'pma_test_db'" .
            " AND table_name = 'pma_test_table'" .
            " ORDER BY version DESC",
        'columns' => array('tracking_active'),
        'result' => array(
                array(1)
            )
    ),
    array(
        'query' => "SELECT tracking_active FROM pma_table_tracking" .
            " WHERE db_name = 'pma_test_db'" .
            " AND table_name = 'pma_test_table2'" .
            " ORDER BY version DESC",
        'result' => array()
    ),
    array(
        'query' => "SHOW SLAVE STATUS",
        'result' => array(
            array(
                'Slave_IO_State' => 'running',
                'Master_Host' => 'locahost',
                'Master_User' => 'Master_User',
                'Master_Port' => '1002',
                'Connect_Retry' => 'Connect_Retry',
                'Master_Log_File' => 'Master_Log_File',
                'Read_Master_Log_Pos' => 'Read_Master_Log_Pos',
                'Relay_Log_File' => 'Relay_Log_File',
                'Relay_Log_Pos' => 'Relay_Log_Pos',
                'Relay_Master_Log_File' =>  'Relay_Master_Log_File',
                'Slave_IO_Running' => 'NO',
                'Slave_SQL_Running' => 'NO',
                'Replicate_Do_DB' => 'Replicate_Do_DB',
                'Replicate_Ignore_DB' => 'Replicate_Ignore_DB',
                'Replicate_Do_Table' => 'Replicate_Do_Table',
                'Replicate_Ignore_Table' => 'Replicate_Ignore_Table',
                'Replicate_Wild_Do_Table' => 'Replicate_Wild_Do_Table',
                'Replicate_Wild_Ignore_Table' => 'Replicate_Wild_Ignore_Table',
                'Last_Errno' => 'Last_Errno',
                'Last_Error' => 'Last_Error',
                'Skip_Counter' =>  'Skip_Counter',
                'Exec_Master_Log_Pos' => 'Exec_Master_Log_Pos',
                'Relay_Log_Space' => 'Relay_Log_Space',
                'Until_Condition' => 'Until_Condition',
                'Until_Log_File' => 'Until_Log_File',
                'Until_Log_Pos' => 'Until_Log_Pos',
                'Master_SSL_Allowed' => 'Master_SSL_Allowed',
                'Master_SSL_CA_File' => 'Master_SSL_CA_File',
                'Master_SSL_CA_Path' => 'Master_SSL_CA_Path',
                'Master_SSL_Cert' => 'Master_SSL_Cert',
                'Master_SSL_Cipher' => 'Master_SSL_Cipher',
                'Master_SSL_Key' => 'Master_SSL_Key',
                'Seconds_Behind_Master' => 'Seconds_Behind_Master',
            )
        )
    ),
    array(
        'query' => "SHOW MASTER STATUS",
        'result' => array(
            array(
                "File" => "master-bin.000030",
                "Position" => "107",
                "Binlog_Do_DB" => "Binlog_Do_DB",
                "Binlog_Ignore_DB" => "Binlog_Ignore_DB",
            )
        )
    ),
    array(
        'query' => "SHOW GRANTS",
        'result' => array()
    )
);
/**
 * Current database.
 */
$GLOBALS['dummy_db'] = '';

/* Some basic setup for dummy driver */
$GLOBALS['userlink'] = 1;
$GLOBALS['controllink'] = 2;
$GLOBALS['cfg']['DBG']['sql'] = false;
if (! defined('PMA_DRIZZLE')) {
    define('PMA_DRIZZLE', 0);
}

/**
 * Fake database driver for testing purposes
 *
 * It has hardcoded results for given queries what makes easy to use it
 * in testsuite. Feel free to include other queries which your test will
 * need.
 *
 * @package    PhpMyAdmin-DBI
 * @subpackage Dummy
 */
class PMA_DBI_Dummy implements PMA_DBI_Extension
{
    /**
     * connects to the database server
     *
     * @param string $user                 mysql user name
     * @param string $password             mysql user password
     * @param bool   $is_controluser       whether this is a control user connection
     * @param array  $server               host/port/socket/persistent
     * @param bool   $auxiliary_connection (when true, don't go back to login if
     *                                     connection fails)
     *
     * @return mixed false on error or a mysqli object on success
     */
    public function connect(
        $user, $password, $is_controluser = false, $server = null,
        $auxiliary_connection = false
    ) {
        return true;
    }

    /**
     * selects given database
     *
     * @param string   $dbname name of db to select
     * @param resource $link   mysql link resource
     *
     * @return bool
     */
    public function selectDb($dbname, $link = null)
    {
        $GLOBALS['dummy_db'] = $dbname;
        return true;
    }

    /**
     * runs a query and returns the result
     *
     * @param string   $query   query to run
     * @param resource $link    mysql link resource
     * @param int      $options query options
     *
     * @return mixed
     */
    public function realQuery($query, $link = null, $options = 0)
    {
        $query = trim(preg_replace('/  */', ' ', str_replace("\n", ' ', $query)));
        for ($i = 0, $nb = count($GLOBALS['dummy_queries']); $i < $nb; $i++) {
            if ($GLOBALS['dummy_queries'][$i]['query'] != $query) {
                continue;
            }

            $GLOBALS['dummy_queries'][$i]['pos'] = 0;
            if (!is_array($GLOBALS['dummy_queries'][$i]['result'])) {
                return false;
            }

            return $i;
        }
        echo "Not supported query: $query\n";
        return false;
    }

    /**
     * Run the multi query and output the results
     *
     * @param object $link  connection object
     * @param string $query multi query statement to execute
     *
     * @return result collection | boolean(false)
     */
    public function realMultiQuery($link, $query)
    {
        return false;
    }

    /**
     * returns result data from $result
     *
     * @param resource $result result  MySQL result
     *
     * @return array
     */
    public function fetchAny($result)
    {
        $query_data = $GLOBALS['dummy_queries'][$result];
        if ($query_data['pos'] >= count($query_data['result'])) {
            return false;
        }
        $ret = $query_data['result'][$query_data['pos']];
        $GLOBALS['dummy_queries'][$result]['pos'] += 1;
        return $ret;
    }

    /**
     * returns array of rows with associative and numeric keys from $result
     *
     * @param resource $result result  MySQL result
     *
     * @return array
     */
    public function fetchArray($result)
    {
        $data = $this->fetchAny($result);
        if (!is_array($data)
            || !isset($GLOBALS['dummy_queries'][$result]['columns'])
        ) {
            return $data;
        }

        foreach ($data as $key => $val) {
            $data[$GLOBALS['dummy_queries'][$result]['columns'][$key]] = $val;
        }
        return $data;
    }

    /**
     * returns array of rows with associative keys from $result
     *
     * @param resource $result MySQL result
     *
     * @return array
     */
    public function fetchAssoc($result)
    {
        $data = $this->fetchAny($result);
        if (!is_array($data)
            || !isset($GLOBALS['dummy_queries'][$result]['columns'])
        ) {
            return $data;
        }

        $ret = array();
        foreach ($data as $key => $val) {
            $ret[$GLOBALS['dummy_queries'][$result]['columns'][$key]] = $val;
        }
        return $ret;
    }

    /**
     * returns array of rows with numeric keys from $result
     *
     * @param resource $result MySQL result
     *
     * @return array
     */
    public function fetchRow($result)
    {
        $data = $this->fetchAny($result);
        return $data;
    }

    /**
     * Adjusts the result pointer to an arbitrary row in the result
     *
     * @param resource $result database result
     * @param integer  $offset offset to seek
     *
     * @return bool true on success, false on failure
     */
    public function dataSeek($result, $offset)
    {
        if ($offset > count($GLOBALS['dummy_queries'][$result]['result'])) {
            return false;
        }
        $GLOBALS['dummy_queries'][$result]['pos'] = $offset;
        return true;
    }

    /**
     * Frees memory associated with the result
     *
     * @param resource $result database result
     *
     * @return void
     */
    public function freeResult($result)
    {
        return;
    }

    /**
     * Check if there are any more query results from a multi query
     *
     * @param object $link the connection object
     *
     * @return bool false
     */
    public function moreResults($link = null)
    {
        return false;
    }

    /**
     * Prepare next result from multi_query
     *
     * @param object $link the connection object
     *
     * @return boolean false
     */
    public function nextResult($link = null)
    {
        return false;
    }

    /**
     * Store the result returned from multi query
     *
     * @return mixed false when empty results / result set when not empty
     */
    public function storeResult()
    {
        return false;
    }

    /**
     * Returns a string representing the type of connection used
     *
     * @param object $link mysql link
     *
     * @return string type of connection used
     */
    public function getHostInfo($link = null)
    {
        return '';
    }

    /**
     * Returns the version of the MySQL protocol used
     *
     * @param object $link mysql link
     *
     * @return integer version of the MySQL protocol used
     */
    public function getProtoInfo($link = null)
    {
        return -1;
    }

    /**
     * returns a string that represents the client library version
     *
     * @return string MySQL client library version
     */
    public function getClientInfo()
    {
        return '';
    }

    /**
     * returns last error message or false if no errors occurred
     *
     * @param object $link connection link
     *
     * @return string|bool $error or false
     */
    public function getError($link = null)
    {
        return false;
    }

    /**
     * returns the number of rows returned by last query
     *
     * @param resource $result MySQL result
     *
     * @return string|int
     */
    public function numRows($result)
    {
        if (is_bool($result)) {
            return 0;
        }

        return count($GLOBALS['dummy_queries'][$result]['result']);
    }

    /**
     * returns last inserted auto_increment id for given $link
     * or $GLOBALS['userlink']
     *
     * @param object $link the connection object
     *
     * @return string|int
     */
    public function insertId($link = null)
    {
        return -1;
    }

    /**
     * returns the number of rows affected by last query
     *
     * @param resource $link           the mysql object
     * @param bool     $get_from_cache whether to retrieve from cache
     *
     * @return string|int
     */
    public function affectedRows($link = null, $get_from_cache = true)
    {
        return 0;
    }

    /**
     * returns metainfo for fields in $result
     *
     * @param object $result result set identifier
     *
     * @return array meta info for fields in $result
     */
    public function getFieldsMeta($result)
    {
        return array();
    }

    /**
     * return number of fields in given $result
     *
     * @param resource $result MySQL result
     *
     * @return int  field count
     */
    public function numFields($result)
    {
        if (!isset($GLOBALS['dummy_queries'][$result]['columns'])) {
            return 0;
        }

        return count($GLOBALS['dummy_queries'][$result]['columns']);
    }

    /**
     * returns the length of the given field $i in $result
     *
     * @param object $result result set identifier
     * @param int    $i      field
     *
     * @return int length of field
     */
    public function fieldLen($result, $i)
    {
        return -1;
    }

    /**
     * returns name of $i. field in $result
     *
     * @param object $result result set identifier
     * @param int    $i      field
     *
     * @return string name of $i. field in $result
     */
    public function fieldName($result, $i)
    {
        return '';
    }

    /**
     * returns concatenated string of human readable field flags
     *
     * @param object $result result set identifier
     * @param int    $i      field
     *
     * @return string field flags
     */
    public function fieldFlags($result, $i)
    {
        return '';
    }
}
?>