relation.lib.php

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 * @uses    PMA_DBI_fetch_value()
 * @param   string   $username  the username
 * @access  public
 */
function PMA_purgeHistory($username)
{
    $cfgRelation = PMA_getRelationsParam();
    if (! $GLOBALS['cfg']['QueryHistoryDB'] || ! $cfgRelation['historywork']) {
        return;
    }

    if (! $cfgRelation['historywork']) {
        return;
    }

    $search_query = '
         SELECT `timevalue`
           FROM ' . PMA_backquote($cfgRelation['db']) . '.' . PMA_backquote($cfgRelation['history']) . '
          WHERE `username` = \'' . PMA_sqlAddSlashes($username) . '\'
       ORDER BY `timevalue` DESC
          LIMIT ' . $GLOBALS['cfg']['QueryHistoryMax'] . ', 1';

    if ($max_time = PMA_DBI_fetch_value($search_query, 0, 0, $GLOBALS['controllink'])) {
        PMA_query_as_cu('
             DELETE FROM
                    ' . PMA_backquote($cfgRelation['db']) . '.' . PMA_backquote($cfgRelation['history']) . '
              WHERE `username` = \'' . PMA_sqlAddSlashes($username) . '\'
                AND `timevalue` <= \'' . $max_time . '\'');
    }
} // end of 'PMA_purgeHistory()' function

/**
 * Prepares the dropdown for one mode
 *
 * @uses    $cfg['LimitChars']
 * @uses    $cfg['NaturalOrder']
 * @uses    PMA_strlen()
 * @uses    htmlspecialchars()
 * @uses    substr()
 * @uses    uksort()
 * @uses    ksort()
 * @uses    natcasesort()
 * @uses    asort()
 * @param   array    $foreign   the keys and values for foreigns
 * @param   string   $data      the current data of the dropdown
 * @param   string   $mode      the needed mode
 *
 * @return  array   the <option value=""><option>s
 *
 * @access  protected
 */
function PMA__foreignDropdownBuild($foreign, $data, $mode)
{
    $reloptions = array();

    if ($mode == 'id-content') {
        // sort for id-content
        if ($GLOBALS['cfg']['NaturalOrder']) {
            uksort($foreign, 'strnatcasecmp');
        } else {
            ksort($foreign);
        }
    } elseif ($mode == 'content-id') {
        // sort for content-id
        if ($GLOBALS['cfg']['NaturalOrder']) {
            natcasesort($foreign);
        } else {
            asort($foreign);
        }
    }

    foreach ($foreign as $key => $value) {

        if (PMA_strlen($value) <= $GLOBALS['cfg']['LimitChars']) {
            $vtitle = '';
            $value  = htmlspecialchars($value);
        } else {
            $vtitle  = htmlspecialchars($value);
            $value  = htmlspecialchars(substr($value, 0, $GLOBALS['cfg']['LimitChars']) . '...');
        }

        $reloption = '                <option value="' . htmlspecialchars($key) . '"';
        if ($vtitle != '') {
            $reloption .= ' title="' . $vtitle . '"';
        }

        if ((string) $key == (string) $data) {
           $reloption .= ' selected="selected"';
        }

        if ($mode == 'content-id') {
            $reloptions[] = $reloption . '>' . $value . '&nbsp;-&nbsp;' . htmlspecialchars($key) .  '</option>' . "\n";
        } else {
            $reloptions[] = $reloption . '>' . htmlspecialchars($key) .  '&nbsp;-&nbsp;' . $value . '</option>' . "\n";
        }
    } // end foreach

    return $reloptions;
} // end of 'PMA__foreignDropdownBuild' function

/**
 * Outputs dropdown with values of foreign fields
 *
 * @uses    $cfg['ForeignKeyMaxLimit']
 * @uses    $cfg['ForeignKeyDropdownOrder']
 * @uses    PMA__foreignDropdownBuild()
 * @uses    PMA_isValid()
 * @uses    implode()
 * @param   array    array of the displayed row
 * @param   string   the foreign field
 * @param   string   the foreign field to display
 * @param   string   the current data of the dropdown (field in row)
 * @return  string   the <option value=""><option>s
 * @access  public
 */
function PMA_foreignDropdown($disp_row, $foreign_field, $foreign_display, $data,
    $max = null)
{
    if (null === $max) {
        $max = $GLOBALS['cfg']['ForeignKeyMaxLimit'];
    }

    $foreign = array();

    // collect the data
    foreach ($disp_row as $relrow) {
        $key   = $relrow[$foreign_field];

        // if the display field has been defined for this foreign table
        if ($foreign_display) {
            $value  = $relrow[$foreign_display];
        } else {
            $value = '';
        } // end if ($foreign_display)

        $foreign[$key] = $value;
    } // end foreach

    // put the dropdown sections in correct order
    $top = array();
    $bot = array();
    if (PMA_isValid($GLOBALS['cfg']['ForeignKeyDropdownOrder'], 'array')) {
        if (PMA_isValid($GLOBALS['cfg']['ForeignKeyDropdownOrder'][0])) {
            $top = PMA__foreignDropdownBuild($foreign, $data,
                $GLOBALS['cfg']['ForeignKeyDropdownOrder'][0]);
        }
        if (PMA_isValid($GLOBALS['cfg']['ForeignKeyDropdownOrder'][1])) {
            $bot = PMA__foreignDropdownBuild($foreign, $data,
                $GLOBALS['cfg']['ForeignKeyDropdownOrder'][1]);
        }
    } else {
        $top = PMA__foreignDropdownBuild($foreign, $data, 'id-content');
        $bot = PMA__foreignDropdownBuild($foreign, $data, 'content-id');
    }

    // beginning of dropdown
    $ret = '<option value="">&nbsp;</option>' . "\n";

    $top_count = count($top);
    if ($max == -1 || $top_count < $max) {
        $ret .= implode('', $top);
        if ($top_count > 0) {
            $ret .= '                <option value="">&nbsp;</option>' . "\n";
            $ret .= '                <option value="">&nbsp;</option>' . "\n";
        }
    }
    $ret .= implode('', $bot);

    return $ret;
} // end of 'PMA_foreignDropdown()' function

/**
 * Gets foreign keys in preparation for a drop-down selector
 * Thanks to <[e-mail]>
 *
 * @uses    PMA_Table::countRecords()
 * @uses    PMA_backquote()
 * @uses    PMA_getDisplayField()
 * @uses    PMA_sqlAddslashes()
 * @uses    PMA_DBI_fetch_value()
 * @uses    PMA_DBI_free_result()
 * @uses    PMA_DBI_query()
 * @uses    PMA_DBI_num_rows()
 * @uses    PMA_DBI_fetch_assoc()
 * @param   array    array of the foreign keys
 * @param   string   the foreign field name
 * @param   bool     whether to override the total
 * @param   string   a possible filter
 * @param   string   a possible LIMIT clause
 * @return  array    data about the foreign keys
 * @access  public
 */

function PMA_getForeignData($foreigners, $field, $override_total, $foreign_filter, $foreign_limit)
{
    // we always show the foreign field in the drop-down; if a display
    // field is defined, we show it besides the foreign field
    $foreign_link = false;
    if ($foreigners && isset($foreigners[$field])) {
        $foreigner       = $foreigners[$field];
        $foreign_db      = $foreigner['foreign_db'];
        $foreign_table   = $foreigner['foreign_table'];
        $foreign_field   = $foreigner['foreign_field'];

        // Count number of rows in the foreign table. Currently we do
        // not use a drop-down if more than 200 rows in the foreign table,
        // for speed reasons and because we need a better interface for this.
        //
        // We could also do the SELECT anyway, with a LIMIT, and ensure that
        // the current value of the field is one of the choices.

        $the_total   = PMA_Table::countRecords($foreign_db, $foreign_table, TRUE);

        if ($override_total == true || $the_total < $GLOBALS['cfg']['ForeignKeyMaxLimit']) {
            // foreign_display can be FALSE if no display field defined:
            $foreign_display = PMA_getDisplayField($foreign_db, $foreign_table);

            $f_query_main = 'SELECT ' . PMA_backquote($foreign_field)
                        . (($foreign_display == FALSE) ? '' : ', ' . PMA_backquote($foreign_display));
            $f_query_from = ' FROM ' . PMA_backquote($foreign_db) . '.' . PMA_backquote($foreign_table);
            $f_query_filter = empty($foreign_filter) ? '' : ' WHERE ' . PMA_backquote($foreign_field)
                            . ' LIKE "%' . PMA_sqlAddslashes($foreign_filter, TRUE) . '%"'
                            . (($foreign_display == FALSE) ? '' : ' OR ' . PMA_backquote($foreign_display)
                                . ' LIKE "%' . PMA_sqlAddslashes($foreign_filter, TRUE) . '%"'
                                );
            $f_query_order = ($foreign_display == FALSE) ? '' :' ORDER BY ' . PMA_backquote($foreign_table) . '.' . PMA_backquote($foreign_display);
            $f_query_limit = isset($foreign_limit) ? $foreign_limit : '';

            if (!empty($foreign_filter)) {
                $res = PMA_DBI_query('SELECT COUNT(*)' . $f_query_from . $f_query_filter);
                if ($res) {
                    $the_total = PMA_DBI_fetch_value($res);
                    @PMA_DBI_free_result($res);
                } else {
                    $the_total = 0;
                }
            }

            $disp  = PMA_DBI_query($f_query_main . $f_query_from . $f_query_filter . $f_query_order . $f_query_limit);
            if ($disp && PMA_DBI_num_rows($disp) > 0) {
                // If a resultset has been created, pre-cache it in the $disp_row array
                // This helps us from not needing to use mysql_data_seek by accessing a pre-cached
                // PHP array. Usually those resultsets are not that big, so a performance hit should
                // not be expected.
                $disp_row = array();
                while ($single_disp_row = @PMA_DBI_fetch_assoc($disp)) {
                    $disp_row[] = $single_disp_row;
                }
                @PMA_DBI_free_result($disp);
            }
        } else {
            $disp_row = null;
            $foreign_link = true;
        }
    }  // end if $foreigners

    $foreignData['foreign_link'] = $foreign_link;
    $foreignData['the_total'] = isset($the_total) ? $the_total : null;
    $foreignData['foreign_display'] = isset($foreign_display) ? $foreign_display : null;
    $foreignData['disp_row'] = isset($disp_row) ? $disp_row : null;
    $foreignData['foreign_field'] = isset($foreign_field) ? $foreign_field : null;
    return $foreignData;
} // end of 'PMA_getForeignData()' function

/**
 * Finds all related tables
 *
 * @uses    $GLOBALS['controllink']
 * @uses    $GLOBALS['cfgRelation']
 * @uses    $GLOBALS['db']
 * @param   string   whether to go from master to foreign or vice versa
 * @return  boolean  always TRUE
 * @global  array    $tab_left the list of tables that we still couldn't connect
 * @global  array    $tab_know the list of allready connected tables
 * @global  string   $fromclause
 *
 * @access  private
 */
function PMA_getRelatives($from)
{
    global $tab_left, $tab_know, $fromclause;

    if ($from == 'master') {
        $to    = 'foreign';
    } else {
        $to    = 'master';
    }
    $in_know = '(\'' . implode('\', \'', $tab_know) . '\')';
    $in_left = '(\'' . implode('\', \'', $tab_left) . '\')';

    $rel_query = 'SELECT *'
               . '  FROM ' . PMA_backquote($GLOBALS['cfgRelation']['db'])
               .       '.' . PMA_backquote($GLOBALS['cfgRelation']['relation'])
               . ' WHERE ' . $from . '_db = \'' . PMA_sqlAddslashes($GLOBALS['db']) . '\''
               . '   AND ' . $to   . '_db = \'' . PMA_sqlAddslashes($GLOBALS['db']) . '\''
               . '   AND ' . $from . '_table IN ' . $in_know
               . '   AND ' . $to   . '_table IN ' . $in_left;
    $relations = @PMA_DBI_query($rel_query, $GLOBALS['controllink']);
    while ($row = PMA_DBI_fetch_assoc($relations)) {
        $found_table                = $row[$to . '_table'];
        if (isset($tab_left[$found_table])) {
            $fromclause
                .= "\n" . ' LEFT JOIN '
                . PMA_backquote($GLOBALS['db']) . '.' . PMA_backquote($row[$to . '_table']) . ' ON '
                . PMA_backquote($row[$from . '_table']) . '.'
                . PMA_backquote($row[$from . '_field']) . ' = '
                . PMA_backquote($row[$to . '_table']) . '.'
                . PMA_backquote($row[$to . '_field']) . ' ';
            $tab_know[$found_table] = $found_table;
            unset($tab_left[$found_table]);
        }
    } // end while

    return true;
} // end of the "PMA_getRelatives()" function

/**
 * Rename a field in relation tables
 * 
 * usually called after a field in a table was renamed in tbl_alter.php
 *
 * @uses    PMA_getRelationsParam()
 * @uses    PMA_backquote()
 * @uses    PMA_sqlAddslashes()
 * @uses    PMA_query_as_cu()
 * @param string $db
 * @param string $table
 * @param string $field
 * @param string $new_name
 */
function PMA_REL_renameField($db, $table, $field, $new_name)
{
    $cfgRelation = PMA_getRelationsParam();
    
    if ($cfgRelation['displaywork']) {
        $table_query = 'UPDATE ' . PMA_backquote($cfgRelation['db']) . '.' . PMA_backquote($cfgRelation['table_info'])
                      . '   SET display_field = \'' . PMA_sqlAddslashes($new_name) . '\''
                      . ' WHERE db_name       = \'' . PMA_sqlAddslashes($db) . '\''
                      . '   AND table_name    = \'' . PMA_sqlAddslashes($table) . '\''
                      . '   AND display_field = \'' . PMA_sqlAddslashes($field) . '\'';
        PMA_query_as_cu($table_query);
    }

    if ($cfgRelation['relwork']) {
        $table_query = 'UPDATE ' . PMA_backquote($cfgRelation['db']) . '.' . PMA_backquote($cfgRelation['relation'])
                      . '   SET master_field = \'' . PMA_sqlAddslashes($new_name) . '\''
                      . ' WHERE master_db    = \'' . PMA_sqlAddslashes($db) . '\''
                      . '   AND master_table = \'' . PMA_sqlAddslashes($table) . '\''
                      . '   AND master_field = \'' . PMA_sqlAddslashes($field) . '\'';
        PMA_query_as_cu($table_query);

        $table_query = 'UPDATE ' . PMA_backquote($cfgRelation['db']) . '.' . PMA_backquote($cfgRelation['relation'])
                      . '   SET foreign_field = \'' . PMA_sqlAddslashes($new_name) . '\''
                      . ' WHERE foreign_db    = \'' . PMA_sqlAddslashes($db) . '\''
                      . '   AND foreign_table = \'' . PMA_sqlAddslashes($table) . '\''
                      . '   AND foreign_field = \'' . PMA_sqlAddslashes($field) . '\'';
        PMA_query_as_cu($table_query);
    } // end if relwork
}

/**
 * Create a PDF page
 * 
 * @uses    $GLOBALS['strNoDescription']
 * @uses    PMA_backquote()
 * @uses    $GLOBALS['cfgRelation']['db']
 * @uses    PMA_sqlAddslashes()
 * @uses    PMA_query_as_cu()
 * @uses    PMA_DBI_insert_id()
 * @uses    $GLOBALS['controllink']
 * @param string    $newpage
 * @param array     $cfgRelation
 * @param string    $db
 * @param string    $query_default_option
 * @return string   $pdf_page_number 
 */
function PMA_REL_create_page($newpage, $cfgRelation, $db, $query_default_option) {
    if (! isset($newpage) || $newpage == '') {
        $newpage = $GLOBALS['strNoDescription'];
    }
    $ins_query   = 'INSERT INTO ' . PMA_backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_backquote($cfgRelation['pdf_pages'])
                 . ' (db_name, page_descr)'
                 . ' VALUES (\'' . PMA_sqlAddslashes($db) . '\', \'' . PMA_sqlAddslashes($newpage) . '\')';
    PMA_query_as_cu($ins_query, FALSE, $query_default_option);
    return PMA_DBI_insert_id(isset($GLOBALS['controllink']) ? $GLOBALS['controllink'] : '');
}
?>