db_operations.php

一个用PHP编写的

<?php
/* $Id: db_operations.php 9696 2006-11-13 08:30:25Z nijel $ */
// vim: expandtab sw=4 ts=4 sts=4:

/**
 * handles miscellaneous db operations:
 *  - move/rename
 *  - copy
 *  - changing collation
 *  - changing comment
 *  - adding tables
 *  - viewing PDF schemas
 */

/**
 * requirements
 */
require_once './libraries/common.lib.php';
require_once './libraries/Table.class.php';
require_once './libraries/mysql_charsets.lib.php';

/**
 * Rename/move or copy database
 */
if (isset($db) &&
    ((isset($db_rename) && $db_rename == 'true') ||
    (isset($db_copy) && $db_copy == 'true'))) {

    if (isset($db_rename) && $db_rename == 'true') {
        $move = true;
    } else {
        $move = false;
    }

    if (!isset($newname) || !strlen($newname)) {
        $message = $strDatabaseEmpty;
    } else {
        $sql_query = ''; // in case target db exists
        if ($move ||
           (isset($create_database_before_copying) && $create_database_before_copying)) {
            $local_query = 'CREATE DATABASE ' . PMA_backquote($newname);
            if (isset($db_collation)) {
                $local_query .= ' DEFAULT' . PMA_generateCharsetQueryPart($db_collation);
            }
            $local_query .= ';';
            $sql_query = $local_query;
            PMA_DBI_query($local_query);
            // rebuild the database list because PMA_Table::moveCopy
            // checks in this list if the target db exists
            $GLOBALS['PMA_List_Database']->build();
        }

        if (isset($GLOBALS['add_constraints'])) {
            $GLOBALS['sql_constraints_query_full_db'] = '';
        }

        $tables_full = PMA_DBI_get_tables_full($db);
        $views = array();
        foreach ($tables_full as $table => $tmp) {
            // to be able to rename a db containing views, we
            // first collect in $views all the views we find and we
            // will handle them after the tables
            /**
             * @todo support a view of a view
             */
            if (PMA_Table::isView($db, $table)) {
                $views[] = $table;
                continue;
            }

            $back = $sql_query;
            $sql_query = '';

            // value of $what for this table only
            $this_what = $what;

            if (!isset($tables_full[$table]['Engine'])) {
                $tables_full[$table]['Engine'] = $tables_full[$table]['Type'];
            }
            // do not copy the data from a Merge table
            // note: on the calling FORM, 'data' means 'structure and data'
            if ($tables_full[$table]['Engine'] == 'MRG_MyISAM') {
                if ($this_what == 'data') {
                    $this_what = 'structure';
                }
                if ($this_what == 'dataonly') {
                    $this_what = 'nocopy';
                }
            }

            if ($this_what != 'nocopy') {
                PMA_Table::moveCopy($db, $table, $newname, $table,
                    isset($this_what) ? $this_what : 'data', $move, 'db_copy');
                if (isset($GLOBALS['add_constraints'])) {
                    $GLOBALS['sql_constraints_query_full_db'] .= $GLOBALS['sql_constraints_query'];
                    unset($GLOBALS['sql_constraints_query']);
                }
            }

            $sql_query = $back . $sql_query;
        } // end (foreach)
        unset($table);

        // handle the views
        foreach ($views as $view) {
            PMA_Table::moveCopy($db, $view, $newname, $view,
                'structure', $move, 'db_copy');
        }
        unset($view, $views);

        // now that all tables exist, create all the accumulated constraints
        if (isset($GLOBALS['add_constraints'])) {
            /**
             * @todo this works with mysqli but not with mysql, because
             * mysql extension does not accept more than one statement; maybe
             * interface with the sql import plugin that handles statement delimiter
             */
            PMA_DBI_query($GLOBALS['sql_constraints_query_full_db']);

            // and prepare to display them
            $GLOBALS['sql_query'] .= "\n" . $GLOBALS['sql_constraints_query_full_db'];
            unset($GLOBALS['sql_constraints_query_full_db']);
        }

        // Duplicate the bookmarks for this db (done once for each db)
        if ($db != $newname) {
            $get_fields = array('user', 'label', 'query');
            $where_fields = array('dbase' => $db);
            $new_fields = array('dbase' => $newname);
            PMA_Table::duplicateInfo('bookmarkwork', 'bookmark', $get_fields,
                $where_fields, $new_fields);
        }

        if ($move) {
            // cleanup pmadb stuff for this db
            require_once './libraries/relation_cleanup.lib.php';
            PMA_relationsCleanupDatabase($db);

            $local_query = 'DROP DATABASE ' . PMA_backquote($db) . ';';
            $sql_query .= "\n" . $local_query;
            PMA_DBI_query($local_query);
            $message    = sprintf($strRenameDatabaseOK, htmlspecialchars($db),
                htmlspecialchars($newname));
        } else {
            $message    = sprintf($strCopyDatabaseOK, htmlspecialchars($db),
                htmlspecialchars($newname));
        }
        $reload     = true;

        /* Change database to be used */
        if ($move) {
            $db         = $newname;
        } else {
            if (isset($switch_to_new) && $switch_to_new == 'true') {
                PMA_setCookie('pma_switch_to_new', 'true');
                $db         = $newname;
            } else {
                PMA_setCookie('pma_switch_to_new', '');
            }
        }
    }
}
/**
 * Settings for relations stuff
 */

require_once './libraries/relation.lib.php';
$cfgRelation = PMA_getRelationsParam();

/**
 * Check if comments were updated
 * (must be done before displaying the menu tabs)
 */
if ($cfgRelation['commwork'] && isset($db_comment) && $db_comment == 'true') {
    PMA_SetComment($db, '', '(db_comment)', $comment);
}

/**
 * Prepares the tables list if the user where not redirected to this script
 * because there is no table in the database ($is_info is true)
 */
if (empty($is_info)) {
    require './libraries/db_common.inc.php';
    $url_query .= '&amp;goto=db_operations.php';

    // Gets the database structure
    $sub_part = '_structure';
    require './libraries/db_info.inc.php';
    echo "\n";
}

if (PMA_MYSQL_INT_VERSION >= 40101) {
    $db_collation = PMA_getDbCollation($db);
}
if (PMA_MYSQL_INT_VERSION < 50002
  || (PMA_MYSQL_INT_VERSION >= 50002 && $db != 'information_schema')) {
    $is_information_schema = false;
} else {
    $is_information_schema = true;
}

if (!$is_information_schema) {

    require './libraries/display_create_table.lib.php';

    if ($cfgRelation['commwork']) {
        /**
         * database comment
         */
        ?>
    <form method="post" action="db_operations.php">
    <?php echo PMA_generate_common_hidden_inputs($db); ?>
    <input type="hidden" name="db_comment" value="true" />
    <fieldset>
        <legend>
        <?php
        if ($cfg['PropertiesIconic']) {
            echo '<img class="icon" src="' . $pmaThemeImage . 'b_comment.png"'
                .' alt="" border="0" width="16" height="16" hspace="2" align="middle" />';
        }
        echo $strDBComment;
        $comment = PMA_getComments($db);
        ?>
        </legend>
        <input type="text" name="comment" class="textfield" size="30"
            value="<?php
            echo (isset($comment) && is_array($comment)
                ? htmlspecialchars(implode(' ', $comment))
                : ''); ?>" />
        <input type="submit" value="<?php echo $strGo; ?>" />
    </fieldset>
    </form>
        <?php
    }
    /**
     * rename database
     */
    ?>
    <form method="post" action="db_operations.php"
        onsubmit="return emptyFormElements(this, 'newname')">