PHP xmldb_table::rename_field方法代码示例

//.........这里部分代码省略.........
        $table->add_field('object_type', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('object_id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        /// Adding keys to table marginalia
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Adding indexes to table marginalia
        $table->add_index('object', XMLDB_INDEX_NOTUNIQUE, array('object_type', 'object_id'));
        /// Launch create table for marginalia
        $dbman->create_table($table);
        // Check for old annotation table and convert its data over
        if ($result) {
            $query = "SELECT a.*, u.id AS uid, qa.id as aid " . " FROM {annotation} a" . " JOIN {user} u ON u.username=a.userid" . " LEFT JOIN {user} qa ON qa.username=a.quote_author";
            $data = $DB->get_recordset_sql($query);
            foreach ($data as $r) {
                /*					// This method and the range classes are clever enough to handle
                				// ranges in the old format.
                				if ( array_key_exists( 'start_block', $r ) && $r->start_block !== null )  {
                					$r->start_block = preg_replace( '/^\//', '', $r->start_block );
                					$r->start_block = preg_replace( '/\//', '\.', $r->start_block );
                				}
                				if ( array_key_exists( 'end_block', $r ) && $r->end_block !== null )  {
                					$r->end_block = preg_replace( '/^\//', '', $r->end_block );
                					$r->end_block = preg_replace( '/\//', '\.', $r->end_block );
                				}
                */
                $r->username = $r->userid;
                $r->userid = 0;
                $r->quote_author_username = $r->quote_author;
                $annotation = annotation_globals::record_to_annotation($r);
                // Will handle 'public' or 'private'
                if (array_key_exists('access', $r)) {
                    $annotation->setAccess($r->access);
                }
                // Fix backslashes (\' and \") in annotation and note
                if (AN_DBFIXBACKSLASHES) {
                    $quote = $annotation->getQuote();
                    $quote = preg_replace('/\\\\\'/', "'", $quote);
                    $quote = preg_replace('/\\\\"/', '"', $quote);
                    $annotation->setQuote($quote);
                    $note = $annotation->getNote();
                    $note = preg_replace('/\\\\\'/', "'", $note);
                    $note = preg_replace('/\\\\"/', '"', $note);
                    $annotation->setNote($note);
                }
                $record = annotation_globals::annotation_to_record($annotation);
                // Make sure start_line and end_line are not null
                if (!array_key_exists('start_line', $r)) {
                    $record->start_line = 0;
                }
                if (!array_key_exists('end_line', $r)) {
                    $record->end_line = 0;
                }
                $record->userid = $r->uid;
                $record->quote_author_id = $r->aid;
                $record->object_type = AN_OTYPE_POST;
                $record->object_id = $r->object_id;
                insert_record(AN_DBTABLE, $record, true);
            }
            $data->close();
        }
        upgrade_mod_savepoint(true, 2008121000, 'marginalia');
        // Should perhaps delete old annotation table?
    }
    if ($oldversion < 2010012800) {
        $table = new xmldb_table('marginalia');
        /* ---- course ---- */
        // Give in to Moodle's architecture and associate each annotation with a course
        // (I don't like that Moodle is course-centric: I think it should be user-centric instead.
        // I see annotations as belonging to the people who create them, not the things they
        // annotate or the courses they were created in.  A student over the course of his or her
        // career accumulates knowledge and content, synthesizing it into new knowledge and practice.
        // In contrast, a course-oriented system is rooted in administrative structure.)
        $table->add_field('course', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'id');
        $query = "UPDATE {marginalia} a, {forum_posts} p, {forum_discussions} d" . " SET a.course=d.course" . " WHERE a.object_id=p.id AND d.id=p.discussion";
        $DB->execute($query);
        /* ---- sheet_type ---- */
        // Replace access_perms with sheet_type
        // private used to have access bits 0x0;  now has access 0x1
        $table->rename_field('access_perms', 'sheet_type');
        $query = "UPDATE {$CFG->prefix}marginalia SET sheet_type=1 WHERE sheet_type=0";
        $result = $db->execute($query);
        /* ---- marginalia_read.* ---- */
        /// Define marginalia_read table, which tracks which annotations have been read by which users
        $table = new xmldb_table('marginalia_read');
        $table->add_field('id', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
        $table->add_field('annotationid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('userid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('firstread', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        $table->add_field('lastread', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0');
        /// Adding keys to table marginalia_read
        $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
        /// Adding indexes to table marginalia_read
        $table->add_index('object', XMLDB_INDEX_UNIQUE, array('annotationid', 'userid'));
        /* ---- user_preferences.* ---- */
        // Delete obsolete preferences
        delete_records('user_preferences', 'name', addslashes('annotations.user'));
        delete_records('user_preferences', 'name', addslashes('smartcopy'));
        upgrade_mod_savepoint(true, 20100112800.0, 'marginalia');
    }
    return $result;
}