moodle/mod/dialogue/restorelib.php

<?php //$Id$
    //This php script contains all the stuff to backup/restore
    //dialogue mods

    //This is the "graphical" structure of the dialogue mod:
    //
    //                     dialogue                                      
    //                   (CL,pk->id)
    //                        |
    //                        |
    //                        |
    //               dialogue_conversations
    //            (UL,pk->id, fk->dialogueid)
    //                        |
    //                        |
    //                        |
    //                 dialogue_entries 
    //            (UL,pk->id, fk->conversationid)     
    //
    // Meaning: pk->primary key field of the table
    //          fk->foreign key to link with parent
    //          nt->nested field (recursive data)
    //          CL->course level info
    //          UL->user level info
    //          files->table may have files)
    //
    //-----------------------------------------------------------

    //This function executes all the restore procedure about this mod
    function dialogue_restore_mods($mod,$restore) {

        global $CFG;

        $status = true;

        //Get record from backup_ids
        $data = backup_getid($restore->backup_unique_code,$mod->modtype,$mod->id);

        if ($data) {
            //Now get completed xmlized object
            $info = $data->info;
            //traverse_xmlize($info);                                                               //Debug
            //print_object ($GLOBALS['traverse_array']);                                            //Debug
            //$GLOBALS['traverse_array']="";                                                        //Debug

            //Now, build the dialogue record structure
            $dialogue->course = $restore->course_id;
            $dialogue->name = backup_todb($info['MOD']['#']['NAME']['0']['#']);
            $dialogue->intro = backup_todb($info['MOD']['#']['INTRO']['0']['#']);
            $dialogue->deleteafter = backup_todb($info['MOD']['#']['DELETEAFTER']['0']['#']);
            $dialogue->dialoguetype = backup_todb($info['MOD']['#']['DIALOGUETYPE']['0']['#']);
            $dialogue->multipleconversations = backup_todb($info['MOD']['#']['MULTIPLECONVERSATIONS']['0']['#']);
            $dialogue->maildefault = backup_todb($info['MOD']['#']['MAILDEFAULT']['0']['#']);
            $dialogue->timemodified = backup_todb($info['MOD']['#']['TIMEMODIFIED']['0']['#']);

            //The structure is equal to the db, so insert the dialogue
            $newid = insert_record ("dialogue",$dialogue);

            //Do some output
            echo "<li>".get_string("modulename","dialogue")." \"".$dialogue->name."\"</li>";
            backup_flush(300);

            if ($newid) {
                //We have the newid, update backup_ids
                backup_putid($restore->backup_unique_code,$mod->modtype,
                             $mod->id, $newid);
                //Now check if want to restore user data and do it.
                if ($restore->mods['dialogue']->userinfo) {
                    //Restore dialogue_conversations
                    $status = dialogue_conversations_restore($mod->id, $newid,$info,$restore);
                }
            } else {
                $status = false;
            }
        } else {
            $status = false;
        }

        return $status;
    }


    //This function restores the dialogue_conversations
    function dialogue_conversations_restore($old_dialogue_id, $new_dialogue_id,$info,$restore) {

        global $CFG;

        $status = true;

        //Get the entries array
        $conversations = $info['MOD']['#']['CONVERSATIONS']['0']['#']['CONVERSATION'];

        if ($conversations) {
            //Iterate over conversations
            for($i = 0; $i < sizeof($conversations); $i++) {
                $conversation_info = $conversations[$i];
                //traverse_xmlize($conversation_info);                                  //Debug
                //print_object ($GLOBALS['traverse_array']);                            //Debug
                //$GLOBALS['traverse_array']="";                                        //Debug

                //We'll need this later!!
                $oldid = backup_todb($conversation_info['#']['ID']['0']['#']);
                $olduserid = backup_todb($conversation_info['#']['USERID']['0']['#']);

                //Now, build the dialogue_ENTRIES record structure
                $conversation->dialogueid = $new_dialogue_id;
                $conversation->userid = backup_todb($conversation_info['#']['USERID']['0']['#']);
                $conversation->recipientid = backup_todb($conversation_info['#']['RECIPIENTID']['0']['#']);
                $conversation->lastid = backup_todb($conversation_info['#']['LASTID']['0']['#']);
                $conversation->timemodified = backup_todb($conversation_info['#']['TIMEMODIFIED']['0']['#']);
                $conversation->closed = backup_todb($conversation_info['#']['CLOSED']['0']['#']);
                $conversation->seenon = backup_todb($conversation_info['#']['SEENON']['0']['#']);
                $conversation->ctype = backup_todb($conversation_info['#']['CTYPE']['0']['#']);
                $conversation->format = backup_todb($conversation_info['#']['FORMAT']['0']['#']);
                $conversation->subject = backup_todb($conversation_info['#']['SUBJECT']['0']['#']);
                //We have to recode the userid and recipientid fields
                $user = backup_getid($restore->backup_unique_code,"user",$conversation->userid);
                if ($user) {
                    $conversation->userid = $user->new_id;
                }
                $user = backup_getid($restore->backup_unique_code,"user",$conversation->recipientid);
                if ($user) {
                    $conversation->recipientid = $user->new_id;
                }

                //The structure is equal to the db, so insert the dialogue_conversation
                $newid = insert_record ("dialogue_conversations",$conversation);

                //Do some output
                if (($i+1) % 50 == 0) {
                    echo ".";
                    if (($i+1) % 1000 == 0) {
                        echo "<br />";
                    }
                    backup_flush(300);
                }

                if ($newid) {
                    //We have the newid, update backup_ids
                    backup_putid($restore->backup_unique_code, "dialogue_conversations",
                            $oldid, $newid);
                    //Now check if want to restore user data and do it.
                    if ($status) {
                        //Restore dialogue_entries
                        $status = dialogue_entries_restore($new_dialogue_id, $newid,$conversation_info,
                                $restore);
                    }
                } else {
                    $status = false;
                }
            }

       }

        return $status;
    }

    //This function restores the dialogue_entries
    function dialogue_entries_restore($new_dialogue_id, $new_conversation_id,$info,$restore) {

        global $CFG;

        $status = true;

        //Get the entries array
        if (isset($info['#']['ENTRIES']['0']['#']['ENTRY'])) {
            $entries = $info['#']['ENTRIES']['0']['#']['ENTRY'];

            //Iterate over entries
            for($i = 0; $i < sizeof($entries); $i++) {
                $entry_info = $entries[$i];
                //traverse_xmlize($entry_info);                                                      //Debug
                //print_object ($GLOBALS['traverse_array']);                                         //Debug
                //$GLOBALS['traverse_array']="";                                                     //Debug

                //We'll need this later!!
                $oldid = backup_todb($entry_info['#']['ID']['0']['#']);
                $olduserid = backup_todb($entry_info['#']['USERID']['0']['#']);

                //Now, build the dialogue_ENTRIES record structure
                $entry->dialogueid = $new_dialogue_id;
                $entry->conversationid = $new_conversation_id;
                $entry->userid = backup_todb($entry_info['#']['USERID']['0']['#']);
                $entry->timecreated = backup_todb($entry_info['#']['TIMECREATED']['0']['#']);
                $entry->mailed = backup_todb($entry_info['#']['MAILED']['0']['#']);
                $entry->text = backup_todb($entry_info['#']['TEXT']['0']['#']);

                //We have to recode the userid field
                $user = backup_getid($restore->backup_unique_code,"user",$entry->userid);
                if ($user) {
                    $entry->userid = $user->new_id;
                }

                //The structure is equal to the db, so insert the dialogue_entry
                $newid = insert_record ("dialogue_entries",$entry);

                //Do some output
                if (($i+1) % 50 == 0) {
                    echo ".";
                    if (($i+1) % 1000 == 0) {
                        echo "<br />";
                    }
                    backup_flush(300);
                }

                if ($newid) {
                    //We have the newid, update backup_ids
                    backup_putid($restore->backup_unique_code,"dialogue_entry",$oldid,
                            $newid);
                } else {
                    $status = false;
                }
            }
        }

        return $status;
    }

?>