Developer Documentation
See Release Notes
Long Term Support Release
- Bug fixes for general core bugs in 4.1.x will end 13 November 2023 (12 months).
- Bug fixes for security issues in 4.1.x will end 10 November 2025 (36 months).
- PHP version: minimum PHP 7.4.0 Note: minimum PHP version has increased since Moodle 4.0. PHP 8.0.x is supported too.
Differences Between: [Versions 310 and 401] [Versions 311 and 401] [Versions 39 and 401] [Versions 400 and 401]
Defines Moodle 1.9 backup conversion handlers Handlers are classes responsible for the actual conversion work. Their logic is similar to the functionality provided by steps in plan based restore process.
| Copyright: | 2011 David Mudrak <david@moodle.com> |
| License: | http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later |
| File Size: | 2173 lines (83 kb) |
| Included or required: | 1 time |
| Referenced: | 0 times |
| Includes or requires: | 0 files |
Defines 20 classes
moodle1_handlers_factory:: (2 methods):
get_handlers()
get_plugin_handlers()
moodle1_handler:: (3 methods):
__construct()
get_converter()
log()
moodle1_xml_handler:: (5 methods):
open_xml_writer()
close_xml_writer()
has_xml_writer()
write_xml()
make_sure_xml_exists()
moodle1_root_handler:: (3 methods):
get_paths()
on_root_element_start()
on_root_element_end()
moodle1_files_handler:: (2 methods):
process()
migrate_course_files()
moodle1_info_handler:: (6 methods):
get_paths()
process_info()
process_info_details_mod()
process_info_details_mod_instance()
on_info_details_mod_end()
on_info_details_end()
moodle1_course_header_handler:: (4 methods):
get_paths()
process_course_header()
process_course_header_category()
on_course_header_end()
moodle1_course_outline_handler:: (6 methods):
get_paths()
process_course_section()
process_course_module()
on_course_section_end()
on_course_sections_end()
on_course_modules_end()
moodle1_roles_definition_handler:: (3 methods):
get_paths()
process_roles_role()
on_roles_end()
moodle1_question_bank_handler:: (12 methods):
get_file_manager()
get_current_category_context()
get_paths()
on_question_categories_start()
on_question_category_start()
process_question_category()
process_question_category_context()
process_question()
on_questions_end()
on_question_category_end()
on_question_categories_end()
get_qtype_handler()
moodle1_scales_handler:: (3 methods):
get_paths()
on_scales_start()
process_scale()
moodle1_outcomes_handler:: (4 methods):
get_paths()
on_gradebook_grade_outcomes_start()
process_gradebook_grade_outcome()
on_gradebook_grade_outcomes_end()
moodle1_gradebook_handler:: (13 methods):
get_paths()
on_gradebook_start()
process_gradebook_grade_letter()
process_gradebook_grade_category()
process_gradebook_grade_item()
process_mod_grade_item()
process_nonmod_grade_item()
on_gradebook_grade_item_grades_start()
on_gradebook_end()
write_grade_categories()
calculate_category_path()
write_grade_items()
write_grade_letters()
moodle1_plugin_handler:: (2 methods):
__construct()
get_component_name()
moodle1_qtype_handler:: (14 methods):
get_question_subpaths()
process_question()
write_answers()
migrate_files()
write_numerical_units()
write_numerical_options()
get_default_numerical_options()
write_dataset_definitions()
__construct()
get_paths()
open_xml_writer()
close_xml_writer()
use_xml_writer()
convert_answer()
moodle1_mod_handler:: (2 methods):
get_modname()
get_cminfo()
moodle1_resource_successor_handler:: (3 methods):
get_paths()
process_legacy_resource()
on_legacy_resource_end()
moodle1_block_handler:: (7 methods):
get_paths()
process_block()
convert_common_block_data()
convert_configdata()
write_block_xml()
write_inforef_xml()
write_roles_xml()
moodle1_block_generic_handler:: (0 methods):
moodle1_submod_handler:: (2 methods):
__construct()
get_paths()
Class: moodle1_handlers_factory - X-Ref
Handlers factory class| get_handlers(moodle1_converter $converter) X-Ref |
param: moodle1_converter the converter requesting the converters return: list of all available conversion handlers |
| get_plugin_handlers($type, moodle1_converter $converter) X-Ref |
| Runs through all plugins of a specific type and instantiates their handlers param: string $type the plugin type param: moodle1_converter $converter the converter requesting the handler return: array of {@link moodle1_handler} instances |
Class: moodle1_handler - X-Ref
Base backup conversion handler| __construct(moodle1_converter $converter) X-Ref |
param: moodle1_converter $converter the converter that requires us |
| get_converter() X-Ref |
return: moodle1_converter the converter that required this handler |
| log($message, $level, $a = null, $depth = null, $display = false) X-Ref |
| Log a message using the converter's logging mechanism param: string $message message text param: int $level message level {@example backup::LOG_WARNING} param: null|mixed $a additional information param: null|int $depth the message depth param: bool $display whether the message should be sent to the output, too |
Class: moodle1_xml_handler - X-Ref
Base backup conversion handler that generates an XML file| open_xml_writer($filename) X-Ref |
| Opens the XML writer - after calling, one is free to use $xmlwriter param: string $filename XML file name to write into return: void |
| close_xml_writer() X-Ref |
| Close the XML writer At the moment, the caller must close all tags before calling return: void |
| has_xml_writer() X-Ref |
| Checks if the XML writer has been opened by {@link self::open_xml_writer()} return: bool |
| write_xml($element, array $data, array $attribs = array() X-Ref |
| Writes the given XML tree data into the currently opened file param: string $element the name of the root element of the tree param: array $data the associative array of data to write param: array $attribs list of additional fields written as attributes instead of nested elements param: string $parent used internally during the recursion, do not set yourself |
| make_sure_xml_exists($filename, $rootelement = false, $content = array() X-Ref |
| Makes sure that a new XML file exists, or creates it itself This is here so we can check that all XML files that the restore process relies on have been created by an executed handler. If the file is not found, this method can create it using the given $rootelement as an empty root container in the file. param: string $filename relative file name like 'course/course.xml' param: string|bool $rootelement root element to use, false to not create the file param: array $content content of the root element return: bool true is the file existed, false if it did not |
Class: moodle1_root_handler - X-Ref
Process the root element of the backup file| get_paths() X-Ref |
| No description |
| on_root_element_start() X-Ref |
| Converts course_files and site_files |
| on_root_element_end() X-Ref |
| This is executed at the end of the moodle.xml parsing |
Class: moodle1_files_handler - X-Ref
The class responsible for course and site files migration| process() X-Ref |
| Migrates course_files and site_files in the converter workdir |
| migrate_course_files() X-Ref |
| Migrates course_files in the converter workdir |
Class: moodle1_info_handler - X-Ref
Handles the conversion of /MOODLE_BACKUP/INFO pathsWe do not produce any XML file here, just storing the data in the temp
table so thay can be used by a later handler.
| get_paths() X-Ref |
| No description |
| process_info($data) X-Ref |
| Stashes the backup info for later processing by {@link moodle1_root_handler} |
| process_info_details_mod($data) X-Ref |
| Initializes the in-memory cache for the current mod |
| process_info_details_mod_instance($data) X-Ref |
| Appends the current instance data to the temporary in-memory cache |
| on_info_details_mod_end($data) X-Ref |
| Stashes the backup info for later processing by {@link moodle1_root_handler} |
| on_info_details_end() X-Ref |
| Stashes the list of activity module types for later processing by {@link moodle1_root_handler} |
Class: moodle1_course_header_handler - X-Ref
Handles the conversion of /MOODLE_BACKUP/COURSE/HEADER paths| get_paths() X-Ref |
| No description |
| process_course_header($data, $raw) X-Ref |
| Because there is the CATEGORY branch in the middle of the COURSE/HEADER branch, this is dispatched twice. We use $this->coursecooked to merge the result. Once the parser is fixed, it can be refactored. |
| process_course_header_category($data) X-Ref |
| No description |
| on_course_header_end() X-Ref |
| No description |
Class: moodle1_course_outline_handler - X-Ref
Handles the conversion of course sections and course modules| get_paths() X-Ref |
| This handler is interested in course sections and course modules within them |
| process_course_section($data) X-Ref |
| No description |
| process_course_module($data, $raw) X-Ref |
| Populates the section sequence field (order of course modules) and stashes the course module info so that is can be dumped to activities/xxxx_x/module.xml later |
| on_course_section_end() X-Ref |
| Writes sections/section_xxx/section.xml file and stashes it, too |
| on_course_sections_end() X-Ref |
| Stashes the course contents |
| on_course_modules_end() X-Ref |
| Writes the information collected by mod handlers |
Class: moodle1_roles_definition_handler - X-Ref
Handles the conversion of the defined roles| get_paths() X-Ref |
| Where the roles are defined in the source moodle.xml |
| process_roles_role($data) X-Ref |
| If there are any roles defined in moodle.xml, convert them to roles.xml |
| on_roles_end() X-Ref |
| Finishes writing roles.xml |
Class: moodle1_question_bank_handler - X-Ref
Handles the conversion of the question bank included in the moodle.xml file| get_file_manager() X-Ref |
| Return the file manager instance used. return: moodle1_file_manager |
| get_current_category_context() X-Ref |
| Returns the information about the question category context being currently parsed return: array with keys contextid, contextlevel and contextinstanceid |
| get_paths() X-Ref |
| Registers path that are not qtype-specific |
| on_question_categories_start() X-Ref |
| Starts writing questions.xml and prepares the file manager instance |
| on_question_category_start() X-Ref |
| Initializes the current category cache |
| process_question_category($data, $raw) X-Ref |
| Populates the current question category data Bacuse of the known subpath-in-the-middle problem (CONTEXT in this case), this is actually called twice for both halves of the data. We merge them here into the currentcategory array. |
| process_question_category_context($data) X-Ref |
| Inject the context related information into the current category |
| process_question(array $data, array $raw) X-Ref |
| Writes the common <question> data and re-dispateches the whole grouped <QUESTION> data to the qtype for appending its qtype specific data processing param: array $data param: array $raw return: array |
| on_questions_end() X-Ref |
| Closes the questions wrapper |
| on_question_category_end() X-Ref |
| Closes the question_category and annotates the category id so that it can be dumped into course/inforef.xml |
| on_question_categories_end() X-Ref |
| Stops writing questions.xml |
| get_qtype_handler($qtype) X-Ref |
| Provides access to the qtype handlers Returns either list of all qtype handler instances (if passed '*') or a particular handler for the given qtype or false if the qtype is not supported. param: string $qtype the name of the question type or '*' for returning all return: array|moodle1_qtype_handler|bool |
Class: moodle1_scales_handler - X-Ref
Handles the conversion of the scales included in the moodle.xml file| get_paths() X-Ref |
| Registers paths |
| on_scales_start() X-Ref |
| Prepare the file manager for the files embedded in the scale description field |
| process_scale(array $data, array $raw) X-Ref |
| This is executed every time we have one <SCALE> data available param: array $data param: array $raw return: array |
Class: moodle1_outcomes_handler - X-Ref
Handles the conversion of the outcomes| get_paths() X-Ref |
| Registers paths |
| on_gradebook_grade_outcomes_start() X-Ref |
| Prepares the file manager and starts writing outcomes.xml |
| process_gradebook_grade_outcome(array $data, array $raw) X-Ref |
| Processes GRADE_OUTCOME tags progressively |
| on_gradebook_grade_outcomes_end() X-Ref |
| Closes outcomes.xml |
Class: moodle1_gradebook_handler - X-Ref
Handles the conversion of the gradebook structures in the moodle.xml file| get_paths() X-Ref |
| Registers paths |
| on_gradebook_start() X-Ref |
| Initializes the in-memory structures This should not be needed actually as the moodle.xml contains just one GRADEBOOK element. But who knows - maybe someone will want to write a mass conversion tool in the future (not me definitely ;-) |
| process_gradebook_grade_letter(array $data, array $raw) X-Ref |
| Processes one GRADE_LETTER data In Moodle 1.9, all grade_letters are from course context only. Therefore we put them here. |
| process_gradebook_grade_category(array $data, array $raw) X-Ref |
| Processes one GRADE_CATEGORY data |
| process_gradebook_grade_item(array $data, array $raw) X-Ref |
| Processes one GRADE_ITEM data |
| process_mod_grade_item(array $data, array $raw) X-Ref |
| Processes one GRADE_ITEM of the type 'mod' |
| process_nonmod_grade_item(array $data, array $raw) X-Ref |
| Processes one GRADE_ITEM of te type 'manual' or 'course' or 'category' |
| on_gradebook_grade_item_grades_start() X-Ref |
| on_gradebook_end() X-Ref |
| Writes the collected information into gradebook.xml |
| write_grade_categories() X-Ref |
| Writes grade_categories |
| calculate_category_path($categoryid) X-Ref |
| Calculates the path to the grade_category Moodle 1.9 backup does not store the grade_category's depth and path. This method is used to repopulate this information using the $this->categoryparent values. param: int $categoryid return: array of ids including the categoryid |
| write_grade_items() X-Ref |
| Writes grade_items |
| write_grade_letters() X-Ref |
| Writes grade_letters |
Class: moodle1_plugin_handler - X-Ref
Shared base class for activity modules, blocks and qtype handlers| __construct(moodle1_converter $converter, $plugintype, $pluginname) X-Ref |
param: moodle1_converter $converter the converter that requires us param: string $plugintype param: string $pluginname |
| get_component_name() X-Ref |
| Returns the normalized name of the plugin, eg mod_workshop return: string |
Class: moodle1_qtype_handler - X-Ref
Base class for all question type handlers| get_question_subpaths() X-Ref |
| Returns the list of paths within one <QUESTION> that this qtype needs to have included in the grouped question structure return: array of strings |
| process_question(array $data, array $raw) X-Ref |
| Gives the qtype handler a chance to write converted data into questions.xml param: array $data grouped question data param: array $raw grouped raw QUESTION data |
| write_answers(array $answers, $qtype) X-Ref |
| Converts the answers and writes them into the questions.xml The structure "answers" is used by several qtypes. It contains data from {question_answers} table. param: array $answers as parsed by the grouped parser in moodle.xml param: string $qtype containing the answers |
| migrate_files($text, $component, $filearea, $itemid) X-Ref |
| Migrate files belonging to one qtype plugin text field. param: array $text the html fragment containing references to files param: string $component the component for restored files param: string $filearea the file area for restored files param: int $itemid the itemid for restored files return: string the text for this field, after files references have been processed |
| write_numerical_units(array $numericalunits) X-Ref |
| Writes the grouped numerical_units structure param: array $numericalunits |
| write_numerical_options(array $numericaloption) X-Ref |
| Writes the numerical_options structure param: array $numericaloption |
| get_default_numerical_options($oldquestiontextformat, $units) X-Ref |
| Returns default numerical_option structure This structure is not present in moodle.xml, we create a new artificial one here. param: int $oldquestiontextformat return: array |
| write_dataset_definitions(array $datasetdefinitions) X-Ref |
| Writes the dataset_definitions structure param: array $datasetdefinitions array of dataset_definition structures |
| __construct(moodle1_question_bank_handler $qbankhandler, $qtype) X-Ref |
| No description |
| get_paths() X-Ref |
| open_xml_writer($filename) X-Ref |
| Question type handlers cannot open the xml_writer |
| close_xml_writer() X-Ref |
| Question type handlers cannot close the xml_writer |
| use_xml_writer(xml_writer $xmlwriter) X-Ref |
| Provides a xml_writer instance to this qtype converter param: xml_writer $xmlwriter |
| convert_answer(array $old, $qtype) X-Ref |
| Converts <ANSWER> structure into the new <answer> one See question_backup_answers() in 1.9 and add_question_question_answers() in 2.0 param: array $old the parsed answer array in moodle.xml param: string $qtype the question type the answer is part of return: array |
Class: moodle1_mod_handler - X-Ref
Base class for activity module handlers| get_modname() X-Ref |
| Returns the name of the module, eg. 'forum' return: string |
| get_cminfo($instance, $modname = null) X-Ref |
| Returns course module information for the given instance id The information for this instance id has been stashed by {@link moodle1_course_outline_handler::process_course_module()} param: int $instance the module instance id param: string $modname the module type, defaults to $this->pluginname return: int |
Class: moodle1_resource_successor_handler - X-Ref
Base class for all modules that are successors of the 1.9 resource module| get_paths() X-Ref |
| Resource successors do not attach to paths themselves, they are called explicitely by moodle1_mod_resource_handler return: array |
| process_legacy_resource(array $data, array $raw = null) X-Ref |
| Converts /MOODLE_BACKUP/COURSE/MODULES/MOD/RESOURCE data Called by {@link moodle1_mod_resource_handler::process_resource()} param: array $data pre-cooked legacy resource data param: array $raw raw legacy resource data |
| on_legacy_resource_end(array $data) X-Ref |
| Called when the parses reaches the end </MOD> resource tag param: array $data the data returned by {@link self::process_resource} or just pre-cooked |
Class: moodle1_block_handler - X-Ref
Base class for block handlers| get_paths() X-Ref |
| No description |
| process_block(array $data) X-Ref |
| No description |
| convert_common_block_data(array $olddata) X-Ref |
| No description |
| convert_configdata(array $olddata) X-Ref |
| No description |
| write_block_xml($newdata, $data) X-Ref |
| No description |
| write_inforef_xml($newdata, $data) X-Ref |
| No description |
| write_roles_xml($newdata, $data) X-Ref |
| No description |
Class: moodle1_submod_handler - X-Ref
Base class for the activity modules' subplugins| __construct(moodle1_mod_handler $parenthandler, $subplugintype, $subpluginname) X-Ref |
param: moodle1_mod_handler $parenthandler the handler of a module we are subplugin of param: string $subplugintype the type of the subplugin param: string $subpluginname the name of the subplugin |
| get_paths() X-Ref |
| Activity module subplugins can't declare any paths to handle The paths must be registered by the parent module and then re-dispatched to the relevant subplugins for eventual processing. return: array empty array |
