Drupal modules for browsing and managing Fedora-based digital repositories.
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<?php
/**
* @file
* Handles the management of deleted objects.
*/
/**
* The deletion management prep form.
*
* @param array $form
* The Drupal form definition.
* @param array $form_state
* The Drupal form state.
*
* @return array
* The Drupal form definition.
*/
function islandora_deleted_objects_prep_form($form, $form_state, $serialized_chosen = NULL) {
module_load_include('inc', 'islandora', 'includes/utilities');
$chosen_contentmodels = array();
if ($serialized_chosen) {
$chosen_contentmodels = unserialize($serialized_chosen);
}
$contentmodels_with_deleted_members = islandora_get_contentmodels_with_deleted_members();
$elegible_contentmodels = array_keys($contentmodels_with_deleted_members);
if (empty($contentmodels_with_deleted_members)) {
$form['message'] = array(
'#type' => 'markup',
'#markup' => t("There are no deleted objects in this repository."),
);
return $form;
}
$form['message'] = array(
'#type' => 'markup',
'#markup' => t("Select content models of deleted objects."),
);
$form['mapped_contentmodels'] = array(
'#type' => 'hidden',
'#value' => $contentmodels_with_deleted_members,
);
$table_element = islandora_content_model_select_table_form_element(NULL);
foreach ($table_element['#options'] as $option) {
if (!in_array($option['pid'], $elegible_contentmodels)) {
unset($table_element['#options'][$option['pid']]);
}
}
foreach ($table_element['#options'] as $option) {
if (array_key_exists($option['pid'], $chosen_contentmodels)) {
$table_element['#default_value'][$option['pid']] = TRUE;
}
}
$form['contentmodels'] = $table_element;
$form['next'] = array(
'#type' => 'submit',
'#value' => t('Next'),
);
return $form;
}
/**
* Submit handler for deletion management prep form.
*
* @param array $form
* The form.
* @param array $form_state
* The form state.
*/
function islandora_deleted_objects_prep_form_submit($form, $form_state) {
$content_models = $form_state['values']['contentmodels'];
$chosen = function($element) {
return $element;
};
$serialized_contentmodels = serialize(array_filter($content_models, $chosen));
drupal_goto("admin/islandora/restore/manage/$serialized_contentmodels");
}
/**
* The deletion management prep form.
*
* @param array $form
* The Drupal form definition.
* @param array $form_state
* The Drupal form state.
*
* @return array
* The Drupal form definition.
*/
function islandora_deleted_objects_manage_form($form, $form_state, $serialized_chosen = NULL) {
$form['previous'] = array(
'#type' => 'submit',
'#value' => t('Previous'),
'#attributes' => array('source' => 'previous'),
);
$chosen_contentmodels = unserialize($serialized_chosen);
$content_models_with_deleted = islandora_get_contentmodels_with_deleted_members();
foreach ($chosen_contentmodels as $contentmodel) {
if (!array_key_exists($contentmodel, $content_models_with_deleted)) {
unset($chosen_contentmodels[$contentmodel]);
}
}
if (empty($chosen_contentmodels)) {
$form['message'] = array(
'#type' => 'markup',
'#markup' => t("There are no deleted objects with the selected content models in this repository."),
);
return $form;
}
if (is_array($chosen_contentmodels)) {
foreach ($chosen_contentmodels as $key => $value) {
if (in_array($key, $content_models_with_deleted)) {
$chosen_contentmodels[$key] = $content_models_with_deleted[$key];
}
}
}
$options = islandora_get_deleted_objects($chosen_contentmodels);
$per_page = 25;
if (count($options) < 28) {
$per_page = count($options);
}
$current_page = pager_default_initialize(count($options), $per_page);
$options_this_page = array_slice($options, $current_page * $per_page, $per_page);
foreach ($options_this_page as &$option) {
$option['content_model'] = $content_models_with_deleted[$option['content_model']];
}
$form['serialized_chosen'] = array(
'#type' => 'hidden',
'#value' => $serialized_chosen,
);
$form['pager'] = array(
'#type' => 'markup',
'#markup' => theme('pager', array('quantity', count($options))),
);
$form['propogate'] = array(
'#title' => t('Apply changes to related objects?'),
'#default_value' => TRUE,
'#description' => t("Objects associated with selected objects will also be restored. ie page objects associated with a book object."),
'#type' => 'checkbox',
);
$form['chosen'] = array(
'#type' => 'hidden',
'#value' => $chosen_contentmodels,
);
$form['objects_to_process'] = array(
'#type' => 'tableselect',
'#header' => array(
'title' => t('Name'),
'pid' => t('PID'),
'content_model' => t('Content Model'),
),
'#multiple' => TRUE,
'#options' => $options_this_page,
);
$form['submit'] = array(
'#type' => 'submit',
'#value' => t('Restore selected objects'),
'#attributes' => array('source' => 'restore'),
);
if (user_access(FEDORA_PURGE)) {
$form['purge'] = array(
'#type' => 'submit',
'#value' => t('Irrevocably purge selected objects'),
'#attributes' => array('source' => 'purge'),
);
}
return $form;
}
/**
* Submit handler for deletion management form.
*
* @param array $form
* The form.
* @param array $form_state
* The form state.
*/
function islandora_deleted_objects_manage_form_submit($form, $form_state) {
module_load_include('inc', 'islandora', 'includes/utilities');
$serialized_chosen = isset($form_state['values']['serialized_chosen']) ? $form_state['values']['serialized_chosen'] : NULL;
if (isset($form_state['clicked_button']['#attributes']['source']) && $form_state['clicked_button']['#attributes']['source'] == 'previous') {
drupal_goto("admin/islandora/restore/prep/$serialized_chosen");
}
if ($form_state['clicked_button']['#attributes']['source'] == 'restore') {
$descriptor = "Restoring";
$action = 'islandora_restore_object_by_pid';
}
if ($form_state['clicked_button']['#attributes']['source'] == 'purge') {
$descriptor = "Purging";
$action = 'islandora_purge_object_by_pid';
}
$objects_to_process = array_filter($form_state['values']['objects_to_process']);
$pids_to_restore = $objects_to_process;
if ($form_state['values']['propogate']) {
foreach ($objects_to_process as $pid) {
$fedora_object = islandora_object_load($pid);
$hooks = islandora_build_hook_list(ISLANDORA_UPDATE_RELATED_OBJECTS_PROPERTIES_HOOK, $fedora_object->models);
foreach ($hooks as $hook) {
$temp = module_invoke_all($hook, $fedora_object);
if (!empty($temp)) {
$pids_to_restore = array_merge_recursive($pids_to_restore, $temp);
}
}
}
}
$batch = array(
'title' => t('@descriptor selected objects', array('@descriptor' => $descriptor)),
'file' => drupal_get_path('module', 'islandora') . '/includes/manage_deleted_objects.inc',
'operations' => array(),
);
foreach ($pids_to_restore as $pid) {
$batch['operations'][] = array(
$action,
array($pid),
);
}
batch_set($batch);
batch_process("admin/islandora/restore/manage/$serialized_chosen");
}
/**
* Gets PIDS of all deleted objects.
*
* @return array
* array of pids
*/
function islandora_get_deleted_objects($content_models) {
$tuque = islandora_get_tuque_connection();
$repository = $tuque->repository;
$candidates = array_keys($content_models);
$first_contentmodel = array_shift($candidates);
$prefix = "PREFIX fm: <" . FEDORA_MODEL_URI . "> ";
$select = "SELECT DISTINCT ?subject ?label ?object FROM <#ri> WHERE { ";
$where_clause = "{?subject fm:hasModel <info:fedora/$first_contentmodel>;
fm:state fm:Deleted;
fm:hasModel ?object;
}";
$suffix = '}';
$unions = '';
foreach ($candidates as $contentmodel) {
$unions .= "UNION {?subject fm:hasModel <info:fedora/$contentmodel>;
fm:state fm:Deleted;
fm:hasModel ?object;
}
";
}
$optional = "OPTIONAL{?subject fm:label ?label}";
$query = "$prefix $select $where_clause $unions $optional $suffix";
$objects = $repository->ri->sparqlQuery($query, -1);
$deleted_objects = array();
foreach ($objects as $object) {
if ($object['object']['value'] != "fedora-system:FedoraObject-3.0") {
$pid = $object['subject']['value'];
$cm_pid = $object['object']['value'];
$title = $object['label']['value'];
$deleted_objects[$pid] = array(
'title' => $title, 'pid' => $pid,
'content_model' => $content_models[$cm_pid],
);
}
}
return $deleted_objects;
}
/**
* Gets PIDS of all content models associated with deleted objects.
*
* @return array
* array of content model pids
*/
function islandora_get_contentmodels_with_deleted_members() {
$tuque = new IslandoraTuque();
$repository = $tuque->repository;
$query = "PREFIX fm: <info:fedora/fedora-system:def/model#>
SELECT DISTINCT ?object ?label FROM <#ri>
WHERE {
{?subject fm:state fm:Deleted;
fm:hasModel ?object;
}
OPTIONAL{
?object fm:label ?label
}
}";
$objects = $repository->ri->sparqlQuery($query, -1);
$content_models = array();
foreach ($objects as $object) {
if ($object['object']['value'] != "fedora-system:FedoraObject-3.0") {
$content_models[$object['object']['value']] = $object['label']['value'];
}
}
return $content_models;
}
/**
* Restores deleted object.
*
* @param String $pid
* PID of object to be restored
*/
function islandora_restore_object_by_pid($pid) {
$fedora_object = islandora_object_load($pid);
$fedora_object->state = 'A';
}
/**
* Purges deleted object.
*
* @param String $pid
* PID of object to be restored
*/
function islandora_purge_object_by_pid($pid) {
$fedora_object = islandora_object_load($pid);
$fedora_object->repository->purgeObject($pid);
}