Drupal modules for browsing and managing Fedora-based digital repositories.
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<?php
/**
* collection creation form
* @param array $form_state
* @param string $parent_collection_pid
* @param string $content_models
* @return array
*/
function collection_management_form(&$form_state, $this_collection_pid, $content_models) {
module_load_include('inc', 'fedora_repository', 'api/fedora_utils');
$restricted = FALSE;
if (variable_get('fedora_namespace_restriction_enforced', true)) {
$restricted = true;
$allowed_string = variable_get('fedora_pids_allowed', 'default: demo: changeme: islandora:');
$namespaces = explode(':', $allowed_string);
foreach ($namespaces as $namespace) {
if ($namespace) {
$allowed[trim($namespace)] = trim($namespace);
}
}
}
module_load_include('inc', 'fedora_repository', 'api/fedora_utils');
module_load_include('inc', 'fedora_repository', 'CollectionPolicy');
$item = new Fedora_Item($this_collection_pid);
$collection_name = $item->objectProfile->objLabel;
$new_content_models = get_content_models_as_option_array();
$cm_options = array();
$name_mappings = array();
foreach ($content_models as $content_model) {
if ($content_model->pid != "islandora:collectionCModel") {
$item = new fedora_item($content_model->pid);
$cm_name = $item->objectProfile->objLabel;
$cm_options[$content_model->pid] = $cm_name;
}
}
$content_models = get_content_models_as_option_array();
$form['child_creation'] = array(
'#title' => "Create Child Collection",
'#type' => 'fieldset',
'#collapsible' => TRUE,
'#collapsed' => TRUE,
);
$form['child_creation']['titlebox'] = array(
'#type' => 'item',
'#value' => t("Create New Child Collection within $this_collection_pid"),
);
$form['child_creation']['collection_name'] = array(
'#title' => "Collection Name",
'#type' => 'textfield',
'#description' => t("Human readable name for this collection"),
);
$form['child_creation']['new_collection_pid'] = array(
'#title' => "Collection PID",
'#type' => 'textfield',
'#size' => 15,
'#description' => t("Unique PID for this collection. <br />Pids take the general form of namespace:collection eg islandora:pamphlets"),
);
if (!$restricted) {
$form['child_creation']['collection_namespace'] = array(
'#title' => "Collection Namespace",
'#type' => 'textfield',
'#size' => 15,
'#default_value' => 'default',
'#description' => t("Namespace for objects in this collection."),
);
}
else {
$form['child_creation']['collection_namespace'] = array(
'#title' => "Collection Namespace",
'#type' => 'select',
'#options' => $allowed,
'#default_value' => 'default',
'#description' => t("Namespace for objects in this collection."),
);
}
$form['parent_collection'] = array(
'#type' => 'hidden',
'#value' => $this_collection_pid,
);
$form['collection_pid'] = array(
'#type' => 'hidden',
'#value' => $this_collection_pid,
);
$form['child_creation']['content_models'] = array(
'#title' => "Choose allowable content models for this collection",
'#type' => 'checkboxes',
'#options' => $content_models,
'#description' => t("Content models describe the behaviours of objects with which they are associated."),
);
$form['child_creation']['submit'] = array(
'#type' => 'submit',
'#value' => t('Create Collection'),
'#id' => 'create_class'
);
$form['change_cmodel'] = array(
'#title' => "Change Content Models",
'#type' => 'fieldset',
'#collapsible' => TRUE,
'#collapsed' => TRUE,
);
$form['change_cmodel']['titlebox'] = array(
'#type' => 'item',
'#value' => t("Change Content Models within $this_collection_pid"),
);
$form['change_cmodel']['current_content_model'] = array(
'#title' => "Choose content model to be changed",
'#type' => 'select',
'#options' => $cm_options,
'#description' => t("All objects in this collection with the selected content model will be changed."),
);
$form['change_cmodel']['new_content_model'] = array(
'#title' => "Choose new content model",
'#type' => 'select',
'#options' => $new_content_models,
'#description' => t("The new content model to be assigned to selected objects."),
);
$form['change_cmodel']['collection_pid'] = array(
'#type' => 'hidden',
'#value' => $this_collection_pid,
);
$form['change_cmodel']['submit'] = array(
'#type' => 'submit',
'#value' => t('Change Content Model Associations'),
'#id' => 'change_model',
);
if (user_access('delete entire collections')) {
$form['delete_collection'] = array(
'#title' => "Permanently Delete $collection_name",
'#type' => 'fieldset',
'#description' => t("Clicking this button will delete all objects within $collection_name. <br /> <strong>This action cannot be undone.</strong>"),
'#collapsible' => TRUE,
'#collapsed' => TRUE,
);
$form['delete_collection']['confirm'] = array(
'#title' => "Are you sure?",
'#type' => 'fieldset',
'#description' => t('<strong>Clicking the delete button will permanantly remove all objects from this collection. <br /> <strong>This action cannot be undone.</strong> '),
'#collapsible' => TRUE,
'#collapsed' => TRUE,
);
$form['delete_collection']['confirm']['submit'] = array(
'#type' => 'submit',
'#value' => t('Delete this collection'),
'#id' => 'delete_collection',
);
}
return($form);
}
/**
* collection creation form validate
* @param array $form
* @param array $form_state
*/
function collection_management_form_validate($form, &$form_state) {
if ($form_state['clicked_button']['#id'] == 'create_class') {
module_load_include('inc', 'fedora_repository', 'api/fedora_item');
module_load_include('inc', 'fedora_repository', 'api/fedora_utils');
$pid = $form_state['values']['new_collection_pid'];
$item = new fedora_item($pid);
if ($item->exists()) {
form_set_error('', t("$pid already exists within your repository. the PID must be unique"));
return;
}
if (!valid_pid($pid)) {
form_set_error('', t("$pid is not a valid identifier"));
return;
}
}
}
/**
* collection creation form submit
* @global type $user
* @param type $form
* @param type $form_state
*/
function collection_management_form_submit($form, &$form_state) {
module_load_include('inc', 'fedora_repository', 'api/fedora_collection');
module_load_include('inc', 'fedora_repository', 'api/fedora_item');
module_load_include('inc', 'fedora_repository', 'api/dublin_core');
global $user;
$collection_pid = $form_state['values']['parent_collection'];
if ($form_state['clicked_button']['#id'] == 'create_class') {
$module_path = drupal_get_path('module', 'fedora_repository');
$thumbnail = drupal_get_path('module', 'Fedora_Repository') . '/images/Crystal_Clear_filesystem_folder_grey.png';
$new_collection_pid = $form_state['values']['new_collection_pid'];
$new_collection_label = $form_state['values']['collection_name'];
$pid_namespace = $form_state['values']['collection_namespace'];
$all_cModels = get_content_models_as_option_array();
$collection_policy = '<?xml version="1.0" encoding="UTF-8"?>
<collection_policy xmlns="http://www.islandora.ca" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" name="" xsi:schemaLocation="http://www.islandora.ca http://syn.lib.umanitoba.ca/collection_policy.xsd">
<content_models>
</content_models>
<search_terms>
</search_terms>
<staging_area></staging_area>
<relationship>isMemberOfCollection</relationship>
</collection_policy>';
$content_models = $form_state['values']['content_models'];
$collection_policy_xml = simplexml_load_string($collection_policy);
foreach ($content_models as $content_model) {
if ($content_model) {
$node = $collection_policy_xml->content_models->addChild('content_model');
$node->addAttribute('dsid', 'ISLANDORACM');
$node->addAttribute('name', $all_cModels[$content_model]);
$node->addAttribute('namespace', $pid_namespace . ':1');
$node->addAttribute('pid', $content_model);
}
}
$item = fedora_item::ingest_new_item($new_collection_pid, 'A', $new_collection_label, $user->name);
$item->add_relationship('isMemberOfCollection', $collection_pid, RELS_EXT_URI);
$item->add_relationship('hasModel', 'islandora:collectionCModel', FEDORA_MODEL_URI);
$item->add_datastream_from_string($collection_policy_xml->saveXML(), 'COLLECTION_POLICY');
$item->add_datastream_from_file($thumbnail, 'TN');
drupal_goto("/fedora/repository/$new_collection_pid");
}
if ($form_state['clicked_button']['#id'] == 'change_model') {
$current_content_model = $form_state['values']['current_content_model'];
$new_content_model = $form_state['values']['new_content_model'];
$policy = CollectionPolicy::loadFromCollection($collection_pid, TRUE);
$add_to_policy = TRUE;
$policy_cms = $policy->getContentModels();
foreach ($policy_cms as $policy_cm) {
if ($policy_cm->pid == $current_content_model) {
$namespace = $policy_cm->pid_namespace;
}
if ($policy_cm->pid == $new_content_model) {
$add_to_policy = FALSE;
}
}
if ($add_to_policy) {
$policy->addModel(ContentModel::loadFromModel($new_content_model), $namespace);
$policy->saveToFedora();
}
$query = "select \$object from <#ri>
where (\$object <info:fedora/fedora-system:def/model#hasModel> <info:fedora/$current_content_model>
and \$object <info:fedora/fedora-system:def/relations-external#isMemberOfCollection> <info:fedora/$collection_pid>
and \$object <fedora-model:state> <info:fedora/fedora-system:def/model#Active>)";
$query = htmlentities(urlencode($query));
$content = '';
$url = variable_get('fedora_repository_url', 'http://localhost:8080/fedora/risearch');
$url .= "?type=tuples&flush=TRUE&format=csv&limit=$limit&offset=$offset&lang=itql&stream=on&query=" . $query;
$content .= do_curl($url);
$results = explode("\n", $content);
$object_pids = preg_replace('/^info:fedora\/|"object"/', '', $results);
$count = 0;
foreach ($object_pids as $object_pid) {
if (!$object_pid) {
continue;
}
$item = new fedora_item($object_pid);
$item->purge_relationship('hasModel', $current_content_model);
$item->add_relationship('hasModel', $new_content_model, FEDORA_MODEL_URI);
$count++;
}
drupal_set_message("$current_content_model changed to $new_content_model on $count objects");
}
if ($form_state['clicked_button']['#id'] == 'delete_collection') {
$collection_name = $form_state['values']['collection_name'];
$pids = get_related_items_as_array($collection_pid, 'isMemberOfCollection');
$batch = array(
'title' => "Deleting Objects from $name",
'operations' => array(),
'file' => drupal_get_path('module', 'fedora_repository') . '/CollectionManagement.inc',
);
foreach ($pids as $pid) {
$batch['operations'][] = array('delete_objects_as_batch', array($pid));
}
batch_set($batch);
batch_process('/fedora/repository');
}
}
/**
* deletes PID if pid is not collection
* @param <type> $pid
*/
function delete_objects_as_batch($pid) {
module_load_include('inc', 'fedora_repository', 'api/fedora_item');
$name = $user->name;
$item_to_delete = new Fedora_Item($pid);
$models = $item_to_delete->get_models();
foreach ($models as $model) {
if ($model['object'] != 'islandora:collectionCModel') {
$item_to_delete->purge("$object purged by $name");
}
}
}