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241 lines
8.8 KiB
241 lines
8.8 KiB
<?php |
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/** |
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* @file |
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* CollectionManagement.inc |
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* A set of useful functions to help with collection management |
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*/ |
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/** |
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* returns content models associated with all objects in a collection |
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* @param string $pid |
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* @return array |
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*/ |
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function get_represented_content_models($pid) { |
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module_load_include('inc', 'islandora', 'RestConnection'); |
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$rest_connection = new RestConnection(); |
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require_once 'sites/all/libraries/tuque/RepositoryQuery.php'; |
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$query = "select \$model \$title from <#ri> |
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where (\$object <info:fedora/fedora-system:def/relations-external#isMemberOf> <info:fedora/$pid> |
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or \$object <info:fedora/fedora-system:def/relations-external#isMemberOfCollection> <info:fedora/$pid>) |
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and \$object <info:fedora/fedora-system:def/model#hasModel> \$model |
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and \$object <dc:title> \$title"; |
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$model_pids = $rest_connection->repository->ri->itqlQuery($query, 'unlimited', '0'); |
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$represented_models = array(); |
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foreach ($model_pids as $model_pid) { |
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if ($model_pid['model']['value'] && $model_pid['model']['value'] != 'fedora-system:FedoraObject-3.0') { |
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try { |
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$fedora_object = new FedoraObject($model_pid['model']['value'], $rest_connection->repository); |
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$content_model_title = $fedora_object->label; |
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$represented_models[$model_pid['model']['value']] = $model_pid['model']['value'] . ' ~ ' . $content_model_title; |
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} |
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catch (RepositoryException $e) {} |
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} |
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} |
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return $represented_models; |
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} |
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function get_child_collections($collection_pid) { |
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module_load_include('inc', 'islandora', 'RestConnection'); |
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$rest_connection = new RestConnection(); |
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require_once 'sites/all/libraries/tuque/RepositoryQuery.php'; |
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$query = <<<EOD |
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select \$object from <#ri> |
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where \$object <info:fedora/fedora-system:def/model#hasModel> <info:fedora/islandora:collectionCModel> |
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and \$object <info:fedora/fedora-system:def/relations-external#isMemberOfCollection> <info:fedora/$collection_pid> |
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EOD; |
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$lines = $rest_connection->repository->ri->itqlQuery($query, 'unlimited', '0'); |
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$collection_pids = array_values(array_filter($lines)); |
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return $collection_pids; |
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} |
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function islandora_collections_get_collection_from_pid($pid) { |
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module_load_include('inc', 'islandora', 'RestConnection'); |
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$rest_connection = new RestConnection(); |
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require_once 'sites/all/libraries/tuque/RepositoryQuery.php'; |
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$query = 'select $parent from <#ri> |
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where ($object <fedora-rels-ext:isMemberOf> $parent |
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or $object <fedora-rels-ext:isMemberOfCollection> $parent) |
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and $object <dc:identifier> \'' . $pid . '\' |
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order by $object'; |
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$object_pids = $rest_connection->repository->ri->itqlQuery($query, 'unlimited', '0'); |
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$object_pids = array_values(array_filter($object_pids)); |
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return $object_pids; |
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} |
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/** |
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* Returns an array of pids that match the query contained in the collection |
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* object's QUERY datastream or in the suppled $query parameter. |
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* @param <type> $collection_pid |
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* @param <type> $query |
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* @param <type> $query_format R |
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*/ |
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function get_related_items_as_array($collection_pid, $relationship = array('isMemberOfCollection'), $limit = 10000, $offset = 0, $active_objects_only = TRUE, $cmodel = NULL, $orderby = '$title') { |
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module_load_include('inc', 'islandora', 'RestConnection'); |
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$rest_connection = new RestConnection(); |
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require_once 'sites/all/libraries/tuque/RepositoryQuery.php'; |
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global $user; |
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// Not sure if this is necessary given that we should never be able to delete objects in a namespace that we don't have access to. |
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// if (!fedora_repository_access('view fedora repository', $collection_pid['object']['value'])) { |
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// drupal_set_message(t("You do not have access to Fedora objects within the attempted namespace or access to Fedora denied."), 'error'); |
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// return array(); |
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// } |
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$query_string = 'select $object $title $content from <#ri> |
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where ($object <fedora-model:label> $title |
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and $object <fedora-model:hasModel> $content |
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and ('; |
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if (is_array($relationship)) { |
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foreach ($relationship as $rel) { |
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$query_string .= '$object <fedora-rels-ext:' . $rel . '> <info:fedora/' . $collection_pid . '>'; |
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if (next($relationship)) { |
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$query_string .= ' OR '; |
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} |
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} |
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} |
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elseif (is_string($relationship)) { |
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$query_string .= '$object <fedora-rels-ext:' . $relationship . '> <info:fedora/' . $collection_pid . '>'; |
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} |
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else { |
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return ''; |
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} |
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$query_string .= ') '; |
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$query_string .= $active_objects_only ? 'and $object <fedora-model:state> <info:fedora/fedora-system:def/model#Active>' : ''; |
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if ($cmodel) { |
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$query_string .= ' and $content <mulgara:is> <info:fedora/' . $cmodel . '>'; |
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} |
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$query_string .= ') |
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minus $content <mulgara:is> <info:fedora/fedora-system:FedoraObject-3.0> |
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order by ' . $orderby; |
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$results = $rest_connection->repository->ri->itqlQuery($query_string, $limit, $offset); |
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return $results; |
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} |
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/** |
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* determines whether we can see the object or not |
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* checks PID namespace permissions, and user permissions |
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* @global type $user |
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* @param type $op |
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* @param type $pid |
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* @return type |
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*/ |
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function fedora_repository_access($permission, $pid) { |
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global $user; |
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$name_space_access = FALSE; |
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$is_restricted = variable_get('islandora_namespace_restriction_enforced', FALSE); |
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if (!$is_restricted) { |
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$name_space_access = TRUE; |
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} |
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if ($pid == NULL) { |
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$pid = variable_get('islandora_repository_pid', 'islandora:root'); |
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} |
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$name_space_allowed = explode(" ", variable_get('islandora_pids_allowed', 'default: demo: changeme: islandora: ilives: islandora-book: books: newspapers: ')); |
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$pos = NULL; |
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foreach ($name_space_allowed as $name_space) { |
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$pos = stripos($pid, $name_space); |
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if ($pos === 0) { |
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$name_space_access = TRUE; |
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} |
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} |
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if ($name_space_access) { |
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$user_access = user_access($permission); |
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if ($user_access == NULL) { |
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return FALSE; |
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} |
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return $user_access; |
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} |
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else { |
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return FALSE; |
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} |
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} |
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/** |
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* gets the name of the content models for the specified object |
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* this now returns an array of pids as in Fedora 3 we can have more then one Cmodel for an object |
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* @param type $pid |
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* @param type $include_fedora_system_content_models |
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* @return array |
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*/ |
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function get_content_models_list($pid, $include_fedora_system_content_models = FALSE) { |
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module_load_include('inc', 'islandora', 'RestConnection'); |
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require_once 'sites/all/libraries/tuque/RepositoryQuery.php'; |
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$rest_connection = new RestConnection(); |
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$pids = array(); |
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$query = 'select $object from <#ri> |
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where <info:fedora/' . $pid . '> <fedora-model:hasModel> $object |
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and $object <fedora-model:state> <info:fedora/fedora-system:def/model#Active>'; |
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$content_models = $rest_connection->repository->ri->itqlQuery($query, 'unlimited', '0'); |
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if (empty($content_models)) { |
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return $pids; |
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} |
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$cmodels = array(); |
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foreach ($content_models as $content_model) { |
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if (strpos($content_model['object']['uri'], 'fedora-system:FedoraObject-3.0') != FALSE && $include_fedora_system_content_models == FALSE) { |
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continue; |
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} |
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$cmodels[] = substr(strstr($content_model['object']['uri'], '/'), 1); |
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} |
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return $cmodels; |
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} |
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/** |
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* Function: get_content_models_as_option_array |
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* |
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* Description: Returns an associative array of all available content models in Fedora instance |
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* |
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* @return array |
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*/ |
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function get_content_models_as_option_array() { |
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module_load_include('inc', 'islandora', 'RestConnection'); |
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$rest_connection = new RestConnection(); |
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require_once 'sites/all/libraries/tuque/RepositoryQuery.php'; |
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$restricted = variable_get('islandora_namespace_restriction_enforced', FALSE); |
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$allowed_string = variable_get('islandora_pids_allowed', 'default: demo: changeme: islandora:'); |
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$namespaces = explode(':', $allowed_string); |
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foreach ($namespaces as $namespace) { |
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if ($namespace) { |
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$allowed[] = trim($namespace); |
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} |
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} |
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$query = 'select $object $title from <#ri> |
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where ($object <fedora-model:label> $title |
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and ($object <fedora-model:hasModel> <info:fedora/fedora-system:ContentModel-3.0> |
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or $object <fedora-rels-ext:isMemberOfCollection> <info:fedora/islandora:ContentModelsCollection>) |
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and $object <fedora-model:state> <info:fedora/fedora-system:def/model#Active>) |
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order by $title'; |
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$list = $rest_connection->repository->ri->itqlQuery($query, 'unlimited', '0'); |
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$options = array(); |
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foreach ($list as $item) { //removes blanks |
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if ($item) { |
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$item_namespace = explode(':', $item['object']['value']); |
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if (!$restricted || in_array($item_namespace[0], $allowed)) { |
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if (!preg_match('/fedora-system/', $item['object']['value'])) { |
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$options[$item['object']['value']] = $item['title']['value'] . ' ~ ' . $item['object']['value']; |
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} |
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} |
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} |
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} |
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return $options; |
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} |