Code
/
islandora
7
0
Fork 0
Code Issues Pull Requests 1 Projects Releases Wiki Activity
Browse Source

Merge pull request #380 from jordandukart/7.x-derivatives 

7.x derivatives
pull/387/merge
Jonathan Green 11 years ago
parent
bab41123c2 b5b691f8aa
commit
043610db6e
7 changed files with 732 additions and 0 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 105
      includes/derivatives.inc
  2. 74
      islandora.api.php
  3. 1
      islandora.info
  4. 47
      islandora.module
  5. 296
      tests/derivatives.test
  6. 7
      tests/islandora_derivatives_test.info
  7. 202
      tests/islandora_derivatives_test.module

105
includes/derivatives.inc
Unescape View File

@ -0,0 +1,105 @@
<?php
/**
* @file
* Defines functions used when constructing derivatives.
*/
/**
* Kicks off derivative functions based upon hooks and conditions.
*
* @param AbstractObject $object
* An AbstractObject representing a FedoraObject.
* @param array $options
* An array of parameters containing:
* - force: Bool denoting whether we are forcing the generation of
* derivatives.
* - source_dsid: (Optional) String of the datastream id we are generating
* from or NULL if it's the object itself.
* - destination_dsid: (Optional) String of the datastream id that is being
* created. To be used in the UI.
*
* @return array
* An array of messages describing the outcome of the derivative events.
* Each individual message array has the following structure:
* - success: Bool denoting whether the operation was successful.
* - messages: An array structure containing:
* - message: A string passed through t() describing the
* outcome of the operation.
* - message_sub: (Optional) Substitutions to be passed along to t() or
* watchdog.
* - type: A string denoting whether the output is to be
* drupal_set_messaged (dsm) or watchdogged (watchdog).
* - severity: (Optional) A severity level / status to be used when
* logging messages. Uses the defaults of drupal_set_message and
* watchdog if not defined.
*/
function islandora_do_derivatives(AbstractObject $object, array $options) {
$options += array(
'force' => FALSE,
);
$hooks = islandora_invoke_hook_list(ISLANDORA_DERVIATIVE_CREATION_HOOK, $object->models, array());
uasort($hooks, 'drupal_sort_weight');
$results = array();
if (array_key_exists('source_dsid', $options)) {
$hooks = array_filter($hooks, function($filter_hook) use($options) {
return array_key_exists('source_dsid', $filter_hook) &&
$filter_hook['source_dsid'] == $options['source_dsid'];
});
}
if (array_key_exists('destination_dsid', $options)) {
$hooks = array_filter($hooks, function($filter_hook) use($options) {
return array_key_exists('destination_dsid', $filter_hook) &&
$filter_hook['destination_dsid'] == $options['destination_dsid'];
});
}
foreach ($hooks as $hook) {
if (isset($hook['file'])) {
require_once $hook['file'];
}
foreach ($hook['function'] as $function) {
$logging = call_user_func($function, $object, $options['force']);
if (!empty($logging)) {
$results[] = $logging;
}
}
}
return $results;
}
/**
* Handles the logging of derivative messages.
*
* @param array $logging_results
* An array of messages describing the outcome of the derivative events.
* Each individual message array has the following structure:
* - success: Bool denoting whether the operation was successful.
* - messages: An array structure containing:
* - message: A string passed through t() describing the
* outcome of the operation.
* - message_sub: (Optional) Substitutions to be passed along to t() or
* watchdog.
* - type: A string denoting whether the output is to be
* drupal_set_messaged (dsm) or watchdogged (watchdog).
* - severity: (Optional) A severity level / status to be used when
* logging messages. Uses the defaults of drupal_set_message and
* watchdog if not defined.
*/
function islandora_derivative_logging(array $logging_results) {
foreach ($logging_results as $result) {
foreach ($result['messages'] as $message) {
if ($message['type'] === 'dsm') {
drupal_set_message(filter_xss(format_string($message['message'], isset($message['message_sub']) ? $message['message_sub'] : array())), isset($message['severity']) ? $message['severity'] : 'status');
}
else {
// We know what we are doing here. Passing through the translated
// message and the substitutions needed. We are using
// call_user_func until such time as the @ignore changes
// are merged into the standard release for Coder.
call_user_func('watchdog', $message['message'], isset($message['message_sub']) ? $message['message_sub'] : array(), isset($message['severity']) ? $message['severity'] : WATCHDOG_NOTICE);
}
}
}
}

74
islandora.api.php
Unescape View File

@ -572,3 +572,77 @@ function hook_islandora_overview_object_alter(AbstractObject &$object, &$output)
function hook_CMODEL_PID_islandora_overview_object_alter(AbstractObject &$object, &$output) {
$output = $output . drupal_render(drupal_get_form('some_form', $object));
}
/*
* Defines derivative functions to be executed based on certain conditions.
*
* This hook fires when an object/datastream is ingested or a datastream is
* modified.
*
* @return array
* An array containing an entry for each derivative to be created. Each entry
* is an array of parameters containing:
* - force: Bool denoting whether we are forcing the generation of
* derivatives.
* - source_dsid: (Optional) String of the datastream id we are generating
* from or NULL if it's the object itself.
* - destination_dsid: (Optional) String of the datastream id that is being
* created. To be used in the UI.
* - weight: A string denoting the weight of the function. This value is
* sorted upon to run functions in order.
* - function: An array of function(s) to be ran when constructing
* derivatives. Functions that are defined to be called for derivation
* creation must have the following structure:
* module_name_derivative_creation_function($object, $force = FALSE)
* These functions must return an array in the structure of:
* - success: Bool denoting whether the operation was successful.
* - messages: An array structure containing:
* - message: A string passed through t() describing the
* outcome of the operation.
* - message_sub: (Optional) Substitutions to be passed along to t() or
* watchdog.
* - type: A string denoting whether the output is to be
* drupal_set_messaged (dsm) or watchdogged (watchdog).
* - severity: (Optional) A severity level / status to be used when
* logging messages. Uses the defaults of drupal_set_message and
* watchdog if not defined.
* - file: A string denoting the path to the file where the function
* is being called from.
*/
function hook_islandora_derivative() {
return array(
array(
'source_dsid' => 'OBJ',
'destination_dsid' => 'DERIV',
'weight' => '0',
'function' => array(
'islandora_derivatives_test_create_deriv_datastream',
),
),
array(
'source_dsid' => 'SOMEWEIRDDATASTREAM',
'destination_dsid' => 'STANLEY',
'weight' => '-1',
'function' => array(
'islandora_derivatives_test_create_some_weird_datastream',
),
),
array(
'source_dsid' => NULL,
'destination_dsid' => 'NOSOURCE',
'weight' => '-3',
'function' => array(
'islandora_derivatives_test_create_nosource_datastream',
),
),
);
}
/**
* Content model specific version of hook_islandora_derivative().
*
* @see hook_islandora_derivative()
*/
function hook_CMODEL_PID_islandora_derivative() {
}

1
islandora.info
Unescape View File

@ -18,4 +18,5 @@ files[] = tests/ingest.test
files[] = tests/hooked_access.test
files[] = tests/islandora_manage_permissions.test
files[] = tests/datastream_versions.test
files[] = tests/derivatives.test
php = 5.3

47
islandora.module
Unescape View File

@ -53,6 +53,7 @@ define('ISLANDORA_DATASTREAM_INGESTED_HOOK', 'islandora_datastream_ingested');
define('ISLANDORA_DATASTREAM_MODIFIED_HOOK', 'islandora_datastream_modified');
define('ISLANDORA_DATASTREAM_PURGED_HOOK', 'islandora_datastream_purged');
define('ISLANDORA_INGEST_STEP_HOOK', 'islandora_ingest_steps');
define('ISLANDORA_DERVIATIVE_CREATION_HOOK', 'islandora_derivative');
// Autocomplete paths.
define('ISLANDORA_CONTENT_MODELS_AUTOCOMPLETE', 'islandora/autocomplete/content-models');
@ -1505,3 +1506,49 @@ function islandora_islandora_basic_collection_get_query_filters() {
));
}
}
/**
* Implements hook_islandora_object_ingested().
*
* On object ingestion we call the case of source_dsid being NULL only as
* the islandora_islandora_datastream_ingested hook will handle the cases
* where specific values of source_dsid can occur.
*/
function islandora_islandora_object_ingested(AbstractObject $object) {
module_load_include('inc', 'islandora', 'includes/derivatives');
$logging_results = islandora_do_derivatives($object, array(
'source_dsid' => NULL,
));
islandora_derivative_logging($logging_results);
}
/**
* Implements hook_islandora_datastream_ingested().
*
* When a datastream is ingested we filter the derivatives on source_dsid being
* equal to the current ingested datastream's id.
*/
function islandora_islandora_datastream_ingested(AbstractObject $object, AbstractDatastream $datastream) {
module_load_include('inc', 'islandora', 'includes/derivatives');
$logging_results = islandora_do_derivatives($object, array(
'source_dsid' => $datastream->id,
));
islandora_derivative_logging($logging_results);
}
/**
* Implements hook_islandora_datastream_modified().
*
* When a datastream is modified we filter the derivatives on source_dsid being
* equal to the current ingested datastream's id. Force is set to TRUE such that
* existing derivatives will be updated to reflect the change in the source.
*/
function islandora_islandora_datastream_modified(AbstractObject $object, AbstractDatastream $datastream) {
module_load_include('inc', 'islandora', 'includes/derivatives');
$logging_results = islandora_do_derivatives($object, array(
'source_dsid' => $datastream->id,
'force' => TRUE,
));
islandora_derivative_logging($logging_results);
}

296
tests/derivatives.test
Unescape View File

@ -0,0 +1,296 @@
<?php
/**
* @file
* Tests to see if the hooks get called when appropriate.
*
* In the test module 'islandora_derivatives_test' there are implementations
* of hooks being tested. These implementations modifies the session, and
* that's how we test if the hook gets called.
*
* To make sense of these tests reference islandora_derivatives_test.module.
*/
class IslandoraDerivativesTestCase extends IslandoraWebTestCase {
/**
* Gets info to display to describe this test.
*
* @see IslandoraWebTestCase::getInfo()
*/
public static function getInfo() {
return array(
'name' => 'Islandora Derivative Generation',
'description' => 'Ensure that the derivative generation hooks return appropriate results.',
'group' => 'Islandora',
);
}
/**
* Creates an admin user and a connection to a fedora repository.
*
* @see IslandoraWebTestCase::setUp()
*/
public function setUp() {
parent::setUp(
array(
'islandora_derivatives_test',
)
);
$url = variable_get('islandora_base_url', 'http://localhost:8080/fedora');
$this->connection = new RepositoryConnection($url, $this->admin->name, $this->admin->pass);
$this->connection->reuseConnection = TRUE;
$this->api = new FedoraApi($this->connection);
$this->cache = new SimpleCache();
$this->repository = new FedoraRepository($this->api, $this->cache);
$this->pid = $this->randomName() . ":" . $this->randomName();
}
/**
* Free any objects/resources created for this test.
*
* @see IslandoraWebTestCase::tearDown()
*/
public function tearDown() {
$tuque = islandora_get_tuque_connection();
parent::tearDown();
}
/**
* Tests that the islandora_islandora_object_ingested hook gets fired.
*/
public function testDerivativeOnIngest() {
global $_islandora_derivative_test_ingest_method;
$_islandora_derivative_test_ingest_method = 'modifyDatastream';
$tuque = islandora_get_tuque_connection();
$object = $tuque->repository->constructObject($this->pid);
$object->models = array(
'some:cmodel',
);
$dsid = 'OBJ';
$ds = $object->constructDatastream($dsid);
$ds->label = 'Test';
$ds->content = 'test';
$object->ingestDatastream($ds);
$tuque->repository->ingestObject($object);
$this->assertDatastreams($object, array(
'RELS-EXT',
'DC',
'OBJ',
'DERIV',
'NOSOURCE',
));
$this->assertEqual('ingestDatastream', $_islandora_derivative_test_ingest_method, 'The expected ingest method is "ingestDatastream", got "' . $_islandora_derivative_test_ingest_method . '".');
$this->assertEqual('test some string', $object['DERIV']->content, 'The expected content of the DERIV datastream is "test some string", got "' . $object['DERIV']->content . '".');
$this->assertEqual('NOSOURCE', $object['NOSOURCE']->content, 'The expected content of the NOSOURCE datastream is "NOSOURCE", got "' . $object['NOSOURCE']->content . '".');
}
/**
* Tests the ingest method when when forcing on existing datastreams.
*/
public function testDerivativeOnForceExistingDatastream() {
global $_islandora_derivative_test_ingest_method;
$_islandora_derivative_test_ingest_method = 'ingestDatastream';
$object = $this->constructBaseObject();
$object = $this->constructDERIVDatastream($object);
$this->constructNOSOURCEDatastream($object);
$islandora_object = islandora_object_load($this->pid);
islandora_do_derivatives($islandora_object, array(
'force' => TRUE,
));
$this->assertEqual('modifyDatastream', $_islandora_derivative_test_ingest_method, 'The expected ingest method is "modifyDatastream", got "' . $_islandora_derivative_test_ingest_method . '".');
$this->assertEqual('FORCEFULLY APPENDING CONTENT TO test', $islandora_object['DERIV']->content, 'The expected content of the DERIV datastream is "FORCEFULLY APPENDING CONTENT TO test", got "' . $islandora_object['DERIV']->content . '".');
}
/**
* Tests the ingest method when forcing on non-existing datastreams.
*/
public function testDerivativeOnForceNonExistingDatastream() {
global $_islandora_derivative_test_ingest_method;
$_islandora_derivative_test_ingest_method = 'modifyDatastream';
$this->constructBaseObject();
$object = islandora_object_load($this->pid);
islandora_do_derivatives($object, array(
'force' => TRUE,
));
$this->assertEqual('ingestDatastream', $_islandora_derivative_test_ingest_method, 'The expected ingest method is "ingestDatastream", got "' . $_islandora_derivative_test_ingest_method . '".');
$this->assertEqual('test some string', $object['DERIV']->content, 'The expected content of the DERIV datastream is "test some string", got "' . $object['DERIV']->content . '".');
}
/**
* Tests the islandora_datastream_modified hook when there are existing DSes.
*/
public function testDerivativeOnModifyExistingDatastream() {
global $_islandora_derivative_test_ingest_method;
$_islandora_derivative_test_ingest_method = 'ingestDatastream';
$object = $this->constructBaseObject();
$this->constructDERIVDatastream($object);
// Need to do this as Tuque caches.
$connection = islandora_get_tuque_connection();
$connection->cache->resetCache();
$islandora_object = islandora_object_load($this->pid);
$changed_content = 'islandora beast';
$islandora_object['OBJ']->content = $changed_content;
$this->assertEqual('modifyDatastream', $_islandora_derivative_test_ingest_method, 'The expected ingest method is "modifyDatastream", got "' . $_islandora_derivative_test_ingest_method . '".');
$this->assertEqual('FORCEFULLY APPENDING CONTENT TO ' . $changed_content, $islandora_object['DERIV']->content, 'The expected content of the DERIV datastream is "FORCEFULLY APPENDING CONTENT TO islandora beast", got "' . $islandora_object['DERIV']->content . '".');
}
/**
* Tests islandora_datastream_modified hook when there are no existing DSes.
*/
public function testDerivativeOnModifyNonExistingDatastream() {
global $_islandora_derivative_test_ingest_method;
$_islandora_derivative_test_ingest_method = 'modifyDatastream';
$this->constructBaseObject();
// Need to do this as Tuque caches.
$connection = islandora_get_tuque_connection();
$connection->cache->resetCache();
$islandora_object = islandora_object_load($this->pid);
$changed_content = 'islandora beast';
$islandora_object['OBJ']->content = $changed_content;
$this->assertEqual('ingestDatastream', $_islandora_derivative_test_ingest_method, 'The expected ingest method is "ingestDatastream", got "' . $_islandora_derivative_test_ingest_method . '".');
$this->assertEqual($changed_content . ' some string', $islandora_object['DERIV']->content, 'The expected content of the DERIV datastream is "islandora beast string", got "' . $islandora_object['DERIV']->content . '".');
}
/**
* Tests derivative hook filtering based upon source_dsid.
*/
public function testDerivativeFilteringOnSourceDSID() {
global $_islandora_derivative_test_derivative_functions;
$_islandora_derivative_test_derivative_functions = array();
$this->constructBaseObject();
$object = islandora_object_load($this->pid);
islandora_do_derivatives($object, array(
'source_dsid' => 'OBJ',
));
$this->assertEqual(1, count($_islandora_derivative_test_derivative_functions), 'Expected 1 derivative function for the source_dsid of "OBJ", got ' . count($_islandora_derivative_test_derivative_functions) . '.');
$called_function = (string) reset($_islandora_derivative_test_derivative_functions);
$this->assertEqual('islandora_derivatives_test_create_deriv_datastream', $called_function, 'Expected derivative function is "islandora_derivatives_test_create_deriv_datastream", got "' . $called_function . '".');
// Reset the derivative functions array as we are going to use it again.
$_islandora_derivative_test_derivative_functions = array();
islandora_do_derivatives($object, array(
'source_dsid' => 'SOMEWEIRDDATASTREAM',
));
$this->assertEqual(1, count($_islandora_derivative_test_derivative_functions), 'Expected 1 derivative function for the source_dsid of "SOMEWEIRDDATASTREAM", got ' . count($_islandora_derivative_test_derivative_functions) . '.');
$called_function = (string) reset($_islandora_derivative_test_derivative_functions);
$this->assertEqual('islandora_derivatives_test_create_some_weird_datastream', $called_function, 'Expected derivative function is "islandora_derivatives_test_create_some_weird_datastream", got "' . $called_function . '".');
}
/**
* Tests that only functions were the source_dsid is NULL are fired.
*/
public function testNULLSourceDSID() {
global $_islandora_derivative_test_derivative_functions;
$_islandora_derivative_test_derivative_functions = array();
$this->constructBaseObject();
$object = islandora_object_load($this->pid);
islandora_do_derivatives($object, array(
'source_dsid' => NULL,
));
$this->assertDatastreams($object, array(
'DC',
'RELS-EXT',
'OBJ',
'NOSOURCE',
));
$this->assertEqual(1, count($_islandora_derivative_test_derivative_functions), 'Expected 1 derivative function for the source_dsid of "NULL", got ' . count($_islandora_derivative_test_derivative_functions) . '.');
$called_function = (string) reset($_islandora_derivative_test_derivative_functions);
$this->assertEqual('islandora_derivatives_test_create_nosource_datastream', $called_function, 'Expected derivative function is "islandora_derivatives_test_create_nosource_datastream", got "' . $called_function . '".');
$this->assertEqual('NOSOURCE', $object['NOSOURCE']->content, 'The expected content of the NOSOURCE datastream is "NOSOURCE", got "' . $object['NOSOURCE']->content . '".');
}
/**
* Tests that when no source_dsid all derivative functions are called.
*/
public function testNoSourceDSIDNoForce() {
global $_islandora_derivative_test_derivative_functions;
$_islandora_derivative_test_derivative_functions = array();
$this->constructBaseObject();
$object = islandora_object_load($this->pid);
islandora_do_derivatives($object, array());
$this->assertDatastreams($object, array(
'DC',
'RELS-EXT',
'OBJ',
'DERIV',
'NOSOURCE',
));
$this->assertEqual(3, count($_islandora_derivative_test_derivative_functions), 'Expected 3 derivative functions when there is no source_dsid, got ' . count($_islandora_derivative_test_derivative_functions) . '.');
}
/**
* Tests that when no source_dsid all derivative functions are called.
*/
public function testNoSourceDSIDForce() {
global $_islandora_derivative_test_derivative_functions;
$_islandora_derivative_test_derivative_functions = array();
$this->constructBaseObject();
$object = islandora_object_load($this->pid);
islandora_do_derivatives($object, array(
'force' => TRUE,
));
$this->assertDatastreams($object, array(
'DC',
'RELS-EXT',
'OBJ',
'DERIV',
'NOSOURCE',
));
$this->assertEqual(3, count($_islandora_derivative_test_derivative_functions), 'Expected 3 derivative functions when there is no source_dsid, got ' . count($_islandora_derivative_test_derivative_functions) . '.');
}
/**
* Helper function that will construct a base object.
*/
public function constructBaseObject() {
$object = $this->repository->constructObject($this->pid);
$object->models = array(
'some:cmodel',
);
$dsid = 'OBJ';
$ds = $object->constructDatastream($dsid);
$ds->label = 'Test';
$ds->content = 'test';
$object->ingestDatastream($ds);
$this->repository->ingestObject($object);
return $object;
}
/**
* Helper function to construct the DERIV datastream without firing hooks.
*
* @param AbstractObject $object
* An AbstractObject representing a FedoraObject.
*
* @return AbstractObject
* The modified AbstractObject.
*/
public function constructDERIVDatastream(AbstractObject $object) {
$dsid = 'DERIV';
$ds = $object->constructDatastream($dsid);
$ds->label = 'Test';
$ds->content = 'test some string';
$object->ingestDatastream($ds);
return $object;
}
/**
* Helper function to construct the NOSOURCE datastream without firing hooks.
*
* @param AbstractObject $object
* An AbstractObject representing a FedoraObject.
*
* @return AbstractObject
* The modified AbstractObject.
*/
public function constructNOSOURCEDatastream(AbstractObject $object) {
$dsid = 'NOSOURCE';
$ds = $object->constructDatastream($dsid);
$ds->label = 'Test';
$ds->content = 'NOSOURCE';
$object->ingestDatastream($ds);
return $object;
}
}

7
tests/islandora_derivatives_test.info
Unescape View File

@ -0,0 +1,7 @@
name = Islandora Derivatives Generation testing
description = Tests derivative generation hooks. Do not enable.
core = 7.x
package = Testing
hidden = TRUE
files[] = islandora_derivatives_test.module
dependencies[] = islandora

202
tests/islandora_derivatives_test.module
Unescape View File

@ -0,0 +1,202 @@
<?php
/**
* @file
* Tests for derivative generation.
*/
/**
* Implements hook_islandora_CMODEL_PID_derivative().
*/
function islandora_derivatives_test_some_cmodel_islandora_derivative() {
return array(
array(
'source_dsid' => 'OBJ',
'destination_dsid' => 'DERIV',
'weight' => '0',
'function' => array(
'islandora_derivatives_test_create_deriv_datastream',
),
),
array(
'source_dsid' => 'SOMEWEIRDDATASTREAM',
'destination_dsid' => 'STANLEY',
'weight' => '-1',
'function' => array(
'islandora_derivatives_test_create_some_weird_datastream',
),
),
array(
'source_dsid' => NULL,
'destination_dsid' => 'NOSOURCE',
'weight' => '-3',
'function' => array(
'islandora_derivatives_test_create_nosource_datastream',
),
),
);
}
/**
* Creates the DERIV datastream for use in testing.
*
* @param AbstractObject $object
* An AbstractObject representing a Fedora object.
* @param bool $force
* Whether or not derivative generation is to be forced.
* @return array
* An array detailing the success of the operation.
*
* @see hook_islandora_derivative()
*/
function islandora_derivatives_test_create_deriv_datastream(AbstractObject $object, $force = FALSE) {
global $_islandora_derivative_test_derivative_functions;
$_islandora_derivative_test_derivative_functions[] = 'islandora_derivatives_test_create_deriv_datastream';
$return = '';
if (!isset($object['DERIV']) || (isset($object['DERIV']) && $force === TRUE)) {
if ($force !== TRUE || !isset($object['DERIV'])) {
$deriv_string = $object['OBJ']->content . ' some string';
}
else {
$deriv_string = "FORCEFULLY APPENDING CONTENT TO " . $object['OBJ']->content;
}
$added_successfully = islandora_derivatives_test_add_datastream($object, 'DERIV', $deriv_string);
if ($added_successfully !== TRUE) {
$return = islandora_derivatives_test_failed_adding($added_successfully);
}
else {
$return = array(
'success' => TRUE,
'messages' => array(
array(
'message' => t('The DERIV datastream was added successfully for @pid!'),
'message_sub' => array('@pid' => $object->id),
'type' => 'dsm',
),
),
);
}
return $return;
}
}
/**
* Stub function that used only for datastream filtering counts.
*
* @param AbstractObject $object
* An AbstractObject representing a Fedora object.
* @param bool $force
* Whether the derivatives are being forcefully generated or not.
*/
function islandora_derivatives_test_create_some_weird_datastream(AbstractObject $object, $force = FALSE) {
global $_islandora_derivative_test_derivative_functions;
// Add to the global that we got to this function.
$_islandora_derivative_test_derivative_functions[] = 'islandora_derivatives_test_create_some_weird_datastream';
}
/**
* Creates the NOSOURCE datastream for use in testing.
*
* @param AbstractObject $object
* An AbstractObject representing a Fedora object.
* @param bool $force
* Whether or not derivative generation is to be forced.
* @return array
* An array detailing the success of the operation.
*
* @see hook_islandora_derivative()
*/
function islandora_derivatives_test_create_nosource_datastream(AbstractObject $object, $force = FALSE) {
global $_islandora_derivative_test_derivative_functions;
$_islandora_derivative_test_derivative_functions[] = 'islandora_derivatives_test_create_nosource_datastream';
$return = '';
if (!isset($object['NOSOURCE']) || (isset($object['NOSOURCE']) && $force === TRUE)) {
if ($force !== TRUE || !isset($object['NOSOURCE'])) {
$deriv_string = 'NOSOURCE';
}
else {
$deriv_string = "FORCEFULLY APPENDING CONTENT TO " . $object['NOSOURCE']->content;
}
$added_successfully = islandora_derivatives_test_add_datastream($object, 'NOSOURCE', $deriv_string);
if ($added_successfully !== TRUE) {
$return = islandora_derivatives_test_failed_adding($added_successfully);
}
else {
$return = array(
'success' => TRUE,
'messages' => array(
array(
'message' => t('The DERIV datastream was added successfully for @pid!'),
'message_sub' => array('@pid' => $object->id),
'type' => 'dsm',
),
),
);
}
return $return;
}
}
/**
* Helper function that adds/modifies the datastream to the object in testing.
*
* @param AbstractObject $object
* An AbstractObject representing a Fedora object.
* @param string $dsid
* The datastream id for which we are adding/modifying.
* @param string $deriv_string
* The content of the datastream we are adding.
*
* @return bool|string
* A bool if the operation was successfully, the error message otherwise.
*/
function islandora_derivatives_test_add_datastream(AbstractObject $object, $dsid, $deriv_string) {
global $_islandora_derivative_test_ingest_method;
try {
$ingest = !isset($object[$dsid]);
if ($ingest) {
$ds = $object->constructDatastream($dsid, 'M');
$ds->label = $dsid;
}
else {
$ds = $object[$dsid];
}
$ds->content = $deriv_string;
if ($ingest) {
$_islandora_derivative_test_ingest_method = 'ingestDatastream';
$object->ingestDatastream($ds);
}
else {
$_islandora_derivative_test_ingest_method = 'modifyDatastream';
}
return TRUE;
}
catch (exception $e) {
$message = $e->getMessage();
return $message;
}
}
/**
* Returns a message if we failed to add a derivative.
*
* @see hook_islandora_derivative()
*
* @param string $message
* The error message to be returned back.
*
* @return array
* An array describing the outcome of our failure.
*/
function islandora_derivatives_test_failed_adding($message) {
return array(
'success' => FALSE,
'messages' => array(
array(
'message' => $message,
'type' => 'watchdog',
'severity' => WATCHDOG_ERROR,
),
),
);
}
Write Preview
Loading…
Cancel
Save