modules/filefield/filefield.install

<?php
// $Id: filefield.install,v 1.36 2009/05/29 22:32:23 quicksketch Exp $
/**
 * @file
 * FileField: Defines a CCK file field type.
 *
 * Uses content.module to store the fid and field specific metadata,
 * and Drupal's {files} table to store the actual file data.
 */

include_once('field_file.inc');

/**
 * Implementation of hook_install().
 */
function filefield_install() {
  drupal_load('module', 'content');
  content_notify('install', 'filefield');
}

/**
 * Implementation of hook_uninstall().
 */
function filefield_uninstall() {
  drupal_load('module', 'content');
  content_notify('uninstall', 'filefield');
}

/**
 * Implementation of hook_enable().
 */
function filefield_enable() {
  drupal_load('module', 'content');
  content_notify('enable', 'filefield');
}

/**
 * Implementation of hook_disable().
 */
function filefield_disable() {
  drupal_load('module', 'content');
  content_notify('disable', 'filefield');
}

/**
 * Implementation of hook_requirements().
 *
 * Display information about getting upload progress bars working.
 */
function filefield_requirements($phase) {
  $requirements = array();
  // Ensure translations don't break at install time
  $t = get_t();

  // Report Drupal version
  if ($phase == 'runtime') {
    $implementation = filefield_progress_implementation();
    $apache = strpos($_SERVER['SERVER_SOFTWARE'], 'Apache') !== FALSE;
    $fastcgi = strpos($_SERVER['SERVER_SOFTWARE'], 'mod_fastcgi') !== FALSE || strpos($_SERVER["SERVER_SOFTWARE"], 'mod_fcgi') !== FALSE;
    $php_52 = version_compare(phpversion(), '5.2.0', '>');
    $description = NULL;
    if (!$apache || !$php_52) {
      $value = $t('Not enabled');
      $description = $t('Your server is not capable of displaying file upload progress. File upload progress requires PHP 5.2 and an Apache server.');
      $severity = REQUIREMENT_INFO;
    }
    elseif ($fastcgi) {
      $value = $t('Not enabled');
      $description = $t('Your server is not capable of displaying file upload progress. File upload progress requires PHP be run with mod_php and not as FastCGI.');
      $severity = REQUIREMENT_INFO;
    }
    elseif (!$implementation && extension_loaded('apc')) {
      $value = $t('Not enabled');
      $description = $t('Your server is capable of displaying file upload progress through APC, but it is not enabled. Add <code>apc.rfc1867 = 1</code> to your php.ini configuration. Alternatively, it is recommended to use <a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress</a>, which supports more than one simultaneous upload.');
      $severity = REQUIREMENT_WARNING;
    }
    elseif (!$implementation) {
      $value = $t('Not enabled');
      $description = t('Your server is capable of displaying file upload progress, but does not have the required libraries. It is recommended to install the <a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress library</a> (preferred) or to install <a href="http://us2.php.net/apc">APC</a>.');
      $severity = REQUIREMENT_WARNING;
    }
    elseif ($implementation == 'apc') {
      $value = $t('Enabled (<a href="http://php.net/manual/en/apc.configuration.php#ini.apc.rfc1867">APC RFC1867</a>)');
      $description = t('Your server is capable of displaying file upload progress using APC RFC1867. Note that only one upload at a time is supported. It is recommended to use the <a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress library</a> if possible.');
      $severity = REQUIREMENT_OK;
    }
    elseif ($implementation == 'uploadprogress') {
      $value = $t('Enabled (<a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress</a>)');
      $severity = REQUIREMENT_OK;
    }
    $requirements['filefield_progress'] = array(
      'title' => $t('Upload progress'),
      'value' => $value,
      'severity' => $severity,
      'description' => $description,
    );
  }

  return $requirements;
}

/**
 * Implementation of hook_update_last_removed().
 */
function filefield_update_last_removed() {
  return 3;
}

/**
 * Upgrade FileField to Drupal 6.
 */
function filefield_update_6001() {
  if ($abort = content_check_update('filefield')) {
    return $abort;
  }

  $ret = array();
  include_once(drupal_get_path('module', 'content') .'/includes/content.admin.inc');

  // Rename the field type from file to filefield. adhere to module namespace.
  $ret[] = update_sql("UPDATE {content_node_field} SET type = 'filefield', module = 'filefield', active = 1 WHERE type = 'file'");
  // Rename default widget to filefield_widget. adhere to module namespace.
  $ret[] = update_sql("UPDATE {content_node_field_instance} SET widget_type = 'filefield_widget', widget_module = 'filefield', widget_active = 1 WHERE widget_type = 'file'");

  // Update list default value and force list settings.
  $result = db_query("SELECT * FROM {content_node_field} WHERE type = 'filefield'");
  while ($field = db_fetch_object($result)) {
    $updated = FALSE;
    $field_settings = unserialize($field->global_settings);
    if (!isset($field_settings['list_default']) || !is_numeric($field_settings['list_default'])) {
      $field_settings['list_default'] = 1;
      $updated = TRUE;
    }

    // Set behavior to match old force_list behavior.
    if (!empty($field_settings['force_list'])) {
      $field_settings['list_default'] = 1;
      $field_settings['force_list_default'] = 1;
      $updated = TRUE;
    }
    if ($updated) {
      db_query("UPDATE {content_node_field} SET global_settings = '%s' WHERE field_name = '%s'", serialize($field_settings), $field->field_name);
    }
  }

  // Re-enable all the FileFields on the site.
  content_associate_fields('filefield');

  // Build a list of fields that need data updating.
  $fields = array();
  foreach (content_types_install() as $type_name => $type_fields) {
    foreach ($type_fields as $field) {
      if ($field['type'] == 'filefield') {
        // We only process a given field once.
        $fields[$field['field_name']] = $field;
      }
    }
  }

  // Update database storage (add data column, remove description, set NOT NULL).
  foreach ($fields as $field) {
    $new_field = $field;

    // Setup the previous definition.
    $field['columns']['description'] = array('type' => 'varchar');
    $field['columns']['fid']['not null'] = TRUE;
    $field['columns']['list']['not null'] = TRUE;
    unset($field['columns']['data']);

    // Setup the new definition.
    $new_field['columns']['data'] = array('type' => 'text', 'serialize' => TRUE);
    $new_field['columns']['fid']['not null'] = FALSE;
    $new_field['columns']['list']['size'] = 'tiny';
    $new_field['columns']['list']['not null'] = FALSE;
    unset($new_field['columns']['description']);

    content_alter_db($field, $new_field);
  }

  // Build a batch that migrates the data in each filefield
  $batch = array(
    'title' => t('Migrating filefield values'),
    'operations' => array(),
    'file' => drupal_get_path('module', 'filefield') .'/filefield.install',
  );
  foreach ($fields as $field_name => $field) {
    if ($field['type'] == 'filefield') {
      $batch['operations'][] = array('_filefield_update_6001_move_operation', array($field));
      $batch['operations'][] = array('_filefield_update_6001_drop_operation', array($field));
    }
  }
  batch_set($batch);


  // Clear caches.
  cache_clear_all('*', content_cache_tablename(), TRUE);
  cache_clear_all('*', 'cache', TRUE);
  return $ret;
}

/**
 * Migrate field settings from 'force_list_default' and 'show_description'.
 */
function filefield_update_6100() {
  $ret = array();

  module_load_include('inc', 'content', 'includes/content.crud');

  $fields = content_fields();
  foreach ($fields as $field) {
    if ($field['type'] == 'filefield') {
      if (isset($field['force_list_default'])) {
        $field['list_field'] = !$field['force_list_default'];
      }
      if (isset($field['show_description'])) {
        $field['description_field'] = $field['show_description'];
      }
      _content_field_write($field);
      $ret[] = array('success' => TRUE, 'query' => t('The File field %field has been updated with new settings.', array('%field' => $field['field_name'])));
    }
  }

  cache_clear_all('*', content_cache_tablename(), TRUE);
  cache_clear_all('*', 'cache', TRUE);

  return $ret;
}

/**
 * Set fid to NULL where files have been deleted.
 *
 * This is a double-cleanup from Drupal 5 versions, where fid used to be 0 for
 * empty rows or sometimes referred to a nonexistent FID altogether.
 */
function filefield_update_6101() {
  $ret = array();

  module_load_include('inc', 'content', 'includes/content.crud');

  $fields = content_fields();

  foreach ($fields as $field) {
    if ($field['type'] == 'filefield') {
      $db_info = content_database_info($field);
      if (isset($db_info['columns']['fid'])) {
        $table = $db_info['table'];
        $fid_column = $db_info['columns']['fid']['column'];
        $list_column = $db_info['columns']['list']['column'];
        $ret[] = update_sql("UPDATE {" . $table . "} SET $fid_column = NULL, $list_column = NULL WHERE $fid_column NOT IN (SELECT fid FROM {files})");
      }
    }
  }

  return $ret;
}

/**
 * Fix corrupted serialized data in the "data" column.
 */
function filefield_update_6102(&$sandbox) {
  // Update removed. This turned out to be a bug in CCK core, so it is being
  // fixed directly in CCK rather than in FileField.
  // See http://drupal.org/node/407446.
  return array();
}

/**
 * Convert "Extensible File" to a normal "File" widget.
 */
function filefield_update_6103() {
  $ret = array();

  $ret[] = update_sql("UPDATE {". content_instance_tablename() ."} SET widget_type = 'filefield_widget' WHERE widget_type = 'filefield_combo'");

  cache_clear_all('*', content_cache_tablename(), TRUE);
  cache_clear_all('*', 'cache', TRUE);

  return $ret;
}

/**
 * Delete the filefield_token module entry in the system table.
 */
function filefield_update_6104() {
  $ret = array();

  $ret[] = update_sql("DELETE FROM {system} WHERE type = 'module' AND name = 'filefield_token'");

  return $ret;
}

/**
 * Move the list and descriptions column into the serialized data column.
 */
function _filefield_update_6001_move_operation($field, &$context) {
  // Setup the first through
  if (!isset($context['sandbox']['progress'])) {
    $db_info = content_database_info($field);
    $context['sandbox']['db_info'] = $db_info;
    $context['sandbox']['table'] = $db_info['table'];
    $context['sandbox']['col_data'] = $db_info['columns']['data']['column'];
    $context['sandbox']['col_desc'] = $db_info['columns']['description']['column'];
    $context['sandbox']['max'] = db_result(db_query("SELECT COUNT(*) FROM {". $db_info['table'] ."}"));
    $context['sandbox']['progress'] = 0;
    $context['sandbox']['current_node'] = 0;
  }

  // Work our way through the field values 50 rows at a time.
  $limit = 50;
  $result = db_query_range("SELECT * FROM {{$context['sandbox']['table']}} WHERE vid > %d ORDER BY nid ASC", $context['sandbox']['current_node'], 0, $limit);
  while ($row = db_fetch_array($result)) {
    // Try to unserialize the data column.
    if (!empty($row[$context['sandbox']['col_data']])) {
      $data = unserialize($row[$context['sandbox']['col_data']]);
    }
    if (empty($data)) {
      $data = array();
    }

    // Copy move the values from the columns into the array...
    $data['description'] = $row[$context['sandbox']['col_desc']];

    // ...serialize it and store it back to the db.
    db_query("UPDATE {{$context['sandbox']['table']}} SET {$context['sandbox']['col_data']} = '%s' WHERE vid = %d", serialize($data), $row['vid']);

    // Update our progress information.
    $context['sandbox']['progress']++;
    $context['sandbox']['current_node'] = $row['vid'];
  }

  // Inform the batch engine that we are not finished,
  // and provide an estimation of the completion level we reached.
  if ($context['sandbox']['progress'] != $context['sandbox']['max']) {
    $context['finished'] = $context['sandbox']['progress'] / $context['sandbox']['max'];
  }
}

/**
 * Drop the list and description columns.
 */
function _filefield_update_6001_drop_operation($field, &$context) {
  $ret = array();
  $db_info = content_database_info($field);
  // TODO: Now that the data has been migrated we can drop the columns.
  db_drop_field($ret, $db_info['table'], $db_info['columns']['description']['column']);
  $context['finished'] = 1;
}
1	<?php
2	// $Id: filefield.install,v 1.36 2009/05/29 22:32:23 quicksketch Exp $
3	/**
4	* @file
5	* FileField: Defines a CCK file field type.
6	*
7	* Uses content.module to store the fid and field specific metadata,
8	* and Drupal's {files} table to store the actual file data.
9	*/
10
11	include_once('field_file.inc');
12
13	/**
14	* Implementation of hook_install().
15	*/
16	function filefield_install() {
17	drupal_load('module', 'content');
18	content_notify('install', 'filefield');
19	}
20
21	/**
22	* Implementation of hook_uninstall().
23	*/
24	function filefield_uninstall() {
25	drupal_load('module', 'content');
26	content_notify('uninstall', 'filefield');
27	}
28
29	/**
30	* Implementation of hook_enable().
31	*/
32	function filefield_enable() {
33	drupal_load('module', 'content');
34	content_notify('enable', 'filefield');
35	}
36
37	/**
38	* Implementation of hook_disable().
39	*/
40	function filefield_disable() {
41	drupal_load('module', 'content');
42	content_notify('disable', 'filefield');
43	}
44
45	/**
46	* Implementation of hook_requirements().
47	*
48	* Display information about getting upload progress bars working.
49	*/
50	function filefield_requirements($phase) {
51	$requirements = array();
52	// Ensure translations don't break at install time
53	$t = get_t();
54
55	// Report Drupal version
56	if ($phase == 'runtime') {
57	$implementation = filefield_progress_implementation();
58	$apache = strpos($_SERVER['SERVER_SOFTWARE'], 'Apache') !== FALSE;
59	$fastcgi = strpos($_SERVER['SERVER_SOFTWARE'], 'mod_fastcgi') !== FALSE \|\| strpos($_SERVER["SERVER_SOFTWARE"], 'mod_fcgi') !== FALSE;
60	$php_52 = version_compare(phpversion(), '5.2.0', '>');
61	$description = NULL;
62	if (!$apache \|\| !$php_52) {
63	$value = $t('Not enabled');
64	$description = $t('Your server is not capable of displaying file upload progress. File upload progress requires PHP 5.2 and an Apache server.');
65	$severity = REQUIREMENT_INFO;
66	}
67	elseif ($fastcgi) {
68	$value = $t('Not enabled');
69	$description = $t('Your server is not capable of displaying file upload progress. File upload progress requires PHP be run with mod_php and not as FastCGI.');
70	$severity = REQUIREMENT_INFO;
71	}
72	elseif (!$implementation && extension_loaded('apc')) {
73	$value = $t('Not enabled');
74	$description = $t('Your server is capable of displaying file upload progress through APC, but it is not enabled. Add <code>apc.rfc1867 = 1</code> to your php.ini configuration. Alternatively, it is recommended to use <a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress</a>, which supports more than one simultaneous upload.');
75	$severity = REQUIREMENT_WARNING;
76	}
77	elseif (!$implementation) {
78	$value = $t('Not enabled');
79	$description = t('Your server is capable of displaying file upload progress, but does not have the required libraries. It is recommended to install the <a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress library</a> (preferred) or to install <a href="http://us2.php.net/apc">APC</a>.');
80	$severity = REQUIREMENT_WARNING;
81	}
82	elseif ($implementation == 'apc') {
83	$value = $t('Enabled (<a href="http://php.net/manual/en/apc.configuration.php#ini.apc.rfc1867">APC RFC1867</a>)');
84	$description = t('Your server is capable of displaying file upload progress using APC RFC1867. Note that only one upload at a time is supported. It is recommended to use the <a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress library</a> if possible.');
85	$severity = REQUIREMENT_OK;
86	}
87	elseif ($implementation == 'uploadprogress') {
88	$value = $t('Enabled (<a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress</a>)');
89	$severity = REQUIREMENT_OK;
90	}
91	$requirements['filefield_progress'] = array(
92	'title' => $t('Upload progress'),
93	'value' => $value,
94	'severity' => $severity,
95	'description' => $description,
96	);
97	}
98
99	return $requirements;
100	}
101
102	/**
103	* Implementation of hook_update_last_removed().
104	*/
105	function filefield_update_last_removed() {
106	return 3;
107	}
108
109	/**
110	* Upgrade FileField to Drupal 6.
111	*/
112	function filefield_update_6001() {
113	if ($abort = content_check_update('filefield')) {
114	return $abort;
115	}
116
117	$ret = array();
118	include_once(drupal_get_path('module', 'content') .'/includes/content.admin.inc');
119
120	// Rename the field type from file to filefield. adhere to module namespace.
121	$ret[] = update_sql("UPDATE {content_node_field} SET type = 'filefield', module = 'filefield', active = 1 WHERE type = 'file'");
122	// Rename default widget to filefield_widget. adhere to module namespace.
123	$ret[] = update_sql("UPDATE {content_node_field_instance} SET widget_type = 'filefield_widget', widget_module = 'filefield', widget_active = 1 WHERE widget_type = 'file'");
124
125	// Update list default value and force list settings.
126	$result = db_query("SELECT * FROM {content_node_field} WHERE type = 'filefield'");
127	while ($field = db_fetch_object($result)) {
128	$updated = FALSE;
129	$field_settings = unserialize($field->global_settings);
130	if (!isset($field_settings['list_default']) \|\| !is_numeric($field_settings['list_default'])) {
131	$field_settings['list_default'] = 1;
132	$updated = TRUE;
133	}
134
135	// Set behavior to match old force_list behavior.
136	if (!empty($field_settings['force_list'])) {
137	$field_settings['list_default'] = 1;
138	$field_settings['force_list_default'] = 1;
139	$updated = TRUE;
140	}
141	if ($updated) {
142	db_query("UPDATE {content_node_field} SET global_settings = '%s' WHERE field_name = '%s'", serialize($field_settings), $field->field_name);
143	}
144	}
145
146	// Re-enable all the FileFields on the site.
147	content_associate_fields('filefield');
148
149	// Build a list of fields that need data updating.
150	$fields = array();
151	foreach (content_types_install() as $type_name => $type_fields) {
152	foreach ($type_fields as $field) {
153	if ($field['type'] == 'filefield') {
154	// We only process a given field once.
155	$fields[$field['field_name']] = $field;
156	}
157	}
158	}
159
160	// Update database storage (add data column, remove description, set NOT NULL).
161	foreach ($fields as $field) {
162	$new_field = $field;
163
164	// Setup the previous definition.
165	$field['columns']['description'] = array('type' => 'varchar');
166	$field['columns']['fid']['not null'] = TRUE;
167	$field['columns']['list']['not null'] = TRUE;
168	unset($field['columns']['data']);
169
170	// Setup the new definition.
171	$new_field['columns']['data'] = array('type' => 'text', 'serialize' => TRUE);
172	$new_field['columns']['fid']['not null'] = FALSE;
173	$new_field['columns']['list']['size'] = 'tiny';
174	$new_field['columns']['list']['not null'] = FALSE;
175	unset($new_field['columns']['description']);
176
177	content_alter_db($field, $new_field);
178	}
179
180	// Build a batch that migrates the data in each filefield
181	$batch = array(
182	'title' => t('Migrating filefield values'),
183	'operations' => array(),
184	'file' => drupal_get_path('module', 'filefield') .'/filefield.install',
185	);
186	foreach ($fields as $field_name => $field) {
187	if ($field['type'] == 'filefield') {
188	$batch['operations'][] = array('_filefield_update_6001_move_operation', array($field));
189	$batch['operations'][] = array('_filefield_update_6001_drop_operation', array($field));
190	}
191	}
192	batch_set($batch);
193
194
195	// Clear caches.
196	cache_clear_all('*', content_cache_tablename(), TRUE);
197	cache_clear_all('*', 'cache', TRUE);
198	return $ret;
199	}
200
201	/**
202	* Migrate field settings from 'force_list_default' and 'show_description'.
203	*/
204	function filefield_update_6100() {
205	$ret = array();
206
207	module_load_include('inc', 'content', 'includes/content.crud');
208
209	$fields = content_fields();
210	foreach ($fields as $field) {
211	if ($field['type'] == 'filefield') {
212	if (isset($field['force_list_default'])) {
213	$field['list_field'] = !$field['force_list_default'];
214	}
215	if (isset($field['show_description'])) {
216	$field['description_field'] = $field['show_description'];
217	}
218	_content_field_write($field);
219	$ret[] = array('success' => TRUE, 'query' => t('The File field %field has been updated with new settings.', array('%field' => $field['field_name'])));
220	}
221	}
222
223	cache_clear_all('*', content_cache_tablename(), TRUE);
224	cache_clear_all('*', 'cache', TRUE);
225
226	return $ret;
227	}
228
229	/**
230	* Set fid to NULL where files have been deleted.
231	*
232	* This is a double-cleanup from Drupal 5 versions, where fid used to be 0 for
233	* empty rows or sometimes referred to a nonexistent FID altogether.
234	*/
235	function filefield_update_6101() {
236	$ret = array();
237
238	module_load_include('inc', 'content', 'includes/content.crud');
239
240	$fields = content_fields();
241
242	foreach ($fields as $field) {
243	if ($field['type'] == 'filefield') {
244	$db_info = content_database_info($field);
245	if (isset($db_info['columns']['fid'])) {
246	$table = $db_info['table'];
247	$fid_column = $db_info['columns']['fid']['column'];
248	$list_column = $db_info['columns']['list']['column'];
249	$ret[] = update_sql("UPDATE {" . $table . "} SET $fid_column = NULL, $list_column = NULL WHERE $fid_column NOT IN (SELECT fid FROM {files})");
250	}
251	}
252	}
253
254	return $ret;
255	}
256
257	/**
258	* Fix corrupted serialized data in the "data" column.
259	*/
260	function filefield_update_6102(&$sandbox) {
261	// Update removed. This turned out to be a bug in CCK core, so it is being
262	// fixed directly in CCK rather than in FileField.
263	// See http://drupal.org/node/407446.
264	return array();
265	}
266
267	/**
268	* Convert "Extensible File" to a normal "File" widget.
269	*/
270	function filefield_update_6103() {
271	$ret = array();
272
273	$ret[] = update_sql("UPDATE {". content_instance_tablename() ."} SET widget_type = 'filefield_widget' WHERE widget_type = 'filefield_combo'");
274
275	cache_clear_all('*', content_cache_tablename(), TRUE);
276	cache_clear_all('*', 'cache', TRUE);
277
278	return $ret;
279	}
280
281	/**
282	* Delete the filefield_token module entry in the system table.
283	*/
284	function filefield_update_6104() {
285	$ret = array();
286
287	$ret[] = update_sql("DELETE FROM {system} WHERE type = 'module' AND name = 'filefield_token'");
288
289	return $ret;
290	}
291
292	/**
293	* Move the list and descriptions column into the serialized data column.
294	*/
295	function _filefield_update_6001_move_operation($field, &$context) {
296	// Setup the first through
297	if (!isset($context['sandbox']['progress'])) {
298	$db_info = content_database_info($field);
299	$context['sandbox']['db_info'] = $db_info;
300	$context['sandbox']['table'] = $db_info['table'];
301	$context['sandbox']['col_data'] = $db_info['columns']['data']['column'];
302	$context['sandbox']['col_desc'] = $db_info['columns']['description']['column'];
303	$context['sandbox']['max'] = db_result(db_query("SELECT COUNT(*) FROM {". $db_info['table'] ."}"));
304	$context['sandbox']['progress'] = 0;
305	$context['sandbox']['current_node'] = 0;
306	}
307
308	// Work our way through the field values 50 rows at a time.
309	$limit = 50;
310	$result = db_query_range("SELECT * FROM {{$context['sandbox']['table']}} WHERE vid > %d ORDER BY nid ASC", $context['sandbox']['current_node'], 0, $limit);
311	while ($row = db_fetch_array($result)) {
312	// Try to unserialize the data column.
313	if (!empty($row[$context['sandbox']['col_data']])) {
314	$data = unserialize($row[$context['sandbox']['col_data']]);
315	}
316	if (empty($data)) {
317	$data = array();
318	}
319
320	// Copy move the values from the columns into the array...
321	$data['description'] = $row[$context['sandbox']['col_desc']];
322
323	// ...serialize it and store it back to the db.
324	db_query("UPDATE {{$context['sandbox']['table']}} SET {$context['sandbox']['col_data']} = '%s' WHERE vid = %d", serialize($data), $row['vid']);
325
326	// Update our progress information.
327	$context['sandbox']['progress']++;
328	$context['sandbox']['current_node'] = $row['vid'];
329	}
330
331	// Inform the batch engine that we are not finished,
332	// and provide an estimation of the completion level we reached.
333	if ($context['sandbox']['progress'] != $context['sandbox']['max']) {
334	$context['finished'] = $context['sandbox']['progress'] / $context['sandbox']['max'];
335	}
336	}
337
338	/**
339	* Drop the list and description columns.
340	*/
341	function _filefield_update_6001_drop_operation($field, &$context) {
342	$ret = array();
343	$db_info = content_database_info($field);
344	// TODO: Now that the data has been migrated we can drop the columns.
345	db_drop_field($ret, $db_info['table'], $db_info['columns']['description']['column']);
346	$context['finished'] = 1;
347	}