modules/rdf/rdf.views.inc

<?php
// $Id: rdf.views.inc,v 1.9 2009/03/28 02:37:22 arto Exp $

//////////////////////////////////////////////////////////////////////////////
// Views API hooks

/**
 * Implementation of hook_views_plugins().
 */
function rdf_views_plugins() {
  return array(
    // Style plugins
    'style' => array(
      'rdf' => array(
        'title' => t('RDF Feed'),
        'help' => t('Generates an RSS 1.0-compatible RDF feed from a view.'),
        'handler' => 'views_plugin_style_rdf',
        'path' => drupal_get_path('module', 'rdf') . '/contrib/rdf_views',
        'uses row plugin' => TRUE,
        'uses options' => TRUE,
        'type' => 'feed',
        'help topic' => 'style-rss',
      ),
    ),

    // Row plugins
    'row' => array(
      'node_rdf' => array(
        'title' => t('Node (RDF)'),
        'help' => t('Outputs the node as an RDF 1.0-compatible RDF resource.'),
        'handler' => 'views_plugin_row_node_rdf',
        'path' => drupal_get_path('module', 'rdf') . '/contrib/rdf_views',
        'base' => array('node'), // only works with 'node' as base.
        'uses options' => TRUE,
        'type' => 'feed',
        'help topic' => 'style-node-rss',
      ),
    ),
  );
}

/**
 * Implementation of hook_views_data()
 */
function rdf_views_data() {
  $data = array(
    'rdf_resources' => array(
      // Table info.
      'table' => array(
        'group' => t('RDF'),
        'base' => array(
          'field' => 'rid',
          'title' => t('RDF'),
          'help' => t('RDF meta-data.'),
          'weight' => 0,
        ),
      ),
      // Fields.
      'uri' => array(
        'title' => t('URI'),
        'help' => t('The URI of the RDF resource'),
        'field' => array('handler' => 'views_handler_field'),
        'filter' => array('handler' => 'views_handler_filter_boolean_operator'), 
      ),
    ),
  );
  
  foreach (rdf_get_tables() as $name => $table) {
    $info = rdf_get_repository($name);
    $data[$table] = array(
      // Table info.
      'table' => array(
        'group' => t('@table', array('@table' => $info->title)),
        'join' => array(
          'rdf_resources' => array(
            'left_field' => 'rid',
            'field' => 'sid',
          ),
        ),
      ),
      // Fields.
      /* TODO: 'oid', 'tid', 'lang' */
      'sid' => array(
        'title' => t('Subject'),
        'help' => t("Subject of the RDF statement."),
        'field' => array('handler' => 'views_handler_field'),
      ),
      'uid' => array(
        'title' => t('User'),
        'help' => t("User who created statement."),
        'field' => array('handler' => 'views_handler_field'),
        'relationship' => array(
          'handler' => 'views_handler_relationship',
          'base' => 'users',
          'field' => 'uid',
          'label' => t('user'),
        ),
      ),
      'created' => array(
        'title' => t('Created'),
        'help' => t("Timestamp of the statement."),
        'field' => array('handler' => 'views_handler_field_date'),
        'filter' => array('handler' => 'views_handler_filter_date'),
      ),
      'data' => array(
        'title' => t('Object'),
        'help' => t('RDF Object literal'),
        'field' => array('handler' => 'views_handler_field_rdf_literal'),
        'relationship' => array(
          'handler' => 'views_handler_relationship',
          'base' => 'rdf_resources',
          'base field' => 'uri',
          'field' => 'data',
          'label' => t('@table Resources', array('@table' => $info->title)),
        ),
      ),
    );
    // Add predicate and named graph fields differently as we need to refer back
    // to rdf_resources to pull usable values.
    $data[$table .'_predicate']['table'] = array(
      'group' => t('@table', array('@table' => $info->title)),
      'join' => array(
        'rdf_resources' => array(
          'left_table' => $table,
          'left_field' => 'pid',
          'table' => 'rdf_resources',
          'field' => 'rid',
        ),
      ),
    );
     $data[$table .'_predicate']['uri'] = array(
        'title' => t('Predicate'),
        'help' => t("The RDF statement's predicate."),
        'field' => array('handler' => 'views_handler_field'),
        'filter' => array('handler' => 'views_handler_filter_rdf_predicate'),
    );
    $data[$table .'_context']['table'] = array(
      'group' => t('@table', array('@table' => $info->title)),
      'join' => array(
        'rdf_resources' => array(
          'left_table' => $table,
          'left_field' => 'gid',
          'table' => 'rdf_resources',
          'field' => 'rid',
        ),
      ),
    );
     $data[$table .'_context']['uri'] = array(
        'title' => t('Named graph'),
        'help' => t("The RDF statement's named graph."),
        'field' => array('handler' => 'views_handler_field'),
        'filter' => array('handler' => 'views_handler_filter_rdf_context'),
    );
  }
  return $data;
}

function rdf_views_handlers() {
  return array(
    'info' => array('path' => drupal_get_path('module', 'rdf') . '/contrib/rdf_views'),
    'handlers' => array(
      'views_handler_filter_rdf_predicate' => array(
        'parent' => 'views_handler_filter_in_operator',
      ),
      'views_handler_filter_rdf_context' => array(
        'parent' => 'views_handler_filter_in_operator',
      ),
      'views_handler_field_rdf_literal' => array(
        'parent' => 'views_handler_field',
      ),
    ),
  );
}

//////////////////////////////////////////////////////////////////////////////

function rdf_views_get_feeds() {
  $result = db_query("SELECT v.*, vd.* FROM {views_display} vd LEFT JOIN {views_view} v ON vd.vid = v.vid WHERE vd.display_plugin = 'feed'");
  $feeds  = array();
  while ($row = db_fetch_object($result)) {
    $row->display_options = unserialize($row->display_options);
    if (isset($row->display_options['style_plugin']) && $row->display_options['style_plugin'] == 'rdf') {
      $feed_path    = $row->display_options['path'];
      $feed_options = $row->display_options['style_options'];
      $item_plugin  = $row->display_options['row_plugin'];
      $item_options = $row->display_options['row_options'];  

      if ($defaults = db_result(db_query("SELECT vd.display_options FROM {views_display} vd WHERE vd.display_plugin = 'default' AND vd.vid = %d", $row->vid))) {
        $row->display_options = array_merge_recursive(unserialize($defaults), $row->display_options);    
      }

      $feeds['views_' . $row->name] = array(
        'type'        => RDF_RSS_URI,
        'path'        => $feed_path,
        'title'       => $row->display_options['title'],
        'module'      => 'views',
        'callback'    => NULL, // N/A
        'enabled'     => TRUE, // TODO: only if the view itself is enabled
      );
    }
  }
  return $feeds;
}

function rdf_views_get_feed_settings($feed_id, array $defaults = array()) {
  $feed_id   = is_object($feed_id) ? $feed_id->id : $feed_id;
  $view_name = substr($feed_id, strlen('views_'));
  $result    = db_query("SELECT vd.vid, vd.id, vd.display_options FROM {views_view} v LEFT JOIN {views_display} vd ON v.vid = vd.vid WHERE v.name = '%s' AND vd.display_plugin = 'feed'", $view_name);
  while ($row = db_fetch_object($result)) {
    $row->display_options = unserialize($row->display_options);
    if (isset($row->display_options['style_plugin']) && $row->display_options['style_plugin'] == 'rdf') {
      return array_merge((array)$row->display_options['style_options'], (array)$row->display_options['row_options']);
    }
  }
  return $defaults;
}

function rdf_views_set_feed_settings($feed_id, array $settings) {
  $feed_id   = is_object($feed_id) ? $feed_id->id : $feed_id;
  $view_name = substr($feed_id, strlen('views_'));
  $result    = db_query("SELECT vd.vid, vd.id, vd.display_options FROM {views_view} v LEFT JOIN {views_display} vd ON v.vid = vd.vid WHERE v.name = '%s' AND vd.display_plugin = 'feed'", $view_name);
  while ($row = db_fetch_object($result)) {
    $row->display_options = unserialize($row->display_options);
    if (isset($row->display_options['style_plugin']) && $row->display_options['style_plugin'] == 'rdf') {
      $item_options = array_intersect_key($settings, array('item_length' => '', 'author_property' => '', 'author_value' => '', 'date_timezone' => '', 'date_timezone_dst' => '', 'date_timezone_name' => ''));
      $feed_options = array_diff_key($settings, $item_options);
      if (($row->display_options['style_options'] != $feed_options) || ($row->display_options['row_options'] != $item_options)) {
        $row->display_options['style_options'] = $feed_options;
        $row->display_options['row_options']   = $item_options;
        return db_query("UPDATE {views_display} vd SET vd.display_options = '%s' WHERE vd.vid = %d AND vd.id = '%s'", serialize($row->display_options), $row->vid, $row->id);
      }
      return TRUE;
    }
  }
  return FALSE;
}
1	<?php
2	// $Id: rdf.views.inc,v 1.9 2009/03/28 02:37:22 arto Exp $
3
4	//////////////////////////////////////////////////////////////////////////////
5	// Views API hooks
6
7	/**
8	* Implementation of hook_views_plugins().
9	*/
10	function rdf_views_plugins() {
11	return array(
12	// Style plugins
13	'style' => array(
14	'rdf' => array(
15	'title' => t('RDF Feed'),
16	'help' => t('Generates an RSS 1.0-compatible RDF feed from a view.'),
17	'handler' => 'views_plugin_style_rdf',
18	'path' => drupal_get_path('module', 'rdf') . '/contrib/rdf_views',
19	'uses row plugin' => TRUE,
20	'uses options' => TRUE,
21	'type' => 'feed',
22	'help topic' => 'style-rss',
23	),
24	),
25
26	// Row plugins
27	'row' => array(
28	'node_rdf' => array(
29	'title' => t('Node (RDF)'),
30	'help' => t('Outputs the node as an RDF 1.0-compatible RDF resource.'),
31	'handler' => 'views_plugin_row_node_rdf',
32	'path' => drupal_get_path('module', 'rdf') . '/contrib/rdf_views',
33	'base' => array('node'), // only works with 'node' as base.
34	'uses options' => TRUE,
35	'type' => 'feed',
36	'help topic' => 'style-node-rss',
37	),
38	),
39	);
40	}
41
42	/**
43	* Implementation of hook_views_data()
44	*/
45	function rdf_views_data() {
46	$data = array(
47	'rdf_resources' => array(
48	// Table info.
49	'table' => array(
50	'group' => t('RDF'),
51	'base' => array(
52	'field' => 'rid',
53	'title' => t('RDF'),
54	'help' => t('RDF meta-data.'),
55	'weight' => 0,
56	),
57	),
58	// Fields.
59	'uri' => array(
60	'title' => t('URI'),
61	'help' => t('The URI of the RDF resource'),
62	'field' => array('handler' => 'views_handler_field'),
63	'filter' => array('handler' => 'views_handler_filter_boolean_operator'),
64	),
65	),
66	);
67
68	foreach (rdf_get_tables() as $name => $table) {
69	$info = rdf_get_repository($name);
70	$data[$table] = array(
71	// Table info.
72	'table' => array(
73	'group' => t('@table', array('@table' => $info->title)),
74	'join' => array(
75	'rdf_resources' => array(
76	'left_field' => 'rid',
77	'field' => 'sid',
78	),
79	),
80	),
81	// Fields.
82	/* TODO: 'oid', 'tid', 'lang' */
83	'sid' => array(
84	'title' => t('Subject'),
85	'help' => t("Subject of the RDF statement."),
86	'field' => array('handler' => 'views_handler_field'),
87	),
88	'uid' => array(
89	'title' => t('User'),
90	'help' => t("User who created statement."),
91	'field' => array('handler' => 'views_handler_field'),
92	'relationship' => array(
93	'handler' => 'views_handler_relationship',
94	'base' => 'users',
95	'field' => 'uid',
96	'label' => t('user'),
97	),
98	),
99	'created' => array(
100	'title' => t('Created'),
101	'help' => t("Timestamp of the statement."),
102	'field' => array('handler' => 'views_handler_field_date'),
103	'filter' => array('handler' => 'views_handler_filter_date'),
104	),
105	'data' => array(
106	'title' => t('Object'),
107	'help' => t('RDF Object literal'),
108	'field' => array('handler' => 'views_handler_field_rdf_literal'),
109	'relationship' => array(
110	'handler' => 'views_handler_relationship',
111	'base' => 'rdf_resources',
112	'base field' => 'uri',
113	'field' => 'data',
114	'label' => t('@table Resources', array('@table' => $info->title)),
115	),
116	),
117	);
118	// Add predicate and named graph fields differently as we need to refer back
119	// to rdf_resources to pull usable values.
120	$data[$table .'_predicate']['table'] = array(
121	'group' => t('@table', array('@table' => $info->title)),
122	'join' => array(
123	'rdf_resources' => array(
124	'left_table' => $table,
125	'left_field' => 'pid',
126	'table' => 'rdf_resources',
127	'field' => 'rid',
128	),
129	),
130	);
131	$data[$table .'_predicate']['uri'] = array(
132	'title' => t('Predicate'),
133	'help' => t("The RDF statement's predicate."),
134	'field' => array('handler' => 'views_handler_field'),
135	'filter' => array('handler' => 'views_handler_filter_rdf_predicate'),
136	);
137	$data[$table .'_context']['table'] = array(
138	'group' => t('@table', array('@table' => $info->title)),
139	'join' => array(
140	'rdf_resources' => array(
141	'left_table' => $table,
142	'left_field' => 'gid',
143	'table' => 'rdf_resources',
144	'field' => 'rid',
145	),
146	),
147	);
148	$data[$table .'_context']['uri'] = array(
149	'title' => t('Named graph'),
150	'help' => t("The RDF statement's named graph."),
151	'field' => array('handler' => 'views_handler_field'),
152	'filter' => array('handler' => 'views_handler_filter_rdf_context'),
153	);
154	}
155	return $data;
156	}
157
158	function rdf_views_handlers() {
159	return array(
160	'info' => array('path' => drupal_get_path('module', 'rdf') . '/contrib/rdf_views'),
161	'handlers' => array(
162	'views_handler_filter_rdf_predicate' => array(
163	'parent' => 'views_handler_filter_in_operator',
164	),
165	'views_handler_filter_rdf_context' => array(
166	'parent' => 'views_handler_filter_in_operator',
167	),
168	'views_handler_field_rdf_literal' => array(
169	'parent' => 'views_handler_field',
170	),
171	),
172	);
173	}
174
175	//////////////////////////////////////////////////////////////////////////////
176
177	function rdf_views_get_feeds() {
178	$result = db_query("SELECT v., vd. FROM {views_display} vd LEFT JOIN {views_view} v ON vd.vid = v.vid WHERE vd.display_plugin = 'feed'");
179	$feeds = array();
180	while ($row = db_fetch_object($result)) {
181	$row->display_options = unserialize($row->display_options);
182	if (isset($row->display_options['style_plugin']) && $row->display_options['style_plugin'] == 'rdf') {
183	$feed_path = $row->display_options['path'];
184	$feed_options = $row->display_options['style_options'];
185	$item_plugin = $row->display_options['row_plugin'];
186	$item_options = $row->display_options['row_options'];
187
188	if ($defaults = db_result(db_query("SELECT vd.display_options FROM {views_display} vd WHERE vd.display_plugin = 'default' AND vd.vid = %d", $row->vid))) {
189	$row->display_options = array_merge_recursive(unserialize($defaults), $row->display_options);
190	}
191
192	$feeds['views_' . $row->name] = array(
193	'type' => RDF_RSS_URI,
194	'path' => $feed_path,
195	'title' => $row->display_options['title'],
196	'module' => 'views',
197	'callback' => NULL, // N/A
198	'enabled' => TRUE, // TODO: only if the view itself is enabled
199	);
200	}
201	}
202	return $feeds;
203	}
204
205	function rdf_views_get_feed_settings($feed_id, array $defaults = array()) {
206	$feed_id = is_object($feed_id) ? $feed_id->id : $feed_id;
207	$view_name = substr($feed_id, strlen('views_'));
208	$result = db_query("SELECT vd.vid, vd.id, vd.display_options FROM {views_view} v LEFT JOIN {views_display} vd ON v.vid = vd.vid WHERE v.name = '%s' AND vd.display_plugin = 'feed'", $view_name);
209	while ($row = db_fetch_object($result)) {
210	$row->display_options = unserialize($row->display_options);
211	if (isset($row->display_options['style_plugin']) && $row->display_options['style_plugin'] == 'rdf') {
212	return array_merge((array)$row->display_options['style_options'], (array)$row->display_options['row_options']);
213	}
214	}
215	return $defaults;
216	}
217
218	function rdf_views_set_feed_settings($feed_id, array $settings) {
219	$feed_id = is_object($feed_id) ? $feed_id->id : $feed_id;
220	$view_name = substr($feed_id, strlen('views_'));
221	$result = db_query("SELECT vd.vid, vd.id, vd.display_options FROM {views_view} v LEFT JOIN {views_display} vd ON v.vid = vd.vid WHERE v.name = '%s' AND vd.display_plugin = 'feed'", $view_name);
222	while ($row = db_fetch_object($result)) {
223	$row->display_options = unserialize($row->display_options);
224	if (isset($row->display_options['style_plugin']) && $row->display_options['style_plugin'] == 'rdf') {
225	$item_options = array_intersect_key($settings, array('item_length' => '', 'author_property' => '', 'author_value' => '', 'date_timezone' => '', 'date_timezone_dst' => '', 'date_timezone_name' => ''));
226	$feed_options = array_diff_key($settings, $item_options);
227	if (($row->display_options['style_options'] != $feed_options) \|\| ($row->display_options['row_options'] != $item_options)) {
228	$row->display_options['style_options'] = $feed_options;
229	$row->display_options['row_options'] = $item_options;
230	return db_query("UPDATE {views_display} vd SET vd.display_options = '%s' WHERE vd.vid = %d AND vd.id = '%s'", serialize($row->display_options), $row->vid, $row->id);
231	}
232	return TRUE;
233	}
234	}
235	return FALSE;
236	}