function apachesolr_term_indexing_callback in Apache Solr Search 6.3
Callback that converts term field into an array
1 string reference to 'apachesolr_term_indexing_callback'
- taxonomy_apachesolr_field_mappings in ./
apachesolr.module - Implements hook_apachesolr_field_mappings() on behalf of taxonomy module.
File
- ./
apachesolr.index.inc, line 931 - Functions related to Apache Solr indexing operations.
Code
function apachesolr_term_indexing_callback($node, $field_name, $index_key, $field_info) {
// Keep ancestors cached
static $ancestors = array();
$fields = array();
$vocab_names = array();
$field_terms = array();
$vid = $field_info['field']['vid'];
foreach ($node->taxonomy as $tid => $term) {
if ($term->vid == $vid) {
$field_terms[$tid] = $term;
}
}
if (!empty($field_terms) && function_exists('taxonomy_get_parents_all')) {
foreach ($field_terms as $term) {
// Triple indexing of tids lets us do effecient searches (on tid)
// and do accurate per field or per-vocabulary faceting.
// By including the ancestors to a term in the index we make
// sure that searches for general categories match specific
// categories, e.g. Fruit -> apple, a search for fruit will find
// content categorized with apple.
if (!isset($ancestors[$term->tid])) {
$ancestors[$term->tid] = taxonomy_get_parents_all($term->tid);
}
foreach ($ancestors[$term->tid] as $ancestor) {
// Index parent term against the field. Note that this happens
// regardless of whether the facet is set to show as a hierarchy or not.
// We would need a separate field if we were to index terms without any
// hierarchy at all.
$fields[] = array(
'key' => $index_key,
'value' => $ancestor->tid,
);
$fields[] = array(
'key' => 'tid',
'value' => $ancestor->tid,
);
$fields[] = array(
'key' => 'im_vid_' . $ancestor->vid,
'value' => $ancestor->tid,
);
$name = apachesolr_clean_text($ancestor->name);
$vocab_names[$ancestor->vid][] = $name;
// We index each name as a string for cross-site faceting
// using the vocab name rather than vid in field construction .
$fields[] = array(
'key' => 'sm_vid_' . apachesolr_vocab_name($ancestor->vid),
'value' => $name,
);
}
}
// Index the term names into a text field for MLT queries and keyword searching.
foreach ($vocab_names as $vid => $names) {
$fields[] = array(
'key' => 'tm_vid_' . $vid . '_names',
'value' => implode(' ', $names),
);
}
}
return $fields;
}