/**
* Main search function
* SOLR search
* @param bool $no_record
* @return json
* @internal param string $class class restriction
*/
function filter($no_log = false)
{
header('Cache-Control: no-cache, must-revalidate');
header('Content-type: application/json');
set_exception_handler('json_exception_handler');
$data = json_decode(file_get_contents("php://input"), true);
$filters = isset($data['filters']) ? $data['filters'] : false;
// experiment with delayed response time
// sleep(2);
$this->load->library('solr');
//restrict to default class
$default_class = isset($filters['class']) ? $filters['class'] : 'collection';
if (!is_array($default_class)) {
$this->solr->setOpt('fq', '+class:' . $default_class);
}
$this->solr->setFilters($filters);
//test
// $this->solr->setOpt('fq', '+spatial_coverage_centres:*');
//not recording a hit for the quick search done for advanced search
if (!$no_log) {
$event = array('event' => 'portal_search', 'ip' => $this->input->ip_address(), 'user_agent' => $this->input->user_agent());
if ($filters) {
$event = array_merge($event, $filters);
}
ulog_terms($event, 'portal');
}
//returns this set of Facets
if ($default_class == 'activity') {
foreach ($this->components['activity_facet'] as $facet) {
if ($facet != 'temporal' && $facet != 'spatial') {
$this->solr->setFacetOpt('field', $facet);
}
}
} elseif ($default_class == 'collection') {
foreach ($this->components['facet'] as $facet) {
if ($facet != 'temporal' && $facet != 'spatial') {
$this->solr->setFacetOpt('field', $facet);
}
}
} else {
foreach ($this->components['facet'] as $facet) {
if ($facet != 'temporal' && $facet != 'spatial') {
$this->solr->setFacetOpt('field', $facet);
}
}
}
//high level subjects facet
// $subjects = $this->config->item('subjects');
// foreach ($subjects as $subject) {
// $fq = '(';
// foreach($subject['codes'] as $code) {
// $fq .= 'subject_vocab_uri:("http://purl.org/au-research/vocabulary/anzsrc-for/2008/'.$code.'") ';
// }
// $fq.=')';
// $this->solr->setFacetOpt('query',
// '{! key='.url_title($subject['display'], '-', true).'}'.$fq
// );
// }
//temporal facet
$this->solr->setFacetOpt('field', 'earliest_year')->setFacetOpt('field', 'latest_year')->setOpt('f.earliest_year.facet.sort', 'count asc')->setOpt('f.latest_year.facet.sort', 'count');
//flags, these are the only fields that will be returned in the search
$this->solr->setOpt('fl', 'id,type,title,description,group,slug,spatial_coverage_centres,spatial_coverage_polygons,administering_institution,researchers,matching_identifier_count,list_description');
//highlighting
$this->solr->setOpt('hl', 'true');
$this->solr->setOpt('hl.fl', 'identifier_value_search, related_party_one_search, related_party_multi_search, related_activity_search, related_service_search, group_search, related_info_search, subject_value_resolved_search, description_value, date_to, date_from, citation_info_search');
$this->solr->setOpt('hl.simple.pre', '<b>');
$this->solr->setOpt('hl.simple.post', '</b>');
$this->solr->setOpt('hl.snippets', '2');
//extract sentence
$this->solr->setOpt('hl.fragmenter', 'regex');
$this->solr->setOpt('hl.fragsize', '140');
$this->solr->setOpt('hl.regex.slop', '1.0');
$this->solr->setOpt('hl.regex.pattern', "\\w[^.!?]{400,600}[.!?]");
$this->solr->setOpt('hl.bs.type', "SENTENCE");
$this->solr->setOpt('hl.bs.maxScan', "30");
// $this->solr->setOpt('hl.useFastVectorHighlighter', "true");
//experiment hl attrs
// $this->solr->setOpt('hl.alternateField', 'description');
// $this->solr->setOpt('hl.alternateFieldLength', '100');
// $this->solr->setOpt('hl.fragsize', '300');
// $this->solr->setOpt('hl.snippets', '100');
$this->solr->setFacetOpt('mincount', '1');
$this->solr->setFacetOpt('limit', '100');
$this->solr->setFacetOpt('sort', 'count');
$result = $this->solr->executeSearch(true);
//fuzzy search
if ($this->solr->getNumFound() == 0 && isset($filters['q'])) {
$new_search_term_array = explode(' ', escapeSolrValue($filters['q']));
$new_search_term = '';
foreach ($new_search_term_array as $c) {
$new_search_term .= $c . '~0.7 ';
}
// $new_search_term = $data['search_term'].'~0.7';
$this->solr->setOpt('q', 'fulltext:(' . $new_search_term . ') OR simplified_title:(' . iconv('UTF-8', 'ASCII//TRANSLIT', $new_search_term) . ')');
$result = $this->solr->executeSearch(true);
if ($this->solr->getNumFound() > 0) {
$result['fuzzy_result'] = true;
}
}
$result['url'] = $this->solr->constructFieldString();
echo json_encode($result);
}
function record_hit($page = 'home')
{
$event = array('event' => 'portal_page', 'page' => $page, 'ip' => $this->input->ip_address(), 'user_agent' => $this->input->user_agent());
ulog_terms($event, 'portal');
}