function search($dbpath, $querystring, $offset = 0, $pagesize = 10)
{
// offset - defines starting point within result set
// pagesize - defines number of records to retrieve
// Open the database we're going to search.
$db = new XapianDatabase($dbpath);
### Start of example code.
// Set up a QueryParser with a stemmer and suitable prefixes
$queryparser = new XapianQueryParser();
$queryparser->set_stemmer(new XapianStem("en"));
$queryparser->set_stemming_strategy(XapianQueryParser::STEM_SOME);
$queryparser->add_prefix("title", "S");
$queryparser->add_prefix("description", "XD");
$queryparser->add_boolean_prefix("material", "XM");
// And parse the query
$query = $queryparser->parse_query($querystring);
### End of example code.
// Use an Enquire object on the database to run the query
$enquire = new XapianEnquire($db);
$enquire->set_query($query);
// Set up a spy to inspect the MAKER value at slot 1
$spy = new XapianValueCountMatchSpy(1);
$enquire->add_matchspy($spy);
// Retrieve the matches and compute start and end points
$matches = $enquire->get_mset($offset, $pagesize);
$start = $matches->begin();
$end = $matches->end();
// Use an array to record the DocIds of each match
$docids = array();
while (!$start->equals($end)) {
// retrieve the document and its data
$doc = $start->get_document();
$fields = json_decode($doc->get_data());
$position = $start->get_rank() + 1;
// record the docid
$docid = $start->get_docid();
$docids[] = $docid;
// display the results
printf("%d: #%03d %s\n", $position, $docid, $fields->TITLE);
// increment MSet iterator and our counter
$start->next();
}
// Parse and display the spy values
$spy_start = $spy->values_begin();
$spy_end = $spy->values_end();
while (!$spy_start->equals($spy_end)) {
print sprintf("Facet: %s; count: %d\n", $spy_start->get_term(), $spy_start->get_termfreq());
$spy_start->next();
}
// Finally, make sure we log the query and displayed results
log_info(sprintf("xapian.search:'%s'[%d:%d] = %s", $querystring, $offset, $offset + $pagesize, implode(" ", $docids)));
}
/**
* @brief 搜索用户帖子
* @param userid $Uid
*/
public static function searchByUid($Uid, $page = 1, $pagesize = 30, $max = 0)
{
$max = $max > 0 ? $max : self::$_MAX;
$page = empty($page) ? 1 : $page;
if (!self::_connect() || empty($Uid)) {
return false;
}
$queryparser = new XapianQueryParser();
$queryparser->add_prefix('userId', "UID");
$queryparser->set_database(self::$_INSTANCE);
$query = $queryparser->parse_query("userId:{$Uid}");
$enquire = new XapianEnquire(self::$_INSTANCE);
$enquire->set_sort_by_value(0);
//排序时间
$enquire->set_query($query);
$matches = $enquire->get_mset(0, $max);
//最多显示300条
$start = $matches->begin();
$end = $matches->end();
$count = $matches->size();
$index = 0;
$re = array();
while (!$start->equals($end)) {
$data = array();
if ($index < $page * $pagesize && $index >= ($page - 1) * $pagesize) {
$doc = $start->get_document();
$result = json_decode($doc->get_data(), true);
$data['puid'] = $result['puid'];
$data['author'] = $result['author'];
$data['title'] = $result['title'];
$data['majory'] = $result['majory'];
$data['majory_id'] = $result['majory_id'];
$data['time_step'] = $result['time_step'];
if (isset($result['diary_book'])) {
$data['diary_book'] = $result['diary_book'];
}
$re[] = $data;
} elseif ($index >= $page * $pagesize) {
break;
}
$start->next();
$index++;
}
return array($re, $count);
}
function run_count()
{
if (!defined('XAPIANDB') || !XAPIANDB) {
return null;
}
$start = getmicrotime();
global $xapiandb;
if (!$xapiandb) {
$xapiandb = new XapianDatabase(XAPIANDB);
}
if (!$this->enquire) {
$this->enquire = new XapianEnquire($xapiandb);
}
$queryparser = new XapianQueryParser();
$queryparser->set_stemming_strategy(QueryParser_STEM_NONE);
$queryparser->set_default_op(Query_OP_AND);
$queryparser->add_prefix("speaker", "speaker:");
$queryparser->add_prefix("major", "major:");
$queryparser->add_prefix('date', 'date:');
$queryparser->add_prefix('batch', 'batch:');
twfy_debug("SEARCH", "query remade -- " . $this->query_remade());
// We rebuild (with query_remade) our query and feed that text string to
// the query parser. This is because the error handling in the query parser
// is a bit knackered, and we want to be sure our highlighting etc. exactly
// matches. XXX don't need to do this for more recent Xapians
$query = $queryparser->parse_query($this->query_remade());
twfy_debug("SEARCH", "queryparser description -- " . $query->get_description());
$this->enquire->set_query($query);
// Set collapsing and sorting
global $PAGE;
$collapsed = false;
foreach ($this->prefixed as $items) {
if ($items[0] == 'groupby') {
$collapsed = true;
if ($items[1] == 'day') {
$this->enquire->set_collapse_key(2);
} else {
if ($items[1] == 'debate') {
$this->enquire->set_collapse_key(3);
} else {
if ($items[1] == 'speech') {
} else {
$PAGE->error_message("Unknown group by '{$items['1']}' ignored");
}
}
}
} elseif ($items[0] == 'bias') {
list($weight, $halflife) = explode(":", $items[1]);
$this->enquire->set_bias($weight, intval($halflife));
} elseif ($items[0] == 'speaker') {
# Don't do any collapsing if we're searching for a person's speeches
$collapsed = true;
}
}
// default to grouping by subdebate, i.e. by page
if (!$collapsed) {
$this->enquire->set_collapse_key(7);
}
$matches = $this->enquire->get_mset(0, 500);
// Take either: 1) the estimate which is sometimes too large or 2) the
// size which is sometimes too low (it is limited to the 500 in the line
// above). We get the exact mset we need later, according to which page
// we are on.
if ($matches->size() < 500) {
$count = $matches->size();
} else {
$count = $matches->get_matches_estimated();
}
$duration = getmicrotime() - $start;
twfy_debug("SEARCH", "Search count took {$duration} seconds.");
return $count;
}
function search($dbpath, $querystring, $materials, $offset = 0, $pagesize = 10)
{
// offset - defines starting point within result set
// pagesize - defines number of records to retrieve
// Open the database we're going to search.
$db = new XapianDatabase($dbpath);
### Start of example code.
// Set up a QueryParser with a stemmer and suitable prefixes
$queryparser = new XapianQueryParser();
$queryparser->set_stemmer(new XapianStem("english"));
$queryparser->set_stem_strategy(XapianQueryParser::STEM_SOME);
$queryparser->add_prefix("title", "S");
$queryparser->add_prefix("description", "XD");
// And parse the query
$query = $queryparser->parse_query($querystring);
if (empty($materials) === false) {
// Filter the results to ones which contain at least one of the
// materials.
$material_queries = array();
// Build a query for each material value
foreach ($materials as $material) {
$material = str_replace("material:", "", $material);
$material_queries[] = new XapianQuery('XM' . strtolower($material));
}
// Combine these queries with an OR operator
$material_query = new XapianQuery(XapianQuery::OP_AND, $material_queries);
// Use the material query to filter the main query
$query = new XapianQuery(XapianQuery::OP_FILTER, $query, $material_query);
}
### End of example code.
// Use an Enquire object on the database to run the query
$enquire = new XapianEnquire($db);
$enquire->set_query($query);
// Set up a spy to inspect the MAKER value at slot 1
$spy = new XapianValueCountMatchSpy(1);
$enquire->add_matchspy($spy);
// Retrieve the matches and compute start and end points
$matches = $enquire->get_mset($offset, $pagesize);
$start = $matches->begin();
$end = $matches->end();
$index = 0;
// Use an array to record the DocIds of each match
$docids = array();
while (!$start->equals($end)) {
// retrieve the document and its data
$doc = $start->get_document();
$fields = json_decode($doc->get_data());
$position = $offset + $index + 1;
// record the docid
$docid = $start->get_docid();
$docids[] = $docid;
// display the results
print sprintf("%d: #%03d %s\n", $position, $docid, $fields->TITLE);
// increment MSet iterator and our counter
$start->next();
$index++;
}
// Parse and display the spy values
$spy_start = $spy->values_begin();
$spy_end = $spy->values_end();
while (!$spy_start->equals($spy_end)) {
print sprintf("Facet: %s; count: %d\n", $spy_start->get_term(), $spy_start->get_termfreq());
$spy_start->next();
}
// Finally, make sure we log the query and displayed results
log_info(sprintf("xapian.search:'%s'[%d:%d] = %s", $querystring, $offset, $offset + $pagesize, implode(" ", $docids)));
}
