如何改进查询,如下所示?
我的索引已完全优化,所有字段都未存储,除了 item_id 是关键字字段。
问题出在“if ($auth) {”部分。如果删除此部分,则搜索时间始终低于 1 秒,但在添加此部分时,搜索时间为 5 秒或更长。显然这是一个更复杂的查询,但我不能没有它。我需要该部分中的逻辑来仅获取用户有权查看的搜索结果。我知道放缓是在搜索工作本身,因为如果我删除“if ($authQuery) { $query->addSubquery($authQuery, true); }” 行,搜索会非常快。
我试图在“if ($auth) {”部分中实现以下逻辑:
lucene 字段 gi_aro、gc_aro、i_access 和 c_access 都只包含一个整数
if ((array_in({gi_aro}, $gmid) OR {i_access} <= $gid)
AND (array_in({gc_aro}, $gmid) {OR c_access} <= $gid)) {
include in search results
}
{} = lucene 字段
// keywords query
$keywords = explode(' ', $keyword);
$keywordQuery = new Zend_Search_Lucene_Search_Query_Multiterm();
foreach ($keywords as $term) {
$keywordQuery->addTerm(new Zend_Search_Lucene_Index_Term($term, 'content'));
$keywordQuery->addTerm(new Zend_Search_Lucene_Index_Term($term, 'search_display_name'));
}
// topcat query
if (!empty($topcat)) {
$term = new Zend_Search_Lucene_Index_Term($topcat, 'topcats');
$topcatQuery = new Zend_Search_Lucene_Search_Query_Term($term);
}
// cat query
if (!empty($cat)) {
$term = new Zend_Search_Lucene_Index_Term($cat, 'cats');
$catQuery = new Zend_Search_Lucene_Search_Query_Term($term);
}
// only authorized items query
if ($auth) {
$user = JFactory::getUser();
$gid = (int)$user->get('aid');
$gmid = explode(',', $user->gmid);
// flexicontent cat auth
$gcQuery = new Zend_Search_Lucene_Search_Query_MultiTerm();
foreach ($gmid as $g) {
$gcQuery->addTerm(new Zend_Search_Lucene_Index_Term($g, 'gc_aro'));
}
// stock joomla cat auth
$lowCAccessTerm = new Zend_Search_Lucene_Index_Term(0, 'c_access');
$highCAccessTerm = new Zend_Search_Lucene_Index_Term($gid, 'c_access');
$cAccessQuery = new Zend_Search_Lucene_Search_Query_Range($lowCAccessTerm, $highCAccessTerm, true);
// ORed flexicontent cat auth & stock joomla cat auth
$catAuthQuery = new Zend_Search_Lucene_Search_Query_Boolean();
$catAuthQuery->addSubquery($gcQuery);
$catAuthQuery->addSubquery($cAccessQuery);
// flexicontent itm auth
$giQuery = new Zend_Search_Lucene_Search_Query_MultiTerm();
foreach ($gmid as $g) {
$giQuery->addTerm(new Zend_Search_Lucene_Index_Term($g, 'gi_aro'));
}
// stock joomla itm auth
$lowIAccessTerm = new Zend_Search_Lucene_Index_Term(0, 'i_access');
$highIAccessTerm = new Zend_Search_Lucene_Index_Term($gid, 'i_access');
$iAccessQuery = new Zend_Search_Lucene_Search_Query_Range($lowIAccessTerm, $highIAccessTerm, true);
// ORed flexicontent itm auth & stock joomla itm auth
$itmAuthQuery = new Zend_Search_Lucene_Search_Query_Boolean();
$itmAuthQuery->addSubquery($giQuery);
$itmAuthQuery->addSubquery($iAccessQuery);
// ANDed itmAuthQuery & catAuthQuery
$authQuery = new Zend_Search_Lucene_Search_Query_Boolean();
$authQuery->addSubquery($catAuthQuery, true);
$authQuery->addSubquery($itmAuthQuery, true);
}
// composite query
$query = new Zend_Search_Lucene_Search_Query_Boolean();
$query->addSubquery($keywordQuery, true);
// if cat query is set we don't need topcat to restrict result set
if ($catQuery) {
$query->addSubquery($catQuery, true);
} elseif ($topcatQuery) {
$query->addSubquery($topcatQuery, true);
}
if ($authQuery) { $query->addSubquery($authQuery, true); }
// search
$execTime = new JProfiler();
$this->hits = $index->find($query);
echo $execTime->mark('executed');