如何提高 Zend_Search_Lucene 查询的性能？

Question

如何改进查询，如下所示？

我的索引已完全优化，除了 item_id 是关键字字段之外，所有字段均未存储。

问题出在“if ($auth) {”部分。如果删除此部分，搜索时间始终低于 1 秒，但添加此部分后，搜索时间为 5 秒或更长。显然这是一个更复杂的查询，但没有它我就活不下去。我需要该部分中的逻辑来仅获取用户有权查看的搜索结果。我知道速度减慢在于搜索工作本身，因为如果我删除“if ($authQuery) { $query->addSubquery($authQuery, true); }”行，搜索速度会相当快。

我试图在“if ($auth) {”部分中基本上实现以下逻辑：

lucene 字段 gi_aro、gc_aro、i_access 和 c_access 全部只包含一个整数，每个

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');

Answer 1

只检查不在索引内的结果怎么样？将某种键保存到索引中（数据库主键、guid，几乎任何东西）。然后获取结果并删除那些不允许用户看到的结果。

$allowedArray = $acl->getAllowedIds();
// check happens when echoing the content to prevent double cycling (filtering and echoing in view)
foreach ($result as $item) {
    if (in_array($item->keyVaue, $allowedArray)) {
        //echo
    }
} 

编辑：请注意，这取决于大多数查询的结果。如果常规查询中有 <50 个结果，那么用 PHP 执行就可以了。但如果普通查询返回大约 10,000 个结果，这可能不是一个好主意;)