/**
* View the results of a search operation.
* @param $args array
* @param $request PKPRequest
* @return string
*/
function results($args, $request)
{
$templateMgr = TemplateManager::getManager($request);
$press = $request->getPress();
$this->setupTemplate($request);
$query = $request->getUserVar('query');
$templateMgr->assign('searchQuery', $query);
// Fetch the monographs to display
import('classes.search.MonographSearch');
$monographSearch = new MonographSearch();
$error = null;
$resultsIterator = $monographSearch->retrieveResults($request, $press, array(null => $query), $error);
$publishedMonographs = array();
while ($result = $resultsIterator->next()) {
$publishedMonograph = $result['publishedMonograph'];
if ($publishedMonograph) {
$publishedMonographs[$publishedMonograph->getId()] = $publishedMonograph;
}
}
$templateMgr->assign('publishedMonographs', $publishedMonographs);
// Display
$templateMgr->display('catalog/results.tpl');
}
/**
* Return an array of search results matching the supplied
* keyword IDs in decreasing order of match quality.
* Keywords are supplied in an array of the following format:
* $keywords[MONOGRAPH_SEARCH_AUTHOR] = array('John', 'Doe');
* $keywords[MONOGRAPH_SEARCH_...] = array(...);
* $keywords[null] = array('Matches', 'All', 'Fields');
* @param $press object The press to search
* @param $keywords array List of keywords
* @param $publishedFrom object Search-from date
* @param $publishedTo object Search-to date
* @param $rangeInfo Information on the range of results to return
*/
function &retrieveResults(&$press, &$keywords, $publishedFrom = null, $publishedTo = null, $rangeInfo = null)
{
// Fetch all the results from all the keywords into one array
// (mergedResults), where mergedResults[monograph_id]
// = sum of all the occurences for all keywords associated with
// that monograph ID.
// resultCount contains the sum of result counts for all keywords.
$mergedResults =& MonographSearch::_getMergedArray($press, $keywords, $publishedFrom, $publishedTo, $resultCount);
// Convert mergedResults into an array (frequencyIndicator =>
// $monographId).
// The frequencyIndicator is a synthetically-generated number,
// where higher is better, indicating the quality of the match.
// It is generated here in such a manner that matches with
// identical frequency do not collide.
$results =& MonographSearch::_getSparseArray($mergedResults, $resultCount);
$totalResults = count($results);
// Use only the results for the specified page, if specified.
if ($rangeInfo && $rangeInfo->isValid()) {
$results = array_slice($results, $rangeInfo->getCount() * ($rangeInfo->getPage() - 1), $rangeInfo->getCount());
$page = $rangeInfo->getPage();
$itemsPerPage = $rangeInfo->getCount();
} else {
$page = 1;
$itemsPerPage = max($totalResults, 1);
}
// Take the range of results and retrieve the Monograph, Press,
// and associated objects.
$results =& MonographSearch::formatResults($results);
// Return the appropriate iterator.
import('lib.pkp.classes.core.VirtualArrayIterator');
$returner = new VirtualArrayIterator($results, $totalResults, $page, $itemsPerPage);
return $returner;
}
