/**
* Returns an article topics list based on the given parameters.
*
* @param array $p_parameters
* An array of ComparisonOperation objects
* @param string $p_order
* An array of columns and directions to order by
* @param integer $p_start
* The record number to start the list
* @param integer $p_limit
* The offset. How many records from $p_start will be retrieved.
* @param integer $p_count
* The total count of the elements; this count is computed without
* applying the start ($p_start) and limit parameters ($p_limit)
*
* @return array $articleTopicsList
* An array of Topic objects
*/
public static function GetList(array $p_parameters, $p_order = null, $p_start = 0, $p_limit = 0, &$p_count, $p_skipCache = false)
{
global $g_ado_db;
if (!$p_skipCache && CampCache::IsEnabled()) {
$paramsArray['parameters'] = serialize($p_parameters);
$paramsArray['order'] = is_null($p_order) ? 'null' : $p_order;
$paramsArray['start'] = $p_start;
$paramsArray['limit'] = $p_limit;
$cacheListObj = new CampCacheList($paramsArray, __METHOD__);
$articleTopicsList = $cacheListObj->fetchFromCache();
if ($articleTopicsList !== false && is_array($articleTopicsList)) {
return $articleTopicsList;
}
}
$selectClauseObj = new SQLSelectClause();
$countClauseObj = new SQLSelectClause();
$rootTopicIds = array();
// processes the parameters
$hasArticleNr = false;
foreach ($p_parameters as $parameter) {
$comparisonOperation = self::ProcessListParameters($parameter);
if (sizeof($comparisonOperation) < 1) {
break;
}
if (strpos($comparisonOperation['left'], 'NrArticle') !== false) {
$hasArticleNr = true;
}
if (strpos($comparisonOperation['left'], 'RootTopic') !== false) {
$rootTopicIds[] = (int) $comparisonOperation['right'];
continue;
}
$whereCondition = $g_ado_db->escapeOperation($comparisonOperation);
$selectClauseObj->addWhere($whereCondition);
$countClauseObj->addWhere($whereCondition);
}
// validates whether article number was given
if ($hasArticleNr === false) {
CampTemplate::singleton()->trigger_error("missed parameter Article Number in statement list_article_topics");
return array();
}
if (count($rootTopicIds) > 0) {
$subtopicsQuery = Topic::BuildSubtopicsQueryWithoutDepth($rootTopicIds);
$whereCondition = 'TopicId IN (' . $subtopicsQuery->buildQuery() . ')';
$selectClauseObj->addWhere($whereCondition);
$countClauseObj->addWhere($whereCondition);
}
// sets the main table and columns to be fetched
$tmpArticleTopic = new ArticleTopic();
$selectClauseObj->setTable($tmpArticleTopic->getDbTableName());
$selectClauseObj->addColumn('TopicId');
$countClauseObj->setTable($tmpArticleTopic->getDbTableName());
$countClauseObj->addColumn('COUNT(*)');
unset($tmpArticleTopic);
if (!is_array($p_order)) {
$p_order = array();
}
// sets the order condition if any
foreach ($p_order as $orderColumn => $orderDirection) {
$selectClauseObj->addOrderBy($orderColumn . ' ' . $orderDirection);
}
// sets the limit
$selectClauseObj->setLimit($p_start, $p_limit);
// builds the query and executes it
$selectQuery = $selectClauseObj->buildQuery();
$topics = $g_ado_db->GetAll($selectQuery);
if (is_array($topics)) {
$countQuery = $countClauseObj->buildQuery();
$p_count = $g_ado_db->GetOne($countQuery);
// builds the array of topic objects
$articleTopicsList = array();
foreach ($topics as $topic) {
$articleTopicsList[] = $topic['TopicId'];
}
} else {
$articleTopicsList = array();
$p_count = 0;
}
if (!$p_skipCache && CampCache::IsEnabled()) {
$cacheListObj->storeInCache($articleTopicsList);
}
return $articleTopicsList;
}
