/**
* Returns an article authors 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 $articleAuthorsList
* An array of Author 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) ? 'order' : $p_order;
$paramsArray['start'] = $p_start;
$paramsArray['limit'] = $p_limit;
$cacheListObj = new CampCacheList($paramsArray, __METHOD__);
$articleAuthorsList = $cacheListObj->fetchFromCache();
if ($articleAuthorsList !== false && is_array($articleAuthorsList)) {
return $articleAuthorsList;
}
}
$hasArticleNr = false;
$selectClauseObj = new SQLSelectClause();
$countClauseObj = new SQLSelectClause();
// sets the where conditions
foreach ($p_parameters as $param) {
if ($param->getLeftOperand() == 'type') {
$whereCondition = 'fk_type_id ' . $param->getOperator()->getSymbol() . ' (SELECT id FROM ' . AuthorType::TABLE . ' WHERE type="' . str_replace("'", "", $param->getRightOperand()) . '")';
$selectClauseObj->addWhere($whereCondition);
$countClauseObj->addWhere($whereCondition);
}
if ($param->getLeftOperand() == 'id') {
$whereCondition = 'fk_author_id ' . $param->getOperator()->getSymbol() . ' ' . $param->getRightOperand();
$selectClauseObj->addWhere($whereCondition);
$countClauseObj->addWhere($whereCondition);
}
$comparisonOperation = self::ProcessListParameters($param);
if (sizeof($comparisonOperation) < 1) {
break;
}
switch (key($comparisonOperation)) {
case 'fk_article_number':
$whereCondition = 'fk_article_number = ' . $comparisonOperation['fk_article_number'];
$hasArticleNr = true;
break;
case 'fk_language_id':
$whereCondition = '(fk_language_id IS NULL OR ' . 'fk_language_id = ' . $comparisonOperation['fk_language_id'] . ')';
break;
}
$selectClauseObj->addWhere($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_authors");
}
// sets the base table ArticleAuthors and the column to be fetched
$tmpArticleAuthor = new ArticleAuthor();
$selectClauseObj->setTable($tmpArticleAuthor->getDbTableName());
$selectClauseObj->addJoin('JOIN ' . Author::TABLE . ' ON fk_author_id = id');
$selectClauseObj->addColumn('fk_author_id');
$selectClauseObj->addColumn('fk_type_id');
$countClauseObj->setTable($tmpArticleAuthor->getDbTableName());
$countClauseObj->addColumn('COUNT(*)');
unset($tmpArticleAuthor);
if (!is_array($p_order)) {
$p_order = array();
}
$order = self::ProcessListOrder($p_order);
// sets the order condition if any
foreach ($order as $orderDesc) {
$orderField = $orderDesc['field'];
$orderDirection = $orderDesc['dir'];
$selectClauseObj->addOrderBy($orderField . ' ' . $orderDirection);
}
// sets the limit
$selectClauseObj->setLimit($p_start, $p_limit);
// builds the query and executes it
$selectQuery = $selectClauseObj->buildQuery();
$authors = $g_ado_db->GetAll($selectQuery);
if (is_array($authors)) {
$countQuery = $countClauseObj->buildQuery();
$p_count = $g_ado_db->GetOne($countQuery);
// builds the array of attachment objects
$authorsList = array();
foreach ($authors as $author) {
$authorObj = new Author($author['fk_author_id'], $author['fk_type_id']);
if ($authorObj->exists()) {
$authorsList[] = $authorObj;
}
}
} else {
$authorsList = array();
$p_count = 0;
}
if (!$p_skipCache && CampCache::IsEnabled()) {
$cacheListObj->storeInCache($authorsList);
}
return $authorsList;
}
