protected function parseCollection(Sql $sql, Collection $collection, $alias, &$aliases, &$conditions)
{
$s = $this->getStyle();
$entity = $collection->getName();
$parent = $collection->getParentName();
$next = $collection->getNextName();
$parentAlias = $parent ? $aliases[$parent] : null;
$aliases[$entity] = $alias;
$conditions = $this->parseConditions($conditions, $collection, $alias) ?: $conditions;
//No parent collection means it's the first table in the query
if (is_null($parentAlias)) {
$sql->from($entity);
$this->parseMixins($sql, $collection, $entity);
return;
} else {
if ($collection->isRequired()) {
$sql->innerJoin($entity);
} else {
$sql->leftJoin($entity);
}
$this->parseMixins($sql, $collection, $entity);
if ($alias !== $entity) {
$sql->as($alias);
}
$aliasedPk = $alias . '.' . $s->identifier($entity);
$aliasedParentPk = $parentAlias . '.' . $s->identifier($parent);
if ($this->hasComposition($entity, $next, $parent)) {
$onName = $alias . '.' . $s->remoteIdentifier($parent);
$onAlias = $aliasedParentPk;
} else {
$onName = $parentAlias . '.' . $s->remoteIdentifier($entity);
$onAlias = $aliasedPk;
}
return $sql->on(array($onName => $onAlias));
}
}
