/**
* Возвращает обязательное поле коллекции.
* @param $fieldName
* @throws NonexistentEntityException если поле не существует
* @return IField
*/
protected function getRequiredField($fieldName)
{
if (!$this->metadata->getFieldExists($fieldName)) {
throw new NonexistentEntityException($this->translate('Collection "{collection}" does not contain required field "{name}".', ['collection' => $this->name, 'name' => $fieldName]));
}
return $this->metadata->getField($fieldName);
}
/**
* {@inheritdoc}
*/
public function getField($fieldName)
{
if (!$this->getFieldExists($fieldName) || !($field = $this->fields[$fieldName])) {
throw new NonexistentEntityException($this->translate('Field "{name}" does not exist in "{collection}.{type}".', ['name' => $fieldName, 'collection' => $this->metadata->getCollectionName(), 'type' => $this->name]));
}
return $field;
}
/**
* Возвращает имена типов, которые должны присутствовать в выборке
* @throws InvalidArgumentException если заданы невозможные условия выборки
* @return array
*/
protected function getSelectionTypes()
{
if (!count($this->usedFields)) {
return array_keys($this->types);
}
$fields = array_keys($this->usedFields);
if (!count($this->types)) {
$types = $this->metadata->getTypesByFields($fields);
if (!count($types)) {
throw new InvalidArgumentException($this->translate('The selection is not possible. Conditions do not match metadata types.'));
}
if (!count(array_diff($this->metadata->getTypesList(), $types))) {
$types = [];
}
return $types;
}
$types = array_keys($this->types);
$typesCount = count($types);
if (count(array_intersect($this->metadata->getTypesByFields($fields), $types)) != $typesCount) {
throw new InvalidArgumentException($this->translate('The selection is not possible. Conditions do not match metadata types.'));
}
return $types;
}