/**
* {@inheritdoc}
*
* Override RestfulEntityBase::createEntity() to test if meter already exists,
* to allow update existing nodes in stead of creating a copy.
*/
public function createEntity()
{
// Check if an electricity entity with the same parameters exists.
$query = new EntityFieldQuery();
$result = $query->entityCondition('entity_type', 'electricity_raw')->propertyCondition('meter_nid', $this->request['meter'])->propertyCondition('timestamp', $this->request['timestamp'])->propertyCondition('meter_type', $this->request['meter_type'])->propertyCondition('rate_type', $this->request['rate_type'])->propertyCondition('frequency', $this->request['frequency'])->range(0, 1)->execute();
if (!empty($result['electricity_raw'])) {
// Node exists, update it.
$id = key($result['electricity_raw']);
return parent::updateEntity($id);
}
// New node.
return parent::createEntity();
}
