/**
* Remove a edge from a graph, identified by the graph name and edge id<br><br>
*
* @throws Exception
*
* @param mixed $graph - graph name as a string or instance of Graph
* @param mixed $edgeId - edge id as string or number
* @param mixed $revision - optional revision of the edge to be deleted
* @param mixed $options optional, array of options (see below) or the boolean value for $policy (for compatibility prior to version 1.1 of this method)
* <p>
* <li><b>policy</b> - update policy to be used in case of conflict ('error', 'last' or NULL [use default])</li>
* <li><b>waitForSync</b> - can be used to force synchronisation of the document removal operation to disk even in case that the waitForSync flag had been disabled for the entire collection</li>
* </p>
* @param string $collection - if one uses a graph with more than one vertex collection one must provide the collection
*
* @return bool - always true, will throw if there is an error
* @since 1.2
*/
public function removeEdge($graph, $edgeId, $revision = null, $options = array(), $collection = null)
{
if ($graph instanceof Graph) {
$graph = $graph->getKey();
}
$parts = explode("/", $edgeId);
if (count($parts) === 2) {
$edgeId = $parts[1];
$collection = $parts[0];
}
if (count($this->getEdgeCollections($graph)) !== 1 && $collection === null) {
throw new ClientException('A collection must be provided.');
} else {
if (count($this->getEdgeCollections($graph)) === 1 && $collection === null) {
$collection = $this->getEdgeCollections($graph);
$collection = $collection[0];
}
}
// This preserves compatibility for the old policy parameter.
$params = array();
$params = $this->validateAndIncludeOldSingleParameterInParams($options, $params, ConnectionOptions::OPTION_DELETE_POLICY);
$params = $this->includeOptionsInParams($options, $params, array('waitForSync' => $this->getConnectionOption(ConnectionOptions::OPTION_WAIT_SYNC), 'keepNull' => true));
if (!is_null($revision)) {
$params[ConnectionOptions::OPTION_REVISION] = $revision;
}
$url = UrlHelper::buildUrl(Urls::URL_GRAPH, array($graph, Urls::URLPART_EDGE, $collection, $edgeId));
$url = UrlHelper::appendParamsUrl($url, $params);
$this->getConnection()->delete($url);
return true;
}
/**
* Deletes an endpoint
*
* This will delete an existing endpoint.
*
* @param Connection $connection - the connection to be used
* @param string $endpoint - the endpoint specification, e.g. tcp://127.0.0.1:8530
*
* @link http://www.arangodb.com/manuals/1.4/HttpEndpoint.html
* @return array $responseArray - The response array.
*/
public static function delete(Connection $connection, $endpoint)
{
$url = UrlHelper::buildUrl(Urls::URL_ENDPOINT, array($endpoint));
$response = $connection->delete($url);
$responseArray = $response->getJson();
return $responseArray;
}
/**
* Retrieves information about the current database
*
* This will get information about the currently used database from the server
*
* @param Connection $connection - the connection to be used
*
* @link http://www.arangodb.com/manuals/1.4/HttpDatabase.html
*
* @return array $responseArray - The response array.
*/
public static function getInfo(Connection $connection)
{
$url = UrlHelper::buildUrl(Urls::URL_DATABASE, array('current'));
$response = $connection->get($url);
$responseArray = $response->getJson();
return $responseArray;
}
/**
* Get registered user functions
*
* The method can optionally be passed a $namespace parameter to narrow the results down to a specific namespace.
*
* @param null $namespace
*
* @throws Exception throw exception if the request failed
*
* @return mixed true if successful without a return value or the return value if one was set in the action
*/
public function getRegisteredUserFunctions($namespace = null)
{
$url = UrlHelper::buildUrl(Urls::URL_AQL_USER_FUNCTION, array());
if (!is_null($namespace)) {
$url = UrlHelper::appendParamsUrl($url, array('namespace' => $namespace));
}
$response = $this->_connection->get($url);
$responseArray = $response->getJson();
return $responseArray;
}
/**
* Get list of all available collections per default with the collection names as index.
* Returns empty array if none are available.
*
* @param array $options - optional - an array of options.
* <p>Options are :<br>
* <li>'excludeSystem' - With a value of true, all system collections will be excluded from the response.</li>
* <li>'keys' - With a value of "collections", the index of the resulting array is numerical,
* With a value of "names", the index of the resulting array are the collection names.</li>
* </p>
*
* @return array
*/
public function getAllCollections($options = array())
{
$options = array_merge(array("excludeSystem" => false, 'keys' => "names"), $options);
$params = array();
if ($options["excludeSystem"] === true) {
$params[self::OPTION_EXCLUDE_SYSTEM] = true;
}
$url = UrlHelper::appendParamsUrl(Urls::URL_COLLECTION, $params);
$response = $this->getConnection()->get(UrlHelper::buildUrl($url, array()));
$response = $response->getJson();
if (isset($options["keys"]) && isset($response[$options["keys"]])) {
return $response[$options["keys"]];
}
return $response;
}
/**
* Remove a user, identified by the username
*
* @throws Exception
*
* @param mixed $username - username as a string, of the user that is to be deleted
*
* @return bool - always true, will throw if there is an error
*/
public function removeUser($username)
{
// This preserves compatibility for the old policy parameter.
$params = array();
$url = UrlHelper::buildUrl(Urls::URL_USER, array($username));
$url = UrlHelper::appendParamsUrl($url, $params);
$this->getConnection()->delete($url);
return true;
}
/**
* Remove a document from a collection (internal method)
*
* @throws Exception
*
* @param string $url - the server-side URL being called
* @param string $collectionId - collection id as string or number
* @param mixed $documentId - document id as string or number
* @param mixed $revision - optional revision of the document to be deleted
* @param mixed $options - optional, array of options (see below) or the boolean value for $policy (for compatibility prior to version 1.1 of this method)
* <p>Options are :
* <li>'policy' - update policy to be used in case of conflict ('error', 'last' or NULL [use default])</li>
* <li>'waitForSync' - can be used to force synchronisation of the document removal operation to disk even in case that the waitForSync flag had been disabled for the entire collection</li>
* </p>
*
* @return bool - always true, will throw if there is an error
*/
protected function erase($url, $collectionId, $documentId, $revision = null, $options = array())
{
// This preserves compatibility for the old policy parameter.
$params = array();
$params = $this->validateAndIncludeOldSingleParameterInParams($options, $params, ConnectionOptions::OPTION_DELETE_POLICY);
$params = $this->includeOptionsInParams($options, $params, array('waitForSync' => ConnectionOptions::OPTION_WAIT_SYNC));
if (!is_null($revision)) {
$params[ConnectionOptions::OPTION_REVISION] = $revision;
}
$url = UrlHelper::buildUrl($url, array($collectionId, $documentId));
$url = UrlHelper::appendParamsUrl($url, $params);
$this->getConnection()->delete($url);
return true;
}
/**
* Kills a specific query
*
* This will send an HTTP DELETE command to the server to terminate the specified query
*
* @param string $id - query id
*
* @throws Exception
*
* @return bool
*/
public function kill($id)
{
$url = UrlHelper::buildUrl(Urls::URL_QUERY, array($id));
$this->_connection->delete($url);
return true;
}
