mirror of https://gitee.com/bigwinds/arangodb
1958 lines
57 KiB
JavaScript
1958 lines
57 KiB
JavaScript
/*jslint indent: 2, nomen: true, maxlen: 100, sloppy: true, vars: true, white: true, plusplus: true */
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/*global require, exports, module */
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////////////////////////////////////////////////////////////////////////////////
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/// @brief graph api
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2012 triagens GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is triAGENS GmbH, Cologne, Germany
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///
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/// @author Achim Brandt
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/// @author Jan Steemann
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/// @author Copyright 2012, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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var actions = require("org/arangodb/actions");
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var graph = require("org/arangodb/graph");
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var internal = require("internal");
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var ArangoError = require("org/arangodb").ArangoError;
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var QUERY = require("internal").AQL_QUERY;
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// -----------------------------------------------------------------------------
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// --SECTION-- global variables
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup ArangoAPI
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief url prefix
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////////////////////////////////////////////////////////////////////////////////
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var GRAPH_URL_PREFIX = "_api/graph";
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////////////////////////////////////////////////////////////////////////////////
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/// @brief context
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////////////////////////////////////////////////////////////////////////////////
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var GRAPH_CONTEXT = "api";
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// -----------------------------------------------------------------------------
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// --SECTION-- private functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup ArangoAPI
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief get graph by request parameter (throws exception)
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////////////////////////////////////////////////////////////////////////////////
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function graph_by_request (req) {
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var key = req.suffix[0];
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var g = new graph.Graph(key);
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if (g._properties === null) {
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throw "no graph found for: " + key;
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}
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return g;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief get vertex by request (throws exception)
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////////////////////////////////////////////////////////////////////////////////
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function vertex_by_request (req, g) {
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if (req.suffix.length < 3) {
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throw "no vertex found";
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}
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var key = req.suffix[2];
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if (req.suffix.length > 3) {
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key += "/" + req.suffix[3];
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}
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var vertex = g.getVertex(key);
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if (vertex === null || vertex._properties === undefined) {
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throw "no vertex found for: " + key;
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}
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return vertex;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief get edge by request (throws exception)
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////////////////////////////////////////////////////////////////////////////////
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function edge_by_request (req, g) {
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if (req.suffix.length < 3) {
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throw "no edge found";
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}
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var key = req.suffix[2];
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if (req.suffix.length > 3) {
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key += "/" + req.suffix[3];
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}
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var edge = g.getEdge(key);
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if (edge === null || edge._properties === undefined) {
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throw "no edge found for: " + key;
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}
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return edge;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief returns true if a "if-match" or "if-none-match" errer happens
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////////////////////////////////////////////////////////////////////////////////
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function matchError (req, res, doc, errorCode) {
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if (req.headers["if-none-match"] != undefined) {
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if (doc._rev === req.headers["if-none-match"]) {
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// error
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res.responseCode = actions.HTTP_NOT_MODIFIED;
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res.contentType = "application/json; charset=utf-8";
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res.body = '';
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res.headers = {};
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return true;
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}
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}
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if (req.headers["if-match"] != undefined) {
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if (doc._rev !== req.headers["if-match"]) {
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// error
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actions.resultError(req, res, actions.HTTP_PRECONDITION_FAILED, errorCode, "wrong revision", {});
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return true;
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}
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}
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var rev = req.parameters['rev'];
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if (rev != undefined) {
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if (doc._rev !== rev) {
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// error
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actions.resultError(req, res, actions.HTTP_PRECONDITION_FAILED, errorCode, "wrong revision", {});
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return true;
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}
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}
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return false;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// -----------------------------------------------------------------------------
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// --SECTION-- graph functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup ArangoAPI
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief create a graph
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///
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/// @RESTHEADER{POST /_api/graph,create graph}
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///
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/// @RESTQUERYPARAMETERS
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///
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/// @RESTQUERYPARAM{waitForSync,boolean,optional}
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/// Wait until document has been sync to disk.
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///
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/// @RESTDESCRIPTION
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/// Creates a new graph.
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///
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/// The call expects a JSON hash array as body with the following attributes:
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///
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/// - @LIT{_key}: The name of the new graph.
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/// - @LIT{vertices}: The name of the vertices collection.
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/// - @LIT{edges}: The name of the egde collection.
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///
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/// Returns an object with an attribute @LIT{graph} containing a
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/// list of all graph properties.
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///
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/// @RESTRETURNCODES
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///
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/// @RESTRETURNCODE{201}
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/// is returned if the graph was created sucessfully and `waitForSync` was
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/// `true`.
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///
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/// @RESTRETURNCODE{202}
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/// is returned if the graph was created sucessfully and `waitForSync` was
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/// `false`.
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///
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/// @RESTRETURNCODE{400}
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/// is returned if it failed.
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/// The response body contains an error document in this case.
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///
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/// @EXAMPLES
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///
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/// @verbinclude api-graph-create-graph
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////////////////////////////////////////////////////////////////////////////////
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function post_graph_graph (req, res) {
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try {
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var json = actions.getJsonBody(req, res, actions.ERROR_GRAPH_COULD_NOT_CREATE_GRAPH);
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if (json === undefined) {
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return;
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}
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var name = json._key;
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var vertices = json.vertices;
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var edges = json.edges;
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var waitForSync = false;
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if (req.parameters['waitForSync']) {
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waitForSync = true;
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}
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var g = new graph.Graph(name, vertices, edges, waitForSync);
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if (g._properties === null) {
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throw "no properties of graph found";
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}
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var headers = {
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"Etag" : g._properties._rev
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}
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waitForSync = waitForSync || g._gdb.properties().waitForSync;
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var returnCode = waitForSync ? actions.HTTP_CREATED : actions.HTTP_ACCEPTED;
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actions.resultOk(req, res, returnCode, { "graph" : g._properties }, headers );
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}
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catch (err) {
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actions.resultBad(req, res, actions.ERROR_GRAPH_COULD_NOT_CREATE_GRAPH, err);
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief get graph properties
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///
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/// @RESTHEADER{GET /_api/graph,get graph properties}
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///
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/// @RESTQUERYPARAMETERS
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///
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/// @RESTQUERYPARAM{rev,string,optional}
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/// Revision of a graph
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///
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/// @RESTDESCRIPTION
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///
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/// Returns an object with an attribute @LIT{graph} containing a
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/// list of all graph properties.
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///
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/// If the "If-None-Match" header is given, then it must contain exactly one
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/// etag. The document is returned, if it has a different revision than the
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/// given etag. Otherwise a @LIT{HTTP 304} is returned.
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///
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/// If the "If-Match" header is given, then it must contain exactly one
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/// etag. The document is returned, if it has the same revision ad the
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/// given etag. Otherwise a @LIT{HTTP 412} is returned. As an alternative
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/// you can supply the etag in an attribute @LIT{rev} in the URL.
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///
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/// @RESTRETURNCODES
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///
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/// @RESTRETURNCODE{200}
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/// is returned if the graph was found
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///
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/// @RESTRETURNCODE{404}
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/// is returned if the graph was not found.
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/// The response body contains an error document in this case.
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///
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/// @RESTRETURNCODE{304}
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/// "If-None-Match" header is given and the current graph has not a different
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/// version
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///
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/// @RESTRETURNCODE{412}
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/// "If-Match" header or @LIT{rev} is given and the current graph has
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/// a different version
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///
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/// @EXAMPLES
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///
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/// get graph by name
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///
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/// @verbinclude api-graph-get-graph
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///
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////////////////////////////////////////////////////////////////////////////////
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function get_graph_graph (req, res) {
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try {
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var g = graph_by_request(req);
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if (matchError(req, res, g._properties, actions.ERROR_GRAPH_INVALID_GRAPH)) {
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return;
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}
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var headers = {
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"Etag" : g._properties._rev
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}
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actions.resultOk(req, res, actions.HTTP_OK, { "graph" : g._properties}, headers );
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}
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catch (err) {
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actions.resultNotFound(req, res, actions.ERROR_GRAPH_INVALID_GRAPH, err);
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return;
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief deletes a graph
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///
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/// @RESTHEADER{DELETE /_api/graph,delete graph}
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///
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/// @RESTQUERYPARAMETERS
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///
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/// @RESTQUERYPARAM{waitForSync,boolean,optional}
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/// Wait until document has been sync to disk.
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///
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/// @RESTQUERYPARAM{rev,string,optional}
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/// Revision of a graph
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///
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/// @RESTDESCRIPTION
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/// Deletes graph, edges and vertices
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///
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/// If the "If-Match" header is given, then it must contain exactly one
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/// etag. The document is deleted, if it has the same revision ad the
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/// given etag. Otherwise a @LIT{HTTP 412} is returned. As an alternative
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/// you can supply the etag in an attribute @LIT{rev} in the URL.
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///
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/// @RESTRETURNCODES
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///
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/// @RESTRETURNCODE{204}
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/// is returned if the graph was deleted
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///
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/// @RESTRETURNCODE{404}
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/// is returned if the graph was not found.
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/// The response body contains an error document in this case.
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///
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/// @RESTRETURNCODE{412}
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/// "If-Match" header or @LIT{rev} is given and the current graph has
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/// a different version
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///
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/// @EXAMPLES
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///
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/// @verbinclude api-graph-delete-graph
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////////////////////////////////////////////////////////////////////////////////
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function delete_graph_graph (req, res) {
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try {
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var g = graph_by_request(req);
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}
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catch (err) {
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actions.resultNotFound(req, res, actions.ERROR_GRAPH_INVALID_GRAPH, err);
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}
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if (matchError(req, res, g._properties, actions.ERROR_GRAPH_INVALID_GRAPH)) {
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return;
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}
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var waitForSync = g._gdb.properties().waitForSync;
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if (req.parameters['waitForSync']) {
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waitForSync = true;
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}
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g.drop(waitForSync);
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waitForSync = waitForSync || g._gdb.properties().waitForSync;
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var returnCode = waitForSync ? actions.HTTP_OK : actions.HTTP_ACCEPTED;
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actions.resultOk(req, res, returnCode, { "deleted" : true });
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// -----------------------------------------------------------------------------
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// --SECTION-- vertex functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup ArangoAPI
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief creates a graph vertex
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///
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/// @RESTHEADER{POST /_api/graph/@FA{graph-name}/vertex,create vertex}
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///
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/// @RESTQUERYPARAMETERS
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///
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/// @RESTQUERYPARAM{waitForSync,boolean,optional}
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/// Wait until document has been sync to disk.
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///
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/// @RESTDESCRIPTION
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/// Creates a vertex in a graph.
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///
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/// The call expects a JSON hash array as body with the vertex properties:
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///
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/// - @LIT{_key}: The name of the vertex (optional).
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/// - further optional attributes.
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///
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/// Returns an object with an attribute @LIT{vertex} containing a
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/// list of all vertex properties.
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///
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/// @RESTRETURNCODES
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///
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/// @RESTRETURNCODE{201}
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/// is returned if the graph was created sucessfully and `waitForSync` was
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/// `true`.
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///
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/// @RESTRETURNCODE{202}
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/// is returned if the graph was created sucessfully and `waitForSync` was
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/// `false`.
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///
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/// @EXAMPLES
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///
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/// @verbinclude api-graph-create-vertex
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////////////////////////////////////////////////////////////////////////////////
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function post_graph_vertex (req, res, g) {
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try {
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var json = actions.getJsonBody(req, res);
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var id;
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if (json) {
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id = json._key;
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}
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var waitForSync = g._vertices.properties().waitForSync;
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if (req.parameters['waitForSync']) {
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waitForSync = true;
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}
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var v = g.addVertex(id, json, waitForSync);
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if (v === null || v._properties === undefined) {
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throw "could not create vertex";
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}
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var headers = {
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"Etag" : v._properties._rev
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}
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var returnCode = waitForSync ? actions.HTTP_CREATED : actions.HTTP_ACCEPTED;
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actions.resultOk(req, res, returnCode, { "vertex" : v._properties }, headers );
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}
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catch (err) {
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actions.resultBad(req, res, actions.ERROR_GRAPH_COULD_NOT_CREATE_VERTEX, err);
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief gets the vertex properties
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///
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/// @RESTHEADER{GET /_api/graph/@FA{graph-name}/vertex,get vertex}
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///
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/// @RESTQUERYPARAMETERS
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///
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/// @RESTQUERYPARAM{rev,string,optional}
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/// Revision of a vertex
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///
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/// @RESTDESCRIPTION
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/// Returns an object with an attribute @LIT{vertex} containing a
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/// list of all vertex properties.
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///
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/// If the "If-None-Match" header is given, then it must contain exactly one
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/// etag. The document is returned, if it has a different revision than the
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/// given etag. Otherwise a @LIT{HTTP 304} is returned.
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///
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/// If the "If-Match" header is given, then it must contain exactly one
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/// etag. The document is returned, if it has the same revision ad the
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/// given etag. Otherwise a @LIT{HTTP 412} is returned. As an alternative
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/// you can supply the etag in an attribute @LIT{rev} in the URL.
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///
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/// @RESTRETURNCODES
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///
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/// @RESTRETURNCODE{200}
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/// is returned if the graph was found
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///
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/// @RESTRETURNCODE{304}
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/// "If-Match" header is given and the current graph has not a different
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/// version
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///
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/// @RESTRETURNCODE{404}
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/// is returned if the graph or vertex was not found.
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/// The response body contains an error document in this case.
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///
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/// @RESTRETURNCODE{412}
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/// "If-None-Match" header or @LIT{rev} is given and the current graph has
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/// a different version
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///
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/// @EXAMPLES
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///
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/// get vertex properties by name
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///
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/// @verbinclude api-graph-get-vertex
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///
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////////////////////////////////////////////////////////////////////////////////
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function get_graph_vertex (req, res, g) {
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try {
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var v = vertex_by_request(req, g);
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}
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catch (err) {
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actions.resultNotFound(req, res, actions.ERROR_GRAPH_INVALID_VERTEX, err);
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return;
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}
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if (matchError(req, res, v._properties, actions.ERROR_GRAPH_INVALID_VERTEX)) {
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return;
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}
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var headers = {
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"Etag" : v._properties._rev
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}
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actions.resultOk(req, res, actions.HTTP_OK, { "vertex" : v._properties}, headers);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief delete vertex
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///
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/// @RESTHEADER{DELETE /_api/graph/@FA{graph-name}/vertex,delete vertex}
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///
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/// @RESTQUERYPARAMETERS
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///
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/// @RESTQUERYPARAM{waitForSync,boolean,optional}
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/// Wait until document has been sync to disk.
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///
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/// @RESTQUERYPARAM{rev,string,optional}
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/// Revision of a vertex
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///
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/// @RESTDESCRIPTION
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/// Deletes vertex and all in and out edges of the vertex
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///
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/// If the "If-Match" header is given, then it must contain exactly one
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/// etag. The document is deleted, if it has the same revision ad the
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/// given etag. Otherwise a @LIT{HTTP 412} is returned. As an alternative
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/// you can supply the etag in an attribute @LIT{rev} in the URL.
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///
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/// @RESTRETURNCODES
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///
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/// @RESTRETURNCODE{200}
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/// is returned if the vertex was deleted
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///
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/// @RESTRETURNCODE{404}
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/// is returned if the graph or the vertex was not found.
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|
/// The response body contains an error document in this case.
|
|
///
|
|
/// @RESTRETURNCODE{412}
|
|
/// "If-Match" header or @LIT{rev} is given and the current vertex has
|
|
/// a different version
|
|
///
|
|
/// @EXAMPLES
|
|
///
|
|
/// @verbinclude api-graph-delete-vertex
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function delete_graph_vertex (req, res, g) {
|
|
try {
|
|
var v = vertex_by_request(req, g);
|
|
}
|
|
catch (err) {
|
|
actions.resultNotFound(req, res, actions.ERROR_GRAPH_INVALID_VERTEX, err);
|
|
return;
|
|
}
|
|
|
|
if (matchError(req, res, v._properties, actions.ERROR_GRAPH_INVALID_VERTEX)) {
|
|
return;
|
|
}
|
|
|
|
var waitForSync = g._vertices.properties().waitForSync;
|
|
if (req.parameters['waitForSync']) {
|
|
waitForSync = true;
|
|
}
|
|
|
|
g.removeVertex(v, waitForSync);
|
|
|
|
var returnCode = waitForSync ? actions.HTTP_OK : actions.HTTP_ACCEPTED;
|
|
|
|
actions.resultOk(req, res, returnCode, { "deleted" : true });
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief update (PUT or PATCH) a vertex
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function update_graph_vertex (req, res, g, isPatch) {
|
|
var v = null;
|
|
|
|
try {
|
|
v = vertex_by_request(req, g);
|
|
}
|
|
catch (err) {
|
|
actions.resultNotFound(req, res, actions.ERROR_GRAPH_COULD_NOT_CHANGE_VERTEX, err);
|
|
return;
|
|
}
|
|
|
|
if (matchError(req, res, v._properties, actions.ERROR_GRAPH_INVALID_VERTEX)) {
|
|
return;
|
|
}
|
|
|
|
try {
|
|
var json = actions.getJsonBody(req, res, actions.ERROR_GRAPH_COULD_NOT_CHANGE_VERTEX);
|
|
|
|
if (json === undefined) {
|
|
actions.resultBad(req, res, actions.ERROR_GRAPH_COULD_NOT_CHANGE_VERTEX, "error in request body");
|
|
return;
|
|
}
|
|
|
|
var waitForSync = g._vertices.properties().waitForSync;
|
|
if (req.parameters['waitForSync']) {
|
|
waitForSync = true;
|
|
}
|
|
|
|
var shallow = json.shallowCopy;
|
|
|
|
var id2 = null;
|
|
if (isPatch) {
|
|
var keepNull = req.parameters['keepNull'];
|
|
if (keepNull != undefined || keepNull == "false") {
|
|
keepNull = false;
|
|
}
|
|
else {
|
|
keepNull = true;
|
|
}
|
|
|
|
id2 = g._vertices.update(v._properties, json, true, keepNull, waitForSync);
|
|
}
|
|
else {
|
|
id2 = g._vertices.replace(v._properties, shallow, true, waitForSync);
|
|
}
|
|
|
|
var result = g._vertices.document(id2);
|
|
|
|
var headers = {
|
|
"Etag" : result._rev
|
|
}
|
|
|
|
var returnCode = waitForSync ? actions.HTTP_CREATED : actions.HTTP_ACCEPTED;
|
|
|
|
actions.resultOk(req, res, returnCode, { "vertex" : result }, headers );
|
|
}
|
|
catch (err) {
|
|
actions.resultBad(req, res, actions.ERROR_GRAPH_COULD_NOT_CHANGE_VERTEX, err);
|
|
}
|
|
}
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief updates a vertex
|
|
///
|
|
/// @RESTHEADER{PUT /_api/graph/@FA{graph-name}/vertex,update vertex}
|
|
///
|
|
/// @RESTQUERYPARAMETERS
|
|
///
|
|
/// @RESTQUERYPARAM{waitForSync,boolean,optional}
|
|
/// Wait until vertex has been sync to disk.
|
|
///
|
|
/// @RESTQUERYPARAM{rev,string,optional}
|
|
/// Revision of a vertex
|
|
///
|
|
/// @RESTDESCRIPTION
|
|
/// Replaces the vertex properties.
|
|
///
|
|
/// The call expects a JSON hash array as body with the new vertex properties.
|
|
///
|
|
/// Returns an object with an attribute @LIT{vertex} containing a
|
|
/// list of all vertex properties.
|
|
///
|
|
/// If the "If-Match" header is given, then it must contain exactly one
|
|
/// etag. The document is updated, if it has the same revision ad the
|
|
/// given etag. Otherwise a @LIT{HTTP 412} is returned. As an alternative
|
|
/// you can supply the etag in an attribute @LIT{rev} in the URL.
|
|
///
|
|
/// @RESTRETURNCODES
|
|
///
|
|
/// @RESTRETURNCODE{201}
|
|
/// is returned if the vertex was updated sucessfully and `waitForSync` was
|
|
/// `true`.
|
|
///
|
|
/// @RESTRETURNCODE{202}
|
|
/// is returned if the vertex was updated sucessfully and `waitForSync` was
|
|
/// `false`.
|
|
///
|
|
/// @RESTRETURNCODE{404}
|
|
/// is returned if the graph or the vertex was not found.
|
|
/// The response body contains an error document in this case.
|
|
///
|
|
/// @RESTRETURNCODE{412}
|
|
/// "If-Match" header or @LIT{rev} is given and the current vertex has
|
|
/// a different version
|
|
///
|
|
/// @EXAMPLES
|
|
///
|
|
/// @verbinclude api-graph-change-vertex
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function put_graph_vertex (req, res, g) {
|
|
update_graph_vertex(req, res, g, false);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief updates a vertex
|
|
///
|
|
/// @RESTHEADER{PATCH /_api/graph/@FA{graph-name}/vertex,update vertex}
|
|
///
|
|
/// @RESTQUERYPARAMETERS
|
|
///
|
|
/// @RESTQUERYPARAM{waitForSync,boolean,optional}
|
|
/// Wait until vertex has been sync to disk.
|
|
///
|
|
/// @RESTQUERYPARAM{rev,string,optional}
|
|
/// Revision of a vertex
|
|
///
|
|
/// @RESTQUERYPARAM{keepNull,boolean,optional}
|
|
/// Modify the behavior of the patch command to remove any attribute
|
|
///
|
|
/// @RESTDESCRIPTION
|
|
/// Partially updates the vertex properties.
|
|
///
|
|
/// The call expects a JSON hash array as body with the properties to patch.
|
|
///
|
|
/// Setting an attribute value to @LIT{null} in the patch document will cause a value
|
|
/// of @LIT{null} be saved for the attribute by default. If the intention is to
|
|
/// delete existing attributes with the patch command, the URL parameter
|
|
/// @LIT{keepNull} can be used with a value of @LIT{false}.
|
|
/// This will modify the behavior of the patch command to remove any attributes
|
|
/// from the existing document that are contained in the patch document
|
|
/// with an attribute value of @LIT{null}.
|
|
//
|
|
/// If the "If-Match" header is given, then it must contain exactly one
|
|
/// etag. The document is updated, if it has the same revision ad the
|
|
/// given etag. Otherwise a @LIT{HTTP 412} is returned. As an alternative
|
|
/// you can supply the etag in an attribute @LIT{rev} in the URL.
|
|
///
|
|
/// Returns an object with an attribute @LIT{vertex} containing a
|
|
/// list of all vertex properties.
|
|
///
|
|
/// @RESTRETURNCODES
|
|
///
|
|
/// @RESTRETURNCODE{201}
|
|
/// is returned if the vertex was updated sucessfully and `waitForSync` was
|
|
/// `true`.
|
|
///
|
|
/// @RESTRETURNCODE{202}
|
|
/// is returned if the vertex was updated sucessfully and `waitForSync` was
|
|
/// `false`.
|
|
///
|
|
/// @RESTRETURNCODE{404}
|
|
/// is returned if the graph or the vertex was not found.
|
|
/// The response body contains an error document in this case.
|
|
///
|
|
/// @RESTRETURNCODE{412}
|
|
/// "If-Match" header or @LIT{rev} is given and the current vertex has
|
|
/// a different version
|
|
///
|
|
/// @EXAMPLES
|
|
///
|
|
/// @verbinclude api-graph-changep-vertex
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function patch_graph_vertex (req, res, g) {
|
|
update_graph_vertex(req, res, g, true);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief returns the compare operator (throws exception)
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function process_property_compare (compare) {
|
|
if (compare === undefined) {
|
|
return "==";
|
|
}
|
|
|
|
switch (compare) {
|
|
case ("==") :
|
|
return compare;
|
|
|
|
case ("!=") :
|
|
return compare;
|
|
|
|
case ("<") :
|
|
return compare;
|
|
|
|
case (">") :
|
|
return compare;
|
|
|
|
case (">=") :
|
|
return compare;
|
|
|
|
case ("<=") :
|
|
return compare;
|
|
}
|
|
|
|
throw "unknow compare function in property filter";
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief fills a filter (throws exception)
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function process_property_filter (data, num, property, collname) {
|
|
if (property.key !== undefined && property.value !== undefined) {
|
|
if (data.filter === "") { data.filter = " FILTER"; } else { data.filter += " &&";}
|
|
data.filter += " " + collname + "[@key" + num.toString() + "] " +
|
|
process_property_compare(property.compare) + " @value" + num.toString();
|
|
data.bindVars["key" + num.toString()] = property.key;
|
|
data.bindVars["value" + num.toString()] = property.value;
|
|
return;
|
|
}
|
|
|
|
throw "error in property filter";
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief fills a properties filter
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function process_properties_filter (data, properties, collname) {
|
|
var i;
|
|
|
|
if (properties instanceof Array) {
|
|
for (i = 0; i < properties.length; ++i) {
|
|
process_property_filter(data, i, properties[i], collname);
|
|
}
|
|
}
|
|
else if (properties instanceof Object) {
|
|
process_property_filter(data, 0, properties, collname);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief fills a labels filter
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function process_labels_filter (data, labels) {
|
|
|
|
// filter edge labels
|
|
if (labels !== undefined && labels instanceof Array && labels.length > 0) {
|
|
if (data.edgeFilter === "") { data.edgeFilter = " FILTER"; } else { data.edgeFilter += " &&";}
|
|
data.edgeFilter += ' e["$label"] IN @labels';
|
|
data.bindVars.labels = labels;
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief gets the vertices of a graph
|
|
///
|
|
/// @RESTHEADER{POST /_api/graph/@FA{graph-name}/vertices,get vertices}
|
|
///
|
|
/// @RESTDESCRIPTION
|
|
/// Returns a cursor.
|
|
///
|
|
/// The call expects a JSON hash array as body to filter the result:
|
|
///
|
|
/// - @LIT{batchSize}: the batch size of the returned cursor
|
|
/// - @LIT{limit}: limit the result size
|
|
/// - @LIT{count}: return the total number of results (default "false")
|
|
/// - @LIT{filter}: a optional filter
|
|
///
|
|
/// The attributes of filter
|
|
/// - @LIT{properties}: filter by an array of vertex properties
|
|
///
|
|
/// The attributes of a property filter
|
|
/// - @LIT{key}: filter the result vertices by a key value pair
|
|
/// - @LIT{value}: the value of the @LIT{key}
|
|
/// - @LIT{compare}: a compare operator
|
|
//
|
|
/// @RESTRETURNCODES
|
|
///
|
|
/// @RESTRETURNCODE{201}
|
|
/// is returned if the cursor was created
|
|
///
|
|
/// @EXAMPLES
|
|
///
|
|
/// Select all vertices
|
|
///
|
|
/// @verbinclude api-graph-get-vertices
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function post_graph_all_vertices (req, res, g) {
|
|
var json = actions.getJsonBody(req, res);
|
|
|
|
if (json === undefined) {
|
|
json = {};
|
|
}
|
|
|
|
try {
|
|
var data = {
|
|
'filter': '',
|
|
'bindVars': { '@vertexColl' : g._vertices.name() }
|
|
};
|
|
|
|
var limit = "";
|
|
if (json.limit !== undefined) {
|
|
limit = " LIMIT " + parseInt(json.limit);
|
|
}
|
|
|
|
if (json.filter !== undefined && json.filter.properties !== undefined) {
|
|
process_properties_filter(data, json.filter.properties, "v");
|
|
}
|
|
|
|
// build aql query
|
|
var query = "FOR v IN @@vertexColl" + data.filter + limit + " RETURN v";
|
|
|
|
var cursor = QUERY(query,
|
|
data.bindVars,
|
|
(json.count !== undefined ? json.count : false),
|
|
json.batchSize,
|
|
(json.batchSize === undefined));
|
|
|
|
// error occurred
|
|
if (cursor instanceof ArangoError) {
|
|
actions.resultBad(req, res, cursor.errorNum, cursor.errorMessage);
|
|
return;
|
|
}
|
|
|
|
// this might dispose or persist the cursor
|
|
actions.resultCursor(req, res, cursor, actions.HTTP_CREATED,
|
|
{ countRequested: json.count ? true : false });
|
|
}
|
|
catch (err) {
|
|
actions.resultBad(req, res, actions.ERROR_GRAPH_INVALID_VERTEX, err);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief get neighbors of a vertex
|
|
///
|
|
/// @RESTHEADER{POST /_api/graph/@FA{graph-name}/vertices/@FA{vertice-name},get vertices}
|
|
///
|
|
/// @RESTDESCRIPTION
|
|
/// Returns a cursor.
|
|
///
|
|
/// The call expects a JSON hash array as body to filter the result:
|
|
///
|
|
/// - @LIT{batchSize}: the batch size of the returned cursor
|
|
/// - @LIT{limit}: limit the result size
|
|
/// - @LIT{count}: return the total number of results (default "false")
|
|
/// - @LIT{filter}: a optional filter
|
|
///
|
|
/// The attributes of filter
|
|
/// - @LIT{direction}: Filter for inbound (value "in") or outbound (value "out")
|
|
/// neighbors. Default value is "any".
|
|
/// - @LIT{labels}: filter by an array of edge labels (empty array means no restriction)
|
|
/// - @LIT{properties}: filter neighbors by an array of edge properties
|
|
///
|
|
/// The attributes of a property filter
|
|
/// - @LIT{key}: filter the result vertices by a key value pair
|
|
/// - @LIT{value}: the value of the @LIT{key}
|
|
/// - @LIT{compare}: a compare operator
|
|
///
|
|
/// @RESTRETURNCODES
|
|
///
|
|
/// @RESTRETURNCODE{201}
|
|
/// is returned if the cursor was created
|
|
///
|
|
/// @EXAMPLES
|
|
///
|
|
/// Select all vertices
|
|
///
|
|
/// @verbinclude api-graph-get-vertex-vertices
|
|
///
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function post_graph_vertex_vertices (req, res, g) {
|
|
var json = actions.getJsonBody(req, res);
|
|
|
|
if (json === undefined) {
|
|
json = {};
|
|
}
|
|
|
|
try {
|
|
var v = vertex_by_request(req, g);
|
|
|
|
var data = {
|
|
'filter' : '',
|
|
'edgeFilter' : '',
|
|
'bindVars' : {
|
|
'@vertexColl' : g._vertices.name(),
|
|
'@edgeColl' : g._edges.name(),
|
|
'id' : v._properties._id
|
|
}
|
|
};
|
|
|
|
var limit = "";
|
|
if (json.limit !== undefined) {
|
|
limit = " LIMIT " + parseInt(json.limit);
|
|
}
|
|
|
|
var direction = "all";
|
|
if (json.filter !== undefined && json.filter.direction !== undefined) {
|
|
if (json.filter.direction === "in") {
|
|
direction = "in";
|
|
}
|
|
else if (json.filter.direction === "out") {
|
|
direction = "out";
|
|
}
|
|
}
|
|
|
|
// get inbound neighbors
|
|
if (direction === "in") {
|
|
data.edgeFilter = "FILTER e._to == @id";
|
|
data.filter = "FILTER e._from == v._id";
|
|
}
|
|
// get outbound neighbors
|
|
else if (direction === "out") {
|
|
data.edgeFilter = "FILTER e._from == @id";
|
|
data.filter = "FILTER e._to == v._id";
|
|
}
|
|
// get all neighbors
|
|
else {
|
|
data.filter = "FILTER ((e._from == @id && e._to == v._id)"
|
|
+ " || (e._to == @id && e._from == v._id))";
|
|
}
|
|
|
|
if (json.filter !== undefined && json.filter.properties !== undefined) {
|
|
process_properties_filter(data, json.filter.properties, "e");
|
|
}
|
|
|
|
if (json.filter !== undefined && json.filter.labels !== undefined) {
|
|
process_labels_filter(data, json.filter.labels);
|
|
}
|
|
|
|
// build aql query
|
|
var query = "FOR e IN @@edgeColl " + data.edgeFilter
|
|
+ " FOR v IN @@vertexColl " + data.filter +
|
|
limit + " RETURN v";
|
|
|
|
var cursor = QUERY(query,
|
|
data.bindVars,
|
|
(json.count !== undefined ? json.count : false),
|
|
json.batchSize,
|
|
(json.batchSize === undefined));
|
|
|
|
// error occurred
|
|
if (cursor instanceof ArangoError) {
|
|
actions.resultBad(req, res, cursor.errorNum, cursor.errorMessage);
|
|
return;
|
|
}
|
|
|
|
// this might dispose or persist the cursor
|
|
actions.resultCursor(req,
|
|
res,
|
|
cursor,
|
|
actions.HTTP_CREATED,
|
|
{ countRequested: json.count ? true : false });
|
|
}
|
|
catch (err) {
|
|
actions.resultBad(req, res, actions.ERROR_GRAPH_INVALID_VERTEX, err);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief creates an edge
|
|
///
|
|
/// @RESTHEADER{POST /_api/graph/@FA{graph-name}/edge,create edge}
|
|
///
|
|
/// @RESTQUERYPARAMETERS
|
|
///
|
|
/// @RESTQUERYPARAM{waitForSync,boolean,optional}
|
|
/// Wait until edge has been sync to disk.
|
|
///
|
|
/// @RESTDESCRIPTION
|
|
/// Creates an edge in a graph.
|
|
///
|
|
/// The call expects a JSON hash array as body with the edge properties:
|
|
///
|
|
/// - @LIT{_key}: The name of the edge.
|
|
/// - @LIT{_from}: The name of the from vertex.
|
|
/// - @LIT{_to}: The name of the to vertex.
|
|
/// - @LIT{$label}: A label for the edge (optional).
|
|
/// - further optional attributes.
|
|
///
|
|
/// Returns an object with an attribute @LIT{edge} containing the
|
|
/// list of all edge properties.
|
|
///
|
|
/// @RESTRETURNCODES
|
|
///
|
|
/// @RESTRETURNCODE{201}
|
|
/// is returned if the edge was created sucessfully and `waitForSync` was
|
|
/// `true`.
|
|
///
|
|
/// @RESTRETURNCODE{202}
|
|
/// is returned if the edge was created sucessfully and `waitForSync` was
|
|
/// `false`.
|
|
///
|
|
/// @EXAMPLES
|
|
///
|
|
/// @verbinclude api-graph-create-edge
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function post_graph_edge (req, res, g) {
|
|
try {
|
|
var json = actions.getJsonBody(req, res, actions.ERROR_GRAPH_COULD_NOT_CREATE_EDGE);
|
|
|
|
if (json === undefined) {
|
|
actions.resultBad(req, res, actions.ERROR_GRAPH_COULD_NOT_CREATE_EDGE, "error in request body");
|
|
return;
|
|
}
|
|
|
|
var waitForSync = g._edges.properties().waitForSync;
|
|
if (req.parameters['waitForSync']) {
|
|
waitForSync = true;
|
|
}
|
|
|
|
var id = json._key;
|
|
var out = g.getVertex(json._from);
|
|
var ine = g.getVertex(json._to);
|
|
var label = json.$label;
|
|
|
|
var e = g.addEdge(out, ine, id, label, json, waitForSync);
|
|
|
|
if (e === null || e._properties === undefined) {
|
|
throw "could not create edge";
|
|
}
|
|
|
|
var headers = {
|
|
"Etag" : e._properties._rev
|
|
}
|
|
|
|
var returnCode = waitForSync ? actions.HTTP_CREATED : actions.HTTP_ACCEPTED;
|
|
|
|
actions.resultOk(req, res, returnCode, { "edge" : e._properties }, headers);
|
|
}
|
|
catch (err) {
|
|
actions.resultBad(req, res, actions.ERROR_GRAPH_COULD_NOT_CREATE_EDGE, err);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief get edge properties
|
|
///
|
|
/// @RESTHEADER{GET /_api/graph/@FA{graph-name}/edge,get edge}
|
|
///
|
|
/// @RESTQUERYPARAMETERS
|
|
///
|
|
/// @RESTQUERYPARAM{rev,string,optional}
|
|
/// Revision of an edge
|
|
///
|
|
/// @RESTDESCRIPTION
|
|
/// Returns an object with an attribute @LIT{edge} containing a
|
|
/// list of all edge properties.
|
|
///
|
|
/// If the "If-None-Match" header is given, then it must contain exactly one
|
|
/// etag. The document is returned, if it has a different revision than the
|
|
/// given etag. Otherwise a @LIT{HTTP 304} is returned.
|
|
///
|
|
/// If the "If-Match" header is given, then it must contain exactly one
|
|
/// etag. The document is returned, if it has the same revision ad the
|
|
/// given etag. Otherwise a @LIT{HTTP 412} is returned. As an alternative
|
|
/// you can supply the etag in an attribute @LIT{rev} in the URL.
|
|
///
|
|
/// @RESTRETURNCODES
|
|
///
|
|
/// @RESTRETURNCODE{200}
|
|
/// is returned if the edge was found
|
|
///
|
|
/// @RESTRETURNCODE{304}
|
|
/// "If-Match" header is given and the current edge has not a different
|
|
/// version
|
|
///
|
|
/// @RESTRETURNCODE{404}
|
|
/// is returned if the graph or edge was not found.
|
|
/// The response body contains an error document in this case.
|
|
///
|
|
/// @RESTRETURNCODE{412}
|
|
/// "If-None-Match" header or @LIT{rev} is given and the current edge has
|
|
/// a different version
|
|
///
|
|
/// @EXAMPLES
|
|
///
|
|
/// @verbinclude api-graph-get-edge
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function get_graph_edge (req, res, g) {
|
|
try {
|
|
var e = edge_by_request(req, g);
|
|
|
|
if (matchError(req, res, e._properties, actions.ERROR_GRAPH_INVALID_EDGE)) {
|
|
return;
|
|
}
|
|
|
|
var headers = {
|
|
"Etag" : e._properties._rev
|
|
}
|
|
|
|
actions.resultOk(req, res, actions.HTTP_OK, { "edge" : e._properties}, headers);
|
|
}
|
|
catch (err) {
|
|
actions.resultNotFound(req, res, actions.ERROR_GRAPH_INVALID_EDGE, err);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief deletes an edge
|
|
///
|
|
/// @RESTHEADER{DELETE /_api/graph/@FA{graph-name}/edge,delete edge}
|
|
///
|
|
/// @RESTQUERYPARAMETERS
|
|
///
|
|
/// @RESTQUERYPARAM{waitForSync,boolean,optional}
|
|
/// Wait until edge has been sync to disk.
|
|
///
|
|
/// @RESTQUERYPARAM{rev,string,optional}
|
|
/// Revision of an edge
|
|
///
|
|
/// @RESTDESCRIPTION
|
|
/// Deletes an edge of the graph
|
|
///
|
|
/// If the "If-Match" header is given, then it must contain exactly one
|
|
/// etag. The document is returned, if it has the same revision ad the
|
|
/// given etag. Otherwise a @LIT{HTTP 412} is returned. As an alternative
|
|
/// you can supply the etag in an attribute @LIT{rev} in the URL.
|
|
///
|
|
/// @RESTRETURNCODES
|
|
///
|
|
/// @RESTRETURNCODE{200}
|
|
/// is returned if the edge was deletd sucessfully and `waitForSync` was
|
|
/// `true`.
|
|
///
|
|
/// @RESTRETURNCODE{202}
|
|
/// is returned if the edge was deleted sucessfully and `waitForSync` was
|
|
/// `false`.
|
|
///
|
|
/// @RESTRETURNCODE{404}
|
|
/// is returned if the graph or the edge was not found.
|
|
/// The response body contains an error document in this case.
|
|
///
|
|
/// @RESTRETURNCODE{412}
|
|
/// "If-Match" header or @LIT{rev} is given and the current edge has
|
|
/// a different version
|
|
///
|
|
/// @EXAMPLES
|
|
///
|
|
/// @verbinclude api-graph-delete-edge
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function delete_graph_edge (req, res, g) {
|
|
try {
|
|
var e = edge_by_request(req, g);
|
|
}
|
|
catch (err) {
|
|
actions.resultNotFound(req, res, actions.ERROR_GRAPH_INVALID_EDGE, err);
|
|
return;
|
|
}
|
|
|
|
if (matchError(req, res, e._properties, actions.ERROR_GRAPH_INVALID_EDGE)) {
|
|
return;
|
|
}
|
|
|
|
var waitForSync = g._edges.properties().waitForSync;
|
|
if (req.parameters['waitForSync']) {
|
|
waitForSync = true;
|
|
}
|
|
|
|
g.removeEdge(e, waitForSync);
|
|
|
|
var returnCode = waitForSync ? actions.HTTP_OK : actions.HTTP_ACCEPTED;
|
|
|
|
actions.resultOk(req, res, returnCode, { "deleted" : true });
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief update (PUT or PATCH) an edge
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function update_graph_edge (req, res, g, isPatch) {
|
|
var e = null;
|
|
|
|
try {
|
|
e = edge_by_request(req, g);
|
|
}
|
|
catch (err) {
|
|
actions.resultNotFound(req, res, actions.ERROR_GRAPH_COULD_NOT_CHANGE_EDGE, err);
|
|
return;
|
|
}
|
|
|
|
if (matchError(req, res, e._properties, actions.ERROR_GRAPH_INVALID_EDGE)) {
|
|
return;
|
|
}
|
|
|
|
try {
|
|
var json = actions.getJsonBody(req, res, actions.ERROR_GRAPH_COULD_NOT_CHANGE_EDGE);
|
|
|
|
if (json === undefined) {
|
|
actions.resultBad(req, res, actions.ERROR_GRAPH_COULD_NOT_CHANGE_EDGE, "error in request body");
|
|
return;
|
|
}
|
|
|
|
var waitForSync = g._edges.properties().waitForSync;
|
|
if (req.parameters['waitForSync']) {
|
|
waitForSync = true;
|
|
}
|
|
|
|
var shallow = json.shallowCopy;
|
|
shallow.$label = e._properties.$label;
|
|
|
|
var id2 = null;
|
|
if (isPatch) {
|
|
var keepNull = req.parameters['keepNull'];
|
|
if (keepNull != undefined || keepNull == "false") {
|
|
keepNull = false;
|
|
}
|
|
else {
|
|
keepNull = true;
|
|
}
|
|
|
|
id2 = g._edges.update(e._properties, shallow, true, keepNull, waitForSync);
|
|
}
|
|
else {
|
|
id2 = g._edges.replace(e._properties, shallow, true, waitForSync);
|
|
}
|
|
|
|
var result = g._edges.document(id2);
|
|
|
|
var headers = {
|
|
"Etag" : result._rev
|
|
}
|
|
|
|
var returnCode = waitForSync ? actions.HTTP_CREATED : actions.HTTP_ACCEPTED;
|
|
|
|
actions.resultOk(req, res, returnCode, { "edge" : result}, headers );
|
|
}
|
|
catch (err) {
|
|
actions.resultBad(req, res, actions.ERROR_GRAPH_COULD_NOT_CHANGE_EDGE, err);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief updates an edge
|
|
///
|
|
/// @RESTHEADER{PUT /_api/graph/@FA{graph-name}/edge,update edge}
|
|
///
|
|
/// @RESTQUERYPARAMETERS
|
|
///
|
|
/// @RESTQUERYPARAM{waitForSync,boolean,optional}
|
|
/// Wait until edge has been sync to disk.
|
|
///
|
|
/// @RESTQUERYPARAM{rev,string,optional}
|
|
/// Revision of an edge
|
|
///
|
|
/// @RESTDESCRIPTION
|
|
/// Replaces the optional edge properties.
|
|
///
|
|
/// The call expects a JSON hash array as body with the new edge properties.
|
|
///
|
|
/// If the "If-Match" header is given, then it must contain exactly one
|
|
/// etag. The document is returned, if it has the same revision ad the
|
|
/// given etag. Otherwise a @LIT{HTTP 412} is returned. As an alternative
|
|
/// you can supply the etag in an attribute @LIT{rev} in the URL.
|
|
///
|
|
/// Returns an object with an attribute @LIT{edge} containing a
|
|
/// list of all edge properties.
|
|
///
|
|
/// @RESTRETURNCODES
|
|
///
|
|
/// @RESTRETURNCODE{201}
|
|
/// is returned if the edge was updated sucessfully and `waitForSync` was
|
|
/// `true`.
|
|
///
|
|
/// @RESTRETURNCODE{202}
|
|
/// is returned if the edge was updated sucessfully and `waitForSync` was
|
|
/// `false`.
|
|
///
|
|
/// @RESTRETURNCODE{404}
|
|
/// is returned if the graph or the edge was not found.
|
|
/// The response body contains an error document in this case.
|
|
///
|
|
/// @RESTRETURNCODE{412}
|
|
/// "If-Match" header or @LIT{rev} is given and the current edge has
|
|
/// a different version
|
|
///
|
|
/// @EXAMPLES
|
|
///
|
|
/// @verbinclude api-graph-change-edge
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function put_graph_edge (req, res, g) {
|
|
update_graph_edge (req, res, g, false);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief updates an edge
|
|
///
|
|
/// @RESTHEADER{PATCH /_api/graph/@FA{graph-name}/edge,update edge}
|
|
///
|
|
/// @RESTQUERYPARAMETERS
|
|
///
|
|
/// @RESTQUERYPARAM{waitForSync,boolean,optional}
|
|
/// Wait until edge has been sync to disk.
|
|
///
|
|
/// @RESTQUERYPARAM{rev,string,optional}
|
|
/// Revision of an edge
|
|
///
|
|
/// @RESTQUERYPARAM{keepNull,boolean,optional}
|
|
/// Modify the behavior of the patch command to remove any attribute
|
|
///
|
|
/// @RESTDESCRIPTION
|
|
/// Partially updates the edge properties.
|
|
///
|
|
/// The call expects a JSON hash array as body with the properties to patch.
|
|
///
|
|
/// Setting an attribute value to @LIT{null} in the patch document will cause a value
|
|
/// of @LIT{null} be saved for the attribute by default. If the intention is to
|
|
/// delete existing attributes with the patch command, the URL parameter
|
|
/// @LIT{keepNull} can be used with a value of @LIT{false}.
|
|
/// This will modify the behavior of the patch command to remove any attributes
|
|
/// from the existing document that are contained in the patch document
|
|
/// with an attribute value of @LIT{null}.
|
|
///
|
|
/// If the "If-Match" header is given, then it must contain exactly one
|
|
/// etag. The document is returned, if it has the same revision ad the
|
|
/// given etag. Otherwise a @LIT{HTTP 412} is returned. As an alternative
|
|
/// you can supply the etag in an attribute @LIT{rev} in the URL.
|
|
//
|
|
/// Returns an object with an attribute @LIT{edge} containing a
|
|
/// list of all edge properties.
|
|
///
|
|
/// @RESTRETURNCODES
|
|
///
|
|
/// @RESTRETURNCODE{201}
|
|
/// is returned if the edge was updated sucessfully and `waitForSync` was
|
|
/// `true`.
|
|
///
|
|
/// @RESTRETURNCODE{202}
|
|
/// is returned if the edge was updated sucessfully and `waitForSync` was
|
|
/// `false`.
|
|
///
|
|
/// @RESTRETURNCODE{404}
|
|
/// is returned if the graph or the edge was not found.
|
|
/// The response body contains an error document in this case.
|
|
///
|
|
/// @RESTRETURNCODE{412}
|
|
/// "If-Match" header or @LIT{rev} is given and the current edge has
|
|
/// a different version
|
|
///
|
|
/// @EXAMPLES
|
|
///
|
|
/// @verbinclude api-graph-changep-edge
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function patch_graph_edge (req, res, g) {
|
|
update_graph_edge (req, res, g, true);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief get edges of a graph
|
|
///
|
|
/// @RESTHEADER{POST /_api/graph/@FA{graph-name}/edges,get edges}
|
|
///
|
|
/// @RESTDESCRIPTION
|
|
/// Returns a cursor.
|
|
///
|
|
/// The call expects a JSON hash array as body to filter the result:
|
|
///
|
|
/// - @LIT{batchSize}: the batch size of the returned cursor
|
|
/// - @LIT{limit}: limit the result size
|
|
/// - @LIT{count}: return the total number of results (default "false")
|
|
/// - @LIT{filter}: a optional filter
|
|
///
|
|
/// The attributes of filter
|
|
/// - @LIT{labels}: filter by an array of edge labels
|
|
/// - @LIT{properties}: filter by an array of edge properties
|
|
///
|
|
/// The attributes of a property filter
|
|
/// - @LIT{key}: filter the result edges by a key value pair
|
|
/// - @LIT{value}: the value of the @LIT{key}
|
|
/// - @LIT{compare}: a compare operator
|
|
///
|
|
/// @RESTRETURNCODES
|
|
///
|
|
/// @RESTRETURNCODE{201}
|
|
/// is returned if the cursor was created
|
|
///
|
|
/// @EXAMPLES
|
|
///
|
|
/// Select all edges
|
|
///
|
|
/// @verbinclude api-graph-get-edges
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function post_graph_all_edges (req, res, g) {
|
|
var json = actions.getJsonBody(req, res);
|
|
|
|
if (json === undefined) {
|
|
json = {};
|
|
}
|
|
|
|
try {
|
|
|
|
var data = {
|
|
'filter' : '',
|
|
'edgeFilter' : '',
|
|
'bindVars' : {
|
|
'@edgeColl' : g._edges.name()
|
|
}
|
|
};
|
|
|
|
var limit = "";
|
|
if (json.limit !== undefined) {
|
|
limit = " LIMIT " + parseInt(json.limit);
|
|
}
|
|
|
|
if (json.filter !== undefined && json.filter.properties !== undefined) {
|
|
process_properties_filter(data, json.filter.properties, "e");
|
|
data.edgeFilter = data.filter;
|
|
}
|
|
|
|
if (json.filter !== undefined && json.filter.labels !== undefined) {
|
|
process_labels_filter(data, json.filter.labels);
|
|
}
|
|
|
|
var query = "FOR e IN @@edgeColl" + data.edgeFilter + limit + " RETURN e";
|
|
|
|
var cursor = QUERY(query,
|
|
data.bindVars,
|
|
(json.count !== undefined ? json.count : false),
|
|
json.batchSize,
|
|
(json.batchSize === undefined));
|
|
|
|
// error occurred
|
|
if (cursor instanceof ArangoError) {
|
|
actions.resultBad(req, res, cursor.errorNum, cursor.errorMessage);
|
|
return;
|
|
}
|
|
|
|
// this might dispose or persist the cursor
|
|
actions.resultCursor(req,
|
|
res,
|
|
cursor,
|
|
actions.HTTP_CREATED,
|
|
{ countRequested: json.count ? true : false });
|
|
}
|
|
catch (err) {
|
|
actions.resultBad(req, res, actions.ERROR_GRAPH_INVALID_VERTEX, err);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief get edges of a vertex
|
|
///
|
|
/// @RESTHEADER{POST /_api/graph/@FA{graph-name}/edges/@FA{vertex-name},get edges}
|
|
///
|
|
/// @REST{POST /_api/graph/@FA{graph-name}/edges/@FA{vertex-name}}
|
|
///
|
|
/// Returns a cursor.
|
|
///
|
|
/// The call expects a JSON hash array as body to filter the result:
|
|
///
|
|
/// - @LIT{batchSize}: the batch size of the returned cursor
|
|
/// - @LIT{limit}: limit the result size
|
|
/// - @LIT{count}: return the total number of results (default "false")
|
|
/// - @LIT{filter}: a optional filter
|
|
///
|
|
/// The attributes of filter
|
|
/// - @LIT{direction}: Filter for inbound (value "in") or outbound (value "out")
|
|
/// neighbors. Default value is "any".
|
|
/// - @LIT{labels}: filter by an array of edge labels
|
|
/// - @LIT{properties}: filter neighbors by an array of properties
|
|
///
|
|
/// The attributes of a property filter
|
|
/// - @LIT{key}: filter the result vertices by a key value pair
|
|
/// - @LIT{value}: the value of the @LIT{key}
|
|
/// - @LIT{compare}: a compare operator
|
|
///
|
|
/// @RESTRETURNCODES
|
|
///
|
|
/// @RESTRETURNCODE{201}
|
|
/// is returned if the cursor was created
|
|
///
|
|
/// @EXAMPLES
|
|
///
|
|
/// Select all edges
|
|
///
|
|
/// @verbinclude api-graph-get-vertex-edges
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function post_graph_vertex_edges (req, res, g) {
|
|
var json = actions.getJsonBody(req, res);
|
|
|
|
if (json === undefined) {
|
|
json = {};
|
|
}
|
|
|
|
try {
|
|
var v = vertex_by_request(req, g);
|
|
|
|
var data = {
|
|
'filter' : '',
|
|
'edgeFilter' : '',
|
|
'bindVars' : {
|
|
'@edgeColl' : g._edges.name(),
|
|
'id' : v._properties._id
|
|
}
|
|
};
|
|
|
|
var limit = "";
|
|
if (json.limit !== undefined) {
|
|
limit = " LIMIT " + parseInt(json.limit);
|
|
}
|
|
|
|
var direction = "all";
|
|
if (json.filter !== undefined && json.filter.direction !== undefined) {
|
|
if (json.filter.direction === "in") {
|
|
direction = "in";
|
|
}
|
|
else if (json.filter.direction === "out") {
|
|
direction = "out";
|
|
}
|
|
}
|
|
|
|
// get inbound neighbors
|
|
if (direction === "in") {
|
|
data.edgeFilter = "FILTER e._to == @id";
|
|
}
|
|
// get outbound neighbors
|
|
else if (direction === "out") {
|
|
data.edgeFilter = "FILTER e._from == @id";
|
|
}
|
|
// get all neighbors
|
|
else {
|
|
data.edgeFilter = "FILTER (e._from == @id || e._to == @id)";
|
|
}
|
|
|
|
if (json.filter !== undefined && json.filter.properties !== undefined) {
|
|
data.filter = data.edgeFilter;
|
|
process_properties_filter(data, json.filter.properties, "e");
|
|
data.edgeFilter = data.filter;
|
|
}
|
|
|
|
if (json.filter !== undefined && json.filter.labels !== undefined) {
|
|
process_labels_filter(data, json.filter.labels);
|
|
}
|
|
|
|
var query = "FOR e IN @@edgeColl " + data.edgeFilter + limit + " RETURN e";
|
|
|
|
var cursor = QUERY(query,
|
|
data.bindVars,
|
|
(json.count !== undefined ? json.count : false),
|
|
json.batchSize,
|
|
(json.batchSize === undefined));
|
|
|
|
// error occurred
|
|
if (cursor instanceof ArangoError) {
|
|
actions.resultBad(req, res, cursor.errorNum, cursor.errorMessage);
|
|
return;
|
|
}
|
|
|
|
// this might dispose or persist the cursor
|
|
actions.resultCursor(req,
|
|
res,
|
|
cursor,
|
|
actions.HTTP_CREATED,
|
|
{ countRequested: json.count ? true : false });
|
|
}
|
|
catch (err) {
|
|
actions.resultBad(req, res, actions.ERROR_GRAPH_INVALID_VERTEX, err);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief handle POST /_api/graph/<...>/vertices
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function post_graph_vertices (req, res, g) {
|
|
if (req.suffix.length > 2) {
|
|
post_graph_vertex_vertices (req, res, g);
|
|
}
|
|
else {
|
|
post_graph_all_vertices (req, res, g);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief handle POST /_api/graph/<...>/edges
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function post_graph_edges (req, res, g) {
|
|
if (req.suffix.length > 2) {
|
|
post_graph_vertex_edges (req, res, g);
|
|
}
|
|
else {
|
|
post_graph_all_edges (req, res, g);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief handle post requests
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function post_graph (req, res) {
|
|
if (req.suffix.length === 0) {
|
|
// POST /_api/graph
|
|
post_graph_graph(req, res);
|
|
}
|
|
else if (req.suffix.length > 1) {
|
|
// POST /_api/graph/<key>/...
|
|
try {
|
|
var g = graph_by_request(req);
|
|
}
|
|
catch (err) {
|
|
actions.resultNotFound(req, res, actions.ERROR_GRAPH_INVALID_GRAPH, err);
|
|
return;
|
|
}
|
|
|
|
switch (req.suffix[1]) {
|
|
case ("vertex") :
|
|
post_graph_vertex(req, res, g);
|
|
break;
|
|
|
|
case ("edge") :
|
|
post_graph_edge(req, res, g);
|
|
break;
|
|
|
|
case ("vertices") :
|
|
post_graph_vertices(req, res, g);
|
|
break;
|
|
|
|
case ("edges") :
|
|
post_graph_edges(req, res, g);
|
|
break;
|
|
|
|
default:
|
|
actions.resultUnsupported(req, res);
|
|
}
|
|
|
|
}
|
|
else {
|
|
actions.resultUnsupported(req, res);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief handle get requests
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function get_graph (req, res) {
|
|
if (req.suffix.length === 0) {
|
|
// GET /_api/graph
|
|
actions.resultUnsupported(req, res);
|
|
}
|
|
else if (req.suffix.length === 1) {
|
|
// GET /_api/graph/<key>
|
|
get_graph_graph(req, res);
|
|
}
|
|
else {
|
|
// GET /_api/graph/<key>/...
|
|
try {
|
|
var g = graph_by_request(req);
|
|
}
|
|
catch (err) {
|
|
actions.resultNotFound(req, res, actions.ERROR_GRAPH_INVALID_GRAPH, err);
|
|
return;
|
|
}
|
|
|
|
switch (req.suffix[1]) {
|
|
case ("vertex") :
|
|
get_graph_vertex(req, res, g);
|
|
break;
|
|
|
|
case ("edge") :
|
|
get_graph_edge(req, res, g);
|
|
break;
|
|
|
|
default:
|
|
actions.resultUnsupported(req, res);
|
|
}
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief handle put requests
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function put_graph (req, res) {
|
|
if (req.suffix.length < 2) {
|
|
// PUT /_api/graph
|
|
actions.resultUnsupported(req, res);
|
|
}
|
|
else {
|
|
// PUT /_api/graph/<key>/...
|
|
try {
|
|
var g = graph_by_request(req);
|
|
}
|
|
catch (err) {
|
|
actions.resultNotFound(req, res, actions.ERROR_GRAPH_INVALID_GRAPH, err);
|
|
return;
|
|
}
|
|
|
|
switch (req.suffix[1]) {
|
|
case ("vertex") :
|
|
put_graph_vertex(req, res, g);
|
|
break;
|
|
|
|
case ("edge") :
|
|
put_graph_edge(req, res, g);
|
|
break;
|
|
|
|
default:
|
|
actions.resultUnsupported(req, res);
|
|
}
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief handle patch requests
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function patch_graph (req, res) {
|
|
if (req.suffix.length < 2) {
|
|
// PATCH /_api/graph
|
|
actions.resultUnsupported(req, res);
|
|
}
|
|
else {
|
|
// PATCH /_api/graph/<key>/...
|
|
try {
|
|
var g = graph_by_request(req);
|
|
}
|
|
catch (err) {
|
|
actions.resultNotFound(req, res, actions.ERROR_GRAPH_INVALID_GRAPH, err);
|
|
return;
|
|
}
|
|
|
|
switch (req.suffix[1]) {
|
|
case ("vertex") :
|
|
patch_graph_vertex(req, res, g);
|
|
break;
|
|
|
|
case ("edge") :
|
|
patch_graph_edge(req, res, g);
|
|
break;
|
|
|
|
default:
|
|
actions.resultUnsupported(req, res);
|
|
}
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief handle delete requests
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function delete_graph (req, res) {
|
|
if (req.suffix.length === 0) {
|
|
// DELETE /_api/graph
|
|
actions.resultUnsupported(req, res);
|
|
}
|
|
else if (req.suffix.length === 1) {
|
|
// DELETE /_api/graph/<key>
|
|
delete_graph_graph(req, res);
|
|
}
|
|
else {
|
|
// DELETE /_api/graph/<key>/...
|
|
try {
|
|
var g = graph_by_request(req);
|
|
}
|
|
catch (err) {
|
|
actions.resultNotFound(req, res, actions.ERROR_GRAPH_INVALID_GRAPH, err);
|
|
return;
|
|
}
|
|
|
|
switch (req.suffix[1]) {
|
|
case ("vertex") :
|
|
delete_graph_vertex(req, res, g);
|
|
break;
|
|
|
|
case ("edge") :
|
|
delete_graph_edge(req, res, g);
|
|
break;
|
|
|
|
default:
|
|
actions.resultUnsupported(req, res);
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief actions gateway
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
actions.defineHttp({
|
|
url : GRAPH_URL_PREFIX,
|
|
context : GRAPH_CONTEXT,
|
|
|
|
callback : function (req, res) {
|
|
try {
|
|
switch (req.requestType) {
|
|
case (actions.POST) :
|
|
post_graph(req, res);
|
|
break;
|
|
|
|
case (actions.DELETE) :
|
|
delete_graph(req, res);
|
|
break;
|
|
|
|
case (actions.GET) :
|
|
get_graph(req, res);
|
|
break;
|
|
|
|
case (actions.PUT) :
|
|
put_graph(req, res);
|
|
break;
|
|
|
|
case (actions.PATCH) :
|
|
patch_graph(req, res);
|
|
break;
|
|
|
|
default:
|
|
actions.resultUnsupported(req, res);
|
|
}
|
|
}
|
|
catch (err) {
|
|
actions.resultException(req, res, err);
|
|
}
|
|
}
|
|
});
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @}
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// --SECTION-- END-OF-FILE
|
|
// -----------------------------------------------------------------------------
|
|
|
|
// Local Variables:
|
|
// mode: outline-minor
|
|
// outline-regexp: "^\\(/// @brief\\|/// @addtogroup\\|// --SECTION--\\|/// @page\\|/// @}\\)"
|
|
// End:
|