mirror of https://gitee.com/bigwinds/arangodb
1237 lines
33 KiB
JavaScript
1237 lines
33 KiB
JavaScript
/*jshint strict: false */
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/*global AQL_EXECUTE */
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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 2014 ArangoDB 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 ArangoDB 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 2014, ArangoDB GmbH, Cologne, Germany
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/// @author Copyright 2012, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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var actions = require("@arangodb/actions");
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var graph = require("@arangodb/graph-blueprint");
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var arangodb = require("@arangodb");
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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 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" error 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"].replace(/(^["']|["']$)/g, '')) {
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// error
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res.responseCode = actions.HTTP_NOT_MODIFIED;
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res.contentType = "application/json; charset=utf-8";
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res.body = '';
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res.headers = {};
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return true;
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}
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}
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if (req.headers["if-match"] !== undefined) {
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if (doc._rev !== req.headers["if-match"].replace(/(^["']|["']$)/g, '')) {
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// error
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actions.resultError(req,
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res,
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actions.HTTP_PRECONDITION_FAILED,
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errorCode,
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"wrong revision",
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{});
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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,
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res,
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actions.HTTP_PRECONDITION_FAILED,
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errorCode,
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"wrong revision",
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{});
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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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function post_graph_graph (req, res) {
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try {
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var json = actions.getJsonBody(req, res, arangodb.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, arangodb.ERROR_GRAPH_COULD_NOT_CREATE_GRAPH, err);
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}
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}
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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, arangodb.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, arangodb.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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////////////////////////////////////////////////////////////////////////////////
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function delete_graph_graph (req, res) {
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var g;
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try {
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var name = req.suffix[0];
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var exists = arangodb.db._collection('_graphs').exists(name);
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try {
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g = graph_by_request(req);
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if (g === null || g === undefined) {
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throw "graph not found";
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}
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}
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catch (graphNotFound) {
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if (exists) {
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graph.Graph.drop(name);
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actions.resultOk(req, res, actions.HTTP_OK, { "deleted" : true });
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}
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}
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}
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catch (err) {
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actions.resultNotFound(req, res, arangodb.ERROR_GRAPH_INVALID_GRAPH, err);
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return;
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}
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if (matchError(req, res, g._properties, arangodb.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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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, arangodb.ERROR_GRAPH_COULD_NOT_CREATE_VERTEX, err);
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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function get_graph_vertex (req, res, g) {
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var v;
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try {
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v = vertex_by_request(req, g);
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}
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catch (err) {
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actions.resultNotFound(req, res, arangodb.ERROR_GRAPH_INVALID_VERTEX, err);
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return;
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}
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if (matchError(req, res, v._properties, arangodb.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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////////////////////////////////////////////////////////////////////////////////
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function delete_graph_vertex (req, res, g) {
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var v;
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try {
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v = vertex_by_request(req, g);
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}
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catch (err) {
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actions.resultNotFound(req, res, arangodb.ERROR_GRAPH_INVALID_VERTEX, err);
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return;
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}
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if (matchError(req, res, v._properties, arangodb.ERROR_GRAPH_INVALID_VERTEX)) {
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return;
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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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g.removeVertex(v, 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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/// @brief update (PUT or PATCH) a vertex
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////////////////////////////////////////////////////////////////////////////////
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function update_graph_vertex (req, res, g, isPatch) {
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var v = null;
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try {
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v = vertex_by_request(req, g);
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}
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catch (err) {
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actions.resultNotFound(req, res, arangodb.ERROR_GRAPH_COULD_NOT_CHANGE_VERTEX, err);
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return;
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}
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if (matchError(req, res, v._properties, arangodb.ERROR_GRAPH_INVALID_VERTEX)) {
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return;
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}
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try {
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var json = actions.getJsonBody(req, res, arangodb.ERROR_GRAPH_COULD_NOT_CHANGE_VERTEX);
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if (json === undefined) {
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actions.resultBad(req,
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res,
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arangodb.ERROR_GRAPH_COULD_NOT_CHANGE_VERTEX,
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"error in request body");
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return;
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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 shallow = json._shallowCopy;
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var id2 = null;
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if (isPatch) {
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var keepNull = req.parameters.keepNull;
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if (keepNull !== undefined || keepNull === "false") {
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keepNull = false;
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}
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else {
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keepNull = true;
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}
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id2 = g._vertices.update(v._properties, json, true, keepNull, waitForSync);
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}
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else {
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id2 = g._vertices.replace(v._properties, shallow, true, waitForSync);
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}
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var result = g._vertices.document(id2);
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var headers = {
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"Etag" : result._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" : result }, headers );
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}
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catch (err2) {
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actions.resultBad(req, res, arangodb.ERROR_GRAPH_COULD_NOT_CHANGE_VERTEX, err2);
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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function put_graph_vertex (req, res, g) {
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update_graph_vertex(req, res, g, false);
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}
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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function patch_graph_vertex (req, res, g) {
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update_graph_vertex(req, res, g, true);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief returns the compare operator (throws exception)
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////////////////////////////////////////////////////////////////////////////////
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function process_property_compare (compare) {
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if (compare === undefined) {
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return "==";
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}
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switch (compare) {
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case ("==") :
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return compare;
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case ("!=") :
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return compare;
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case ("<") :
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return compare;
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case (">") :
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return compare;
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case (">=") :
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return compare;
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case ("<=") :
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return compare;
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}
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throw "unknown compare function in property filter";
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief fills a filter (throws exception)
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////////////////////////////////////////////////////////////////////////////////
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function process_property_filter (data, num, property, collname) {
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if (property.key !== undefined && property.compare === "HAS") {
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if (data.filter === "") { data.filter = " FILTER"; } else { data.filter += " &&";}
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data.filter += " HAS(" + collname + ", @key" + num.toString() + ") ";
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data.bindVars["key" + num.toString()] = property.key;
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return;
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}
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if (property.key !== undefined && property.compare === "HAS_NOT") {
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if (data.filter === "") { data.filter = " FILTER"; } else { data.filter += " &&";}
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data.filter += " !HAS(" + collname + ", @key" + num.toString() + ") ";
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data.bindVars["key" + num.toString()] = property.key;
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return;
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}
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if (property.key !== undefined && property.value !== undefined) {
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if (data.filter === "") { data.filter = " FILTER"; } else { data.filter += " &&";}
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data.filter += " " + collname + "[@key" + num.toString() + "] " +
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process_property_compare(property.compare) + " @value" + num.toString();
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data.bindVars["key" + num.toString()] = property.key;
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data.bindVars["value" + num.toString()] = property.value;
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return;
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}
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throw "error in property filter";
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}
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|
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////////////////////////////////////////////////////////////////////////////////
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/// @brief fills a properties filter
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////////////////////////////////////////////////////////////////////////////////
|
|
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function process_properties_filter (data, properties, collname) {
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var i;
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if (properties instanceof Array) {
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for (i = 0; i < properties.length; ++i) {
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process_property_filter(data, i, properties[i], collname);
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}
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}
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else if (properties instanceof Object) {
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process_property_filter(data, 0, properties, collname);
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}
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}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
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/// @brief fills a labels filter
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////////////////////////////////////////////////////////////////////////////////
|
|
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function process_labels_filter (data, labels, collname) {
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|
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// filter edge labels
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if (labels !== undefined && labels instanceof Array && labels.length > 0) {
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if (data.filter === "") { data.filter = " FILTER"; } else { data.filter += " &&";}
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data.filter += ' ' + collname + '["$label"] IN @labels';
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data.bindVars.labels = labels;
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}
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|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function post_graph_all_vertices (req, res, g) {
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var json = actions.getJsonBody(req, res);
|
|
|
|
if (json === undefined) {
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json = {};
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|
}
|
|
|
|
try {
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|
var data = {
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|
'filter': '',
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|
'bindVars': { '@vertexColl' : g._vertices.name() }
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|
};
|
|
|
|
var limit = "";
|
|
if (json.limit !== undefined) {
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|
limit = " LIMIT " + parseInt(json.limit, 10);
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|
}
|
|
|
|
if (json.filter !== undefined && json.filter.properties !== undefined) {
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|
process_properties_filter(data, json.filter.properties, "v");
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|
}
|
|
|
|
// build aql query
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|
var query = "FOR v IN @@vertexColl" + data.filter + limit + " RETURN v";
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|
|
|
var options = {
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count: json.count || false,
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batchSize: json.batchSize || 1000
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};
|
|
|
|
var cursor = AQL_EXECUTE(query, data.bindVars, options);
|
|
// error occurred
|
|
if (cursor instanceof Error) {
|
|
actions.resultBad(req, res, cursor);
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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, arangodb.ERROR_GRAPH_INVALID_VERTEX, err);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
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' : '',
|
|
'bindVars' : {
|
|
'@vertexColl' : g._vertices.name(),
|
|
'@edgeColl' : g._edges.name(),
|
|
'id' : v._properties._id
|
|
}
|
|
};
|
|
|
|
var limit = "";
|
|
if (json.limit !== undefined) {
|
|
limit = " LIMIT " + parseInt(json.limit, 10);
|
|
}
|
|
|
|
var direction = "any";
|
|
if (json.filter !== undefined && json.filter.direction !== undefined) {
|
|
if (json.filter.direction === "in") {
|
|
direction = "inbound";
|
|
}
|
|
else if (json.filter.direction === "out") {
|
|
direction = "outbound";
|
|
}
|
|
}
|
|
|
|
if (json.filter !== undefined && json.filter.properties !== undefined) {
|
|
process_properties_filter(data, json.filter.properties, "n.edge");
|
|
}
|
|
|
|
if (json.filter !== undefined && json.filter.labels !== undefined) {
|
|
process_labels_filter(data, json.filter.labels, "n.edge");
|
|
}
|
|
|
|
// build aql query
|
|
var query = 'FOR n IN NEIGHBORS( @@vertexColl, @@edgeColl, @id, "' + direction + '", null, ' +
|
|
'{ includeData: true }) ' + data.filter + limit + " RETURN n.vertex ";
|
|
|
|
var options = {
|
|
count: json.count,
|
|
batchSize: json.batchSize || 1000
|
|
};
|
|
|
|
var cursor = AQL_EXECUTE(query, data.bindVars, options);
|
|
|
|
// error occurred
|
|
if (cursor instanceof Error) {
|
|
actions.resultBad(req, res, cursor);
|
|
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, arangodb.ERROR_GRAPH_INVALID_VERTEX, err);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function post_graph_edge (req, res, g) {
|
|
try {
|
|
var json = actions.getJsonBody(req, res, arangodb.ERROR_GRAPH_COULD_NOT_CREATE_EDGE);
|
|
|
|
if (json === undefined) {
|
|
actions.resultBad(req,
|
|
res,
|
|
arangodb.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, arangodb.ERROR_GRAPH_COULD_NOT_CREATE_EDGE, err);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function get_graph_edge (req, res, g) {
|
|
var e;
|
|
|
|
try {
|
|
e = edge_by_request(req, g);
|
|
|
|
if (matchError(req, res, e._properties, arangodb.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, arangodb.ERROR_GRAPH_INVALID_EDGE, err);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function delete_graph_edge (req, res, g) {
|
|
var e;
|
|
|
|
try {
|
|
e = edge_by_request(req, g);
|
|
}
|
|
catch (err) {
|
|
actions.resultNotFound(req, res, arangodb.ERROR_GRAPH_INVALID_EDGE, err);
|
|
return;
|
|
}
|
|
|
|
if (matchError(req, res, e._properties, arangodb.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, arangodb.ERROR_GRAPH_COULD_NOT_CHANGE_EDGE, err);
|
|
return;
|
|
}
|
|
|
|
if (matchError(req, res, e._properties, arangodb.ERROR_GRAPH_INVALID_EDGE)) {
|
|
return;
|
|
}
|
|
|
|
try {
|
|
var json = actions.getJsonBody(req, res, arangodb.ERROR_GRAPH_COULD_NOT_CHANGE_EDGE);
|
|
|
|
if (json === undefined) {
|
|
actions.resultBad(req,
|
|
res,
|
|
arangodb.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;
|
|
if (json.hasOwnProperty('_from')) {
|
|
shallow._from = json._from;
|
|
}
|
|
if (json.hasOwnProperty('_to')) {
|
|
shallow._to = json._to;
|
|
}
|
|
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 (err2) {
|
|
actions.resultBad(req, res, arangodb.ERROR_GRAPH_COULD_NOT_CHANGE_EDGE, err2);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function put_graph_edge (req, res, g) {
|
|
update_graph_edge (req, res, g, false);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function patch_graph_edge (req, res, g) {
|
|
update_graph_edge (req, res, g, true);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
function post_graph_all_edges (req, res, g) {
|
|
var json = actions.getJsonBody(req, res);
|
|
|
|
if (json === undefined) {
|
|
json = {};
|
|
}
|
|
|
|
try {
|
|
|
|
var data = {
|
|
'filter' : '',
|
|
'bindVars' : {
|
|
'@edgeColl' : g._edges.name()
|
|
}
|
|
};
|
|
|
|
var limit = "";
|
|
if (json.limit !== undefined) {
|
|
limit = " LIMIT " + parseInt(json.limit, 10);
|
|
}
|
|
|
|
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, "e");
|
|
}
|
|
|
|
var query = "FOR e IN @@edgeColl" + data.filter + limit + " RETURN e";
|
|
|
|
var options = {
|
|
count: json.count,
|
|
batchSize: json.batchSize || 1000
|
|
};
|
|
var cursor = AQL_EXECUTE(query, data.bindVars, options);
|
|
|
|
// error occurred
|
|
if (cursor instanceof Error) {
|
|
actions.resultBad(req, res, cursor);
|
|
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, arangodb.ERROR_GRAPH_INVALID_VERTEX, err);
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
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' : '',
|
|
'bindVars' : {
|
|
'@edgeColl' : g._edges.name(),
|
|
'id' : v._properties._id
|
|
}
|
|
};
|
|
|
|
var limit = "";
|
|
if (json.limit !== undefined) {
|
|
limit = " LIMIT " + parseInt(json.limit, 10);
|
|
}
|
|
|
|
var direction = "any";
|
|
if (json.filter !== undefined && json.filter.direction !== undefined) {
|
|
if (json.filter.direction === "in") {
|
|
direction = "inbound";
|
|
}
|
|
else if (json.filter.direction === "out") {
|
|
direction = "outbound";
|
|
}
|
|
}
|
|
|
|
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, "e");
|
|
}
|
|
|
|
var query = 'FOR e in EDGES( @@edgeColl , @id , "' + direction + '") '
|
|
+ data.filter + limit + " RETURN e";
|
|
|
|
var options = {
|
|
count: json.count,
|
|
batchSize: json.batchSize || 1000
|
|
};
|
|
|
|
var cursor = AQL_EXECUTE(query, data.bindVars, options);
|
|
|
|
// error occurred
|
|
if (cursor instanceof Error) {
|
|
actions.resultBad(req, res, cursor);
|
|
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, arangodb.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) {
|
|
var g;
|
|
|
|
// POST /_api/graph/<key>/...
|
|
try {
|
|
g = graph_by_request(req);
|
|
}
|
|
catch (err) {
|
|
actions.resultNotFound(req, res, arangodb.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: return all graphs
|
|
|
|
actions.resultOk(req, res, actions.HTTP_OK, { "graphs" : graph.Graph.getAll() });
|
|
}
|
|
else if (req.suffix.length === 1) {
|
|
// GET /_api/graph/<key>
|
|
get_graph_graph(req, res);
|
|
}
|
|
else {
|
|
var g;
|
|
|
|
// GET /_api/graph/<key>/...
|
|
try {
|
|
g = graph_by_request(req);
|
|
}
|
|
catch (err) {
|
|
actions.resultNotFound(req, res, arangodb.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 {
|
|
var g;
|
|
|
|
// PUT /_api/graph/<key>/...
|
|
try {
|
|
g = graph_by_request(req);
|
|
}
|
|
catch (err) {
|
|
actions.resultNotFound(req, res, arangodb.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 {
|
|
var g;
|
|
|
|
// PATCH /_api/graph/<key>/...
|
|
try {
|
|
g = graph_by_request(req);
|
|
}
|
|
catch (err) {
|
|
actions.resultNotFound(req, res, arangodb.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 {
|
|
var g;
|
|
|
|
// DELETE /_api/graph/<key>/...
|
|
try {
|
|
g = graph_by_request(req);
|
|
}
|
|
catch (err) {
|
|
actions.resultNotFound(req, res, arangodb.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
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////////////////////////////////////////////////////////////////////////////////
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actions.defineHttp({
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url : GRAPH_URL_PREFIX,
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callback : function (req, res) {
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try {
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switch (req.requestType) {
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case (actions.POST) :
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post_graph(req, res);
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break;
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case (actions.DELETE) :
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delete_graph(req, res);
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break;
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case (actions.GET) :
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get_graph(req, res);
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break;
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case (actions.PUT) :
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put_graph(req, res);
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break;
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case (actions.PATCH) :
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patch_graph(req, res);
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break;
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default:
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actions.resultUnsupported(req, res);
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}
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}
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catch (err) {
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actions.resultException(req, res, err, undefined, false);
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}
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}
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});
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