mirror of https://gitee.com/bigwinds/arangodb
613 lines
16 KiB
JavaScript
613 lines
16 KiB
JavaScript
/*jslint indent: 2, nomen: true, maxlen: 100, white: true plusplus: true */
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/*global $, d3, _, console, document*/
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/*global AbstractAdapter*/
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////////////////////////////////////////////////////////////////////////////////
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/// @brief Graph functionality
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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 2010-2012 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 Michael Hackstein
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/// @author Copyright 2011-2013, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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function ArangoAdapter(nodes, edges, config) {
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"use strict";
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if (nodes === undefined) {
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throw "The nodes have to be given.";
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}
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if (edges === undefined) {
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throw "The edges have to be given.";
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}
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if (config === undefined) {
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throw "A configuration with node- and edgeCollection has to be given.";
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}
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if (config.graph === undefined) {
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if (config.nodeCollection === undefined) {
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throw "The nodeCollection or a graphname has to be given.";
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}
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if (config.edgeCollection === undefined) {
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throw "The edgeCollection or a graphname has to be given.";
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}
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}
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var self = this,
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absAdapter,
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absConfig = {},
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api = {},
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queries = {},
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nodeCollection,
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edgeCollection,
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arangodb,
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direction,
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setNodeCollection = function(name) {
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nodeCollection = name;
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api.node = api.base + "document?collection=" + nodeCollection;
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},
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setEdgeCollection = function(name) {
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edgeCollection = name;
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api.edge = api.base + "edge?collection=" + edgeCollection;
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},
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getCollectionsFromGraph = function(name) {
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$.ajax({
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cache: false,
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type: 'GET',
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async: false,
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url: api.graph + "/" + name,
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contentType: "application/json",
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success: function(data) {
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setNodeCollection(data.graph.vertices);
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setEdgeCollection(data.graph.edges);
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}
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});
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},
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parseConfig = function(config) {
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if (config.host === undefined) {
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arangodb = "http://" + document.location.host;
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} else {
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arangodb = config.host;
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}
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if (config.width !== undefined) {
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absAdapter.setWidth(config.width);
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}
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if (config.height !== undefined) {
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absAdapter.setHeight(config.height);
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}
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if (config.undirected !== undefined) {
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if (config.undirected === true) {
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direction = "any";
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} else {
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direction = "outbound";
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}
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} else {
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direction = "outbound";
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}
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api.base = arangodb.lastIndexOf("http://", 0) === 0
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? arangodb + "/_api/"
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: "http://" + arangodb + "/_api/";
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api.cursor = api.base + "cursor";
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api.graph = api.base + "graph";
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api.collection = api.base + "collection/";
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api.document = api.base + "document/";
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api.any = api.base + "simple/any";
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if (config.graph) {
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getCollectionsFromGraph(config.graph);
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} else {
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setNodeCollection(config.nodeCollection);
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setEdgeCollection(config.edgeCollection);
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}
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},
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sendQuery = function(query, bindVars, onSuccess) {
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if (query !== queries.getAllGraphs) {
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if (query !== queries.connectedEdges) {
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bindVars["@nodes"] = nodeCollection;
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}
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if (query !== queries.childrenCentrality) {
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bindVars.dir = direction;
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}
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bindVars["@edges"] = edgeCollection;
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}
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var data = {
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query: query,
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bindVars: bindVars
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};
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$.ajax({
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type: "POST",
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url: api.cursor,
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data: JSON.stringify(data),
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contentType: "application/json",
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dataType: "json",
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processData: false,
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success: function(data) {
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onSuccess(data.result);
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},
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error: function(data) {
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try {
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console.log(data.statusText);
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throw "[" + data.errorNum + "] " + data.errorMessage;
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}
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catch (e) {
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console.log(e);
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throw "Undefined ERROR";
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}
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}
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});
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},
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getNRandom = function(n, callback) {
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var list = [],
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i = 0,
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onSuccess = function(data) {
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list.push(data.document || {});
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if (list.length === n) {
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callback(list);
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}
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};
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for (i = 0; i < n; i++) {
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$.ajax({
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cache: false,
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type: 'PUT',
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url: api.any,
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data: JSON.stringify({
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collection: nodeCollection
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}),
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contentType: "application/json",
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success: onSuccess
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});
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}
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},
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parseResultOfTraversal = function (result, callback) {
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if (result.length === 0) {
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if (callback) {
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callback({
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errorCode: 404
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});
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}
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return;
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}
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result = result[0];
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var inserted = {},
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n = absAdapter.insertNode(result[0].vertex),
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oldLength = nodes.length,
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com, buckets;
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_.each(result, function(visited) {
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var node = absAdapter.insertNode(visited.vertex),
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path = visited.path;
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if (oldLength < nodes.length) {
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inserted[node._id] = node;
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oldLength = nodes.length;
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}
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_.each(path.vertices, function(connectedNode) {
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var ins = absAdapter.insertNode(connectedNode);
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if (oldLength < nodes.length) {
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inserted[ins._id] = ins;
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oldLength = nodes.length;
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}
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});
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_.each(path.edges, function(edge) {
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absAdapter.insertEdge(edge);
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});
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});
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delete inserted[n._id];
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absAdapter.checkSizeOfInserted(inserted);
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absAdapter.checkNodeLimit(n);
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if (callback) {
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callback(n);
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}
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},
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/* Archive
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parseResultOfQuery = function (result, callback) {
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_.each(result, function (node) {
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var n = findNode(node._id);
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if (!n) {
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absAdapter.insertNode(node);
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n = node;
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} else {
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n.children = node.children;
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}
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self.requestCentralityChildren(node._id, function(c) {
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n._centrality = c;
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});
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_.each(n.children, function(id) {
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var check = findNode(id),
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newnode;
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if (check) {
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absAdapter.insertEdge(n, check);
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self.requestCentralityChildren(id, function(c) {
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n._centrality = c;
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});
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} else {
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newnode = {_id: id};
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absAdapter.insertNode(newnode);
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absAdapter.insertEdge(n, newnode);
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self.requestCentralityChildren(id, function(c) {
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newnode._centrality = c;
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});
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}
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});
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if (callback) {
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callback(n);
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}
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});
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},
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*/
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permanentlyRemoveEdgesOfNode = function (nodeId) {
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sendQuery(queries.connectedEdges, {
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id: nodeId
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}, function(res) {
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_.each(res, self.deleteEdge);
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});
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};
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if (config.prioList) {
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absConfig.prioList = config.prioList;
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}
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absAdapter = new AbstractAdapter(nodes, edges, this, absConfig);
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parseConfig(config);
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queries.getAllGraphs = "FOR g IN _graphs"
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+ " return g._key";
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queries.randomDocuments = "FOR u IN @@nodes"
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+ " sort rand()"
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+ " limit 10"
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+ " return u";
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queries.nodeById = "FOR n IN @@nodes"
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+ " FILTER n._id == @id"
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+ " LET links = ("
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+ " FOR l IN @@edges"
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+ " FILTER n._id == l._from"
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+ " FOR t IN @@nodes"
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+ " FILTER t._id == l._to"
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+ " RETURN t._id"
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+ " )"
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+ " RETURN MERGE(n, {\"children\" : links})";
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queries.traversalById = "RETURN TRAVERSAL("
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+ "@@nodes, "
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+ "@@edges, "
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+ "@id, "
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+ "@dir, {"
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+ "strategy: \"depthfirst\","
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+ "maxDepth: 1,"
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+ "paths: true"
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+ "})";
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queries.traversalByAttribute = function(attr) {
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return "FOR n IN @@nodes"
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+ " FILTER n." + attr
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+ " == @value"
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+ " RETURN TRAVERSAL("
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+ "@@nodes, "
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+ "@@edges, "
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+ "n._id, "
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+ "@dir, {"
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+ "strategy: \"depthfirst\","
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+ "maxDepth: 1,"
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+ "paths: true"
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+ "})";
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};
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queries.childrenCentrality = "FOR u IN @@nodes"
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+ " FILTER u._id == @id"
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+ " LET g = ("
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+ " FOR l in @@edges"
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+ " FILTER l._from == u._id"
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+ " RETURN 1 )"
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+ " RETURN length(g)";
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queries.connectedEdges = "FOR e IN @@edges"
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+ " FILTER e._to == @id"
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+ " || e._from == @id"
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+ " RETURN e";
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/* Archive
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self.oldLoadNodeFromTreeById = function(nodeId, callback) {
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sendQuery(queries.nodeById, {
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id: nodeId
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}, function(res) {
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parseResultOfQuery(res, callback);
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});
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};
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*/
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self.explore = absAdapter.explore;
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self.loadNode = function(nodeId, callback) {
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self.loadNodeFromTreeById(nodeId, callback);
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};
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self.loadInitialNode = function(nodeId, callback) {
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absAdapter.cleanUp();
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var cb = function(n) {
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callback(absAdapter.insertInitialNode(n));
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};
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self.loadNode(nodeId, cb);
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};
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self.loadNodeFromTreeById = function(nodeId, callback) {
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sendQuery(queries.traversalById, {
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id: nodeId
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}, function(res) {
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parseResultOfTraversal(res, callback);
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});
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};
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self.loadNodeFromTreeByAttributeValue = function(attribute, value, callback) {
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sendQuery(queries.traversalByAttribute(attribute), {
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value: value
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}, function(res) {
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parseResultOfTraversal(res, callback);
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});
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};
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self.loadInitialNodeByAttributeValue = function(attribute, value, callback) {
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absAdapter.cleanUp();
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var cb = function(n) {
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callback(absAdapter.insertInitialNode(n));
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};
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self.loadNodeFromTreeByAttributeValue(attribute, value, cb);
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};
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self.requestCentralityChildren = function(nodeId, callback) {
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sendQuery(queries.childrenCentrality,{
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id: nodeId
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}, function(res) {
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callback(res[0]);
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});
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};
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self.createEdge = function (edgeToAdd, callback) {
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$.ajax({
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cache: false,
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type: "POST",
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url: api.edge + "&from=" + edgeToAdd.source._id + "&to=" + edgeToAdd.target._id,
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data: JSON.stringify({}),
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dataType: "json",
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contentType: "application/json",
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processData: false,
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success: function(data) {
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data._from = edgeToAdd.source._id;
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data._to = edgeToAdd.target._id;
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delete data.error;
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var edge = absAdapter.insertEdge(data);
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callback(edge);
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},
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error: function(data) {
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throw data.statusText;
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}
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});
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};
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self.deleteEdge = function (edgeToRemove, callback) {
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$.ajax({
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cache: false,
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type: "DELETE",
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url: api.document + edgeToRemove._id,
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contentType: "application/json",
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dataType: "json",
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processData: false,
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success: function() {
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absAdapter.removeEdge(edgeToRemove);
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if (callback !== undefined && _.isFunction(callback)) {
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callback();
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}
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},
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error: function(data) {
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throw data.statusText;
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}
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});
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};
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self.patchEdge = function (edgeToPatch, patchData, callback) {
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$.ajax({
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cache: false,
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type: "PUT",
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url: api.document + edgeToPatch._id,
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data: JSON.stringify(patchData),
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dataType: "json",
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contentType: "application/json",
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processData: false,
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success: function(data) {
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edgeToPatch._data = $.extend(edgeToPatch._data, patchData);
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callback();
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},
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error: function(data) {
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throw data.statusText;
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}
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});
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};
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self.createNode = function (nodeToAdd, callback) {
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$.ajax({
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cache: false,
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type: "POST",
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url: api.node,
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data: JSON.stringify(nodeToAdd),
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dataType: "json",
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contentType: "application/json",
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processData: false,
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success: function(data) {
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if (data.error === false) {
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nodeToAdd._key = data._key;
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nodeToAdd._id = data._id;
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nodeToAdd._rev = data._rev;
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absAdapter.insertNode(nodeToAdd);
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callback(nodeToAdd);
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}
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},
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error: function(data) {
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throw data.statusText;
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}
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});
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};
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self.deleteNode = function (nodeToRemove, callback) {
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$.ajax({
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cache: false,
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type: "DELETE",
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url: api.document + nodeToRemove._id,
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dataType: "json",
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contentType: "application/json",
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processData: false,
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success: function() {
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absAdapter.removeEdgesForNode(nodeToRemove);
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permanentlyRemoveEdgesOfNode(nodeToRemove._id);
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absAdapter.removeNode(nodeToRemove);
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if (callback !== undefined && _.isFunction(callback)) {
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callback();
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}
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},
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error: function(data) {
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throw data.statusText;
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}
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});
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};
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self.patchNode = function (nodeToPatch, patchData, callback) {
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$.ajax({
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cache: false,
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type: "PUT",
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url: api.document + nodeToPatch._id,
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data: JSON.stringify(patchData),
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dataType: "json",
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contentType: "application/json",
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processData: false,
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success: function(data) {
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nodeToPatch._data = $.extend(nodeToPatch._data, patchData);
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callback(nodeToPatch);
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},
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error: function(data) {
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throw data.statusText;
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}
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});
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};
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self.changeToCollections = function (nodesCol, edgesCol, dir) {
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absAdapter.cleanUp();
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setNodeCollection(nodesCol);
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setEdgeCollection(edgesCol);
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if (dir !== undefined) {
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if (dir === true) {
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direction = "any";
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} else {
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direction = "outbound";
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}
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}
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};
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self.changeToGraph = function (name, dir) {
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absAdapter.cleanUp();
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getCollectionsFromGraph(name);
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if (dir !== undefined) {
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if (dir === true) {
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direction = "any";
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} else {
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direction = "outbound";
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}
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}
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};
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self.setNodeLimit = function (pLimit, callback) {
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absAdapter.setNodeLimit(pLimit, callback);
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};
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self.setChildLimit = function (pLimit) {
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absAdapter.setChildLimit(pLimit);
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};
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self.expandCommunity = function (commNode, callback) {
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absAdapter.expandCommunity(commNode);
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if (callback !== undefined) {
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callback();
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}
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};
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self.getCollections = function(callback) {
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if (callback && callback.length >= 2) {
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$.ajax({
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cache: false,
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type: "GET",
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url: api.collection,
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contentType: "application/json",
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dataType: "json",
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processData: false,
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success: function(data) {
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var cols = data.collections,
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docs = [],
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edgeCols = [];
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_.each(cols, function(c) {
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if (!c.name.match(/^_/)) {
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if (c.type === 3) {
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edgeCols.push(c.name);
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} else if (c.type === 2){
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docs.push(c.name);
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}
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}
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});
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callback(docs, edgeCols);
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},
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error: function(data) {
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throw data.statusText;
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}
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});
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}
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};
|
|
|
|
self.getGraphs = function(callback) {
|
|
if (callback && callback.length >= 1) {
|
|
sendQuery(
|
|
queries.getAllGraphs,
|
|
{},
|
|
callback
|
|
);
|
|
}
|
|
};
|
|
|
|
self.getAttributeExamples = function(callback) {
|
|
if (callback && callback.length >= 1) {
|
|
getNRandom(10, function(l) {
|
|
var ret = _.sortBy(
|
|
_.uniq(
|
|
_.flatten(
|
|
_.map(l, function(o) {
|
|
return _.keys(o);
|
|
})
|
|
)
|
|
), function(e) {
|
|
return e.toLowerCase();
|
|
}
|
|
);
|
|
callback(ret);
|
|
});
|
|
}
|
|
};
|
|
|
|
self.setWidth = absAdapter.setWidth;
|
|
self.changeTo = absAdapter.changeTo;
|
|
self.getPrioList = absAdapter.getPrioList;
|
|
}
|