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example graphs now checking if dependencies exist

This commit is contained in:
hkernbach 2015-11-24 15:34:13 +01:00
parent 5bd26e6e62
commit a58157f6b4
1 changed files with 40 additions and 10 deletions
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50
js/common/modules/org/arangodb/graph-examples/example-graph.js
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@ -29,9 +29,13 @@
////////////////////////////////////////////////////////////////////////////////
var Graph = require("org/arangodb/general-graph");
var db = require("internal").db;
var arangodb = require("org/arangodb");
var ArangoError = arangodb.ArangoError;
// we create a graph with 'knows' pointing from 'persons' to 'persons'
var createTraversalExample = function() {
// we create a graph with 'knows' pointing from 'persons' to 'persons'
var g = Graph._create("knows_graph",
[Graph._relation("knows", "persons", "persons")]
);
@ -48,8 +52,8 @@ var createTraversalExample = function() {
return g;
};
// we create a graph with 'relation' pointing from 'female' to 'male' and 'male
var createSocialGraph = function() {
// we create a graph with 'relation' pointing from 'female' to 'male' and 'male
var edgeDefinition = [];
edgeDefinition.push(Graph._relation("relation", ["female", "male"], ["female", "male"]));
var g = Graph._create("social", edgeDefinition);
@ -75,6 +79,7 @@ var createRoutePlannerGraph = function() {
edgeDefinition.push(Graph._relation(
"internationalHighway", ["frenchCity", "germanCity"], ["frenchCity", "germanCity"])
);
var g = Graph._create("routeplanner", edgeDefinition);
var berlin = g.germanCity.save({_key: "Berlin", population : 3000000, isCapital : true});
var cologne = g.germanCity.save({_key: "Cologne", population : 1000000, isCapital : false});
@ -973,13 +978,13 @@ var createMoviesGraph = function (prefixed) {
var knownGraphs = {
"knows_graph" : createTraversalExample,
"routeplanner" : createRoutePlannerGraph,
"social" : createSocialGraph,
"worldCountry" : createWorldCountryGraph,
"worldCountryUnManaged" : createWorldCountryGraphUnManaged,
"traversalGraph" : createTraversalGraph,
"movies" : createMoviesGraph
"knows_graph" : {create: createTraversalExample, dependencies: ["knows", "persons"]},
"routeplanner" : {create: createRoutePlannerGraph, dependencies: ["frenchHighway", "frenchCity", "germanCity", "germanHighway", "internationalHighway"]},
"social" : {create: createSocialGraph, dependencies: ["relation", "female", "male"]},
"worldCountry" : {create: createWorldCountryGraph, dependencies: ["worldVertices", "worldEdges"]},
"worldCountryUnManaged" : {create: createWorldCountryGraphUnManaged, dependencies: ["worldVertices", "worldEdges"]},
"traversalGraph" : {create: createTraversalGraph, dependencies: ["edges", "circles"]},
"movies" : {create: createMoviesGraph, dependencies: ["Person", "Movie", "ACTED_IN" ,"DIRECTED", "PRODUCED", "WROTE", "REVIEWED", "FOLLOWS"]}
};
var unManagedGraphs = {
@ -1010,9 +1015,34 @@ var loadGraph = function (name, prefixed) {
// trying to drop an unknown graph - better not do it
return false;
}
else {
var collections = [];
db._collections().forEach(function(c) {
collections.push(c.name());
});
var dependencies = [];
knownGraphs[name].dependencies.forEach(function(val) {
collections.forEach(function (c) {
if (val === c) {
dependencies.push(val);
}
});
});
if (dependencies.length > 0) {
var err = new ArangoError();
err.errorNum = arangodb.ERROR_ARANGO_DUPLICATE_NAME;
err.errorMessage = "the collections: " + JSON.stringify(dependencies) + " already exists. Please clean up and try again.";
throw err;
return false;
}
}
dropGraph(name);
return knownGraphs[name](prefixed);
return knownGraphs[name].create(prefixed);
};
exports.loadGraph = loadGraph;