arangodb

问题 Using ArangoDB documentation version 3.3 or version 3.4 for the Getting Started section of Foxx Microservices, I can't get past this error: Failed to load API definition. NetworkError when attempting to fetch resource. http://192.168.1.1:8529/_db/_system/_admin/aardvark/foxxes/docs/swagger.json?mount=/getting-started That error is shown on the API tab of the service. After installing my service according to the tutorial, I get the service's card as described. I click that card and then click

问题 Background I have a rocksdb collection that contains three fields: _id, author, subreddit. Problem I would like to create a Arango graph that creates a graph connecting these two existing columns. But the examples and the drivers seem to only accept collections as its edge definitions. Issue The ArangoDb documentation is lacking information on how I can create a graph using edges and nodes pulled from the same collection. EDIT: Solution This was fixed with a code change at this Arangodb

问题 I'm using SpringBoot 1.5.4.RELEASE, ArangoDB java driver 4.5.0, Arango Spring Data 1.1.5 I'm getting this error when retrieving an object. com.arangodb.velocypack.exception.VPackParserException: java.lang.InstantiationException: com.arangodb.springframework.core.convert.DBEntity I can't find the root cause yet (still looking) but I can see where the error is being thrown, in the class VPack there is this method private <T> T createInstance(final Type type) throws InstantiationException,

问题 I'm trying to build V8 as part of ArangoDB using the official build scripts and following the official Windows build instructions. The compilation fails for all v8* targets ( v8-build.bat ): msbuild All.sln /t:v8 /p:Configuration=Release /p:Platform=x64 msbuild All.sln /t:v8_libbase /p:Configuration=Release /p:Platform=x64 msbuild All.sln /t:v8_libplatform /p:Configuration=Release /p:Platform=x64 error MSB4057: The target "v8" does not exist in the project. If I open the solution file in

问题 I have trace enabled and I see following message being printed out like 10k times with in a second. 2016-03-12T18:14:56Z [31136] TRACE [C:\b\ArangoDB-2.8.4\arangod\Wal\CollectorThread.cpp:750] wal collector couldn't acquire write lock for collection '39659811' Following are the figures of the collection. Type Count Size Info Datafiles 57 1.79 GB Journals 1 32 MB Compactors 0 0 B Shape files 0 0 B Indexes 3 890.2 MB Type Count Info Shapes 239 Attributes 77 Uncollected 221145 References 1 Type

问题 I'm trying to understand how to intersect two results in ArangoDB and my scenario looks like this. I can easily find users living in Spain, Island or Europe with the query: FOR x IN 1..3 INBOUND "places/Europe" situedIn,livesIn FILTER IS_SAME_COLLECTION('users',x) return x What I want to understand is the best way to extend the search capabilities to include Profession: Example: Return all Police in Spain (returns [A]) Return all Police in Europe (returns [A]) Return all Legal in Europe

问题 I'm trying to learn how to develop Foxx services. There are many examples where people use: const someCollection = module.context.collection('someCollectionName'); But in my project this code doesn't work. someCollection always null, but it's exist in collections. And this code works perfectly: const db = require('@arangodb').db; const someCollection = db._collection('someCollectionName'); My question is why first code isn't work? 回答1: Foxx services are intended to have their own collections,

问题 What for are logfiles in: "arango_instance_database/journals/logfile-xxxxxx.db Can I delete them ? How can I reduce their size ? I set database.maximal-journal-size = 1048576 but those files are still 32M large. Can I set some directory for them like /var/log/... ? 回答1: You're referencing the Write Ahead Logfiles which are at least temporarily the files your data is kept in. So its a very bad idea to remove them on your own, as long as you still like your data to be intact. The files are used

问题 I'm doing manual parsing and importing of data from arangodump, which contains records of every revision of every document. The problem is, I cannot tell which item is the latest revision. (This is also problematic in the case of deleted documents where there would be records in the arangodump with a revision but with an empty document.) From the docs: Clients can use revisions ids to perform simple equality/non-equality comparisons (e.g. to check whether a document has changed or not), but

问题 I'm having difficulty getting Arango 1.4.9 working on my Windows 2008 Standard (SP2) server. It's a fresh install. When I try to start Arango Server I receive this message: The procedure entry point TryAcquireSRWLockExclusive could not be located in the dynamic link library KERNEL32.dll I have tried both the 64bit and 32bit versions. I have run the installer as an administrator and vice versa. Any ideas? 回答1: TryAcquireSRWLockExclusive is from a newer Windows API. The Windows 2008r2 build