arcanefoam
commented
4 years ago Hi,
From a look at your configuration everything seems OK. I will take a look at the source code and get back to you.
Cheers
On Wed, 22 Jan 2020, 10:40 jpelayo, notifications@github.com wrote:
Hi!
I'm trying to learn Gremlin by using it over ArangoDB. It looks quite straigtforward as only the console and a plugin seem to be needed.
I'm getting a java.lang.NullPointerException when loading the graph. Before that, I was warned to declare a missing relation in the config file, but as soon as the config file seems correct, the exception is thrown without further info.
The only piece might be missing is the Tinkerpop server, but the doc says that ArangoDB is compatible with the console "out of the box", and the connection is there because the collections are being checked if there is a config error.
This is my test graph: [image: Captura de pantalla 2020-01-22 a las 11 22 32] https://user-images.githubusercontent.com/10059639/72886766-b42c7080-3d0a-11ea-894e-b5287ce3e263.jpg [image: Captura de pantalla 2020-01-22 a las 11 22 03] https://user-images.githubusercontent.com/10059639/72886865-e2aa4b80-3d0a-11ea-9790-0487e26736fe.jpg
This is my config:
gremlin.graph = com.arangodb.tinkerpop.gremlin.structure.ArangoDBGraph gremlin.arangodb.conf.graph.vertex = testfrom gremlin.arangodb.conf.graph.vertex = testto gremlin.arangodb.conf.graph.edge = testedge gremlin.arangodb.conf.graph.relation = testedge:testfrom->testto gremlin.arangodb.conf.graph.shouldPrefixCollectionNames = false gremlin.arangodb.conf.graph.db = Test02gremlin.arangodb.conf.graph.name = Test02Graph01 gremlin.arangodb.conf.arangodb.user = xxxxx gremlin.arangodb.conf.arangodb.password = xxxxx gremlin.arangodb.conf.arangodb.hosts = 127.0.0.1:8529 gremlin.arangodb.conf.arangodb.usessl = false
note: on OSX 10.14.6, Java SE RE (build 1.8.0_161-b12)
This is the error:
gremlin> :plugin list ==>tinkerpop.server[active] ==>tinkerpop.gephi ==>tinkerpop.utilities[active] ==>tinkerpop.arangodb[active] ==>tinkerpop.sugar ==>tinkerpop.credentials ==>tinkerpop.tinkergraph[active] gremlin> config = new org.apache.commons.configuration.PropertiesConfiguration("/Users/pelayo/Applications/TinkerPop/arangotest.properties") ==>org.apache.commons.configuration.PropertiesConfiguration@2b917fb0 gremlin> g = ArangoDBGraph.open(config) java.lang.NullPointerException Type ':help' or ':h' for help. Display stack trace? [yN]_ java.lang.NullPointerException at com.arangodb.tinkerpop.gremlin.client.ArangoDBGraphClient.getGraphVariables(ArangoDBGraphClient.java:494) at com.arangodb.tinkerpop.gremlin.structure.ArangoDBGraph.
(ArangoDBGraph.java:601) at com.arangodb.tinkerpop.gremlin.structure.ArangoDBGraph.open(ArangoDBGraph.java:543) at com.arangodb.tinkerpop.gremlin.structure.ArangoDBGraph$open.call(Unknown Source) I know that there is an obvious misstep somewhere. Can someone take a moment to take a look at it, please?
Thanks!
PS: if I delete the line gremlin.arangodb.conf.graph.edge = testedge in the config, the error changes, so there is a nice connection:
gremlin> g = ArangoDBGraph.open(config) WARN com.arangodb.tinkerpop.gremlin.structure.ArangoDBGraph - Empty edges collection(s), the default 'edge' collection will be used. java.lang.NullPointerException
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jpelayo
Hi!
I'm trying to learn Gremlin by using it over ArangoDB. It looks quite straigtforward as only the console and a plugin seem to be needed.
I'm getting a java.lang.NullPointerException when loading the graph. Before that, I was warned to declare a missing relation in the config file, but as soon as the config file seems correct, the exception is thrown without further info.
The only piece might be missing is the Tinkerpop server, but the doc says that ArangoDB is compatible with the console "out of the box", and the connection is there because the collections are being checked if there is a config error.
This is my test graph:
This is my config:
note: on OSX 10.14.6, Java SE RE (build 1.8.0_161-b12)
This is the error:
I know that there is an obvious misstep somewhere. Can someone please point me in the right direction?
Thanks!
PS: if I delete the line gremlin.arangodb.conf.graph.edge = testedge in the config, the error changes, so there is a nice connection:
PS2: Problem is similar with the gremlin server.
Config (properties):
Config (yaml):
Output: