[TINKERPOP-2228] by(valueMap(true)) drops all properties during query

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Cannot Reproduce
• Affects Version/s: 3.4.1
• Component/s: javascript
• Environment: MacOS Mojave 10.14.4
• Assignee: Unassigned
• Reporter: Byron Bailey
• Created: 24/May/19 14:11
• Updated: 27/Jun/19 14:14
• Resolved: 27/Jun/19 14:14

Description

When using the by(valueMap(true)) step when using the gremlin javascript plugin, a result set is returned but the properties are all missing.  The same query works from the console.  Additionally, the same query without by(valueMap(true)) returns a valid result set.

 

Below is the sample code with the output, along with the same query against the same graph using the console.  The test case is a simple server architecture with a "host" node having three edges connecting it to 2 "vm" nodes and a chassis node.  I have also tried the identical query using client.submit() and receive failed results.

 

const g = traversal().withRemote(new DriverRemoteConnection('ws://localhost:8182/gremlin'));{{}}
const __ = gremlin.process.statics;
 
function getNeighbors(label, uuid){       

  console.log("> getNeighbors "+label+"["+uuid+"]");     
  
  return g.V()         
    .has(label,"uuid",uuid)
    .bothE()
    .otherV()
    .path()
    .by(__.valueMap(true))
    .toList() 
}

getNeighbors("host", "host1")
.then(results => {{{  }}
    console.log("Sending results..."+JSON.stringify(results)); 
});

OUTPUT:

> getNeighbors host[host1]
Sending results...[{"labels":[[],[],[]],"objects":[{},{},{}]},{"labels":[[],[],[]],"objects":[{},{},{}]},{"labels":[[],[],[]],"objects":[{},{},{}]}]

 
Same query from console:

gremlin> g.V().has("host","uuid","host1").bothE().otherV().path().by(valueMap(true)).toList()
==>path[
{id=1, label=host, model=[D-host], manufacturer=[Dell], name=[host1], uuid=[host1]}, {id=0, label=MOUNTED_IN, uuid=6ca30477-80e2-4df6-9e00-10adddc0c04f, name=host1 to chassis1, slots=1}, {id=0, label=chassis, model=[D-chassis], manufacturer=[Dell], name=[chassis1], uuid=[chassis1]}]

==>path[{id=1, label=host, model=[D-host], manufacturer=[Dell], name=[host1], uuid=[host1]}

, {id=20, label=MOUNTED_IN, uuid=ea0b7e49-9738-4624-86e7-ba57de873120, name=vm1 to host1},
{id=22, label=vm, name=[vm1], uuid=[vm1]}

]

==>path[
{id=1, label=host, model=[D-host], manufacturer=[Dell], name=[host1], uuid=[host1]}
, {id=16, label=MOUNTED_IN, uuid=966ad71a-ad09-4877-93b2-14779edf3ba9, name=vm2 to host1},
{id=21, label=vm, name=[vm2], uuid=[vm2]}
]

 

 If I remove the .by(__.valueMap(true)) from the javascript query, I receive the following valid output:

 

> getNeighbors host[host1]
Sending results...[{"labels":[[],[],[]],"objects":[
{"id":1,"label":"host"}
,{"id":0,"label":"MOUNTED_IN","outV":1,"inV":0,"properties":{}},{"id":0,"label":"chassis"}]},{"labels":[[],[],[]],"objects":[
{"id":1,"label":"host"}
,{"id":20,"label":"MOUNTED_IN","outV":22,"inV":1,"properties":{}},{"id":22,"label":"vm"}]},{"labels":[[],[],[]],"objects":[
{"id":1,"label":"host"}
,{"id":16,"label":"MOUNTED_IN","outV":21,"inV":1,"properties":{}},{"id":21,"label":"vm"}]}]