OrientDB: missing "half edges" - orientdb

Question

I'm still playing with OrientDB.
Now I'm trying the schema functionalities, that look awesome :-)
I have two data files: joinA.txt and joinB.txt, which I used to populate a database with the following schema (the content of the two files is at the end of the post):
CREATE CLASS Employee EXTENDS V;
CREATE PROPERTY Employee.eid Integer;
CREATE PROPERTY Employee.name String;
CREATE PROPERTY Employee.eage Short;
CREATE INDEX Employee.eid unique_hash_index;
CREATE CLASS ExtendedProfile EXTENDS V;
CREATE CLASS XYZProfile EXTENDS ExtendedProfile;
CREATE PROPERTY XYZProfile.textual String;
-- SameAs can only connect Employees to ExtendedProfile
CREATE CLASS SameAs EXTENDS E; -- same employee across many tables
CREATE PROPERTY SameAs.out LINK ExtendedProfile;
CREATE PROPERTY SameAs.In LINK Employee;
The JSONs I gave to the ETL tool are, for JoinA:
{
"source": { "file": {"path": "the_path"}},
"extractor": {"csv": {
"separator": " ",
"columns": [
"eid:Integer",
"name:String",
"eage:Short"
]
}
},
"transformers": [
{"vertex": {"class": "Employee", "skipDuplicates": true}}
]
,"loader": {
"orientdb": {
"dbURL": "plocal:thepath",
"dbType": "graph",
"useLightweightEdges": false
}
}
}
and for JoinB:
{
"source": { "file": {"path": "thepath"}},
"extractor": {"csv": {
"separator": " ",
"columnsOnFirstLine": false,
"quote": "\"",
"columns": [
"id:String",
"textual:String"
]
}
},
"transformers": [
{"vertex": {"class": "XYZProfile", "skipDuplicates": true}},
{ "edge": { "class": "SameAs",
"direction": "out",
"joinFieldName": "id",
"lookup":"Employee.eid",
"unresolvedLinkAction":"ERROR"}},
],
"loader": {
"orientdb": {
"dbURL": "path",
"dbUser": "root",
"dbPassword": "pwd",
"dbType": "graph",
"useLightweightEdges": false}
}
}
Now, the problem is that when I run select expand(both()) from Employee I get the edges in the column out_SameAs, while when I run select expand(both()) from XYZProfile I get nothing.
This is weird since the first query told me that the #CLASS pointed by the edges is XYZProfile.
Does anybody know what's wrong with my example?
Cheers,
Alberto
JoinA:
1 A 10
2 B 14
3 C 22
JoinB:
1 i0
1 i1
2 i2

Answer 1

Check out your JSON file, I think there is an error on your JSON file. You forget to put [] at the beginning and ending of the JSON file.

Answer 2

It was actually my fault.
The line CREATE PROPERTY SameAs.In LINK Employee; was the problem: In should have been all lowercased, as pointed out here.