Try creating the Knows edge class prior to creating the actual edge.

See if that works.

-Colin

Orient Technologies

The Company behind OrientDB


On Thursday, April 16, 2015 at 2:40:41 PM UTC-5, [email protected] wrote:
>
> I am using orientdb 2.0.7
> I cannot create lightweight edges in the console 
>
> I executed 
> alter database custom useLightweightEdges=true
>
> If I try to create a lightweight edge labeled "knows" I get the following 
> error:
> Error: com.orientechnologies.orient.core.sql.OCommandSQLParsingException: 
> Error on parsing command at position #0: Class 'KNOWS' was not found
>
>
>
> I am able to create lightweight edges using gremlin.
>
>
> orientdb> create database 
>> plocal:/home/kyle/Downloads/orientdb-community-2.0.7/databases/ledge_test2 
>> admin admin
>> Creating database 
>> [plocal:/home/kyle/Downloads/orientdb-community-2.0.7/databases/ledge_test2] 
>> using the storage type [plocal]...
>> Database created successfully.
>> Current database is: 
>> plocal:/home/kyle/Downloads/orientdb-community-2.0.7/databases/ledge_test2
>> orientdb {db=ledge_test2}> alter database custom useLightweightEdges=true
>> Database updated successfully
>> orientdb {db=ledge_test2}> insert into V set myid = 1
>> Inserted record 'V#9:0{myid:1} v1' in 0.007000 sec(s).
>> orientdb {db=ledge_test2}> insert into V set myid = 2
>> Inserted record 'V#9:1{myid:2} v1' in 0.001000 sec(s).
>> orientdb {db=ledge_test2}> create edge knows from #9:0 to #9:1
>> Error: com.orientechnologies.orient.core.sql.OCommandSQLParsingException: 
>> Error on parsing command at position #0: Class 'KNOWS' was not found
>> orientdb {db=ledge_test2}> disconnect
>> Disconnecting from the database [ledge_test2]...OK
>> orientdb> exit
>
>
> now go to gremlin console!
>
> gremlin> g = new OrientGraph("remote:localhost/ledge_test2")
>> Apr 16, 2015 12:32:55 PM com.orientechnologies.common.log.OLogManager log
>> INFO: OrientDB auto-config DISKCACHE=13,498MB (heap=455MB os=16,002MB 
>> disk=30,513MB)
>> ==>orientgraph[remote:localhost/ledge_test2]
>> gremlin> g.isUseLightweightEdges()
>> ==>true
>> gremlin> v1=g.V[0].next();v2=g.V[1].next();
>> ==>v[#9:1]
>> gremlin> e=v1.addEdge("knows",v2)
>> ==>e[#9:0->#9:1][#9:0-knows->#9:1]
>> gremlin> e
>> ==>e[#9:0->#9:1][#9:0-knows->#9:1]
>> gremlin> e.isLightweight()
>> ==>true
>
>
>
> there are closed issues on github so I figured I'd ask here first in case 
> I'm doing something wrong.
> https://github.com/orientechnologies/orientdb/issues/3271
>
>

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