Re: Titan to Janus - Change in behavior for properties with the same name but different datatypes.
Bharat Dighe <bdi...@...>
Thanks Abhay and Marc.
It came as a bit surprise due to existing behavior in Titan.
This is a bit restrictive given the nature of my app where other than few fixed properties which are defined by the system, rest of the properties are stamped by external sources.
I will need to redesign the app given this finding.
Bharat
On Sunday, October 6, 2019 at 9:00:57 AM UTC-7, Abhay Pandit wrote:
Hi Bharat,
Janusgraph being more consistent it stores only one PropertyKey with a defined any defined name with only one data type throughout the graph.
Like in your case "Status" can't be of 2 data type in a graph.Thanks,
AbhayOn Sun, 6 Oct 2019 at 01:03, <ma...@...> wrote:--Hi Bharat,I understand your annoyance while porting your application, but to me the JanusGraph behaviour seems to be more consistent (by the way, I did not check the difference in behaviour you report, I just took your observation for granted). If you want the old Titan behaviour you can simply typecast your variable-type properties to their common denominator (like String, Long, Double, Object, whatever does the job) before you pass them to JanusGraph.HTH, Marc
Op zaterdag 5 oktober 2019 07:31:56 UTC+2 schreef Bharat Dighe:There is a significant difference in the way Titan and Janus handles properties with the same name which have values with different datatypes.Titan allows it but Janus does not.I am in a process to port my app which is using Titan to Janus and this is causing a major issue. In my app the properites are added dynamically. Other than few fixed properties and there is no predictibility of which properties and their datatypes.Is there a way Janus can be made to behave same as Titan?here is an example of the difference of behavior between Titan and JanusTitan=====gremlin> v1=graph.addVertex();==>v[4144]gremlin> v2=graph.addVertex();==>v[4096]gremlin> v1.property("status", 1);==>vp[status->1]gremlin> v2.property("status","connected"); ==>vp[status->connected]gremlin> v1.property("size", 2000000)==>vp[size->2000000]gremlin> v2.property("size", 3000000000);==>vp[size->3000000000]gremlin> v1.property("status").value().getClass(); ==>class java.lang.Integergremlin> v2.property("status").value().getClass(); ==>class java.lang.Stringgremlin> v1.property("size").value().getClass(); ==>class java.lang.Integergremlin> v2.property("size").value().getClass(); ==>class java.lang.LongJanus=====gremlin> v1=graph.addVertex();==>v[4104]gremlin> v2=graph.addVertex();==>v[4176]gremlin> v1.property("status", 1);==>vp[status->1]gremlin> graph.tx().commit();==>nullgremlin> v2.property("status","connected"); Value [connected] is not an instance of the expected data type for property key [status] and cannot be converted. Expected: class java.lang.Integer, found: class java.lang.StringType ':help' or ':h' for help.Display stack trace? [yN]ngremlin> v1.property("size", 2000000)==>vp[size->2000000]gremlin> v2.property("size", 3000000000);Value [3000000000] is not an instance of the expected data type for property key [size] and cannot be converted. Expected: class java.lang.Integer, found: class java.lang.LongType ':help' or ':h' for help.Display stack trace? [yN]n
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