Problem with nested collections

[dominik-kopczynski]

OrientDB Version: 2.2.18

Java Version: 1.8

OS: ubuntu 16.04

Hi folks,

Thank you for providing this very lovely database. Currently, I am restructuring our program, that it utilizes orientDB but I stuck in a problem I cannot solve. Within my class (say MyClass1) I have a nested collection, for instance: HashMap<String, ArrayList>
When storing in the database, I get the following error:
Exception in thread "main" java.lang.NullPointerException
at com.orientechnologies.orient.core.record.ORecordInternal.track(ORecordInternal.java:127)
at com.orientechnologies.orient.core.db.record.OTrackedList.addOwnerToEmbeddedDoc(OTrackedList.java:125)
at com.orientechnologies.orient.core.db.record.OTrackedList.add(OTrackedList.java:67)
at com.orientechnologies.orient.core.db.record.ORecordLazyList.add(ORecordLazyList.java:178)
at com.orientechnologies.orient.core.db.record.ORecordLazyList.add(ORecordLazyList.java:48)
at com.orientechnologies.orient.object.enhancement.OObjectEntitySerializer.multiValueToStream(OObjectEntitySerializer.java:1378)
at com.orientechnologies.orient.object.enhancement.OObjectEntitySerializer.typeToStream(OObjectEntitySerializer.java:796)
at com.orientechnologies.orient.object.enhancement.OObjectEntitySerializer.multiValueToStream(OObjectEntitySerializer.java:1391)
at com.orientechnologies.orient.object.enhancement.OObjectEntitySerializer.typeToStream(OObjectEntitySerializer.java:799)
at com.orientechnologies.orient.object.enhancement.OObjectEntitySerializer.toStream(OObjectEntitySerializer.java:1211)
at com.orientechnologies.orient.object.enhancement.OObjectEntitySerializer.serializeObject(OObjectEntitySerializer.java:145)
at com.orientechnologies.orient.object.db.OObjectDatabaseTx.save(OObjectDatabaseTx.java:453)
at com.orientechnologies.orient.object.db.OObjectDatabaseTx.save(OObjectDatabaseTx.java:398)

I checked, both classes MyClass1 and MyClass2 have correct getters and setters for all attributes. When I use one flat collection, everything works fine. Could you give me a suggestion how to solve this error? Do you need more information? Thank you very much.

Cheers,
Dominik

[tglman]

hi @dominik-kopczynski,

Do you have a example test case for reproduce the issue ? Looking to the trace I think I found the reason of the problem, but I would like to have a test to prove the fix.

Regards.

[dominik-kopczynski]

Hi, Thank you for the massage. I attached two classes. Please register both classes, create an instance of CoolContainer and try to store it. Thank you very much. Cheers, Dominik

…

On 17.07.2017 13:56, tglman wrote: hi @dominik-kopczynski <https://github.com/dominik-kopczynski>, Do you have a example test case for reproduce the issue ? Looking to the trace I think I found the reason of the problem, but I would like to have a test to prove the fix. Regards. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#7548 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/APXlMU0g78MIrLd80QgQwpXV6C8cd5Qkks5sO0wBgaJpZM4OX8PE>.

[tglman]

Hi @dominik-kopczynski,

I think github removed the attachment in your email, could you put them on a gist ?

Thank you

[dominik-kopczynski]

Here it is: https://gist.github.com/dominik-kopczynski/daf5b3acd5474db69c67485faff7fe00 Cheers

…

On 17.07.2017 15:01, tglman wrote: Hi @dominik-kopczynski <https://github.com/dominik-kopczynski>, I think github removed the attachment in your email, could you put them on a gist ? Thank you — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#7548 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/APXlMWR7h7-DrrEyno1K60JmE-r3gYFMks5sO1sNgaJpZM4OX8PE>.

[tglman]

hi @dominik-kopczynski,

Thanks for the case, I could reproduce the issue and verify the fix, pushed everything right now, I'll close this issue, the fix will be released with 2.2.24 and with 3.0.0.

Regards