Denis Sukhoroslov

add functional indices! not too complex to implement.. more complex is their usage at query time!

another exception is: ``` 2018-06-18 13:53:14.418 [hz.hzInstance-24.cached.thread-15] ERROR com.bagri.server.hazelcast.task.schema.SchemaInitiator - initSchema.error; Map xdm-document is still loading data from external store com.hazelcast.spi.exception.RetryableHazelcastException: Map xdm-document is still loading data from external store...

Thanks Dasha, it helps! It looks like we have race conditions here and REST server has been stopped earlier than result was written to the output stream. Adding some delay...

- can also use and turn on/off incoming document validation via XSD

done schema handling via ContentModeler interface. XML/JSON schemas are processed currently.

- the same (?) API could be used for read-only access to document elements (by docId + pathId ?)

done for Map documents. see bdb.document.map.merge property

Custom XSD types and XQuery update are provided in Saxon commercial version.

still happens time to time, looks like VVM issue

Handling of fragmented documents should be refactored, so moving this feature to the next release.