Metacat

merge from 2.6 branch: use group subject (not name) when translating Session.subjectInfo into group list for Metacat's DocumentImpl. https://github.nceas.ucsb.edu/KNB/arctic-data/issues/163

Add more information on the error message if the client's certificate is not trusted.

Merge the changes from the 2.6 branch into the trunk, fixing filename construction.

refs https://github.nceas.ucsb.edu/KNB/arctic-data/issues/151

merge from 2.6 branch: add support for EML 2.1.1 in OAI-PMH provider. https://projects.ecoinformatics.org/ecoinfo/issues/7009

Fixed a bug to use an identifier object to get a value in a vector.

Check the chain end if obsoleted by another object.
See ticket https://redmine.dataone.org/issues/7624

Use sql command to get some information rather than hazelcast.

Use a hashmap to replace a sql query to improve performance in the getHeadPID method.

In the getHeadPID method, we got the field obsoletedBy from the systemmetadata table rather than the hazelcast service.

Reformat the create and update method.