This release brings multiple stability fixes and adds initial support for cyclic objects to the schema lib.

Highlights

Fixes

• Fix bug when deleted a reinserted quad in KV backends (@3pCode, https://github.com/cayleygraph/cayley/pull/747).
• Fix Optional iterator not propagating own tags (@phyrwork, https://github.com/cayleygraph/cayley/pull/739).
• Update BoomFilter to avoid panic (@hypirion, https://github.com/cayleygraph/cayley/pull/744).

Library

• schema: Support loading and writing objects containing loops (https://github.com/cayleygraph/cayley/pull/745, https://github.com/cayleygraph/cayley/pull/746).
• schema: Fix recursive ID lookup in anonymous fields (@phyrwork, https://github.com/cayleygraph/cayley/pull/733).
• New Resolver iterator (@phyrwork, https://github.com/cayleygraph/cayley/pull/741).
• Add RefsOf to BatchQuadStore interface (@phyrwork, https://github.com/cayleygraph/cayley/pull/742).

As always, we expect Go users to pin a specific Cayley version tag with dep.

on Github

dennwc: iterator: do not drop an error in resolver
phyrwork: Implement Resolver iterator
HaraldNordgren: Bump Go versions and use '.x' to always get latest minor versions
3pCode: update test to check all return codes, update variable name.
3pCode: Update authors and contributors
3pCode: Fix bug when deleted a reinserted quad.
cristaloleg: Use type-switch
dennwc: schema: support loading objects with loops
dennwc: schema: split schema package into multiple files
phyrwork: Add RefsOf to the BatchQuadStore interface
dennwc: schema: support writing structs that contain loops; fix #731
phyrwork: Fix mock store ValueOf implementation never returning nil
hypirion: Update dependency revision on BoomFilters
phyrwork: Fix Optional iterator not propagating own tags
s_guozhuming: run tests for a specific backend implementations
s_guozhuming: pull image from remote repository if there is not image at local machine
barakmich: change order of dep grabbing
barakmich: Update pouchdb version
barakmich: fix goja dep, update travis
lynic: Correct db name using mongo backend (#723)
phyrwork: Fix Config.idFor() recursive ID lookup in anonymous fields (fixes #732)
tooolbox: Begin the Glossary (#728)
jtorvald: Added unsigned integer types (#725)

Special thanks goes to @phyrwork and @3pCode for their contributions.

• Adds support for EVALSHA, SCRIPT LOAD, SCRIPT EXISTS, SCRIPT KILL & SCRIPT FLUSH
• Changes default log level
• Removes incorrect assert in code

Main page: https://www.nosqlclient.com

Documentation: https://www.nosqlclient.com/docs

Demo: https://www.nosqlclient.com/demo

Version 0.4.0 (July 1, 2019)

Full documentation can be found at https://docs.janusgraph.org/0.4.0

<dependency>
   <groupId>org.janusgraph</groupId>
   <artifactId>janusgraph-core</artifactId>
   <version>0.4.0</version>
</dependency>

For more information on features and bug fixes in 0.4.0, see this GitHub milestone.

Notable new features

• Updates to key dependencies for Apache TinkerPop 3.4, Apache Cassandra 2.2, Apache HBase 2.1, Berkeley DB JE 7.5, Google Cloud Bigtable 1.11
• Support CQL for OLAP which completes our CQL support
• Performance improvements for pre-fetching of properties

Tested Compatibility

• Apache Cassandra 2.2.10, 3.0.14, 3.11.0
• Apache HBase 1.2.6, 1.3.1, 1.4.10, 2.1.5
• Google Bigtable 1.3.0, 1.4.0, 1.5.0, 1.6.0, 1.7.0, 1.8.0, 1.9.0, 1.10.0, 1.11.0
• Oracle BerkeleyJE 7.5.11
• Elasticsearch 5.6.14, 6.0.1, 6.6.0
• Apache Lucene 7.0.0
• Apache Solr 7.0.0
• Apache TinkerPop 3.4.1
• Java 1.8

Contributors

$ git shortlog -sn v0.3.2..v0.4.0
    27  Oleksandr Porunov
    25  Florian Hockmann
     4  Jan Jansen
     3  Chris Hupman
     3  Misha Brukman
     2  Jerry He
     2  Scott McQuillan
     2  chupman
     1  Alexey Ermakov
     1  Marco Scoppetta *
     1  Pavel Ershov
     1  Prithvi Nambiar
     1  Pylyp Mykhailov
     1  Vladimir Bogomolov

* denotes first-time contributor

Fixed

• Fix panic with value variables in queries. Fixes #3470 and #3201. (#3554)
• Remove unused reserved predicates in the schema. Fixes #3535. (#3557)
• Vendor in Badger v1.6.0 for StreamWriter bug fixes. (#3631)
• Vendor in prometheus/client_golang/prometheus v0.9.4. (#3653)

BadgerDB has changed a lot over the latest year so we released a new version with a brand new API.

Read our CHANGELOG for more details on the exact changes, or the announcement post on our blog.

New features

The main new features are:

• The Stream framework has been migrated from Dgraph into BadgerDB.
• A new StreamWriter was added for concurrent writes for sorted streams.
• You can now subscribe to changes in a DB with the DB.Subscribe method.
• A new builder API has been added to reduce the boilerplate related to badger.Options.

Breaking API changes

The following changes might impact your code:

• badger.ManagedDB has been deprecated and merged into badger.DB. You can still use badger.OpenManaged.
• The badger.Options.DoNotCompact option has been removed.
• badger.DefaultOptions and badger.LSMOnlyOptions are now functions that receive a directory path as a parameter.
• All the methods on badger.Txn with name starting in SetWith have been deprecated and replaced with a builder API for type badger.Entry.
• badger.Item.Value now receives a function that returns an error.
• badger.Txn.Commit doesn't receive any params anymore.
• badger.DB.Tables now accepts a boolean to decide whether keys should be counted.

Others

Many new commands and flags have been added to the badger CLI tool, read the CHANGELOG for more details.