Version 0.16.0

New features:

• VALUE_NODEs as low level blobs. Attribute entities now reference values and
  reuse stored blobs.

• Val(...) syntax in a GraphDelta will create a value node.

• Can load and save graphs locally.

Fixes:

• Graphs record which ET/RT/ENs they are using again.

• Issues with value nodes in graph caches.

Improvements:

• SimpleGQL:

  • Custom routes handled by hooks can be given as Zef.Route lines in the
    graphql file.

• Refactor GraphQL module from gql to graphql.

• Improvements to many FX.

• Improvements to many ZefOps.

• More flexible graph update process, allowing concurrent processing.

• Compact view for graphviz as default.

• Many improvements to FlatGraphs

Breaking changes:

• We have removed Windows support for this release. We are aiming to reintroduce
  it for the next release.

Small fix in imports due to renamings of VRT

Fixes:

is_a was using old imports that are no longer exposed from C++.

Added the following to zef.core.internals:

• is_vrt_a_enum,
• is_vrt_a_quantity_float
• is_vrt_a_quantity_int

Version 0.15.8

New features:

• Rich output in zef.ui, via show, to_table and to_card.
• splice, alias zefops.
• Filegraphs and credentials are stored together in directory for ZefHub URL.
  This may require a new login with your credentials.
• Symbolic expressions.

Breaking changes:

• ZEFHUB_AUTH_KEY is repurposed for API keys for service jobs. API keys can be
  created for your account at console.zefhub.io.

Fixes:

• SimpleGQL graphs are kept alive by default.
• Fixes in ordering of graph delta commands.
• Zefops ZefGenerators internally now for reliable iteration.

Improvements:

• FlatGraphs:
  • FlatGraphs can absorbed other FlatGraphs from FlatRefs
• SimpleGQL:
  • Faster queries/updates with explicit IDs.
  • Queries work in consistent graph slice.
  • debug-level for extra info
• Core:
  • GraphSlices now hold a reference to their corresponding Graph.

Version 0.15.7

Breaking changes:

• SimpleGQL: no longer takes the schema_file and graph as regular arguments, but
  as --schema-file and --data-tag instead.
• Rename ZEFDB_CONFIG_PATH to ZEFDB_SESSION_PATH
• schema zefop renamed to blueprint

New features:

• SimpleGQL:

  • all main module arguments can be passed as environment variables,
    e.g. instead of --schema-file you can use SIMPLEGQL_SCHEMA_FILE.
    Commandline args take priority.
  • --init-hook option to run a hook on every startup
  • @dynamic(hook: "...") option for field resolvers

• Tokens are cached in the session directory

• Dictionary syntax for graph wishes: {ET.Something: {RT.A: 3, RT.B: 4}}

• set_field operation for atomically updating "fields"

Fixes:

• login auth flow was broken for the new default of statically built libzef.

Version 0.15.6

New Features

• Zef repo has been open-sourced under the Apache License 2.0.

• New traversal syntax...

  • Instead of z >> RT.Something use z | Out[RT.Something]
  • Instead of z >> L[RT.Something] use z | Outs[RT.Something]
  • Instead of z < RT.Something use z | in_rel[RT.Something]

• The traversal operators now can take another argument to filter on the target/source, e.g. z | Outs[RT.Something][ET.SpecificEntity].

• PyPI packages. Zef can now be installed via pip install zef.

• General movement from predicates to types:

  • is_a compares its argument to a type.
  • Use Is[<predicate>] to create a type which is the set of all items where the predicate is satisfied.

• pattern matching with the match operator. match_apply has been retired, if a constant value is to be returned this is easily done with a lambda.

• the Pattern function: returns a ValueType and allows very concise pattern matching on dictionaries and lists.

• Preliminary Windows support.

New ZefOps

• schema to show delegate entities/relations. Note: the output of this is not stable and likely to change.

• events on a ZefRef replaces instantiation_tx, termination_tx, etc...

• events on a TX replaces instantiated, terminated, etc...

• absorbed and without_absorbed manipulate parameters absorbed into ZefOps.

Bug Fixes

• Many fixes!

Deprecations

• New traversal syntax with ZefOps.

  • The operators >>, <<, >, < are deprecated along with the L[...] and O[...] syntax.
  • Instead use the operators like the following examples for single values:
    • z | Out[...] returns a ZefRef to the target of the outgoing relation
    • z | In[...]
    • z | out_rel[...] the ZefRef to the relation itself is returned
    • z | in_rel[...]
  • Multiple relations are obtained with a plural form of these operators:
    • z | Outs[...] for multary relations (a list of ZefRef is returned)
    • z | Ins[...]
    • z | out_rels[...]
    • z | in_rels[...]

• match_apply is retired for match.