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Change Log

All notable changes to this project will be documented in this file. This file should follow the standards specified on [http://keepachangelog.com/] This project adheres to Semantic Versioning.

[9.0.0] - 2018-12-20

Changed

  • Old neo4j-core API has been removed. All interaction should now be through Neo4j::Core::CypherSession. Many paths inside of the gem have been standardized under lib/neo4j/core.
  • Bolt adaptor now supports TLS. TLS / SSL required by default. See documentation for more information.
  • Speed improvements have been made to the Bolt adaptor
  • Bolt adaptor is now using the net_tcp_client gem in an effort to improve robustness
  • Added source line of queries to logs via verbose_query_logs option on all adaptors (fixes #1497)
  • Added Driver adaptor which can leverage a neo4j driver implementation (see preview at https://github.com/neo4jrb/neo4j-ruby-driver )

[8.1.4] - 2018-04-10

Fixed

  • Allow newer version of faraday_middleware gem (thanks @RicardoTrindade / see #315)

[8.1.3] - 2018-04-03

Fixed

  • When getting an error from the server, handle other error cases than just when errors is present in the response (thanks @mrstif / see #313)

[8.1.2] - 2018-03-27

Fixed

[8.1.1] - 2018-03-01

Fixed

  • Require socket in Bolt adaptor so that users don't have to (thanks @bglowacki / see #311)

[8.1.0] - 2018-01-09

Added

  • Added with_distinct method since DISTINCT is not something that applies to one column but to all columns

[8.0.4] - 2017-12-04

Added

  • Add unused argument for HTTP and Embedded adaptors since it was needed for the Bolt adaptor (thanks to @pmaite88 on Gitter)

[8.0.3] - 2017-12-03

Added

  • Add support for #version in Bolt adaptor to fix migration issue (thanks @gottfrois and @JustinAiken / see #303)

[8.0.2] - 2017-11-21

Added

  • Avoid confusing error for HTTP adaptor when uri library isn't loaded (thanks @simpsonjulian / see #305)
  • Output request times for Bolt adaptor

[8.0.1] - 2017-10-22

Added

  • Allow configuration of timeout in Bolt adaptor (thanks @amiel / see #304)

[8.0.0] - 2017-10-15

Changed

  • neo4j-rake_tasks gem is no longer a dependency for neo4j-core. Because many people don't use it, and because many people don't understand it, it will now need to be explicitly required for your project

[7.2.4] - 2017-10-22

Added

  • Allow configuration of timeout in Bolt adaptor

[7.2.3] - 2017-08-22

Fixed

  • Bolt adaptor fix for JRuby. sendmsg was being used, which JRuby doesn't support. Switched to send (thanks @jgaskins / see #300)

[7.2.2] - 2017-07-12

Added

  • start_node_neo_id and end_node_neo_id on Neo4j::Core::Relationship objects (see #298 / thanks @klobuczek)

[7.2.1] - 2017-06-04

Removed

  • Support for jRuby 1.7.x

[7.2.0] - 2017-06-04

Added

  • Support for querying non-integer ranges (see #295 / thanks @jgaskins)

[7.1.2] - 2017-05-02

Fixed

  • Guard against nil value (thanks @WardCunningham / see #293)

[7.1.1] - 2017-05-02

Fixed

  • Use typhoeus in old API as well to fix tests. Also include require statements (see this issue)

[7.1.0] - 2017-04-27

Fixed

  • Changed default adaptor for HTTP adaptor in new API to use typhoeus rather than net-http-persistent because it has shown itself to be more stable under higher load

[7.0.9] - 2017-05-04

Fixed

  • Guard against nil value (thanks @WardCunningham / see #293)

[7.0.8] - 2017-03-16

Changed

  • Changed configurating from faraday_options to faraday_configurator because it works for all configuration

[7.0.7] - 2017-03-15

Added

  • Added back ability to configure internal faraday adaptor (thanks @heavydawson / see #288)

Fixed

  • Fix Ruby 2.4 deprecations re: Integer (see #290 / thanks @jboler)

[7.0.6] - 2017-03-10

Changed

  • Allow for newer versions of Faraday (thanks @thanksafestein / see #287)

[7.0.5] - 2017-02-27

Added

  • Support returning state information from indexes with Bolt (thanks @heavydawson / see #285)

[7.0.4] - 2017-02-08

Fixed

  • Handling messages sent in multiple chunks (thanks @dominikgrygiel / see #284)

[7.0.3] - 2017-01-03

Fixed

  • Return Neo4j::Core::CypherSession::ConnectionFailedError proprety on connection failure with Bolt adaptor

[7.0.2] - 2016-12-28

Fixed

  • Neo4j::Core::CypherSession::ConnectionFailedError raised on requests to Neo4j (not just on connections)

[7.0.1] - 2016-12-23

Added

  • after_commit hooks for transactions (see #277 / thanks @ProGM)

Fixed

[7.0.0] - 2016-12-14

NO CHANGES FROM 7.0.0.rc.2

[7.0.0.rc.2] - 2016-10-06

Fixed

  • Gemspec changes to not allow upgrade to net-http-persistent because of breaking changes in 3.0.0 of that gem (thanks @ProGM)

[7.0.0.rc.1] - 2016-10-04

  • No changes from alpha.8

[7.0.0.alpha.8] - 2016-10-04

Fixed

  • Bug with bolt and large parameters

Changed

  • Error handling and debug messages

[7.0.0.alpha.7] - 2016-09-14

Added

  • call method for Query API for CALL clause introduced in Neo4j 3.0 (see #268)

[7.0.0.alpha.4] - 2016-08-05

Fixed

  • Changes to reduce memory allocations (Thanks ProGM / see #261)

Changed

  • Raise standard Neo4j::Core::CypherSession::ConnectionFailedError error instead of individual errors from adaptors

[7.0.0.alpha.3] - 2016-08-04

Fixed

  • Fixed error when running rake tasks #1251

[7.0.0.alpha.2] - 2016-08-02

Fixed

  • Fixed CypherError handling (thanks ProGM / see #263)

[7.0.0.alpha.1] - 2016-08-02

Added

  • Ability to specify :neo_id/'neo_id' in order clauses to order by ID() (thanks klobuczek / see: #253)
  • Introducing new Cypher session API which is designed to replace the old API (WHOA!)
  • Bolt support via the new session API

Changed

  • Removed httparty dependency which is no longer used (thanks isaacsanders / see #257)
  • If using a threaded server, a new session must be created for each thread (see upgrade guide)

[6.1.6] - 10-14-2016

Fixed

  • Fixed net-http-persistent error wrong number of arguments (given 2, expected 0) (ArgumentError) by requiring ~> 2.9.4 (3.0 introduced a breaking change) (Thanks to tildedash on Slack and @swiftly112)

[6.1.5] - 05-12-2016

Added

  • call method for Query API for CALL clause introduced in Neo4j 3.0 (see #268)

[6.1.4] - 05-12-2016

Added

  • detach_delete method for Query API for DETACH DELETE clause introduced in Neo4j 2.3

[6.1.3] - 04-28-2016

Fixed

  • Added parens to queries to support new required syntax in Neo4j 3.0

[6.1.2] - 2016-02-02

Fixed

  • Returning paths within transactions in Server mode could result in incorrectly wrapped nodes.

Changed

  • The process of parsing responses from the transactional endpoint was simplified and improved. A few methods tied directly to the old implementation and with no reusability were removed. See #249 for changes.

[6.1.0] - 2016-01-01

Fixed

  • There is no longer a need to know about / use the WITHOUT_NEO4J_EMBEDDED environment variable if you want to use server mode in jRuby.
  • Node and relationship objects can now be marshaled

[6.0.4] - 2015-12-22

Fixed

  • Reverted thread fix from 6.0.2 because I didn't quite know what I was doing. Will tackle it again later...

[6.0.3] - 2015-12-21

Fixed

  • Fixed issue where there was a need to require 'neo4j/core/cypher_session' (see #224)

[6.0.2] - 2015-12-18

Fixed

  • Make sessions thread-safe

[6.0.1] - 2015-12-10

Fixed

  • Make sure that limit only gets shifted if it directly follows a with or order

[6.0.0] - 2015-11-24

  • No changes from rc.1

[6.0.0.rc.1] - 2015-11-13

This release contains no changes since the last alpha. Below are all modifications introduced in alpha releases.

Changed

  • Depends on neo4j-rake_tasks ~> 0.3.0.
  • Removed Neo4j::Session#on_session_available, replaced with Neo4j::Session#on_next_session_available. The new method will empty its queue as it is played.
  • Refactored Neo4j::Label#create_index and Neo4j::Label#create_constraint to have compatible signatures. As part of the refactoring of Neo4j::Label#creator_index, the method no longer accepts multiple properties. The method will need to be called once for each, when needed.

Added

  • New session, adaptors, and rewritten Node, Relationship, and Path classes. They are not yet in use but are part of ongoing refactoring and rebuilding.

Fixed

  • Embedded params hash bug, merged from 5.1.x branch and released in 5.1.11.
  • Fixes bug in transaction handling introduced by Neo4j 2.2.6.
  • Merges changes from 5.1.9

[6.0.0.alpha.6] - 2015-10-27

Fixed

  • Embedded params hash bug, merged from 5.1.x branch and released in 5.1.11.

[6.0.0.alpha.5] - 2015-10-23

Fixed

  • Fixes bug in transaction handling introduced by Neo4j 2.2.6.

[6.0.0.alpha.4] - 2015-10-23 (Yanked)

Fixed

  • Merges changes from 5.1.9

[6.0.0.alpha.3] - 2015-10-23 (Yanked)

Fixed

  • Merges changes from 5.1.8

[6.0.0.alpha.2] - 2015-10-17

Changed

  • Depends on neo4j-rake_tasks ~> 0.3.0.

[6.0.0.alpha.1] - 2015-10-12

Changed

  • Removed Neo4j::Session#on_session_available, replaced with Neo4j::Session#on_next_session_available. The new method will empty its queue as it is played.
  • Refactored Neo4j::Label#create_index and Neo4j::Label#create_constraint to have compatible signatures. As part of the refactoring of Neo4j::Label#creator_index, the method no longer accepts multiple properties. The method will need to be called once for each, when needed.

Added

  • New session, adaptors, and rewritten Node, Relationship, and Path classes. They are not yet in use but are part of ongoing refactoring and rebuilding.

[5.1.12] - 2015-11-23

Fixed

  • Fixed case where config[:properties_map] was not a Hash

[5.1.11] - 2015-10-27

Fixed

  • A bug prevented users of Embedded from executing Cypher queries with hashes contained in params.

[5.1.10] - 2015-10-23

Fixed

  • Auto-closing transactions appear to have been introduced in 2.2.6.

[5.1.9] - 2015-10-23

Fixed

  • Improved logic around auto-closing transactions in 2.3.0

[5.1.8] - 2015-10-23 (Yanked)

Fixed

[5.1.7] - 2015-10-14

Added

  • Update neo4j-rake_tasks to add shell task

[5.1.6] - 2015-09-29

Fixed

  • Fix identification of objects returned from Neo4j which look like nodes or relationships

[5.1.5] - 2015-09-27

Changed

  • Update neo4j-rake_tasks version (which now adds the console task)

[5.1.4] - 2015-09-24

Changed

  • Update neo4j-rake_tasks version (which now uses rubyzip gem instead of zip gem)

[5.1.3] - 2015-09-09

Added

  • Query#optional_match_nodes method

[5.1.2] - 2015-08-30

Fixed

  • Using parethesis in where method call shouldn't make double parens and should allow for question mark params to work correctly

[5.1.0.rc.4] - 2015-08-16

Added

  • Query#where_not method to make certain WHERE NOT() statements easier

[5.1.0.rc.2-3] - 2015-08-14

Fixed

  • Bugs from code that was supposed to be on a branch

[5.1.0.rc.1] - 2015-08-14

Added

  • Support pretty cypher queries via Query#print_cypher and Query#to_cypher with pretty: true

[5.0.9] - 2015-08-06

Fixed

  • nil passed to limit results in no LIMIT clause

[5.0.8] - 2015-08-06

Fixed

  • Parameterize regular expressions passed into where clauses

[5.0.7] - 2015-08-03

Fixed

  • require 'uri' in CypherSession for environments where it isn't already required (Issue #221)

[5.0.6] - 2015-07-19

Added

  • Added Query#match_nodes method to easily match variables to nodes/neo_ids

[5.0.5] - 2015-07-14

Fixed

  • Refactoring of instrumentation done in 5.0.2 caused errors in embedded mode

[5.0.4] - 2015-07-14

Changed

  • Added default arguments to neo4j:install rake task

[5.0.3] - 2015-07-01

Fixed

  • Crash in query logging when params were not given.

[5.0.2] - 2015-07-01

Added

  • Support Ruby ranges for querying by changing to Cypher RANGE

Fixed

  • Not all queries were being logged. Moved instrumentation to a lower level

[5.0.1] - 2015-06-23

Fixed

  • Collections returned from Cypher within transactions were being misinterpreted. (#213)

[5.0.0] - 2015-06-18

Fixed

  • Maps returned from Cypher were being treated as node/rel objects in Server mode, Arrays in Embedded. (See #211)

[5.0.0.rc.4] - 2015-06-05

Changed

  • Allow properties_map Hash in HA configuration

[5.0.0.rc.3] - 2015-05-22

Fixed

  • Error when creating a relationship property as a array value of size one, value is set to first item in array instead (see neo4jrb/activegraph#814)

[5.0.0.rc.2] - 2015-05-20

Changed

  • Set Ruby version requirement back to 1.9.3 because of problems with JRuby

[5.0.0.rc.1] - 2015-05-20

Changed

  • Ruby 2.0.0 now required (>= 2.2.1 is recommended)
  • Rake tasks neo4j:(install|start|stop|restart|info|reset_yes_i_am_sure) now output log messages / errors
  • In Query chains, a with followed immediately by a limit and/or an order will have the limit/order clauses applied to it as you would expect
  • Major refactoring using rubocop and speed improvements
  • Queries are retried on failure to deal with RWLock errors

Fixed

  • Bug when starting/stopping embedded sessions repeatedly (like for tests) fixed

Added

  • Query#count method now available
  • Query#clause? method now available to determine if a Query object has a particular clause defined
  • Arrays can now be passed as labels in a Query chain (e.g. .match(n: [:Person, "Animal"]) generates: MATCH (n:Person:Animal) )
  • The Query#set and Query#remove methods now support setting labels (either via Symbols or Arrays)

(There are probably other changes too!)

Changes above this point should conform to [http://keepachangelog.com/]

[v4.1.0]

  • A lot of work working with rubocop to clean up code
  • Many instances of using strings were changed to use symbols
  • Certain query responses are now automatically retried
  • Neo4j::Core::Query changes
  • WHERE clauses from Query chains are now surrounded by parentheses to avoid problems
  • WHERE clauses now support Arrays and nil values for labels
  • WHERE clauses with strings now support a second argument for parameters. Examples:
    • where("foo = {bar}", bar: value))
    • where("foo = ?", value))
  • REMOVE clauses now quote labels and support arrays to specify all labels and properties for one variable
  • RETURN clauses now turn :neo_id into ID(var)
  • New method #clause? lets you determine if a Query object had a clause called upon it in the past
  • New method #count lets you query a count of a variable

[v4.0.0]

This release focuses mostly on performance and security.

  • Fixed a few n+1 queries, force the use of params in more common locations.
  • The CypherTransaction class was heavily refactored to improve the number of database connections required per transaction. This may be considered a breaking API change. Using Neo4j::Transaction.new or Neo4j::Transaction.run as instructed in all docs and examples protects the user from this, so there should be no changes required to old code in most cases.
  • New Rake task: neo4j:start_no_wait -- thanks, @telzul!
  • Massive refactoring and general cleanup by Brian.

[3.1.1]

  • Force more basic, common queries to use params. Early benchmarks suggest big performance improvements.
  • Auth improvements. You can now use a valid Neo4j token with any username to authenticate.

[3.1.0]

  • Swapped out START n=node... for MATCH (n) WHERE ID(n)... for compatibility with Neo4j 2.2.
  • Added a new class, CypherAuthentication, to support Neo4j 2.2's new authentication endpoint.
  • Modified the neo4j:install rake task to disable authentication in Neo4j 2.2.
  • New rake tasks that do exactly what you expect: neo4j:enable_auth, neo4j:disable_auth, neo4j:change_password. All 2.2 only, of course.
  • Travis-CI will run against its MRI specs against Neo4j 2.2 with Ruby 2.1.5.
  • Use params for all create actions to improve performance and security.
  • More tweaks to the string escaping process.
  • Mild refactoring for DRY and performance.

[3.0.8]

  • Small bugfix. Releasing so neo4jrb/neo4j doesn't need to pull from master in its new release.

[3.0.7]

  • Move improved escaping of Cypher params

[3.0.6]

  • When using Neo4j >= 2.1.5, use the metadata keys in Cypher responses to find labels when loading nodes
  • Adds version method to Embedded and Server sessions
  • Improved escaping of Cypher params

[3.0.5]

[3.0.4]

  • Bug fixes to sanitize params and remove blank clauses

[3.0.3]

  • Adds a user agent string to connections to identify the driver with the server

[3.0.2]

  • Improved detection of transaction responses to prevent conflicts with property names

[3.0.1]

  • Improved handling of cypher responses, particularly within transactions

[3.0.0]

No changes from rc 5

== 3.0.0.rc.5

  • Misc fixes
  • Changes to support neo4j gem
  • Using faraday gem with net-http-persistent instead of httparty

== 3.0.0.rc.4

  • Remove dependency on oj gem pending further tests.

== 3.0.0.rc.3

  • Minor gemspec fix

== 3.0.0.rc.2

  • Bugfix in gemspec related to oj and JRuby

== 3.0.0.rc.1

  • Use JSON oj implementation for better performance on neo4j server
  • Some performance improvements on regexps
  • Better support for cypher collect to return array
  • Security: prevent cypher injection
  • Support to install via rake different neo4j server environments
  • Support for query logger
  • Distinct support for query dsl

== 3.0.0.alpha.19

  • Better support for (nested) transaction #94
  • Upgrade to Rspec 3 (#93 @ausmarton)
  • Performance improvements for Neo4j Server, cache props (#86, #90, #91, chris, brian)

== 3.0.0.alpha.18

  • Fix handling of arrays in embedded mode (#89)
  • Performance improvements #86

== 3.0.0.alpha.17

  • Complete rewrite of the query api (Brian Underwood#85)
  • Better performance for Embedded Db - single ExecutionEngine instance in embedded DB (#83 chris)
  • Added better error handling when trying to install Neo4j which does not exist via Rake
  • Added better error handling when user forgot to create a session

== 3.0.0.alpha.16

  • Impl rel_type for Neo4j::Relationship

== 3.0.0.alpha.15

  • Prepared for RSpec 3.x
  • Bumped neo4j-community to 2.1.1

== 3.0.0.alpha.14

  • Improved and moved Neo4j::Label.query to Neo4j::Session.query (thanks Brian Underwood, Mark Bao)
  • Implemented inspect method for some neo4j-server classes to make PRY/IRB happy.

== 3.0.0.alpha.13

  • Fixing the neo4j:install rake task for systems without wget and Windows (#64, @ausmarton)
  • Support for adding labels on existing nodes closes (#63)
  • Session#query returns a hash for all values in a row (#61, @fiddur)

== 3.0.0.alpha.12

  • Fixing find_nodes to not quote numeric values (#48)

== 3.0.0.alpha.11

  • Added Basic Auth (HTTParty config) configuration on session (#58)
  • Drop nil value on create (#56)

== 3.0.0.alpha.10

  • Fix of data url in cypher session (#55)
  • add escape sequence sanitization to cypher translator (#53)
  • Handle update_props with nil value (#46)

== 3.0.0.alpha.9

  • Support for RegExp search (#45)

== 3.0.0.alpha.8

  • Support for Schema Constraints (#44)
  • Fix for Rake Neo4j task (#43)

== 3.0.0.alpha.7

  • Support for named sessions (#40, alex)
  • Added method #update_props for Relationship and Node
  • Added Neo4j::Relationship.create method

== 3.0.0.alpha.6

  • Fixes for wrapper method on nodes needed by the neo4j 3.0 gem

== 3.0.0.alpha.5

  • Better support for wrapping nodes, see Neo4j::Node::Wrapper

== 3.0.0.alpha.4

  • Fix for cypher query, the wrapper hook method must be called to make neo4j gem happy

== 3.0.0.alpha.3

  • Fix for cypher query where the column values was wrong

== 3.0.0.alpha.2

  • Support for Neo4j 2.0.0 and the neo4j-community jar, removed includedd JAR files
  • Simple Event support, notifying listener when database is started/usable
  • Fix requirement for standalone neo4j-core Gem (#34, Kevin Hall)

== 3.0.0.alpha.1

  • First test

== 2.3.0 / 2013-06-18

  • Use 1.9 Neo4j Jars, (#29, Jannis)
  • added ability to pass in params to Neo4j._query method (#28, kmussel)

== 2.2.4 / 2013-05-19

  • Fix for from.rels(...).to_other(to), #27
  • Add support for Relationship#nodes accessor #25, David Butler
  • Fix for NoMethodError on exception message for the []= property method, #24, Aish Aishfenton
  • Made Neo4j.start threadsafe #23, David Butler
  • Better logging for Java Exception #22, David Butler
  • Fixed RSpec problems and make it compatible with future RSpec 3

== 2.2.3 / 2012-12-28

  • Raise an exception if get_or_create is called inside a transaction
  • fix for JRuby 1.8 mode, #20

== 2.2.2 / 2012-12-27

  • Use Neo4j 1.8.1 and avoid JRuby Warnings #19

== 2.2.1 / 2012-12-17

  • Fix for create nodes and relationship using Cypher #17
  • Fix for JRuby 1.7.1 - don't impl eql and == #18

== 2.2.0 / 2012-10-02

  • Use 1.0.0 of neo4j-cypher
  • Fix of Neo4j::Config issue using boolean values, neo4jrb/activegraph#218
  • The []= operator checks that the value is a valid Neo4j value #16

== 2.2.0.rc1 / 2012-09-21

  • Deleted, refactored, improved and moved cypher stuff to neo4j-cypher gem
  • Add neo4j statistics, #15

== 2.1.0 / 2012-08-14

  • Fix for cypher query with node(*) throw error. #13
  • Add methods for Neo4j HA: ha_enabled? ha_master? #12
  • Upgrade to 1.8.M06 - breaking changes, some traversals methods use path objects

== 2.0.1 / 2012-06-07

  • Remove hard coded Gem dependencies to neo4j-advanced and neo4j-enterprise, #11
  • Make it possible to specify protected keys for Neo4j::Node.update, #8, #9
  • Added missing method for start and end_node, #7

== 2.0.0 / 2012-06-05