[Iryna-Kahamlyk]

JIRA: https://issues.apache.org/jira/browse/TINKERPOP-3183

Upgrades Groovy from 4.0.32 to 6.0.0. The Gremlin Console now runs on the Groovy 6 shell (groovysh 6, built on
JLine 4) through its embedding API, replacing groovysh 4 and the unmaintained JLine 2.

gremlin-groovy

• Kept def variables visible across scripts in interpreter mode with Groovy 6's AST changes.
• Fixed g.inject(null) choosing Groovy 5's new inject() helpers, and a recursion in the sugar plugin's property lookup.
• Kept the last of two imports with the same simple name, which Groovy 5+ otherwise rejects (keeps a plugin able to override __).
• Allowed ArrayGroovyMethods in the sandbox allowlists, where Groovy 5 moved the array extension methods.

gremlin-console

• Ported the Gremlin commands (:plugin, :set, :install, :uninstall, :cls) to JLine commands. They keep their
  names, messages and Tab completion; :help /plugin or :plugin --help shows their help.
• Restored line continuation after a trailing . or operator (e.g. g.V().), which groovysh 5/6 no longer support.
• Kept : commands, -i/-e scripts with Gremlin commands, piped input, preferences, plugins, colors and result iteration.
• ctrl+c now stops printing results and running statements and leaves the console usable.

Behavior changes (documented in the upgrade notes)

• An assignment line displays ==>null instead of the value, and an assigned traversal is not iterated.
• Commands, empty lines, comments, imports and method/class definitions display ==>null.
• The symbol shortcuts (:?, :+, :-, :=) and several groovysh 4 commands (:show, :purge, :record, ...) are
  gone; replacements are listed in the upgrade notes.
• fail() shows only FailException: <message> unless the traversal is iterated on the line, e.g. with toList().
• :load reports Loaded: <file>, :save needs a file name, and history from earlier versions is not read.

Testing

• Unit tests (gremlin-groovy)
• Unit tests (gremlin-console)
• Python console tests

[codecov-commenter]

Codecov Report

❌ Patch coverage is 79.83425% with 73 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.93%. Comparing base (a28cd1f) to head (e09d815).
⚠️ Report is 975 commits behind head on master.

Files with missing lines	Patch %	Lines
...rg/apache/tinkerpop/gremlin/console/Console.groovy	69.11%	20 Missing and 22 partials ⚠️
...erpop/gremlin/console/ColonCommandCompleter.groovy	60.86%	8 Missing and 1 partial ⚠️
...jsr223/ast/InterpreterModeASTTransformation.groovy	81.81%	2 Missing and 4 partials ⚠️
...e/tinkerpop/gremlin/console/StatementParser.groovy	91.66%	2 Missing and 2 partials ⚠️
.../apache/tinkerpop/gremlin/console/Colorizer.groovy	66.66%	1 Missing and 2 partials ⚠️
.../gremlin/console/commands/GremlinSetCommand.groovy	93.33%	1 Missing and 1 partial ⚠️
...rpop/gremlin/console/commands/PluginCommand.groovy	81.81%	0 Missing and 2 partials ⚠️
.../apache/tinkerpop/gremlin/console/PluggedIn.groovy	88.88%	1 Missing ⚠️
...nkerpop/gremlin/console/commands/ClsCommand.groovy	66.66%	0 Missing and 1 partial ⚠️
...pop/gremlin/console/commands/GremlinCommand.groovy	92.85%	0 Missing and 1 partial ⚠️
... and 2 more

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #3773      +/-   ##
============================================
+ Coverage     76.35%   77.93%   +1.57%     
- Complexity    13424    15152    +1728     
============================================
  Files          1012     1054      +42     
  Lines         60341    67138    +6797     
  Branches       7075     8027     +952     
============================================
+ Hits          46076    52325    +6249     
- Misses        11548    11573      +25     
- Partials       2717     3240     +523     

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[spmallette]

For committers - Created PR root bead: tp-sg0i

🤖 Agent assisted comment.

[spmallette]

remove "breaking" label. that's not for changelog entries.