2.0.0-RC1

Release candidate for 2.0.0, published to Maven Central as 2.0.0-RC1.

The major bump is not cosmetic: rule evaluation results changed. Re-run your
rule set against this candidate before adopting 2.0.0.

Breaking

Numeric comparison is value based. Equals compared operands with ==, and
BigDecimal.equals is scale sensitive, so a rule comparing 10 against a
BigDecimal("10.00") field answered false. It compares with compareTo now
and answers true. BigInteger operands convert directly rather than through
toLong, which overflowed above Long.MAX_VALUE, and collections compare
element by element under the same rule. The same rule against the same input can
return a different boolean than it did in 1.6.0.

KotlinContext(Evaluator, Map<String, Any?>) is now
KotlinContext(Evaluator, Any). The Kotlin engine no longer flattens the input
into a map of every path; it resolves the paths a rule names, on demand.

GraalJSEvaluator gained a reuseContextPerThread parameter. Source
compatible, but the primary constructor's JVM signature changed, so recompile
against this version rather than swapping the jar.

ifFail on a group expression keeps its matchers. It rebuilt the expression
from left, operator and right only, so allMatch(...) ifFail FALSE
discarded every matcher and produced an expression that then failed validation.

Fixed

• An operator whose name carries an uppercase letter is reachable again. Names
  were stored lowercased but looked up raw, so a custom myOperator could never
  be resolved.
• A quoted literal spanning lines parses as a literal. The check was a regex
  whose . does not match a newline, so the literal fell through to path
  resolution and threw NoSuchElementException.
• The Unknown operator: message printed null rather than the operator name.

Performance

• Kotlin: operand paths resolve lazily instead of flattening the whole input
  per evaluation, so cost tracks the rule rather than the input size. Operands
  skip the number parses unless they start like a number.
• Rhino: one sealed set of standard objects is shared across evaluations and
  each evaluation runs in a child scope.
• GraalJS: opt in with reuseContextPerThread = true to keep one context per
  thread.

See BENCHMARKS.md
for the measured figures and the trade offs of each.

Checking the candidate

implementation "com.rapatao.ruleset:kotlin-evaluator:2.0.0-RC1"

Worth exercising specifically: any rule comparing numbers where scale differs
(10 against 10.00), anything constructing KotlinContext directly, and any
GraalJSEvaluator built with positional constructor arguments.

Full Changelog: 1.6.0...2.0.0-RC1

1.6.0

What's Changed

• build(deps): bump org.graalvm.polyglot:polyglot from 24.0.2 to 24.1.0 by @dependabot[bot] in #39
• Update Gradle wrapper to version 9.5.1 and enhance workflows by @rapatao in #45

Full Changelog: 1.5.1...1.6.0

1.5.1

What's Changed

• chore: update build package and project dependencies by @rapatao in #38

Full Changelog: 1.5.0...1.5.1

1.5.0

What's Changed

• feat: improved project coverage and minor code fixes by @rapatao in #36
• chore: bump project dependencies by @rapatao in #37
• project is now using Kotlin 2.0.0

Full Changelog: 1.4.2...1.5.0

1.4.2

What's Changed

• feat: add not_starts_with and not_ends_with operators by @rapatao in #35

Full Changelog: 1.4.1...1.4.2

1.4.1

What's Changed

• feat: add not_contains operator by @rapatao in #32
• refactor: use constants instead of plain strings to declare built-in operators by @rapatao in #33
• feat: improving evaluating performance by @rapatao in #34

Full Changelog: 1.4.0...1.4.1

1.4.0

What's Changed

• feat: inject evaluator in the context to allow using it in custom operators by @rapatao in #28
• build(deps): bump org.graalvm.polyglot:polyglot from 24.0.1 to 24.0.2 by @dependabot in #30
• refactor: move each operator to its own file and fix readme typo by @rapatao in #31

New Contributors

• @dependabot made their first contribution in #30

Full Changelog: 1.3.0...1.4.0

1.3.0

What's Changed

• feat: enable library user to extend Engines to have customizable operators by @rapatao in #27

Full Changelog: 1.2.1...1.3.0

1.2.1

What's Changed

• fix: Kotlin evaluator is not supporting nullable values by @rapatao in #26

Full Changelog: 1.2.0...1.2.1

1.2.0

What's Changed

• feat: remove EvalEngine class replacing its usage by creating Evaluator for each engine by @rapatao in #24
• feat: on failure was not being used in group operations by @rapatao in #25

Full Changelog: 1.1.0...1.2.0