PMD v6.26.0 release notes (2020-07-25)

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PMD v6.26.0 Release Notes

Release Date: 2020-07-25 // almost 4 years ago

25-July-2020 - 6.26.0

The PMD team is pleased to announce PMD 6.26.0.

🚀 This is a minor release.

Table Of Contents
- New and noteworthy
  - New Rules
  - Modified rules
- 🛠 Fixed Issues
- API Changes
  - Deprecated API
  - For removal
- External Contributions
- Stats
🆕 New and noteworthy

🆕 New Rules
- The new Java rule UnusedAssignment (java-bestpractices) finds assignments
  to variables, that are never used and are useless. The new rule is supposed to entirely replace
  DataflowAnomalyAnalysis.
Modified rules
- The Java rule ArrayIsStoredDirectly (java-bestpractices) now ignores
  ⏪ by default private methods and constructors. You can restore the old behavior by setting the new property
  allowPrivate to "false".
🛠 Fixed Issues
- apex
  - #2610: [apex] Support top-level enums in rules
- apex-bestpractices
  - #2626: [apex] UnusedLocalVariable - false positive on case insensitivity allowed in Apex
- 🐎 apex-performance
  - #2598: [apex] AvoidSoqlInLoops false positive for SOQL with in For-Loop
- 🔒 apex-security
  - #2620: [visualforce] False positive on VfUnescapeEl with new Message Channel feature
- core
  - #710: [core] Review used dependencies
  - #2594: [core] Update exec-maven-plugin and align it in all project
  - #2615: [core] PMD/CPD produces invalid XML (insufficient escaping/wrong encoding)
- java-bestpractices
  - #2543: [java] UseCollectionIsEmpty can not detect the case this.foo.size()
  - #2569: [java] LiteralsFirstInComparisons: False negative for methods returning Strings
  - #2622: [java] ArrayIsStoredDirectly false positive with private constructor/methods
- 💅 java-codestyle
  - #2546: [java] DuplicateImports reported for the same import... and import static...
- java-design
  - #2174: [java] LawOfDemeter: False positive with 'this' pointer
  - #2181: [java] LawOfDemeter: False positive with indexed array access
  - #2189: [java] LawOfDemeter: False positive when casting to derived class
  - #2580: [java] AvoidThrowingNullPointerException marks all NullPointerException objects as wrong, whether or not thrown
  - #2625: [java] NPathComplexity can't handle switch expressions
- java-errorprone
  - #2578: [java] AvoidCallingFinalize detects some false positives
  - #2634: [java] NullPointerException in rule ProperCloneImplementation
- 🐎 java-performance
  - #1736: [java] UseStringBufferForStringAppends: False positive if only one concatenation
  - #2207: [java] AvoidInstantiatingObjectsInLoops: False positive - should not flag objects when assigned to lists/arrays
API Changes

🗄 Deprecated API

For removal
- 📄 RuleChainVisitor and all implementations in language modules
- 📄 AbstractRuleChainVisitor
- 📄 Language#getRuleChainVisitorClass
- 📄 BaseLanguageModule#<init>
- 📄 ImportWrapper
External Contributions
- #2558: [java] Fix issue #1736 and issue #2207 - Young Chan
- #2560: [java] Fix false positives of LawOfDemeter: this and cast expressions - xioayuge
- ⚡️ #2590: Update libraries snyk is referring to as unsafe - Artem Krosheninnikov
- ⚡️ #2597: [dependencies] Fix issue #2594, update exec-maven-plugin everywhere - Artem Krosheninnikov
- #2621: [visualforce] add new safe resource for VfUnescapeEl - Peter Chittum
- 👯 #2640: [java] NullPointerException in rule ProperCloneImplementation - Mykhailo Palahuta
- #2641: [java] AvoidThrowingNullPointerException marks all NullPointerException… - Mykhailo Palahuta
- #2643: [java] AvoidCallingFinalize detects some false positives (2578) - Mykhailo Palahuta
- #2651: [java] False negative: LiteralsFirstInComparisons for methods... (2569) - Mykhailo Palahuta
- #2652: [java] UseCollectionIsEmpty can not detect the case this.foo.size() - Mykhailo Palahuta
Stats
- 156 commits
- 43 closed tickets & PRs
- 🚀 Days since last release: 28