PMD Release Notes

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??-December-2019 - 6.21.0

The PMD team is pleased to announce PMD 6.21.0.

This is a minor release.

New and noteworthy

Modelica support

Thanks to Anatoly Trosinenko PMD supports now a new language: Modelica is a language to model complex physical systems. Both PMD and CPD are supported and there are already 3 rules available. The PMD Designer supports syntax highlighting for Modelica.

While the language implementation is quite complete, Modelica support is considered experimental for now. This is to allow us to change the rule API (e.g. the AST classes) slightly and improve the implementation based on your feedback.

Fixed Issues

• java-codestyle
  • #2167: [java] UnnecessaryLocalBeforeReturn false positive with variable captured by method reference
• java-bestpractices
  • #2149: [java] JUnitAssertionsShouldIncludeMessage - False positive with assertEquals and JUnit5
• java-performance
  • #2141: [java] StringInstatiation: False negative with String-array access

API Changes

Deprecated APIs

Internal API

Those APIs are not intended to be used by clients, and will be hidden or removed with PMD 7.0.0. You can identify them with the @InternalApi annotation. You’ll also get a deprecation warning.

• JavaLanguageHandler
• JavaLanguageParser
• JavaDataFlowHandler
• Implementations of RuleViolationFactory in each language module, eg JavaRuleViolationFactory. See javadoc of RuleViolationFactory.
• Implementations of RuleViolation in each language module, eg JavaRuleViolation. See javadoc of RuleViolation.

For removal

• AbstractJavaParser
• AbstractJavaHandler
• ASTAnyTypeDeclaration.TypeKind
• ASTAnyTypeDeclaration#getKind
• JavaQualifiedName
• ASTCompilationUnit#declarationsAreInDefaultPackage
• JavaQualifiableNode
  • ASTAnyTypeDeclaration#getQualifiedName
  • ASTMethodOrConstructorDeclaration#getQualifiedName
  • ASTLambdaExpression#getQualifiedName
• net.sourceforge.pmd.lang.java.qname and its contents
• MethodLikeNode
  • Its methods will also be removed from its implementations, ASTMethodOrConstructorDeclaration, ASTLambdaExpression.
• ASTAnyTypeDeclaration#getImage will be removed. Please use getSimpleName() instead. This affects ASTAnnotationTypeDeclaration#getImage, ASTClassOrInterfaceDeclaration#getImage, and ASTEnumDeclaration#getImage.

External Contributions

• #2041: [modelica] Initial implementation for PMD - Anatoly Trosinenko