102 lines
4.1 KiB
Markdown
102 lines
4.1 KiB
Markdown
---
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title: PMD Release Notes
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permalink: pmd_release_notes.html
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keywords: changelog, release notes
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---
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## {{ site.pmd.date }} - {{ site.pmd.version }}
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The PMD team is pleased to announce PMD {{ site.pmd.version }}.
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This is a {{ site.pmd.release_type }} release.
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{% tocmaker is_release_notes_processor %}
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### New and noteworthy
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#### Scala cross compilation
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Up until now the PMD Scala module has been compiled against scala 2.13 only by default.
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However, this makes it impossible to use pmd as a library in scala projects,
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that use scala 2.12, e.g. in sbt plugins. Therefore PMD now provides cross compiled pmd-scala
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modules for both versions: **scala 2.12** and **scala 2.13**.
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The new modules have new maven artifactIds. The old artifactId `net.sourceforge.pmd:pmd-scala:{{ site.pmd.version }}`
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is still available, but is deprecated from now on. It has been demoted to be just a delegation to the new
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`pmd-scala_2.13` module and will be removed eventually.
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The coordinates for the new modules are:
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```
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<dependency>
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<groupId>net.sourceforge.pmd</groupId>
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<artifactId>pmd-scala_2.12</artifactId>
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<version>{{ site.pmd.version }}</version>
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</dependency>
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<dependency>
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<groupId>net.sourceforge.pmd</groupId>
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<artifactId>pmd-scala_2.13</artifactId>
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<version>{{ site.pmd.version }}</version>
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</dependency>
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```
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The command line version of PMD continues to use **scala 2.13**.
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#### New Rules
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* The new Java Rule {% rule "java/codestyle/UnnecessaryCast" %} (`java-codestyle`)
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finds casts that are unnecessary while accessing collection elements.
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#### Modified rules
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* The Java rule {% rule "java/codestyle/UseDiamondOperator" %} (`java-codestyle`) now by default
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finds unnecessary usages of type parameters, which are nested, involve wildcards and are used
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within a ternary operator. These usages are usually only unnecessary with Java8 and later, when
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the type inference in Java has been improved.
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In order to avoid false positives when checking Java7 only code, the rule has the new property
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`java7Compatibility`, which is disabled by default. Settings this to "true" retains
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the old rule behaviour.
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### Fixed Issues
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* apex-bestpractices
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* [#2554](https://github.com/pmd/pmd/issues/2554): \[apex] Exception applying rule UnusedLocalVariable on trigger
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* c#
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* [#2551](https://github.com/pmd/pmd/issues/2551): \[c#] CPD suppression with comments doesn't work
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* java
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* [#2549](https://github.com/pmd/pmd/issues/2549): \[java] Auxclasspath in PMD CLI does not support relative file path
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* java-codestyle
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* [#2545](https://github.com/pmd/pmd/issues/2545): \[java] UseDiamondOperator false negatives
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* [#2573](https://github.com/pmd/pmd/pull/2573): \[java] DefaultPackage: Allow package default JUnit 5 Test methods
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* java-design
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* [#2563](https://github.com/pmd/pmd/pull/2563): \[java] UselessOverridingMethod false negative with already public methods
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* java-errorprone
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* [#2544](https://github.com/pmd/pmd/issues/2544): \[java] UseProperClassLoader can not detect the case with method call on intermediate variable
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* scala
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* [#2547](https://github.com/pmd/pmd/pull/2547): \[scala] Add cross compilation for scala 2.12 and 2.13
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### API Changes
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* The maven module `net.sourceforge.pmd:pmd-scala` is deprecated. Use `net.sourceforge.pmd:pmd-scala_2.13`
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or `net.sourceforge.pmd:pmd-scala_2.12` instead.
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#### Deprecated APIs
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* {% jdoc apex::lang.apex.ast.ASTAnnotation#suppresses(core::Rule) %}
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### External Contributions
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* [#2349](https://github.com/pmd/pmd/pull/2349): \[java] Optimize UnusedPrivateMethodRule - [shilko2013](https://github.com/shilko2013)
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* [#2547](https://github.com/pmd/pmd/pull/2547): \[scala] Add cross compilation for scala 2.12 and 2.13 - [João Ferreira](https://github.com/jtjeferreira)
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* [#2567](https://github.com/pmd/pmd/pull/2567): \[c#] Fix CPD suppression with comments doesn't work - [Lixon Lookose](https://github.com/LixonLookose)
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* [#2573](https://github.com/pmd/pmd/pull/2573): \[java] DefaultPackage: Allow package default JUnit 5 Test methods - [Craig Andrews](https://github.com/candrews)
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{% endtocmaker %}
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