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Simplify null checks on Optional @ConfigurationProperties parameters

Recipe IDio.moderne.java.spring.boot4.SimplifyOptionalConfigurationPropertiesNullChecks
Artifactio.moderne.recipe:rewrite-spring

Spring Boot 4.1 changes constructor-bound @ConfigurationProperties so that Optional<T> parameters bind to Optional.empty() rather than null. This recipe replaces == null / != null checks against such parameters (or same-named fields in the binding constructor's class) with the constant they will always evaluate to, then runs SimplifyConstantIfBranchExecution to remove the dead branches.

Single recipeProprietary

Usage

This recipe has no required configuration options. You’ll need the Moderne CLI configured before running the command below.

mod run . --recipe io.moderne.java.spring.boot4.SimplifyOptionalConfigurationPropertiesNullChecks

If the recipe isn’t available locally, install it with:

mod config recipes jar install io.moderne.recipe:rewrite-spring:0.39.0

Data tables

Structured output this recipe can produce.

  • Source files that had resultsSource files that were modified by the recipe run.org.openrewrite.table.SourcesFileResults
  • Source files that had search resultsSearch results that were found during the recipe run.org.openrewrite.table.SearchResults
  • Source files that errored on a recipeThe details of all errors produced by a recipe run.org.openrewrite.table.SourcesFileErrors
  • Recipe performanceStatistics used in analyzing the performance of recipes.org.openrewrite.table.RecipeRunStats