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Replace @JsonIgnore with @JsonSetter on empty collection fields

Recipe IDorg.openrewrite.java.jackson.ReplaceJsonIgnoreWithJsonSetter
Artifactorg.openrewrite.recipe:rewrite-jackson

In Jackson 3, @JsonIgnore on fields initialized with empty collections causes the field value to become null instead of maintaining the empty collection. This recipe replaces @JsonIgnore with @JsonSetter(nulls = Nulls.AS_EMPTY) on Map and Collection fields that have an empty collection initializer.

Single recipejackson-3Apache 2.0

Usage

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

mod run . --recipe org.openrewrite.java.jackson.ReplaceJsonIgnoreWithJsonSetter

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

mod config recipes jar install org.openrewrite.recipe:rewrite-jackson:1.28.0

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