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Change static field access to static method access

org.openrewrite.java.ChangeStaticFieldToMethod

Migrate accesses to a static field to invocations of a static method.

Recipe source​

GitHub, Issue Tracker, Maven Central

This recipe is available under the Apache License Version 2.0.

Options​

TypeNameDescriptionExample
StringoldClassNameThe fully qualified name of the class containing the field to replace.java.util.Collections
StringoldFieldNameThe simple name of the static field to replace.EMPTY_LIST
StringnewClassNameOptional. The fully qualified name of the class containing the method to use. Leave empty to keep the same class.java.util.List
StringnewTargetOptional. An optional method target that can be used to specify a static field within the new class.OK_RESPONSE
StringnewMethodNameThe simple name of the method to use. The method must be static and have no arguments.of

Usage​

This recipe has required configuration parameters. Recipes with required configuration parameters cannot be activated directly (unless you are running them via the Moderne CLI). To activate this recipe you must create a new recipe which fills in the required parameters. In your rewrite.yml create a new recipe with a unique name. For example: com.yourorg.ChangeStaticFieldToMethodExample. Here's how you can define and customize such a recipe within your rewrite.yml:

rewrite.yml
---
type: specs.openrewrite.org/v1beta/recipe
name: com.yourorg.ChangeStaticFieldToMethodExample
displayName: Change static field access to static method access example
recipeList:
  - org.openrewrite.java.ChangeStaticFieldToMethod:
      oldClassName: java.util.Collections
      oldFieldName: EMPTY_LIST
      newClassName: java.util.List
      newTarget: OK_RESPONSE
      newMethodName: of

Now that com.yourorg.ChangeStaticFieldToMethodExample has been defined, activate it in your build file:

  1. Add the following to your build.gradle file:
build.gradle
plugins {
    id("org.openrewrite.rewrite") version("7.7.0")
}

rewrite {
    activeRecipe("com.yourorg.ChangeStaticFieldToMethodExample")
    setExportDatatables(true)
}

repositories {
    mavenCentral()
}
  1. Run gradle rewriteRun to run the recipe.

See how this recipe works across multiple open-source repositories​

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Data Tables​

Source files that had results​

org.openrewrite.table.SourcesFileResults

Source files that were modified by the recipe run.

Column NameDescription
Source path before the runThe source path of the file before the run. null when a source file was created during the run.
Source path after the runA recipe may modify the source path. This is the path after the run. null when a source file was deleted during the run.
Parent of the recipe that made changesIn a hierarchical recipe, the parent of the recipe that made a change. Empty if this is the root of a hierarchy or if the recipe is not hierarchical at all.
Recipe that made changesThe specific recipe that made a change.
Estimated time savingAn estimated effort that a developer to fix manually instead of using this recipe, in unit of seconds.
CycleThe recipe cycle in which the change was made.

Contributors​

Christian Semrau, Jonathan Schnéider, Tyler Van Gorder, Udayani Vaka, Sam Snyder, Tim te Beek, Knut Wannheden, Thomas Zub, Aaron Gershman