Skip to main content

Change method target to static

org.openrewrite.java.ChangeMethodTargetToStatic

Change method invocations to static method calls.

Recipe source​

GitHub, Issue Tracker, Maven Central

This recipe is available under the Apache License Version 2.0.

Options​

TypeNameDescriptionExample
StringmethodPatternThe original method call may or may not be a static method invocation. A method pattern is used to find matching method invocations. For example, to find all method invocations in the Guava library, use the pattern: com.google.common..*#*(..).

The pattern format is <PACKAGE>#<METHOD_NAME>(<ARGS>).

..* includes all subpackages of com.google.common.
*(..) matches any method name with any number of arguments.

For more specific queries, like Guava's ImmutableMap, use com.google.common.collect.ImmutableMap#*(..) to narrow down the results.		com.google.common.collect.ImmutableSet of(..)
StringfullyQualifiedTargetTypeNameA fully-qualified class name of the type upon which the static method is defined.java.util.Set
StringreturnTypeOptional. Sometimes changing the target type also changes the return type. In the Guava example, changing from ImmutableSet#of(..) to Set#of(..) widens the return type from Guava's ImmutableSet to just java.util.Set.java.util.Set
BooleanmatchOverridesOptional. When enabled, find methods that are overrides of the method pattern.
BooleanmatchUnknownTypesOptional. When enabled, include method invocations which appear to match if full type information is missing. Using matchUnknownTypes can improve recipe resiliency for an AST with missing type information, but also increases the risk of false-positive matches on unrelated method invocations.

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.ChangeMethodTargetToStaticExample. 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.ChangeMethodTargetToStaticExample
displayName: Change method target to static example
recipeList:
  - org.openrewrite.java.ChangeMethodTargetToStatic:
      methodPattern: com.google.common.collect.ImmutableSet of(..)
      fullyQualifiedTargetTypeName: java.util.Set
      returnType: java.util.Set

Now that com.yourorg.ChangeMethodTargetToStaticExample 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("7.6.1")
}

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

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

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

Run this recipe on OSS repos at scale with the Moderne SaaS.

The community edition of the Moderne platform enables you to easily run recipes across thousands of open-source repositories.

Please contact Moderne for more information about safely running the recipes on your own codebase in a private SaaS.

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​

Jonathan Schneider, Nick McKinney, Greg Adams, Tim te Beek, Tyler Van Gorder, traceyyoshima, Sam Snyder, Aaron Gershman