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Simplify a call chain

org.openrewrite.java.SimplifyMethodChain

Simplify a.b().c() to a.d().

Recipe source​

GitHub, Issue Tracker, Maven Central

This recipe is available under the Apache License Version 2.0.

Options​

TypeNameDescriptionExample
ListmethodPatternChainA list of method patterns that are called in sequence['java.util.Map keySet()', 'java.util.Set contains(..)']
StringnewMethodNameThe method name that will replace the existing name. The new method name target is assumed to have the same arguments as the last method in the chain.containsKey
BooleanmatchOverridesOptional. When enabled, find methods that are overrides of the method pattern.false

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.SimplifyMethodChainExample. 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.SimplifyMethodChainExample
displayName: Simplify a call chain example
recipeList:
  - org.openrewrite.java.SimplifyMethodChain:
      methodPatternChain: ['java.util.Map keySet()', 'java.util.Set contains(..)']
      newMethodName: containsKey
      matchOverrides: false

Now that com.yourorg.SimplifyMethodChainExample 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("7.5.0")
}

rewrite {
    activeRecipe("com.yourorg.SimplifyMethodChainExample")
    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​

Jonathan Schneider, Tim te Beek, traceyyoshima, Joan Viladrosa, Jonathan Leitschuh