Links

Simplify a call chain

org.openrewrite.java.SimplifyMethodChain
Simplify a.b().c() to a.d().

Recipe source

  • groupId: org.openrewrite
  • artifactId: rewrite-java
  • version: 8.17.1

Options

Type
Name
Description
Example
List
methodPatternChain
A list of method patterns that are called in sequence
['java.util.Map keySet()', 'java.util.Set contains(..)']
String
newMethodName
The 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
Boolean
matchOverrides
Optional. 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. 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:
Gradle
Maven
Moderne CLI
  1. 1.
    Add the following to your build.gradle file:
build.gradle
plugins {
id("org.openrewrite.rewrite") version("6.8.4")
}
rewrite {
activeRecipe("com.yourorg.SimplifyMethodChainExample")
}
repositories {
mavenCentral()
}
  1. 2.
    Run gradle rewriteRun to run the recipe.
  1. 1.
    Add the following to your pom.xml file:
pom.xml
<project>
<build>
<plugins>
<plugin>
<groupId>org.openrewrite.maven</groupId>
<artifactId>rewrite-maven-plugin</artifactId>
<version>5.23.1</version>
<configuration>
<activeRecipes>
<recipe>com.yourorg.SimplifyMethodChainExample</recipe>
</activeRecipes>
</configuration>
</plugin>
</plugins>
</build>
</project>
  1. 2.
    Run mvn rewrite:run to run the recipe.
You will need to have configured the Moderne CLI on your machine before you can run the following command.
shell
mod run . --recipe SimplifyMethodChainExample

See how this recipe works across multiple open-source repositories

Moderne Link Image
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.

Contributors