resultofmethodcallignored.md

Result of method call ignored

org.openrewrite.java.search.ResultOfMethodCallIgnored

Find locations where the result of the method call is being ignored.

Source

GitHub, Issue Tracker, Maven Central

• groupId: org.openrewrite
• artifactId: rewrite-java
• version: 8.1.3

Options

Type	Name	Description
String	methodPattern	A method pattern that is used to find matching method invocations.

Example

Parameters

Parameter	Value
methodPattern	java.io.File mkdir*()

{% tabs %} {% tab title="Test.java" %}

Before

{% code title="Test.java" %}

import java.io.File;
class Test {
    void test() {
        new File("dir").mkdirs();
        new File("dir").mkdir();
        boolean b1 = new File("dir").mkdirs();
        if(!new File("dir").mkdirs()) {
            throw new IllegalStateException("oops");
        }
    }
}

{% endcode %}

After

{% code title="Test.java" %}

import java.io.File;
class Test {
    void test() {
        /*~~>*/new File("dir").mkdirs();
        /*~~>*/new File("dir").mkdir();
        boolean b1 = new File("dir").mkdirs();
        if(!new File("dir").mkdirs()) {
            throw new IllegalStateException("oops");
        }
    }
}

{% endcode %}

{% endtab %} {% tab title="Diff" %} {% code %}

--- Test.java
+++ Test.java
@@ -4,2 +4,2 @@
class Test {
    void test() {
-       new File("dir").mkdirs();
-       new File("dir").mkdir();
+       /*~~>*/new File("dir").mkdirs();
+       /*~~>*/new File("dir").mkdir();
        boolean b1 = new File("dir").mkdirs();

{% endcode %} {% endtab %} {% endtabs %}

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.ResultOfMethodCallIgnoredExample. Here's how you can define and customize such a recipe within your rewrite.yml:

{% code title="rewrite.yml" %}

---
type: specs.openrewrite.org/v1beta/recipe
name: com.yourorg.ResultOfMethodCallIgnoredExample
displayName: Result of method call ignored example
recipeList:
  - org.openrewrite.java.search.ResultOfMethodCallIgnored:
      methodPattern: java.io.File mkdir*()

{% endcode %}

Now that com.yourorg.ResultOfMethodCallIgnoredExample has been defined activate it in your build file: {% tabs %} {% tab title="Gradle" %} {% code title="build.gradle" %}

plugins {
    id("org.openrewrite.rewrite") version("6.1.4")
}

rewrite {
    activeRecipe("com.yourorg.ResultOfMethodCallIgnoredExample")
}

repositories {
    mavenCentral()
}

{% endcode %} {% endtab %} {% tab title="Maven" %} {% code title="pom.xml" %}

<project>
  <build>
    <plugins>
      <plugin>
        <groupId>org.openrewrite.maven</groupId>
        <artifactId>rewrite-maven-plugin</artifactId>
        <version>5.2.4</version>
        <configuration>
          <activeRecipes>
            <recipe>com.yourorg.ResultOfMethodCallIgnoredExample</recipe>
          </activeRecipes>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

{% endcode %} {% endtab %} {% endtabs %}

Contributors

• Jonathan Schneider
• Sam Snyder
• Aaron Gershman

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