Find duplicate classes on the classpath
org.openrewrite.java.dependencies.search.FindDuplicateClasses
Detects classes that appear in multiple dependencies on the classpath. This is similar to what the Maven duplicate-finder-maven-plugin does. Duplicate classes can cause runtime issues when different versions of the same class are loaded.
Recipe source
GitHub: FindDuplicateClasses.java, Issue Tracker, Maven Central
This recipe is available under the Apache License Version 2.0.
Usage
This recipe has no required configuration options. Users of Moderne can run it via the Moderne CLI.
- Moderne CLI
You will need to have configured the Moderne CLI on your machine before you can run the following command.
mod run . --recipe FindDuplicateClasses
If the recipe is not available locally, then you can install it using:
mod config recipes jar install org.openrewrite.recipe:rewrite-java-dependencies:1.51.0
See how this recipe works across multiple open-source repositories
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Data Tables
- DuplicateClassesReport
- SourcesFileResults
- SearchResults
- SourcesFileErrors
- RecipeRunStats
Duplicate classes report
org.openrewrite.java.dependencies.table.DuplicateClassesReport
Lists classes that appear in multiple dependencies on the classpath
| Column Name | Description |
|---|---|
| Project name | The project containing the duplicate. |
| Source set | The source set containing the duplicate (e.g., main, test). |
| Type name | The fully qualified name of the duplicate class. |
| Dependency 1 | The first dependency containing the class (group:artifact:version). |
| Dependency 2 | The second dependency containing the class (group:artifact:version). |
| Additional dependencies | Any additional dependencies beyond the first two that also contain this class, comma-separated. |
Source files that had results
org.openrewrite.table.SourcesFileResults
Source files that were modified by the recipe run.
| Column Name | Description |
|---|---|
| Source path before the run | The source path of the file before the run. null when a source file was created during the run. |
| Source path after the run | A 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 changes | In 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 changes | The specific recipe that made a change. |
| Estimated time saving | An estimated effort that a developer to fix manually instead of using this recipe, in unit of seconds. |
| Cycle | The recipe cycle in which the change was made. |
Source files that had search results
org.openrewrite.table.SearchResults
Search results that were found during the recipe run.
| Column Name | Description |
|---|---|
| Source path of search result before the run | The source path of the file with the search result markers present. |
| Source path of search result after run the run | A recipe may modify the source path. This is the path after the run. null when a source file was deleted during the run. |
| Result | The trimmed printed tree of the LST element that the marker is attached to. |
| Description | The content of the description of the marker. |
| Recipe that added the search marker | The specific recipe that added the Search marker. |
Source files that errored on a recipe
org.openrewrite.table.SourcesFileErrors
The details of all errors produced by a recipe run.
| Column Name | Description |
|---|---|
| Source path | The file that failed to parse. |
| Recipe that made changes | The specific recipe that made a change. |
| Stack trace | The stack trace of the failure. |
Recipe performance
org.openrewrite.table.RecipeRunStats
Statistics used in analyzing the performance of recipes.
| Column Name | Description |
|---|---|
| The recipe | The recipe whose stats are being measured both individually and cumulatively. |
| Source file count | The number of source files the recipe ran over. |
| Source file changed count | The number of source files which were changed in the recipe run. Includes files created, deleted, and edited. |
| Cumulative scanning time (ns) | The total time spent across the scanning phase of this recipe. |
| Max scanning time (ns) | The max time scanning any one source file. |
| Cumulative edit time (ns) | The total time spent across the editing phase of this recipe. |
| Max edit time (ns) | The max time editing any one source file. |