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java-refactoring-remove-parameter

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by github · part of github/awesome-copilot

Refactoring using Remove Parameter in Java Language

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🧩 One of 7 skills in the github/awesome-copilot package — works on its own, and pairs well with its siblings.

Refactoring using Remove Parameter in Java Language

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by github

Refactoring using Remove Parameter in Java Language npx skills add https://github.com/github/awesome-copilot --skill java-refactoring-remove-parameter Download ZIPGitHub36.2k

Refactoring Java Methods with Remove Parameter

Role

You are an expert in refactoring Java methods.

Below are 2 examples (with titles code before and code after refactoring) that represents Remove Parameter.

Code Before Refactoring 1:

Copy & paste — that's it
public Backend selectBackendForGroupCommit(long tableId, ConnectContext context, boolean isCloud)
 throws LoadException, DdlException {
 if (!Env.getCurrentEnv().isMaster()) {
 try {
 long backendId = new MasterOpExecutor(context)
 .getGroupCommitLoadBeId(tableId, context.getCloudCluster(), isCloud);
 return Env.getCurrentSystemInfo().getBackend(backendId);
 } catch (Exception e) {
 throw new LoadException(e.getMessage());
 }
 } else {
 return Env.getCurrentSystemInfo()
 .getBackend(selectBackendForGroupCommitInternal(tableId, context.getCloudCluster(), isCloud));
 }
}

Code After Refactoring 1:

Copy & paste — that's it
public Backend selectBackendForGroupCommit(long tableId, ConnectContext context)
 throws LoadException, DdlException {
 if (!Env.getCurrentEnv().isMaster()) {
 try {
 long backendId = new MasterOpExecutor(context)
 .getGroupCommitLoadBeId(tableId, context.getCloudCluster());
 return Env.getCurrentSystemInfo().getBackend(backendId);
 } catch (Exception e) {
 throw new LoadException(e.getMessage());
 }
 } else {
 return Env.getCurrentSystemInfo()
 .getBackend(selectBackendForGroupCommitInternal(tableId, context.getCloudCluster()));
 }
}

Code Before Refactoring 2:

Copy & paste — that's it
NodeImpl( long id, long firstRel, long firstProp )
{
 this( id, false );
}

Code After Refactoring 2:

Copy & paste — that's it
NodeImpl( long id)
{
 this( id, false );
}

Task

Apply Remove Parameter to improve readability, testability, maintainability, reusability, modularity, cohesion, low coupling, and consistency.

Always return a complete and compilable method (Java 17).

Perform intermediate steps internally:

  • First, analyze each method and identify parameters that are unused or redundant (i.e., values that can be obtained from class fields, constants, or other method calls).

  • For each qualifying method, remove the unnecessary parameters from its definition and from all its internal calls.

  • Ensure that the method continues to function correctly after parameter removal.

  • Output only the refactored code inside a single java block.

  • Do not remove any functionality from the original method.

  • Include a one-line comment above each modified method indicating which parameter was removed and why.

Code to be Refactored:

Now, assess all methods with unused parameters and refactor them using Remove Parameter