8000 feat: Update tool filter type from List to Collection in BaseToolset.isToolSelected by DanyBv · Pull Request #455 · google/adk-java · GitHub
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@DanyBv DanyBv commented Sep 24, 2025

Replace List with Collection in BaseToolset.isToolSelected for broader type compatibility.

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Summary of Changes

Hello @DanyBv, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request refactors the toolFilter parameter type in key methods within BaseToolset and McpToolset to utilize the more general Collection interface instead of the specific List interface. This change significantly enhances the flexibility and compatibility of the tool filtering mechanism, enabling a wider range of collection types to be passed without requiring explicit conversions, thereby improving the API's robustness and usability.

Highlights

  • Type Broadening: The toolFilter parameter in BaseToolset.isToolSelected and the McpToolset constructor has been updated from List to Collection to allow for more flexible input types and broader compatibility.
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Code Review

This pull request correctly updates the toolFilter type from List to Collection in BaseToolset.isToolSelected to allow for broader type compatibility. The change is well-contained and the Javadoc updates are consistent. I've included one suggestion to further simplify the code in BaseToolset.java by using a modern Java feature that is already in use elsewhere in the method.

Comment on lines +47 to 51
if (filter instanceof Collection) {
@SuppressWarnings("unchecked")
List<String> toolNames = (List<String>) filter;
Collection<String> toolNames = (Collection<String>) filter;
return toolNames.contains(tool.name());
}
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medium

You can simplify this block by using pattern matching for instanceof, which you're already using for ToolPredicate earlier in this method. This will make the code more concise and remove the need for @SuppressWarnings("unchecked").

    if (filter instanceof Collection<?> toolNames) {
      return toolNames.contains(tool.name());
    }

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