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Development: Improve code quality of competency and learning path repositories #8875

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merged 2 commits into from
Jun 26, 2024

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MaximilianAnzinger
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@MaximilianAnzinger MaximilianAnzinger commented Jun 26, 2024

Checklist

General

Server

  • Important: I implemented the changes with a very good performance and prevented too many (unnecessary) database calls.
  • I strictly followed the server coding and design guidelines.

Description

Utilizes functions from ArtemisJpaRepository and removes unused code

Review Progress

Performance Review

  • I (as a reviewer) confirm that the server changes (in particular related to database calls) are implemented with a very good performance

Code Review

  • Code Review 1
  • Code Review 2

Summary by CodeRabbit

  • Refactor
    • Streamlined repository interfaces for Competency and Learning Path entities by consolidating error handling into a single method, enhancing code maintainability and readability.

@MaximilianAnzinger MaximilianAnzinger requested a review from a team as a code owner June 26, 2024 08:52
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coderabbitai bot commented Jun 26, 2024

Walkthrough

The recent updates streamline error handling in the CompetencyRepository and LearningPathRepository by consolidating numerous custom query methods into unified access methods using getValueElseThrow. This refactoring improves code maintainability and readability, centralizing the handling of entity retrieval and associated exceptions.

Changes

File Change Summary
CompetencyRepository.java Removed several custom query methods and replaced them with a generic getValueElseThrow method, simplifying the repository interface.
LearningPathRepository.java Refactored error handling within default methods to use getValueElseThrow, enhancing code readability and maintainability.

Sequence Diagram(s)


Recent review details

Configuration used: .coderabbit.yaml
Review profile: ASSERTIVE

Commits

Files that changed from the base of the PR and between ba49295 and 40e5771.

Files selected for processing (1)
  • src/main/java/de/tum/in/www1/artemis/repository/LearningPathRepository.java (3 hunks)
Additional context used
Path-based instructions (1)
src/main/java/de/tum/in/www1/artemis/repository/LearningPathRepository.java (1)

Pattern src/main/java/**/*.java: naming:CamelCase; principles:{single_responsibility,small_methods,no_duplication}; db:{perf_queries,datetime_not_timestamp}; rest:{stateless,singleton,delegate_logic,http_only,minimal_dtos}; dtos:{java_records,no_entities,min_data,single_resp}; di:constructor_injection; kiss:simple_code; file_handling:os_indep_paths; practices:{least_access,avoid_transactions,code_reuse,static_member_ref,prefer_primitives}; sql:{param_annotation,uppercase,avoid_subqueries};java:avoid_star_imports

Additional comments not posted (5)
src/main/java/de/tum/in/www1/artemis/repository/LearningPathRepository.java (5)

74-74: Centralized exception handling approved.

The consistent application of getValueElseThrow across various methods ensures a uniform approach to error handling. Verify that it is used appropriately in all relevant scenarios.

Verification successful

Centralized exception handling approved.

The consistent application of getValueElseThrow across various methods ensures a uniform approach to error handling. The method is appropriately used in all relevant scenarios.

  • Locations of getValueElseThrow usage:
    • CompetencyRepository.java
    • RepositoryImpl.java
    • ArtemisJpaRepository.java
    • LearningPathRepository.java
    • ProgrammingExerciseRepository.java
    • ComplaintRepository.java
Scripts executed

The following scripts were executed for the analysis:


Script:

#!/bin/bash
# Description: Verify the appropriate usage of `getValueElseThrow` in all relevant scenarios.

# Test: Search for the function usage. Expect: Appropriate usage across the repository.
rg --type java $'getValueElseThrow'

Length of output: 2759


26-26: Centralized exception handling approved.

This change enhances maintainability by centralizing error handling. Ensure that getValueElseThrow is implemented correctly and efficiently handles all potential exceptions.

Verification successful

Centralized exception handling approved.

The implementations of getValueElseThrow in RepositoryImpl correctly handle exceptions by throwing EntityNotFoundException when the optional value is not present. This ensures efficient and consistent error handling across the repository methods.

  • getValueElseThrow(Optional<T> optional):

    @NotNull
    public T getValueElseThrow(Optional<T> optional) {
        return optional.orElseThrow(() -> new EntityNotFoundException(entityInformation.getEntityName()));
    }
  • getValueElseThrow(Optional<T> optional, ID id):

    @NotNull
    public T getValueElseThrow(Optional<T> optional, ID id) {
        return optional.orElseThrow(() -> new EntityNotFoundException(entityInformation.getEntityName(), String.valueOf(id)));
    }

These methods effectively centralize the exception handling logic, enhancing maintainability and readability.

Scripts executed

The following scripts were executed for the analysis:


Script:

#!/bin/bash
# Description: Verify the implementation of `getValueElseThrow`.

# Test: Search for the function implementation. Expect: Efficient and correct handling of exceptions.
rg --type java $'getValueElseThrow'

Length of output: 2759



Script:

#!/bin/bash
# Extract the implementation details of `getValueElseThrow` methods from `RepositoryImpl.java`.

# Retrieve the methods from the file
ast-grep --lang java --pattern $'public T getValueElseThrow(Optional<T> optional) {
  $$$
}' src/main/java/de/tum/in/www1/artemis/repository/base/RepositoryImpl.java

ast-grep --lang java --pattern $'public T getValueElseThrow(Optional<T> optional, ID id) {
  $$$
}' src/main/java/de/tum/in/www1/artemis/repository/base/RepositoryImpl.java

Length of output: 340



Script:

#!/bin/bash
# Locate the method signatures of `getValueElseThrow` and extract the surrounding lines to reveal the full implementations.

# Search for the method signature with one parameter
rg --context 10 'public T getValueElseThrow\(Optional<T> optional\)' src/main/java/de/tum/in/www1/artemis/repository/base/RepositoryImpl.java

# Search for the method signature with two parameters
rg --context 10 'public T getValueElseThrow\(Optional<T> optional, ID id\)' src/main/java/de/tum/in/www1/artemis/repository/base/RepositoryImpl.java

Length of output: 1752


47-47: Centralized exception handling approved.

Using getValueElseThrow consistently across different methods aids in maintainability. Verify the performance implications of this method, especially in complex queries.


40-40: Centralized exception handling approved.

Continued use of getValueElseThrow promotes consistency and maintainability. Verify that it handles all edge cases correctly.


33-33: Centralized exception handling approved.

Consistent use of getValueElseThrow across methods enhances maintainability. Ensure that this method is used correctly in all scenarios where it's applied.


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@github-actions github-actions bot added the server Pull requests that update Java code. (Added Automatically!) label Jun 26, 2024
@MaximilianAnzinger MaximilianAnzinger changed the title Development: Improve code quality of competency repository Development: Improve code quality of competency and learning path repositories Jun 26, 2024
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@JohannesStoehr JohannesStoehr left a comment

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Code

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Actionable comments posted: 1

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@pzdr7 pzdr7 left a comment

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Code looks good 👍

@bassner bassner added this to the 7.3.1 milestone Jun 26, 2024
@bassner bassner merged commit d0c2c15 into develop Jun 26, 2024
23 of 28 checks passed
@bassner bassner deleted the chore/development/improve-al-code-quality branch June 26, 2024 09:15
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4 participants