cherry-pick: add test cases for search by id and struct array. (#1749)

[yongpengli-z]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @yongpengli-z, 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 introduces significant enhancements to the Milvus V2 Java client's test suite, focusing on advanced data modeling and manipulation capabilities. It provides robust validation for the new Struct Array feature, allowing users to embed and query vector arrays within structured data. Concurrently, it expands the Search functionality to support direct searches by primary key, offering more flexible data retrieval options. Furthermore, the addition of Partial Update tests ensures the reliability of updating specific entity fields, improving data management efficiency. These changes collectively bolster the client's stability and feature completeness.

Highlights

• New Test Suite for Struct Array Feature: A comprehensive new test file, StructArrayTest.java, has been added to validate the Struct Array feature, including the ability to store and query arrays of vectors within a struct. This covers collection creation, data insertion, index creation on struct vector fields, and various search and query operations.
• Enhanced Search by Primary Key Functionality: The SearchTest.java file has been significantly extended with new test cases for performing searches using primary keys (both Int64 and VarChar). This includes basic searches, searches with filters, range searches, grouping, pagination, and tests for single/multiple primary keys, as well as error handling for invalid inputs.
• Introduction of Partial Update Test Cases: The UpsertTest.java file now includes extensive test cases for partial updates. This new functionality allows updating specific fields of existing entities without overwriting the entire record, covering scalar fields, JSON fields, vector fields, and dynamic fields.
• Utility Method Additions and Modifications: The CommonData.java and CommonFunction.java utility files have been updated to support the new test cases. CommonData now includes constants for struct array fields, while CommonFunction provides new methods for creating collections with VarChar primary keys, generating data for them, and handling struct array collection creation, data generation, and index management.
• Refined Search Assertions and Data Providers: Assertions in SearchTest.java for BinaryVector, BFloat16Vector, and Float16Vector search results have been made more flexible to account for potential data distribution variations. A new data provider VectorTypeListWithoutSparse was introduced to exclude sparse vectors from certain tests, and topK parameters were updated to limit for API consistency.

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[gemini-code-assist]

Code Review

This pull request adds a comprehensive set of test cases for new features, including search by ID (for both Int64 and Varchar primary keys) and operations on struct arrays containing vectors. It also introduces tests for the partial update functionality of the upsert operation. The new tests are well-structured, covering a wide range of scenarios including positive, negative, and boundary cases, which significantly improves the test coverage for these features. My review includes a few suggestions to enhance code quality, performance in test helper methods, and the robustness of exception testing.

[yhmo]

/lgtm
/approve

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: yhmo, yongpengli-z

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• OWNERS [yhmo]

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