Add example for multi-analyzer

[yhmo]

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[gemini-code-assist]

Summary of Changes

Hello @yhmo, 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 a comprehensive example demonstrating Milvus's multi-analyzer capabilities, which are crucial for handling diverse textual data, especially in multilingual contexts. It provides a clear guide on how to set up different text processing pipelines for a single field and apply them dynamically during data insertion and search operations. Additionally, a minor refactoring was performed in an existing example to enhance code clarity.

Highlights

• New Multi-Analyzer Example: A new example file, MultiAnalyzerExample.java, has been added to demonstrate how to configure and utilize multiple text analyzers within a single Milvus collection. This allows for flexible text processing based on different languages or specific analysis requirements.
• Configurable Analyzers: The new example showcases the definition of various analyzers (English, Chinese, Japanese, and a default one) with distinct tokenizers and filters. It illustrates how to map these analyzers to data records using a dedicated 'language' field and multiAnalyzerParams.
• Multilingual Full-Text Search: The example includes inserting multilingual text data and performing searches where the appropriate analyzer is dynamically selected for each query, enabling effective full-text search across diverse linguistic content.
• Code Refactoring: The FullTextSearchExample.java file has been refactored to introduce a TEXT_FIELD constant, improving code readability and maintainability by replacing hardcoded string literals with a named constant.

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[gemini-code-assist]

Code Review

This pull request introduces a new example for the multi-analyzer feature and refactors an existing example to use constants, which is a good improvement. The new example is well-structured and demonstrates the feature effectively. I've provided a couple of suggestions to enhance the code quality of the new example file: one to address a potential resource leak by using a try-with-resources statement, and another to replace the use of double-brace initialization, which is considered an anti-pattern, with a more modern and safer approach.