refactor: Refactor DataSourceProxy

[slievrly]

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• I have registered the PR changes.

Ⅰ. Describe what this PR did

Refactor DataSourceProxy

Ⅱ. Does this pull request fix one issue?

Ⅲ. Why don't you add test cases (unit test/integration test)?

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov]

Codecov Report

❌ Patch coverage is 80.74074% with 26 lines in your changes missing coverage. Please review.
✅ Project coverage is 61.32%. Comparing base (3f86ccd) to head (a24e640).
⚠️ Report is 3 commits behind head on 2.x.

Files with missing lines	Patch %	Lines
...rce/initializer/db/OscarResourceIdInitializer.java	25.00%	6 Missing ⚠️
...initializer/db/SqlServerResourceIdInitializer.java	78.57%	1 Missing and 5 partials ⚠️
...source/initializer/db/DMResourceIdInitializer.java	80.95%	1 Missing and 3 partials ⚠️
...rce/initializer/db/MysqlResourceIdInitializer.java	81.25%	1 Missing and 2 partials ⚠️
...nitializer/db/PostgresqlResourceIdInitializer.java	86.95%	0 Missing and 3 partials ⚠️
...ce/initializer/db/OracleResourceIdInitializer.java	75.00%	1 Missing and 1 partial ⚠️
...rce/initializer/ResourceIdInitializerRegistry.java	92.85%	1 Missing ⚠️
...e/initializer/db/DefaultResourceIdInitializer.java	87.50%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x    #7615      +/-   ##
============================================
+ Coverage     61.27%   61.32%   +0.05%     
  Complexity      666      666              
============================================
  Files          1314     1323       +9     
  Lines         49817    49857      +40     
  Branches       5858     5861       +3     
============================================
+ Hits          30524    30574      +50     
+ Misses        16549    16546       -3     
+ Partials       2744     2737       -7     

Files with missing lines	Coverage Δ
...rg/apache/seata/rm/datasource/DataSourceProxy.java	62.50% <100.00%> (-5.38%)	⬇️
...rce/initializer/AbstractResourceIdInitializer.java	100.00% <100.00%> (ø)
...rce/initializer/ResourceIdInitializerRegistry.java	92.85% <92.85%> (ø)
...e/initializer/db/DefaultResourceIdInitializer.java	87.50% <87.50%> (ø)
...ce/initializer/db/OracleResourceIdInitializer.java	75.00% <75.00%> (ø)
...rce/initializer/db/MysqlResourceIdInitializer.java	81.25% <81.25%> (ø)
...nitializer/db/PostgresqlResourceIdInitializer.java	86.95% <86.95%> (ø)
...source/initializer/db/DMResourceIdInitializer.java	80.95% <80.95%> (ø)
...rce/initializer/db/OscarResourceIdInitializer.java	25.00% <25.00%> (ø)
...initializer/db/SqlServerResourceIdInitializer.java	78.57% <78.57%> (ø)

... and 5 files with indirect coverage changes

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[Copilot]

Pull Request Overview

This PR refactors the DataSourceProxy class by extracting database-specific resource ID initialization logic into separate initializer classes using a registry pattern. This improves code organization and maintainability by removing the large if-else chain from the DataSourceProxy.

• Extracted resource ID initialization logic into separate database-specific initializer classes
• Created a registry pattern to manage and select appropriate initializers
• Simplified the DataSourceProxy class by delegating initialization to the registry system

Reviewed Changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
DataSourceProxy.java	Removed database-specific initialization methods and replaced with registry-based delegation
ResourceIdInitializer.java	New interface defining the contract for resource ID initializers
AbstractResourceIdInitializer.java	Abstract base class providing common initialization structure
ResourceIdInitializerRegistry.java	Registry class managing all database-specific initializers
*ResourceIdInitializer.java	Database-specific initializer implementations (MySQL, PostgreSQL, Oracle, etc.)

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