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Merge pull request #22 from springframeworkguru/Issue-21-JPA-test-coverage
Issue 21 jpa test coverage
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‎.junie/guidelines.md‎

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**Always run tests** to verify correctness of proposed solutions:
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### Running Tests
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```bash
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# Test all modules
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mvn clean test
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# Test specific module with dependencies
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mvn test -pl openespi-datacustodian -am
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# Test only Spring Boot 3.5 modules
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mvn test -Pspring-boot-only
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# Module-specific testing
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cd openespi-common && mvn test
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cd openespi-datacustodian && mvn test -am
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cd openespi-authserver && mvn test -am
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```
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### Test Categories
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- **Unit tests** - Fast, isolated component testing
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- **Green Button compliance tests** - ESPI specification adherence
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## Build Instructions
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**Build the project** before submitting results to ensure compilation success:
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### Standard Build
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```bash
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# Build all modules (recommended)
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mvn clean install
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# Build only production-ready Spring Boot 3.5 modules
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mvn clean install -Pspring-boot-only
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```
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### Development Build
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```bash
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# Quick compile without tests
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mvn clean compile
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# Package without running tests (use sparingly)
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mvn clean package -DskipTests
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```
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### Running Applications
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```bash
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# Data Custodian (port 8080)
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cd openespi-datacustodian && mvn spring-boot:run
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# Authorization Server (port 8081)
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cd openespi-authserver && mvn spring-boot:run
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# Third Party (port 8082)
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cd openespi-thirdparty && mvn spring-boot:run
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```
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## Code Style Guidelines
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### Java Standards
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- When creating or updating tests, use the Junit `@DisplayName` annotation to provide a human readable name for the test. This will improve the quality of the test report.
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- When creating or updating tests, use the Junit `@Nested` annotation to group related tests. This will improve the readability of the test report.
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- When investigating test failures of transaction tests, verify the service implementation uses saveAndFlush() to save the entity. This will ensure the entity is saved to the database before the transaction is committed.
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- When testing persistence operations with JPA, do not set the id property. The Id property is set by Hibernate when the entity is saved to the database, and should not be set ahead of time.

‎.junie/prompts/Issue-21-jpa-test-coverage/phase3-plan.md‎

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# Phase 3 Implementation Plan: Specialized & Edge Case Testing
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## OpenESPI-GreenButton-Java JPA Test Coverage
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### Executive Summary
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**Current Status:** Phase 1 & 2 Complete (14.5/85+ tasks, 17% progress)
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**Phase 3 Target:** Complete remaining specialized repositories and advanced testing scenarios
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**Estimated Effort:** 25-35 hours across 3 weeks
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**Timeline:** Week 3-4 of implementation
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---
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## Phase 3.1: Specialized Repository Test Suites (Week 3)
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### Task 3.1.1: AggregatedNodeRefRepository Test Suite
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**Priority:** High | **Effort:** 6 hours | **Dependencies:** Review entity structure
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**Deliverables:**
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- [ ] Create `AggregatedNodeRefRepositoryTest.java`
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- [ ] Implement CRUD operations testing (save, findById, findAll, delete, count)
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- [ ] Add node reference field validation testing
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- [ ] Create aggregation relationship testing
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- [ ] Test custom query methods (if any exist)
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- [ ] Validate constraint handling and error scenarios
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**Technical Focus:**
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- Node reference management and validation
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- Aggregation hierarchy relationships
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- Market data integration points
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- Performance with large node collections
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### Task 3.1.2: PnodeRefRepository Test Suite
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**Priority:** High | **Effort:** 6 hours | **Dependencies:** Review pricing node structure
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**Deliverables:**
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- [ ] Create `PnodeRefRepositoryTest.java`
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- [ ] Implement CRUD operations testing
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- [ ] Add pricing node reference field testing
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- [ ] Create market data relationship testing
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- [ ] Test pricing calculation integration points
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- [ ] Validate temporal data handling (pricing periods)
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**Technical Focus:**
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- Pricing node reference validation
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- Market data relationship integrity
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- Temporal pricing period handling
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- Integration with usage point pricing
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### Task 3.1.3: ResourceRepository Test Suite
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**Priority:** High | **Effort:** 8 hours | **Dependencies:** Review resource hierarchy
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**Deliverables:**
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- [ ] Create `ResourceRepositoryTest.java`
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- [ ] Implement generic resource management testing
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- [ ] Add resource hierarchy relationship testing
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- [ ] Create resource type polymorphism testing
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- [ ] Test resource lifecycle management
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- [ ] Validate resource linking and references
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**Technical Focus:**
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- Generic resource pattern implementation
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- Polymorphic resource type handling
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- Resource hierarchy navigation
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- Cross-resource relationship integrity
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---
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## Phase 3.2: Advanced Testing & Edge Cases (Week 3-4)
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### Task 3.2.1: Complex Relationship Integration Tests
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**Priority:** High | **Effort:** 12 hours | **Dependencies:** All repository tests complete
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**Deliverables:**
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- [ ] Create `ComplexRelationshipIntegrationTest.java`
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- [ ] Implement multi-level cascade operation testing
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- [ ] Customer → Statement → StatementRef cascade operations
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- [ ] UsagePoint → MeterReading → IntervalBlock → IntervalReading hierarchy
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- [ ] Authorization → ApplicationInformation → RetailCustomer relationships
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- [ ] Add circular reference prevention testing
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- [ ] Create orphan removal validation across entity hierarchies
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- [ ] Implement lazy loading behavior verification
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- [ ] Test transaction boundary scenarios
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- [ ] Validate bulk operation integrity
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**Technical Focus:**
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- Multi-entity transaction scenarios
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- Cascade operation verification
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- Lazy loading optimization
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- Circular reference detection
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- Orphan removal across hierarchies
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### Task 3.2.2: Performance & Constraint Testing
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**Priority:** Medium | **Effort:** 10 hours | **Dependencies:** 3.2.1 complete
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**Deliverables:**
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- [ ] Create `PerformanceConstraintTest.java`
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- [ ] Implement large dataset handling (1000+ entities)
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- [ ] Add query performance validation (< 100ms per query)
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- [ ] Create memory usage optimization testing
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- [ ] Implement batch operation efficiency testing
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- [ ] Test concurrent access scenarios
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- [ ] Validate connection pool behavior under load
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**Technical Focus:**
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- Large dataset performance
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- Query optimization verification
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- Memory usage patterns
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- Batch operation efficiency
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- Concurrent access handling
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### Task 3.2.3: Edge Case & Error Handling Tests
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**Priority:** Medium | **Effort:** 8 hours | **Dependencies:** Core repositories complete
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**Deliverables:**
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- [ ] Create `EdgeCaseErrorHandlingTest.java`
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- [ ] Implement null parameter handling across all repositories
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- [ ] Add invalid UUID format testing
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- [ ] Create constraint violation exception testing
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- [ ] Implement concurrent modification testing
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- [ ] Add database connection failure simulation
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- [ ] Test transaction rollback scenarios
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- [ ] Validate error message consistency
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**Technical Focus:**
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- Comprehensive error scenario coverage
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- Exception handling consistency
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- Transaction rollback verification
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- Database failure recovery
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- Input validation edge cases
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---
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## Phase 3.3: Documentation & Quality Assurance (Week 4)
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### Task 3.3.1: Test Documentation & Guidelines
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**Priority:** Medium | **Effort:** 6 hours | **Dependencies:** All tests complete
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**Deliverables:**
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- [ ] Create `TESTING_GUIDELINES.md` - Comprehensive testing documentation
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- [ ] Add code examples and best practices
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- [ ] Create test data creation patterns
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- [ ] Add troubleshooting guide for common issues
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- [ ] Document testing infrastructure setup
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- [ ] Create maintenance and extension guidelines
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**Technical Focus:**
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- Comprehensive documentation
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- Best practice examples
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- Troubleshooting guides
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- Future maintenance guidance
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### Task 3.3.2: Code Coverage Analysis & Optimization
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**Priority:** Medium | **Effort:** 8 hours | **Dependencies:** All tests complete
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**Deliverables:**
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- [ ] Generate code coverage report and analysis
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- [ ] Identify coverage gaps
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- [ ] Create additional tests for uncovered code paths
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- [ ] Provide performance optimization recommendations
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- [ ] Document coverage metrics achievement
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- [ ] Create coverage monitoring setup
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**Technical Focus:**
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- Coverage gap identification
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- Performance optimization
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- Metrics documentation
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- Monitoring setup
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---
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## Implementation Strategy
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### Week 3 Focus (Days 1-5)
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1. **Days 1-2:** Complete Task 3.1.1 (AggregatedNodeRefRepository)
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2. **Days 3-4:** Complete Task 3.1.2 (PnodeRefRepository)
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3. **Day 5:** Begin Task 3.1.3 (ResourceRepository)
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### Week 4 Focus (Days 1-5)
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1. **Days 1-2:** Complete Task 3.1.3 (ResourceRepository)
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2. **Days 3-4:** Complete Task 3.2.1 (Complex Relationship Integration)
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3. **Day 5:** Begin Task 3.2.2 (Performance & Constraint Testing)
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### Week 5 Focus (Days 1-3)
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1. **Day 1:** Complete Task 3.2.2 & 3.2.3
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2. **Day 2:** Complete Task 3.3.1 (Documentation)
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3. **Day 3:** Complete Task 3.3.2 (Coverage Analysis)
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---
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## Success Criteria
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### Technical Requirements
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- [ ] All specialized repository tests follow established patterns
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- [ ] Complex relationship scenarios thoroughly tested
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- [ ] Performance benchmarks met (< 100ms query times)
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- [ ] 90%+ code coverage achieved across repository layer
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- [ ] All edge cases and error scenarios covered
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### Quality Metrics
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- [ ] Zero critical SonarQube issues
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- [ ] 100% test pass rate maintained
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- [ ] Tests execute in under 60 seconds total
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- [ ] Memory usage optimized for large datasets
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- [ ] Documentation comprehensive and maintainable
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### Deliverable Targets
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- [ ] 22 repository test classes completed
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- [ ] 300+ individual test methods implemented
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- [ ] 5 utility classes for test infrastructure
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- [ ] Comprehensive testing documentation
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- [ ] Performance analysis and optimization guide
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---
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## Risk Mitigation
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### Technical Risks
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- **Complex Entity Relationships:** Start with simpler specialized repositories first
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- **Performance Testing Complexity:** Use incremental dataset sizes for validation
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- **Integration Test Scope:** Focus on critical relationship paths initially
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### Timeline Risks
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- **Specialized Repository Complexity:** Allow buffer time for entity structure analysis
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- **Performance Testing Setup:** Prepare test data generation scripts early
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- **Documentation Scope:** Create templates and examples incrementally
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### Quality Risks
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- **Coverage Gap Identification:** Run coverage analysis after each major milestone
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- **Test Maintenance:** Document test patterns for future maintainability
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- **Performance Regression:** Establish baseline metrics early in Phase 3
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---
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## Next Immediate Actions
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1. **Investigate Specialized Entities:** Review AggregatedNodeRefEntity, PnodeRefEntity, and ResourceEntity structures
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2. **Prepare Test Infrastructure:** Extend TestDataBuilders for specialized entities
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3. **Set Up Performance Testing:** Configure test data generation for large datasets
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4. **Plan Integration Scenarios:** Map out complex relationship test cases
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5. **Establish Coverage Baseline:** Run current coverage analysis to identify gaps
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This plan provides a structured approach to completing the remaining 70+ tasks in Phase 3, with clear priorities, dependencies, and success criteria for achieving the 90%+ code coverage target.

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