Add Python client library for aircraft data with repository pattern and architecture documentation

[Copilot]

Implements a type-safe Python client for querying aircraft operational data from Neo4j, with comprehensive architecture documentation including mermaid diagrams.

Implementation

Models (neo4j_client/models.py)

• 9 Pydantic models: Aircraft, Airport, Flight, System, Component, Sensor, Reading, MaintenanceEvent, Delay
• Full type validation and serialization

Repositories (neo4j_client/repository.py)

• AircraftRepository: CRUD operations (create, find_by_id, find_by_tail_number, find_by_operator, update, delete)
• FlightRepository: Query flights by aircraft
• AirportRepository: Query by IATA code
• SystemRepository: Query aircraft systems
• MaintenanceEventRepository: Query by aircraft or severity
• All queries parameterized to prevent injection

Infrastructure

• connection.py: Context manager for Neo4j driver lifecycle
• exceptions.py: Typed exception hierarchy (ConnectionError, QueryError, NotFoundError)

Documentation

• ARCHITECTURE.md: System design with mermaid diagrams covering component architecture, data flow, repository pattern, query patterns, and security model
• README_CLIENT.md: Usage examples and API reference
• examples/usage_example.py: Runnable demonstrations

Testing

• 17 integration tests using testcontainers
• Covers CRUD operations, edge cases, error handling

Usage

from neo4j_client import Neo4jConnection, AircraftRepository, MaintenanceEventRepository

with Neo4jConnection(uri, username, password) as conn:
    # Query aircraft
    aircraft_repo = AircraftRepository(conn)
    aircraft = aircraft_repo.find_by_operator("American Airlines", limit=10)
    
    # Get maintenance events
    maint_repo = MaintenanceEventRepository(conn)
    critical = maint_repo.find_by_severity("CRITICAL", limit=5)

Security

• All Cypher queries use named parameters
• Pydantic validation before database operations
• MERGE over CREATE to prevent duplicates

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• 0.0.0.0.in-addr.arpa
  • Triggering command: /opt/java/openjdk/bin/java -cp /var/lib/neo4j/plugins/*:/var/lib/neo4j/conf/*:/var/lib/neo4j/lib/* -XX:+UseG1GC -XX:-OmitStackTraceInFastThrow -XX:+AlwaysPreTouch -XX:+UnlockExperimentalVMOptions -XX:+TrustFinalNonStaticFields -XX:+DisableExplicitGC -Djdk.nio.maxCachedBufferSize=1024 -Dio.netty.tryReflectionSetAccessible=true -Djdk.tls.ephemeralDHKeySize=2048 -Djdk.tls.rejectClientInitiatedRenegotiation=true -XX:FlightRecorderOptions=stackdepth=256 -XX:+UnlockDiagnosticVMOptions -XX:+DebugNonSafepoints --add-opens=java.base/java.nio=ALL-UNNAMED --add-opens=java.base/java.io=ALL-UNNAMED --add-opens=java.base/sun.nio.ch=ALL-UNNAMED -Dlog4j2.disable.jmx=true -Dfile.encoding=UTF-8 org.neo4j.server.CommunityEntryPoint --home-dir=/var/lib/neo4j --config-dir=/var/lib/neo4j/conf --console-mode (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Create a starting python client for working with aircraft data</issue_title>
<issue_description>Create a starting python client for working with aircraft data in the neo4j database and include an architecture markdown with mermaid diagrams</issue_description>

Comments on the Issue (you are @copilot in this section)

Custom agent used: neo4j-docker-client-generator
AI agent that generates simple, high-quality Python Neo4j client libraries from GitHub issues with proper best practices

• Fixes Create a starting python client for working with aircraft data #19

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