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function get_dbo_flocks_by_uid

Maturity: 39

Retrieves a single dbo_Flocks node from a Neo4j graph database by matching its unique identifier (UID).

File:
/tf/active/vicechatdev/neo4j_schema/neo4j_python_snippets.py
Lines:
859 - 866
Complexity:
simple

Purpose

This function queries a Neo4j database to find and return a specific dbo_Flocks node based on its UID property. It's designed for retrieving individual flock records from a graph database, likely part of a larger system managing biological or organizational flock data. The function returns the first matching node or None if no match is found.

Source Code

def get_dbo_flocks_by_uid(uid):
    """Get a dbo_Flocks node by its UID"""
    query = """
    MATCH (n:dbo_Flocks {UID: $uid})
    RETURN n
    """
    result = run_query(query, {"uid": uid})
    return result[0] if result else None

Parameters

Name Type Default Kind
uid - - positional_or_keyword

Parameter Details

uid: The unique identifier (UID) of the dbo_Flocks node to retrieve. Expected to be a string or numeric value that matches the UID property stored in the Neo4j database. This should be a valid, existing UID for a dbo_Flocks node.

Return Value

Returns a single dbo_Flocks node object (typically a dictionary or Neo4j node object) if a matching UID is found, or None if no node with the specified UID exists. The returned node contains all properties associated with that dbo_Flocks record in the database. The function extracts the first element from the result list, assuming UIDs are unique.

Dependencies

  • neo4j

Required Imports

from neo4j import GraphDatabase

Usage Example

# Assuming run_query is defined and Neo4j is configured
from neo4j import GraphDatabase

# Define run_query helper function (example implementation)
def run_query(query, parameters):
    driver = GraphDatabase.driver("bolt://localhost:7687", auth=("neo4j", "password"))
    with driver.session() as session:
        result = session.run(query, parameters)
        return [record["n"] for record in result]
    driver.close()

# Use the function to retrieve a flock by UID
flock_uid = "FLOCK_12345"
flock_node = get_dbo_flocks_by_uid(flock_uid)

if flock_node:
    print(f"Found flock: {flock_node}")
else:
    print(f"No flock found with UID: {flock_uid}")

Best Practices

  • Ensure the run_query function is properly defined and handles Neo4j connection management, including proper session cleanup
  • Validate that the uid parameter is not None or empty before calling this function to avoid unnecessary database queries
  • Consider adding error handling for database connection failures or query execution errors
  • The function assumes UIDs are unique; ensure database constraints enforce UID uniqueness on dbo_Flocks nodes
  • Consider adding type hints for better code documentation (e.g., def get_dbo_flocks_by_uid(uid: str) -> Optional[Dict])
  • Be aware that this function returns only the first result; if multiple nodes share the same UID (which shouldn't happen), only one will be returned
  • Consider implementing connection pooling in the run_query function for better performance in production environments

Tags

neo4j graph-database query database-retrieval node-lookup uid-search dbo_Flocks cypher-query data-access

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