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Retrieves all nodes labeled as 'dbo_Treatments' from a Neo4j graph database with a configurable limit on the number of results returned.

Purpose

This function queries a Neo4j database to fetch treatment-related nodes. It's designed for retrieving medical or healthcare treatment data stored in a graph database structure. The function uses Cypher query language to match nodes with the 'dbo_Treatments' label and returns them through a query execution function. Note: There's a discrepancy between the docstring (which mentions a limit of 25) and the actual default parameter value (100).

Source Code

def get_all_dbo_treatments(limit=100):
    """Return dbo_Treatments nodes (limited to 25)"""
    query = """
    MATCH (n:dbo_Treatments)
    RETURN n
    LIMIT $limit
    """
    return run_query(query, {"limit": limit})

Parameters

Parameter Details

limit: Integer value that controls the maximum number of dbo_Treatments nodes to return from the database. Default is 100, though the docstring incorrectly states 25. This parameter is passed to the Cypher query's LIMIT clause to prevent overwhelming results from large datasets.

Return Value

Returns the result of run_query() function execution, which typically contains a list or collection of Neo4j node objects representing dbo_Treatments entities. The exact return type depends on the implementation of run_query(), but it likely returns a list of dictionaries or Neo4j Record objects containing the node properties. The number of results is capped by the limit parameter.

Dependencies

• neo4j

Required Imports

from neo4j import GraphDatabase

Usage Example

# Assuming run_query is defined and Neo4j connection is configured
# Example 1: Get default 100 treatments
treatments = get_all_dbo_treatments()
for treatment in treatments:
    print(treatment)

# Example 2: Get only 10 treatments
treatments_limited = get_all_dbo_treatments(limit=10)

# Example 3: Get maximum treatments (adjust based on database size)
all_treatments = get_all_dbo_treatments(limit=1000)

Best Practices

• Be aware of the discrepancy between the docstring (25) and actual default limit (100) - update documentation accordingly
• Ensure the run_query() function is properly implemented with error handling for database connection issues
• Consider adding error handling for cases where the database connection fails or the dbo_Treatments label doesn't exist
• For production use, validate that the limit parameter is a positive integer to prevent invalid queries
• Be mindful of memory usage when setting high limit values on large datasets
• Consider adding pagination support for very large result sets instead of relying solely on LIMIT
• Ensure proper Neo4j driver cleanup and connection management in the run_query implementation

Tags

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