function get_all_dbo_product
Queries a Neo4j graph database to retrieve all nodes labeled as 'dbo_Product' with a configurable limit on the number of results returned.
/tf/active/vicechatdev/neo4j_schema/neo4j_python_snippets.py
997 - 1004
simple
Purpose
This function provides a simple interface to fetch product nodes from a Neo4j database. It's designed for retrieving product data in bulk, with a default limit to prevent overwhelming queries. The function is useful for data exploration, product catalog retrieval, or feeding product information into downstream processing pipelines. Note: There's a discrepancy between the docstring (which mentions 25) and the actual default limit (100).
Source Code
def get_all_dbo_product(limit=100):
"""Return dbo_Product nodes (limited to 25)"""
query = """
MATCH (n:dbo_Product)
RETURN n
LIMIT $limit
"""
return run_query(query, {"limit": limit})Parameters
| Name | Type | Default | Kind |
|---|---|---|---|
limit |
- | 100 | positional_or_keyword |
Parameter Details
limit: Integer value that controls the maximum number of dbo_Product nodes to return from the database. Defaults to 100. Can be adjusted based on performance requirements and data volume needs. Should be a positive integer; values too large may impact query performance.
Return Value
Returns the result of the run_query() function, which typically contains a list or collection of Neo4j node objects representing dbo_Product 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. Returns up to 'limit' number of nodes. If no products exist, returns an empty collection.
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 products
products = get_all_dbo_product()
for product in products:
print(product)
# Example 2: Get only 10 products
products_limited = get_all_dbo_product(limit=10)
# Example 3: Get all products (use with caution)
all_products = get_all_dbo_product(limit=10000)Best Practices
- Be cautious with the limit parameter - setting it too high may cause performance issues or memory problems
- The docstring incorrectly states 'limited to 25' but the default is 100 - this should be corrected for consistency
- Ensure the run_query function properly handles database connections and error cases
- Consider adding error handling for database connection failures
- For production use, consider adding pagination support instead of relying solely on LIMIT
- Validate that the limit parameter is a positive integer before passing to the query
- Consider adding additional filtering parameters (e.g., by product category, price range) for more flexible queries
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