graphcast.filter

Filter expression system for database queries.

This package provides a flexible system for creating and evaluating filter expressions that can be translated into different database query languages (AQL, Cypher, Python).

Key Components

• LogicalOperator: Logical operations (AND, OR, NOT, IMPLICATION)
• ComparisonOperator: Comparison operations (==, !=, >, <, etc.)
• Clause: Filter clause implementation
• Expression: Filter expression factory

Example

from graphcast.filter import Expression expr = Expression.from_dict({ ... "AND": [ ... {"field": "age", "cmp_operator": ">=", "value": 18}, ... {"field": "status", "cmp_operator": "==", "value": "active"} ... ] ... })

Converts to: "age >= 18 AND status == 'active'"