builder

🛠 RuleBuilder Example (Fluent API)

This example demonstrates the use of the Fluent Builder API to create rules in a more ergonomic, readable, and intuitive way without having to directly manipulate complex structures.

Features Illustrated

1. Fluent Rule Builder

rule := gre.NewRuleBuilder().
    WithName("my-rule").
    WithPriority(100).
    WithConditions(gre.ConditionNode{
        Condition: gre.Equal("age", 18),
    }).
    WithOnSuccess([]string{"callback-name"}).
    Build()

2. Callback Functions (Helpers) for Conditions

• Equal(fact, value) - Equality
• NotEqual(fact, value) - Inequality
• GreaterThan(fact, value) - Greater than
• GreaterThanInclusive(fact, value) - Greater than or equal to
• LessThan(fact, value) - Less than
• LessThanInclusive(fact, value) - Less than or equal to
• In(fact, values) - Presence in a list
• NotIn(fact, values) - Absence from a list
• Contains(fact, value) - Contains the value
• NotContains(fact, value) - Does not contain the value
• Regex(fact, pattern) - Regex match

3. Helpers for ConditionSet

• All(conditions...) - AND logic
• Any(conditions...) - OR logic
• None(conditions...) - NOT logic
• AllSets(sets...) - Nested AND logic
• AnySets(sets...) - Nested OR logic

Execution

go run main.go