Struct OneOfValidator 

pub struct OneOfValidator;

Validates that exactly one field from the specified set is provided.

Example

use fraiseql_core::validation::mutual_exclusivity::OneOfValidator;
use serde_json::json;
// Either entityId OR entityPayload, but not both
let input = json!({ "entityId": "123", "entityPayload": null });
assert!(
    OneOfValidator::validate(&input, &["entityId".to_string(), "entityPayload".to_string()], None).is_ok(),
    "one-of constraint satisfied when only entityId is present"
);

Implementations

impl OneOfValidator

pub fn validate( input: &Value, field_names: &[String], context_path: Option<&str>, ) -> Result<()>

Validate that exactly one field from the set is present and non-null.

Errors

Returns FraiseQLError::Validation if zero or more than one field is present.