Validation rule that checks that at least one of the object’s properties exists.
Implements: IValidationRule
Description
The AtLeastOneExistsRule class allows you to check that given a set of properties, at least one of them exists.
Constructors
Creates a new validation rule and sets its values
public
AtLeastOneExistsRule(AtLeastOneExistsRule(String… properties))
- properties: AtLeastOneExistsRule(String… properties) - list of property names where at least one property must exist
Instance methods
validate
Validates a given value against this rule.
public
void validate(String path, Schema schema, Object value, List<ValidationResult> results)
- path: string - dot notation path to the value.
- schema: Schema - schema this rule is called from.
- value: any - value to be validated.
- results: List<ValidationResult> - list with validation results.
Examples
{@code
Schema schema = new Schema()
.withRule(new AtLeastOneExistsRule("field1", "field2"));
schema.validate({ field1: 1, field2: "A" }); // Result: no errors
schema.validate({ field1: 1 }); // Result: no errors
schema.validate({ }); // Result: at least one of properties field1, field2 must exist
}