Validation rule that checks that only one property of a list of properties exists in an object.
Implements: IValidationRule
Description
The OnlyOneExistsRule allows you to check that only one property of a list of properties exists in an object.
Constructors
Creates a new validation rule and sets its values.
public
OnlyOneExistsRule(String… properties)
- properties: String… - list of property names where only 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 OnlyOneExistsRule("field1", "field2"));
schema.validate({ field1: 1, field2: "A" }); // Result: only one of properties field1, field2 must exist
schema.validate({ field1: 1 }); // Result: no errors
schema.validate({ }); // Result: only one of properties field1, field2 must exist
} // Result: only one of properties field1, field2 must exist