ValueComparisonRule

Implements: IValidationRule

Description

The ValueComparisonRule class allows you to create a validation rule that compares a value to a constant.

Constructors

Creates a new validation rule and sets its values.

public constructor(operation: string, value: any)

• operation: string - comparison operation: "==" ("=", “EQ”), “!= " ("<>”, “NE”); “<"/">” (“LT”/“GT”), “<="/">=” (“LE”/“GE”); “LIKE”.
• value: any - constant value to compare to

Instance methods

validate

Validates a given value against this rule.

public validate(path: string, schema: Schema, value: any, results: ValidationResult[]): void

• path: string - dot notation path to the value.
• schema: Schema - schema this rule is called from
• value: any - value to be validated.
• results: ValidationResult[] - list with validation results to add new results.

Examples

let schema = Schema().withRule(ValueComparisonRule("EQ", 1))

schema.validate(1)          // Result: no errors
schema.validate(2)          // Result: 2 is not equal to 1

See also

• IValidationRule