javax.validation

Interface Validator


  • public interface Validator
    Validates bean instances. Implementations of this interface must be thread-safe.
    Author:
    Emmanuel Bernard, Hardy Ferentschik, Gunnar Morling
    • Method Detail

      • validate

        <T> Set<ConstraintViolation<T>> validate(T object,
                                                 Class<?>... groups)
        Validates all constraints on object.
        Parameters:
        object - object to validate
        groups - the group or list of groups targeted for validation (defaults to Default)
        Returns:
        constraint violations or an empty set if none
        Throws:
        IllegalArgumentException - if object is null or if null is passed to the varargs groups
        ValidationException - if a non recoverable error happens during the validation process
      • validateProperty

        <T> Set<ConstraintViolation<T>> validateProperty(T object,
                                                         String propertyName,
                                                         Class<?>... groups)
        Validates all constraints placed on the property of object named propertyName.
        Parameters:
        object - object to validate
        propertyName - property to validate (i.e. field and getter constraints)
        groups - the group or list of groups targeted for validation (defaults to Default)
        Returns:
        constraint violations or an empty set if none
        Throws:
        IllegalArgumentException - if object is null, if propertyName is null, empty or not a valid object property or if null is passed to the varargs groups
        ValidationException - if a non recoverable error happens during the validation process
      • getConstraintsForClass

        BeanDescriptor getConstraintsForClass(Class<?> clazz)
        Returns the descriptor object describing bean constraints.

        The returned object (and associated objects including ConstraintDescriptors) are immutable.

        Parameters:
        clazz - class or interface type evaluated
        Returns:
        the bean descriptor for the specified class
        Throws:
        IllegalArgumentException - if clazz is null
        ValidationException - if a non recoverable error happens during the metadata discovery or if some constraints are invalid.
      • unwrap

        <T> T unwrap(Class<T> type)
        Returns an instance of the specified type allowing access to provider-specific APIs.

        If the Bean Validation provider implementation does not support the specified class, ValidationException is thrown.

        Parameters:
        type - the class of the object to be returned
        Returns:
        an instance of the specified class
        Throws:
        ValidationException - if the provider does not support the call
      • forExecutables

        ExecutableValidator forExecutables()
        Returns the contract for validating parameters and return values of methods and constructors.
        Returns:
        contract for method and constructor validation
        Since:
        1.1

Document created the 11/06/2005, last modified the 18/08/2025
Source of the printed document:https://www.gaudry.be/en/java-api-javaee-rf-javax/validation/validator.html

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References

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