com.google.gwt.validation.client.constraints.AssertFalseValidator Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of vaadin-client Show documentation

Vaadin is a web application framework for Rich Internet Applications (RIA). Vaadin enables easy development and maintenance of fast and secure rich web applications with a stunning look and feel and a wide browser support. It features a server-side architecture with the majority of the logic running on the server. Ajax technology is used at the browser-side to ensure a rich and interactive user experience.

There is a newer version: 8.27.1

Show newest version

/*
 * Copyright 2010 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.google.gwt.validation.client.constraints;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import javax.validation.constraints.AssertFalse;

/**
 * {@link AssertFalse} constraint validator implementation.
 */
public class AssertFalseValidator implements
    ConstraintValidator {

  @Override
  public final void initialize(AssertFalse constraintAnnotation) {
  }

  @Override
  public final boolean isValid(Boolean value, ConstraintValidatorContext context) {
    return value == null || !value.booleanValue();
  }

}