content: package act.validation;
  
  /*-
   * #%L
   * ACT Framework
   * %%
   * Copyright (C) 2014 - 2017 ActFramework
   * %%
   * 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.
   * #L%
   */
  
  import act.app.App;
  import act.plugin.AppServicePlugin;
  
  import javax.inject.Singleton;
  import javax.validation.*;
  
  @Singleton
  public class ValidationPlugin extends AppServicePlugin {
  
      private Configuration config;
      private ValidatorFactory factory;
      public Validator validator;
  
      @Override
      protected void applyTo(App app) {
          init(app);
          app.registerSingleton(ValidationPlugin.class, this);
      }
  
      private void init(App app) {
          config = Validation.byDefaultProvider().configure();
          config.messageInterpolator(new ActValidationMessageInterpolator(config.getDefaultMessageInterpolator(), app.config()));
          ensureFactoryValidator();
      }
  
      private void ensureFactoryValidator() {
          if (validator != null) {
              return;
          }
          if (factory == null) {
              factory = config.buildValidatorFactory();
          }
          validator = factory.getValidator();
      }
  
  }
  