GwtConstraintValidatorFactory.java

/*
 * Copyright 2010 Google Inc. Copyright 2016 Manfred Tremmel
 *
 * 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 de.knightsoftnet.validators.client;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorFactory;

/**
 * GWT does not support {@link ConstraintValidatorFactory} use
 * {@link com.google.gwt.core.client.GWT#create(Class) GWT.create(Class)} instead. Using this class
 * throws a {@link UnsupportedOperationException}.
 */
public class GwtConstraintValidatorFactory implements ConstraintValidatorFactory {

  /**
   * Always throws {@link UnsupportedOperationException}.
   *
   * @throws UnsupportedOperationException unsupported on gwt
   */
  @Override
  public <T extends ConstraintValidator<?, ?>> T getInstance(final Class<T> key) {
    throw new UnsupportedOperationException("GWT does not support "
        + ConstraintValidatorFactory.class.getName() + " use GWT.create instead");
  }

  @Override
  public void releaseInstance(final ConstraintValidator<?, ?> pinstance) {
    // ignore the call, as generating is done by GWT.create, release isn't done here
  }
}