/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.isis.viewer.wicket.ui.pages.accmngt;
import org.apache.wicket.validation.IValidatable;
import org.apache.wicket.validation.IValidator;
import org.apache.wicket.validation.ValidationError;
import org.apache.isis.applib.services.userreg.UserRegistrationService;
import org.apache.isis.core.metamodel.services.ServicesInjector;
import org.apache.isis.core.runtime.system.context.IsisContext;
import org.apache.isis.core.runtime.system.session.IsisSessionFactory;
/**
* Validates that an username is or is not already in use by someone else
*/
public class UsernameAvailableValidator implements IValidator<String> {
public static final UsernameAvailableValidator INSTANCE = new UsernameAvailableValidator();
private UsernameAvailableValidator() {
}
@Override
public void validate(final IValidatable<String> validatable) {
getIsisSessionFactory().doInSession(new Runnable() {
@Override
public void run() {
UserRegistrationService userRegistrationService = getServicesInjector().lookupServiceElseFail(UserRegistrationService.class);
final String username = validatable.getValue();
boolean usernameExists = userRegistrationService.usernameExists(username);
if (usernameExists) {
validatable.error(new ValidationError().addKey("usernameIsNotAvailable"));
}
}
});
}
ServicesInjector getServicesInjector() {
return getIsisSessionFactory().getServicesInjector();
}
IsisSessionFactory getIsisSessionFactory() {
return IsisContext.getSessionFactory();
}
}