Java tutorial
/* * File created on Apr 15, 2014 * * Copyright (c) 2014 Virginia Polytechnic Institute and State University * * 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 org.soulwing.credo.service.group; import javax.ejb.ConcurrencyManagement; import javax.ejb.ConcurrencyManagementType; import javax.ejb.Singleton; import javax.ejb.TransactionAttribute; import javax.ejb.TransactionAttributeType; import javax.inject.Inject; import org.apache.commons.lang.Validate; import org.soulwing.credo.service.Errors; import org.soulwing.credo.service.GroupAccessException; import org.soulwing.credo.service.MergeConflictException; import org.soulwing.credo.service.PassphraseException; /** * A {@link CreateGroupService} implemented as an EJB. * * @author Carl Harris */ @Singleton @ConcurrencyManagement(ConcurrencyManagementType.BEAN) public class EditGroupServiceBean implements EditGroupService { @Inject protected GroupEditorFactory editorFactory; /** * {@inheritDoc} */ @Override @TransactionAttribute(TransactionAttributeType.REQUIRED) public GroupEditor editGroup(Long id) throws NoSuchGroupException { return editorFactory.newEditor(id); } /** * {@inheritDoc} */ @Override @TransactionAttribute(TransactionAttributeType.REQUIRED) public void saveGroup(GroupEditor editor, Errors errors) throws EditException, NoSuchGroupException, GroupAccessException, PassphraseException, MergeConflictException { Validate.isTrue(editor instanceof ConfigurableGroupEditor); ((ConfigurableGroupEditor) editor).save(errors); } }