Java tutorial
/** * Copyright 2014 the original author or authors. * * 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.inren.service.blogpost; import java.util.ArrayList; import java.util.List; import javax.annotation.Resource; import org.apache.commons.collections.CollectionUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import de.inren.data.domain.blogpost.BlogPost; import de.inren.data.domain.comment.Comment; import de.inren.data.repositories.blogpost.BlogPostRepository; import de.inren.data.repositories.comment.CommentRepository; import de.inren.service.security.RoleService; @Service(value = "blogPostService") @Transactional(readOnly = true) public class BlogPostServiceImpl implements BlogPostService { private final static Logger log = LoggerFactory.getLogger(BlogPostServiceImpl.class); private boolean initDone = false; @Resource private RoleService roleService; @Resource private BlogPostRepository blogPostRepository; @Override public void init() { if (!initDone) { log.info("BlogPostService init start."); roleService.init(); initDone = true; log.info("BlogPostService init done."); } } @Override public List<BlogPost> loadAllBlogPosts() { List<BlogPost> res = new ArrayList<BlogPost>(); CollectionUtils.addAll(res, blogPostRepository.findAll().iterator()); return res; } @Override public BlogPost save(BlogPost blogPost) { return blogPostRepository.save(blogPost); } @Override public BlogPost load(Long id) { return blogPostRepository.findOne(id); } }