Java tutorial
/* * 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 com.wms.studio.service; import java.util.ArrayList; import java.util.Date; import java.util.List; import javax.persistence.criteria.CriteriaBuilder; import javax.persistence.criteria.CriteriaQuery; import javax.persistence.criteria.Predicate; import javax.persistence.criteria.Root; import org.apache.commons.lang3.builder.ToStringBuilder; import org.apache.log4j.Logger; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.data.domain.Page; import org.springframework.data.domain.PageRequest; import org.springframework.data.jpa.domain.Specification; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Propagation; import org.springframework.transaction.annotation.Transactional; import com.wms.studio.annotations.HandlerPoint; import com.wms.studio.api.constant.UserConstant; import com.wms.studio.api.constant.WallpaperEnum; import com.wms.studio.api.dto.CommonResponseDto; import com.wms.studio.api.dto.PageDto; import com.wms.studio.api.dto.WallpaperDto; import com.wms.studio.api.dto.page.PageSize; import com.wms.studio.api.service.WallpaperService; import com.wms.studio.api.utils.StringUtils; import com.wms.studio.covert.EntityConvertInterface; import com.wms.studio.entity.User; import com.wms.studio.entity.Wallpaper; import com.wms.studio.exception.VerificationException; import com.wms.studio.repository.UserRepository; import com.wms.studio.repository.WallpaperRepository; /** * * @author WMS * */ @Service("wallpaperService") public class WallpaperServiveImpl implements WallpaperService { private static final Logger log = Logger.getLogger(WallpaperServiveImpl.class); @Autowired private WallpaperRepository wallpaperRepository; @Autowired private UserRepository userRepository; @Autowired @Qualifier("wallpaperCovert") private EntityConvertInterface<Wallpaper, WallpaperDto> wallpaperCovert; public void setWallpaperCovert(EntityConvertInterface<Wallpaper, WallpaperDto> wallpaperCovert) { this.wallpaperCovert = wallpaperCovert; } public void setWallpaperRepository(WallpaperRepository wallpaperRepository) { this.wallpaperRepository = wallpaperRepository; } public void setUserRepository(UserRepository userRepository) { this.userRepository = userRepository; } @Override @Transactional @HandlerPoint(handlerName = "wallpaperAddHandler") public CommonResponseDto addWallpaper(WallpaperDto wallpaperDto) { CommonResponseDto responseDto = new CommonResponseDto(UserConstant.ERROR); try { Wallpaper wallpaper = wallpaperCovert.covertToEntity(wallpaperDto); if (wallpaper == null) { log.error("?Wallpaper??"); throw new VerificationException("?"); } if (StringUtils.isBlank(wallpaper.getPath()) || wallpaper.getUser() == null || StringUtils.isBlank(wallpaper.getUser().getId()) || wallpaper.getWallpaperType() == null) { log.error("??:" + ToStringBuilder.reflectionToString(wallpaper)); throw new VerificationException("?"); } if (this.userRepository.exists(wallpaper.getUser().getId())) { this.wallpaperRepository.save(wallpaper); responseDto.setResult(UserConstant.SUCCESS); } else { log.fatal("??." + ToStringBuilder.reflectionToString(wallpaper)); throw new VerificationException("?"); } } catch (VerificationException e) { responseDto.setErrorMessage(e.getMessage()); } return responseDto; } @Override @Transactional public CommonResponseDto deleteWallpaper(Integer id) { CommonResponseDto responseDto = new CommonResponseDto(UserConstant.ERROR); try { if (id == null) { log.error("?ID??"); throw new VerificationException("?"); } if (this.wallpaperRepository.exists(id)) { this.wallpaperRepository.delete(id); responseDto.setResult(UserConstant.SUCCESS); } else { log.fatal("?ID?."); throw new VerificationException("?"); } } catch (VerificationException e) { responseDto.setErrorMessage(e.getMessage()); } return responseDto; } @Override @Transactional(propagation = Propagation.NOT_SUPPORTED, readOnly = true) public PageDto<WallpaperDto> findBy(final WallpaperEnum wallpaperType, final Date startDate, final Date endDate, PageSize pageSize) { if (pageSize == null) { pageSize = new PageSize(); } Page<Wallpaper> pageWallpaper = this.wallpaperRepository.findAll(new Specification<Wallpaper>() { @Override public Predicate toPredicate(Root<Wallpaper> root, CriteriaQuery<?> query, CriteriaBuilder cb) { List<Predicate> pres = new ArrayList<Predicate>(); if (wallpaperType != null) { pres.add(cb.equal(root.get("wallpaperType").as(WallpaperEnum.class), wallpaperType)); } if (startDate != null) { pres.add(cb.greaterThanOrEqualTo(root.get("addDate").as(Date.class), startDate)); } if (endDate != null) { pres.add(cb.lessThanOrEqualTo(root.get("addDate").as(Date.class), endDate)); } Predicate[] p = new Predicate[pres.size()]; return cb.and(pres.toArray(p)); } }, new PageRequest(pageSize.getPage() - 1, pageSize.getLimit())); return this.wallpaperCovert.covertToDto(pageWallpaper); } @Override @Transactional(propagation = Propagation.NOT_SUPPORTED, readOnly = true) public PageDto<WallpaperDto> findByUser(String userId, PageSize pageSize) { if (StringUtils.isBlank(userId)) { return PageDto.EMPTY_PAGE(); } if (pageSize == null) { pageSize = new PageSize(); } return this.wallpaperCovert.covertToDto(this.wallpaperRepository.findByUser(new User(userId), new PageRequest(pageSize.getPage() - 1, pageSize.getLimit()))); } @Override @Transactional(propagation = Propagation.NOT_SUPPORTED, readOnly = true) public PageDto<WallpaperDto> listWallpapers(PageSize pageSize) { if (pageSize == null) { pageSize = new PageSize(); } return this.wallpaperCovert.covertToDto( wallpaperRepository.findAll(new PageRequest(pageSize.getPage() - 1, pageSize.getLimit()))); } }