package org.xmx0632.deliciousfruit.service;
import java.util.List;
import java.util.Map;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Sort;
import org.springframework.data.domain.Sort.Direction;
import org.springframework.data.jpa.domain.Specification;
import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Transactional;
import org.springside.modules.persistence.DynamicSpecifications;
import org.springside.modules.persistence.SearchFilter;
import org.xmx0632.deliciousfruit.entity.FruitStoryMenu;
import org.xmx0632.deliciousfruit.repository.FruitStoryMenuDao;
//Spring Bean的标识.
@Component
// 默认将类中的所有public函数纳入事务管理.
@Transactional(readOnly = true)
public class FruitStoryMenuService {
private static Logger log = LoggerFactory
.getLogger(FruitStoryMenuService.class);
private FruitStoryMenuDao fruitStoryMenuDao;
public FruitStoryMenu getFruitStoryMenu(Long id) {
return fruitStoryMenuDao.findOne(id);
}
public List<FruitStoryMenu> getAllFruitStoryMenu() {
return (List<FruitStoryMenu>) fruitStoryMenuDao.findAll();
}
@Transactional(readOnly = false)
public void saveFruitStoryMenu(FruitStoryMenu entity) {
fruitStoryMenuDao.save(entity);
}
@Transactional(readOnly = false)
public void deleteFruitStoryMenu(Long id) {
fruitStoryMenuDao.delete(id);
}
public Page<FruitStoryMenu> getFruitStoryMenus(
Map<String, Object> filterParams, int pageNumber, int pageSize,
String sortType) {
PageRequest pageRequest = buildPageRequest(pageNumber, pageSize,
sortType);
Specification<FruitStoryMenu> spec = buildSpecification(filterParams);
return fruitStoryMenuDao.findAll(spec, pageRequest);
}
public List<FruitStoryMenu> getFruitStoryMenus(
Map<String, Object> filterParams) {
Specification<FruitStoryMenu> spec = buildSpecification(filterParams);
return fruitStoryMenuDao.findAll(spec);
}
/**
* 创建分页请求.
*/
private PageRequest buildPageRequest(int pageNumber, int pagzSize,
String sortType) {
Sort sort = null;
if ("auto".equals(sortType)) {
sort = new Sort(Direction.DESC, "id");
}
/*
* else if ("title".equals(sortType)) { sort = new Sort(Direction.ASC,
* "title"); }
*/
return new PageRequest(pageNumber - 1, pagzSize, sort);
}
/**
* 创建动态查询条件组合.
*/
private Specification<FruitStoryMenu> buildSpecification(
Map<String, Object> filterParams) {
Map<String, SearchFilter> filters = SearchFilter.parse(filterParams);
// filters.put("user.id", new SearchFilter("user.id", Operator.EQ,
// userId));
Specification<FruitStoryMenu> spec = DynamicSpecifications
.bySearchFilter(filters.values(), FruitStoryMenu.class);
return spec;
}
// -----------------//
// Setter methods //
// -----------------//
@Autowired(required = true)
public void setFruitStoryMenuDao(FruitStoryMenuDao fruitStoryMenuDao) {
this.fruitStoryMenuDao = fruitStoryMenuDao;
}
}