import com.gitee.fastmybatis.core.mapper.CrudMapper;
import com.gitee.fastmybatis.core.query.Query;
import com.gitee.fastmybatis.core.support.PageEasyui;
import com.gitee.fastmybatis.core.util.MapperUtil;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import java.util.Collections;
import java.util.List;
import java.util.function.Supplier;
import java.util.stream.Collectors;
/**
 * service基类
 * @author tanghc
 */
public abstract class BaseService<E, Mapper extends CrudMapper<E, Long>> {
 
 @Autowired
 private Mapper mapper;
 public Mapper getMapper() {
 return mapper;
 }
 public PageEasyui<E> page(Query query) {
 return MapperUtil.queryForEasyuiDatagrid(mapper, query);
 }
 public <T> PageEasyui<T> page(Query query, Class<T> clazz) {
 return MapperUtil.queryForEasyuiDatagrid(mapper, query, clazz);
 }
 public List<E> listAll() {
 return listAll(new Query());
 }
 public List<E> listAll(Query query) {
 return mapper.list(query.setQueryAll(true));
 }
 public <R> List<R> listAll(Supplier<R> supplier) {
 List<E> list = mapper.list(new Query().setQueryAll(true));
 if (list == null || list.isEmpty()) {
 return Collections.emptyList();
 }
 return list.stream()
 .map(source -> {
 R target = supplier.get();
 BeanUtils.copyProperties(source, target);
 return target;
 })
 .collect(Collectors.toList());
 }
 public List<E> list(Query query) {
 return mapper.list(query);
 }
 public List<E> list(String column, Object value) {
 return mapper.listByColumn(column, value);
 }
 public E get(Query query) {
 return mapper.getByQuery(query);
 }
 public E get(String column, Object value) {
 return mapper.getByColumn(column, value);
 }
 /**
 * 根据主键查询
 *
 * @param id 主键
 * @return 返回记录,没有返回null
 */
 public E getById(Long id) {
 return mapper.getById(id);
 }
 /**
 * 新增,忽略null字段
 *
 * @param entity 新增的记录
 * @return 返回影响行数
 */
 public int save(E entity) {
 return mapper.saveIgnoreNull(entity);
 }
 /**
 * 批量添加
 * @param entityList 添加对象
 * @return 返回影响行数
 */
 public int saveBatch(List<E> entityList) {
 return mapper.saveBatch(entityList);
 }
 /**
 * 修改,忽略null字段
 *
 * @param entity 修改的记录
 * @return 返回影响行数
 */
 public int update(E entity) {
 return mapper.updateIgnoreNull(entity);
 }
 /**
 * 删除记录
 *
 * @param entity 待删除的记录
 * @return 返回影响行数
 */
 public int delete(E entity) {
 return mapper.delete(entity);
 }
}