com.power4j.fist.boot.mybaits.util.PageUtil Maven / Gradle / Ivy
/*
* Copyright 2021 ChenJun ([email protected] & https://github.com/John-Chan)
*
* Licensed under the GNU LESSER GENERAL PUBLIC LICENSE 3.0;
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.gnu.org/licenses/lgpl.html
*
* 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.power4j.fist.boot.mybaits.util;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.metadata.OrderItem;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.power4j.fist.boot.web.model.PageParameter;
import com.power4j.fist.data.domain.PageImpl;
import com.power4j.fist.data.domain.PageRequest;
import com.power4j.fist.data.domain.Pageable;
import com.power4j.fist.data.domain.Paged;
import com.power4j.fist.data.domain.Sort;
import lombok.experimental.UtilityClass;
import java.util.List;
import java.util.stream.Collectors;
/**
* @author CJ ([email protected])
* @date 2021/9/22
* @since 1.0
*/
@UtilityClass
public class PageUtil {
// ~ Web
// ===================================================================================================
public Page toPage(PageParameter parameter) {
return new Page<>(parameter.getPageNumber(), parameter.getPageSize());
}
// ~ Domain
// ===================================================================================================
public Page toPage(Pageable pageable) {
Page page = new Page<>(pageable.getPageNumber(), pageable.getPageSize());
pageable.getSort().getOrders().forEach(order -> {
page.addOrder(toOrderItem(order));
});
return page;
}
public Paged toPaged(IPage page) {
return new PageImpl<>(page.getRecords(), toPageRequest(page), page.getTotal());
}
public PageRequest toPageRequest(IPage page) {
List orders = page.orders().stream().map(PageUtil::toOrder).collect(Collectors.toList());
int pageNum = (int) (page.getCurrent());
int size = (int) (page.getSize());
return PageRequest.of(pageNum, size, Sort.of(orders));
}
public OrderItem toOrderItem(Sort.Order order) {
String column = StringUtils.camelToUnderline(order.getProp());
return order.isAsc() ? OrderItem.asc(column) : OrderItem.desc(column);
}
public Sort.Order toOrder(OrderItem item) {
return new Sort.Order(item.getColumn(), item.isAsc() ? Sort.Direction.ASC : Sort.Direction.DESC);
}
}