com.wiiyaya.framework.provider.utils.PageableHelper.java Source code

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Here is the source code for com.wiiyaya.framework.provider.utils.PageableHelper.java

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/*
 * Copyright 2016-2017 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 com.wiiyaya.framework.provider.utils;

import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.domain.Sort.Order;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * <p></p>
 *
 * <p>????</p>
 *
 * <p></p>
 *
 * @author wiiyaya
 *
 */
public class PageableHelper {

    public static Pageable mappingAttr(Map<String, String> replaceAttr, Pageable pageRequest) {
        if (pageRequest.getSort() == null || replaceAttr == null || replaceAttr.size() == 0) {
            return pageRequest;
        }
        List<Order> orders = new ArrayList<Order>();

        for (Map.Entry<String, String> entry : replaceAttr.entrySet()) {
            Order ctOrd = pageRequest.getSort().getOrderFor(entry.getKey());
            if (ctOrd != null) {
                ctOrd = new Order(ctOrd.getDirection(), entry.getValue());
                orders.add(ctOrd);
            }
        }
        return new PageRequest(pageRequest.getPageNumber(), pageRequest.getPageSize(), new Sort(orders));
    }

    public static Pageable cloneWithoutOrder(Pageable pageRequest) {
        return new PageRequest(pageRequest.getPageNumber(), pageRequest.getPageSize());
    }

}