qt.afl.after.sales/src/main/java/com/qtzl/alterSales/manager/handler/AflPlateChangeQueryHandler.java

package com.qtzl.alterSales.manager.handler;

import cn.com.taiji.common.manager.net.http.ServiceHandleException;
import com.google.common.collect.Lists;
import com.qtzl.alterSales.dao.entity.second.AflPlateChange;
import com.qtzl.alterSales.dao.repo.jpa.second.AflPlateChangeRepo;
import com.qtzl.alterSales.manager.abstracts.AbstractAfterSalesManager;
import com.qtzl.alterSales.manager.model.protocol.UcServiceError;
import com.qtzl.alterSales.manager.model.protocol.sales.AflPlateChangeQueryRequest;
import com.qtzl.alterSales.manager.model.protocol.sales.AflPlateChangeQueryResponse;
import com.qtzl.alterSales.manager.service.AfterSalesCmd;
import com.txffp.api.core.manager.comm.annotation.ApiHandler;
import org.apache.commons.lang3.StringUtils;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Sort;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import javax.persistence.criteria.Predicate;
import java.util.ArrayList;
import java.util.List;

@Service
@ApiHandler
public class AflPlateChangeQueryHandler extends AbstractAfterSalesManager<AflPlateChangeQueryRequest> {


    @Resource
    AflPlateChangeRepo aflPlateChangeRepo;

    public AflPlateChangeQueryHandler() {
        super(AfterSalesCmd.PLATECHANGEQUERY, AflPlateChangeQueryRequest.class);
    }

    @Override
    public String handleInternal(String filename, AflPlateChangeQueryRequest request) throws Exception {
        try {
            Page<AflPlateChange> page = select(request);
            return toResponse(page, request).toJson();
        } catch (Exception e) {
            if (e instanceof ServiceHandleException) {
                throw e;
            }
            logger.error("选装-车辆变更信息查询失败：{}", e.getMessage());
            throw UcServiceError.BUSINESS_VALIDATE_ERR.toHandleException("车辆变更信息查询失败");
        }
    }

    private AflPlateChangeQueryResponse toResponse(Page<AflPlateChange> page, AflPlateChangeQueryRequest request) {
        final AflPlateChangeQueryResponse response = new AflPlateChangeQueryResponse();
        response.setCurrentPage(request.getPageNo());
        response.setPageSize(request.getPageSize());
        response.setPageCount(page.getTotalPages());
        response.setTotalCount(page.getTotalElements());
        if (isEmpty(page.getContent())) {
            response.setData(Lists.newArrayList());
            return response;
        }
        List<AflPlateChange> formVoList = new ArrayList<>(page.getContent());
        response.setData(formVoList);
        return response;
    }

    private Page<AflPlateChange> select(AflPlateChangeQueryRequest request) throws ServiceHandleException {
        if (request.getPageSize() > 100) {
            throw UcServiceError.BUSINESS_VALIDATE_ERR.toHandleException("请求每页数量过大  " + request.getPageSize());
        }
        return aflPlateChangeRepo.findAll(((root, query, cb) -> {
            List<Predicate> list = Lists.newArrayList();

            if (!StringUtils.isEmpty(request.getPlateNum())) {
                list.add(cb.equal(root.get("plateNum"), request.getPlateNum()));
            }
            if (request.getPlateColor() != null) {
                list.add(cb.equal(root.<Integer>get("plateColor"), request.getPlateColor()));
            }
            if (request.getAgentId() != null) {
                list.add(cb.equal(root.<Integer>get("agentId"), request.getAgentId()));
            }

            if (request.getAfterPlateNum() != null) {
                list.add(cb.equal(root.<Integer>get("afterPlateNum"), request.getAfterPlateNum()));
            }
            if (request.getAfterPlateColor() != null) {
                list.add(cb.equal(root.<Integer>get("afterPlateColor"), request.getAfterPlateColor()));
            }
            Predicate[] p = new Predicate[list.size()];
            return cb.and(list.toArray(p));
        }), PageRequest.of(request.getPageNo() - 1, request.getPageSize(),
                Sort.by(Sort.Direction.DESC, "insertTime")));
    }
}