如何仅记录在 java 中更新 API 调用期间获得更新的字段

发布于08月27日

我只需要记录那些将在更新API调用期间更新的字段.例如，如果我的表中有10列，但在API调用中只更新了3列，则应该只记录这3个字段.

我试过这样做，但它不能覆盖所有条件，有时还会给出空值.

在这里，我在为更新调用Get和Set函数之前判断现有Employee值是否等于即将到来的有效负载的值，但如果任何值将为空，则抛出错误.

已try 的代码

//existingOrgEmployee is DB mysql entry
// and employeeInfo is coming Request from Api Payload
if (employeeInfo.getEmployeeFirstName() != null) { 
               if(!existingOrgEmployee.getFirstName().equals(employeeInfo.getEmployeeFirstName())){
                    log.info("EmployeeFirstName Updated for Orgemployee  : 
                         "+existingOrgEmployee.getOrgEmployeeId());
                }
                existingOrgEmployee.setFirstName(employee Info.getEmployeeFirstName());
            }

在有效负载中，所有字段都将存在，但只有数据库列中不同或为空的字段将被更改，这就是为什么我在设置函数之前应用了IF条件

这是Service Class内的更新函数

 private void updateExistingEmployee(OrgEmployeeMap existingOrgEmployee, RequestMessage requestMessage) {
        try {
            EmployeeInformation employeeInfo = requestMessage.getData().get(0).getDemographicData().getEmployeeInformation().get(0);

            if (employeeInfo.getEmployeeFirstName() != null) {
               if(!existingOrgEmployee.getFirstName().equals(employeeInfo.getEmployeeFirstName())){
                    log.info("EmployeeFirstName Updated for Orgemployee  : 
                         "+existingOrgEmployee.getOrgEmployeeId());
                }
                existingOrgEmployee.setFirstName(employee Info.getEmployeeFirstName());
            }
            if (employeeInfo.getEmployeeLastName() != null) {

                existingOrgEmployee.setLastName(employeeInfo.getEmployeeLastName());
            }
            if (employeeInfo.getDOB() != null) {

                existingOrgEmployee.setDob(employeeInfo.getDOB());
            }
            if (employeeInfo.getGender() != null) {

                existingOrgEmployee.setGender(employee Info.getGender());
            }
            if (employeeInfo.getEmail() != null) {
                if(!existingOrgEmployee.getEmail().equals(employeeInfo.getEmail())){
                    log.info("Email Updated for Orgemployee  : "+existingOrgEmployee.getEmail());
                }
                existingOrgEmployee.setEmail(employeeInfo.getEmail());
            }

            orgEmployeeMapRepository.save(existingOrgEmployee);

        log.info("Updated Employee : " + existingOrgEmployee);
        } catch (JSONException e) {
            log.error("error in processing the request error", e.getMessage());
        }catch (Exception ex) {
            log.error("An unexpected error occurred: " + ex.getMessage(), ex);
        }

这也不是优化的方法，我如何记录更新的字段？

public static class Updater { private final OrgEmployeeMap existing; private final EmployeeInformation information; private final Set<String> updatedFields = new HashSet<>(); public Updater(OrgEmployeeMap existing, EmployeeInformation information) { this.existing = existing; this.information = information; } public <T> Updater update(String fieldName, Function<EmployeeInformation, T> newValueGetter, Function<OrgEmployeeMap, T> oldValueGetter, BiConsumer<OrgEmployeeMap, T> oldValueSetter) { final var newValue = newValueGetter.apply(information); final var oldValue = oldValueGetter.apply(existing); if (newValue == null || newValue.equals(oldValue)) { return this; } this.updatedFields.add(fieldName); oldValueSetter.accept(existing, newValue); return this; } public Set<String> getUpdatedFields() { return updatedFields; } }

private void updateExistingEmployee(OrgEmployeeMap existingOrgEmployee, RequestMessage requestMessage) { try { EmployeeInformation employeeInfo = requestMessage.getData().get(0).getDemographicData().getEmployeeInformation().get(0); final var updater = new Updater(existingOrgEmployee, employeeInfo); updater .update("FirstName", EmployeeInformation::getEmployeeFirstName, OrgEmployeeMap::getFirstName, OrgEmployeeMap::setFirstName) .update("LastName", EmployeeInformation::getEmployeeLastName, OrgEmployeeMap::getLastName, OrgEmployeeMap::setLastName) .update("DOB", EmployeeInformation::getDOB, OrgEmployeeMap::getDob, OrgEmployeeMap::setDob) .update("Gender", EmployeeInformation::getGender, OrgEmployeeMap::getGender, OrgEmployeeMap::setGender) .update("Email", EmployeeInformation::getEmail, OrgEmployeeMap::getEmail, OrgEmployeeMap::setEmail); final var modifiedFields = updater.getUpdatedFields(); if (!modifiedFields.isEmpty()) { log.info("Updated employee : " + String.join(", ", modifiedFields)); } orgEmployeeMapRepository.save(existingOrgEmployee); log.info("Updated Employee : " + existingOrgEmployee); } catch (JSONException e) { log.error("error in processing the request error", e.getMessage()); } catch (Exception ex) { log.error("An unexpected error occurred: " + ex.getMessage(), ex); } }

如何仅记录在 java 中更新 API 调用期间获得更新的字段

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