我有这样的疑问：

@Query(value =
    "select distinct t from TimesheetReport t "
    + "where t.month = :month and t.year = :year and t.approvedByMaster = false "
    + "and (:#{#rule.employee} is null or :#{#rule.employee.id} is null "
        + "or t.account.id = :#{#rule.employee.id}) "
    + "and t.id in "
    + "(select distinct dt.timesheetReport.id from DailyTime dt "
    + "where (:#{#rule.project} is null or :#{#rule.project.id} is null "
        + "or dt.project.id = :#{#rule.project.id}) "
    + "and (:#{#rule.client} is null or :#{#rule.client.id} is null "
        + "or dt.client.id = :#{#rule.client.id})) "
    + "or t.id in "
    + "(select distinct cdt.timesheetReport.id from CustomDailyTime cdt "
    + "where (:#{#rule.project} is null or :#{#rule.project.id} is null "
        + "or cdt.project.id = :#{#rule.project.id}) "
    + "and (:#{#rule.client} is null or :#{#rule.client.id} is null "
        + "or cdt.client.id = :#{#rule.client.id}) "
    + ")"
)
Set<TimesheetReport> findTimesheetsMatchingManualApprovalRule(LeaderManualApprovalRulesDTO rule, int month, int year);

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我知道这是由employee对象为null引起的。
尽管首先检查规则中的雇员是否为空，然后检查雇员对象ID字段是否为空，但仍会发生这种情况。我仍然得到“Property or field 'id' cannot be found on null"。
这是因为SpEL需要能够在触发查询之前评估每个参数吗？