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我在一个项目上遇到了麻烦，我正在向社区寻求帮助。

我会先说我对 ColdFusion 不是很熟悉（我在 12 年前搞砸了一点，我知道它从那时起就开始发展了）而且我对 Coldbox 或 Hibernate 一点也不熟悉。

我有一个 Coldbox 处理程序（如下所示），它从数据库中提取事件实体列表并以 JSON 格式返回。目前，这工作正常（问题区域之外的一切）。但是，我们现在需要通过另一个表过滤事件列表，称为 Quantifications。基本上，我需要匹配所有事件，a) 具有与之相关的量化和 b) 至少有一个量化的状态为“活动”。

我有一些合乎逻辑的方法来处理这个问题。第一个（也是不理想的）是简单地抓取我的所有结果，然后在一组循环中过滤它们。但是，这很昂贵并且会干扰分页，所以我放弃了这个想法。

第二个是在 Quantifications 表上进行连接，返回所有活动的量化和与其对应的事件。但是，我遇到了重复项，而 ColdboxresultTransformer似乎实际上并没有工作——DISTINCT_ROOT_ENTITY没有返回不同的实体。（我也严重缺乏代码引用，而且我没有办法轻松地单步执行代码。）

我的最终想法是 - 对于每个事件，对与事件关联的 Quantifications 表执行一个子查询，然后计算有多少是活动的。如果计数为正，则返回事件。

如何使用 Coldbox 和 Hibernate 进行这项工作？我知道我想做什么（以及如何从逻辑上解决问题），但是我对如何在这个系统中使用这些工具和这种语法几乎没有什么想法，不幸的是我几乎没有时间去弄清楚它出去。谢谢！

<cfscript>
component extends="handlers._jsonApi" {

    property name='statusService' inject='entityService:EventStatus';
    property name='departmentService' inject='entityService:Department';
    property name='myEventService' inject='id:myEventService';
    property name='quantificationService' inject='entityService:Quantification';

    ///api/v1/events?departmentId=[XXX]&date=[2013-08-02]&showEventsWithoutQuantifications[false|true]
    function index(event,rc,prc){

        var myEventCriteria = myEventService.newCriteria();

        //if a date is passed, display events occuring that date
        if (StructKeyExists(rc, "date")){
            if (isDate(rc.date)){
                var date = createODBCDateTime(rc.date);
            } else {
                addMessage("The date passed (#rc.date#) is invalid. The date must be in the following format: YYYY-MM-DD.", "error");
                return;
            }

        } else {//else display events occurring today

            var date = createODBCDateTime(now());

        }

        myEventCriteria.le("startDate", date);
        myEventCriteria.ge("endDate", date);

        //if a department id is passed, restrict events to that department
        if (( StructKeyExists(rc, "departmentId")) AND (len(rc.departmentId))){

            var departmentId = rc.departmentId;
            var department = departmentService.findWhere(entityName="Department", criteria={departmentId=departmentId});

            if (isNull(department)){
                addMessage("'#rc.departmentId#' is not a valid departmentId.", "error");
                return;         
            }

            myEventCriteria.isEq("department", department);
        }

        var showEventsWithoutQuantifications = false;
        if (StructKeyExists(rc, "showEventsWithoutQuantifications")){
            if (rc.showEventsWithoutQuantifications)    showEventsWithoutQuantifications = true;
        }

        if (NOT showEventsWithoutQuantifications){
            myEventCriteria.isNotEmpty('quantifications');
        }

/* PROBLEM AREA */
        // Filter events to only include those that have approved quantifications.
        var statusId = 150;
        var status = statusService.findWhere(entityName="EventStatus", criteria={eventStatusOrder=statusId});

        myEventCriteria.createAlias("quantifications", "qt").isEq("qt.status", status);
        myEventCriteria.withProjections(countDistinct="eventID");

        myEventCriteria.resultTransformer( myEventCriteria.DISTINCT_ROOT_ENTITY );

/* // PROBLEM AREA */

        var recordCount = myEventCriteria.count();

        //the order needs to be set after the count is retrieved, or it returns an error
        //myEventCriteria.order('startDate', 'asc');
        myEventCriteria.order('eventID', 'asc');

        var pageSize = getSetting("defaultPageSize");
        if (StructKeyExists(rc, "pageSize") AND Len(rc.pageSize))   pageSize = rc.pageSize;

        myEventCriteria.maxResults(pageSize);

        if (recordCount GT pageSize){

            var firstResult = 0;
            var pageNumber = 1;
            var pageCount = Ceiling(recordCount / pageSize);
            if (StructKeyExists(rc, "pageNumber") AND Len(rc.pageNumber)){
                pageNumber = rc.pageNumber;
                if (pageNumber LT 0 OR pageNumber GT pageCount){
                    addMessage("The pageNumber must be between 1 and #pageCount#", "error");
                    return;
                }

                firstResult = (pageNumber - 1) * pageSize;
                myEventCriteria.firstResult(firstResult);
            }

            var paging = StructNew();
            paging['pageSize'] = pageSize;
            paging['pageNumber'] = pageNumber;
            paging['pageCount'] = pageCount;
            paging['recordCount'] = recordCount;

            prc.response['paging'] = paging;
        }

        prc.response['events'] = objectsToStructs(myEventCriteria.list(), "eventID,eventName,eventCity,eventState,eventVenue,startDate,endDate,justfication,department.departmentID,department.departmentName,country.countryID,country.countryCode,country.countryName,country.countryRegion,signInSummary.signInSummaryID,signInSummary.signInSummary,serviceType.serviceTypeID,serviceType.serviceTypeName" );

    }//end index


}//end component

</cfscript>
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