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在Apex或VisualForce中合併下面兩個列表的最佳方式是什麼?數據是相關的,但不能一起查詢,所以我需要組合這兩個列表。如何合併Apex或VisualForce(Salesforce)中的兩個列表中的數據?
注意事項:
兩個列表:在additionalInfoQuestionMaps是父表和additionalInfoQuestionAvailableResponses是孩子。可以有一對多的孩子。
我需要加入Question_Type_Info__c對象上的列表。
基本上它的一組從父親列表未來問題的,那麼我就需要能夠回答這些問題,比如是關聯和Nothat駐留在子列表。這些結果將顯示在表單的VF頁面中。
public with sharing class mytest {
public List<Questions__c> additionalInfoQuestionMaps {get;set;}
public List<Available_Question_Answer_Options__c> additionalInfoQuestionAvailableResponses {get;set;}
public List<retrieveMergedQuestionList> retrieveMergedQuestionLists {get;set;}
public String buildId {get;set;}
public Build__c build {get;set;}
public mytest() {
buildId = 'a1DV00000001BBBBBB';
build = sharedfile.getBuild(buildId);
updateAdditionalInfoQuestionMaps();
updateAdditionalInfoFieldValueIds();
updateAdditionalInfoQuestionAvailableResponses();
}
public void updateAdditionalInfoQuestionMaps() {
additionalInfoQuestionMaps = new List<Questions__c>([SELECT Id, Name,
Associated_Product_Item__c,
Associated_Product__c,
Label__c,
(select Response__c from Responses_Object__r),
Question_Type_Info__c,
Required__c
FROM Questions__c
WHERE Associated_Product__c = :build.Associated_Product__c
ORDER BY Sort_Index__c, Label__c]);
}
public Set<Id> additionalInfoFieldValueIds = new Set<Id>();
public void updateAdditionalInfoFieldValueIds(){
for (Questions__c aimb : additionalInfoQuestionMaps) {
additionalInfoFieldValueIds.add(aimb.Question_Type_Info__c);
}
}
public void updateAdditionalInfoQuestionAvailableResponses() {
additionalInfoQuestionAvailableResponses = new List<Available_Question_Answer_Options__c>([select Id,
Field_Value__c, Question_Type_Info__c
from Available_Question_Answer_Options__c
where Question_Type_Info__c IN :additionalInfoFieldValueIds]);
}
}
您的問題很難讓我跟隨。你能指定你想合併到一個列表中的哪兩個列表(請給出確切的變量名稱)? –