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通常我们会在SOQL查询中获取记录列表，有时我们还需要一组ID或记录ID的映射以及记录或记录ID的列表。上述要求的Apex代码如下：List<id> accIdsList = new List<id>() ;Set<id> accIdsSet = new Set<id>() ;Map<Id,Account> accountIdObjMap = new Map<Id,Account>();List<account> accList = [select...
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Apex 対応付けとリストの参照 動的バインドを使用する Visualforce ページは、マークアップ内の ApexMapおよびListデータ型を参照できます。 たとえば、ApexListが次のように定義されている場合、 publicList<String>people{get{returnnewList<String>{'Winston','Julia','Brien'};}set;}publicList<In...
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Apex Developer Guide/Writing Apex/Working with Data in Apex/sObject Collections/Maps of sObjects Maps of sObjects Map keys and values can be of any data type, including sObject types, such as Account. Maps can hold sObjects both in their keys and values. A map key represents a unique...