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Last Updated: Jul 20, 2026
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| Section | Objectives |
|---|---|
| User Interface Development | - Lightning Component Development
|
| Testing, Debugging, and Deployment | - Testing strategies
|
| Advanced Apex Programming and Data Modeling | - Advanced Apex concepts
|
| Integration and Security | - Security implementation
|
1. 以下のコードを参照してください。
Lightning Web コンポーネント JS ファイル
JavaScript
import {LightningElement} from 'lwc';
import serverEcho from '@salesforce/apex/SimpleServerSideController.serverEcho'; export default class Helloworld extends LightningElement { firstName = 'world'; handleClick() { serverEcho({ firstName: this.firstName
})
.then((result) => {
alert('From server: ' + result);
})
.catch((error) => {
console.error(error);
});
}
}
Apex Controller
Java
public with sharing class SimpleServerSideController {
@AuraEnabled
public static String serverEcho(sObject firstName) {
String firstNameStr = (String)firstName.get('firstName');
return ('Hello from the server, ' + firstNameStr);
}
}
上記のコードでは、コードを機能させるために Apex コントローラでどのような 2 つの変更を加える必要がありますか?
A) メソッド シグネチャを public static ではなく global static に変更します。
B) 単一のメソッドではなく、クラス全体に @AuraEnabled としてアノテーションを付けます。
C) Apex コントローラから行 06 を削除し、代わりに行 07 の戻り値で firstName を使用します。
D) Apex コントローラの行 05 の引数を sObject から String に変更します。
2. Apex トリガーと Apex クラスは、ケースが変更されるたびにカウンター `Edit_Count__c` を増分します。
```java
public class CaseTriggerHandler {
public static void handle(List<Case> cases) {
for (Case c : cases) {
c.Edit_Count__c = c.Edit_Count__c + 1;
}
}
}
trigger on Case(before update) {
CaseTriggerHandler.handle(Trigger.new);
}
```
ケースオブジェクトに、ケースの作成または更新時に実行される保存前レコードトリガフローを本番環境に新しく追加しました。このプロセスを追加して以来、ケースの編集時に「Edit_Count__c」が複数回増加しているという報告を受けています。この問題を修正するApexコードはどれでしょうか?
A) ```java
public class CaseTriggerHandler {
public static Boolean firstRun = true;
public static void handle(List<Case> cases) {
for (Case c : cases) {
B) ```java
trigger on Case(before update) {
Boolean firstRun = true;
if (firstRun) {
CaseTriggerHandler.handle(Trigger.newMap);
}
firstRun = false;
}
```
C) ```java
public class CaseTriggerHandler {
Boolean firstRun = true;
public static void handle(List<Case> cases) {
if (firstRun) {
for (Case c : cases) {
D) ```java
public class CaseTriggerHandler {
public static Boolean firstRun = true;
public static void handle(List<Case> cases) {
for (Case c : cases) {
E) Edit_Count__c = c.Edit_Count__c + 1;
}
}
firstRun = false;
}
}
trigger on Case(before update) {
CaseTriggerHandler.handle(Trigger.new);
}
```
F) Edit_Count__c = c.Edit_Count__c + 1;
}
}
}
trigger on Case(before update) {
if (CaseTriggerHandler.firstRun) {
CaseTriggerHandler.handle(Trigger.new);
}
CaseTriggerHandler.firstRun = false;
}
```
G) Edit_Count__c = c.Edit_Count__c + 1;
}
}
}
trigger on Case(before update) {
CaseTriggerHandler.firstRun = true;
if (CaseTriggerHandler.firstRun) {
CaseTriggerHandler.handle(Trigger.newMap);
}
CaseTriggerHandler.firstRun = false;
}
```
3. 開発者は、非同期プロセスを含むトリガーが正常に実行されたことをどのように確認すればよいでしょうか?
A) すべてのテスト データを作成し、テスト クラスで @future を使用して、アサーションを実行します。
B) テスト クラスにすべてのテスト データを作成し、System.runAs() を使用してトリガーを呼び出して、アサーションを実行します。
C) Salesforce にレコードを挿入し、seeAllData=true を使用して、アサーションを実行します。
D) テスト クラスにすべてのテスト データを作成し、Test.startTest() と Test.stopTest() を呼び出してアサーションを実行します。
4. カスタムLightningコンポーネントの一部に、組織内の商談の総数(数百万件単位)が表示されます。LightningコンポーネントはApexメソッドを使用して必要なデータを取得します。開発者がLightningコンポーネントの商談の総数を取得する最適な方法は何でしょうか?
A) Opportunityレコードの数をカウントするApexバッチジョブ
B) SUM() 商談オブジェクトに対するSOQL集計クエリ
C) Opportunitiesレコードの数をカウントするSOQL forループ
D) COUNT() 商談オブジェクトに対するSOQL集計クエリ
5. 非同期 Apex を使用することでのみ実行できるユースケースはどれですか?
A) 数万件のレコードをクエリする
B) 挿入完了後のレコードの更新1
C) ApexトリガーからWebサービスを呼び出す
D) バッチプロセスを将来完了するようにスケジュールするための呼び出しを行う
Solutions:
| Question # 1 Answer: C,D | Question # 2 Answer: G | Question # 3 Answer: D | Question # 4 Answer: D | Question # 5 Answer: C |
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