Salesforce PDII - Salesforce Certified Platform Developer II (Plat-Dev-301)

<apex:commandLink> and <apex:commandButton> components can cause the form data to be sent to the server and can be configured to refresh specific parts of the page.

<apex:actionSupport> adds AJAX support to other components and can trigger partial page updates based on events such as onclick, onchange, etc.

Using toLabel() in the SOQL query ensures that picklist values are returned in the user’s language, which is necessary for organizations that have the translation workbench enabled.

To test Queueable Apex, Test.startTest() and Test.stopTest() should be used to ensure the asynchronous code is executed before assertions are made. After calling Test.stopTest(), you would then query for the records to assert that the queueable job correctly created the Account records.

A sharing rule can be used to automatically give Read access to a user specified in a lookup field. Sharing rules are declarative and can be based on criteria such as the value of a lookup field. This can be done without writing code and is maintainable through the Salesforce UI.

Since the requirement is to make a callout to an external ERP system when an Account is created and still allow for the Account creation even if the call fails, a Queueable class called from a trigger is the best solution. Queueable Apex allows you to submit jobs for asynchronous processing similar to future methods but with additional benefits such as chaining jobs and monitoring the job status.

By using a Queueable, the callout can be made after the Account is created, which respects the Salesforce order of execution and avoids the limitation of callouts not being allowed after DML operations in the same transaction. This approach also does not block the user interface or the creation of the Account record if the callout to the ERP system takes a long time or fails.

To optimize the code in question, it's important to follow best practices that reduce the number of SOQL queries and DML statements within loops, as these can quickly consume governor limits and lead to inefficiencies. Option C is correct because using a collection to hold records and performing a single DML operation outside of loops reduces the number of DML operations, which is a best practice for bulkifying code in Salesforce. Option D is also correct because querying records outside of a loop prevents hitting SOQL governor limits and makes the code more efficient. Options A and B are not correct in the context provided, as there isn't enough information to determine if changing the trigger context is necessary, and removing the DML statement altogether may not be feasible if the logic requires data to be persisted.

References

Apex Best Practices: Apex Developer Guide Best Practices

To retrieve Tasks that are between 12 and 24 months old, we need to use a SOQL query that filters based on the CreatedDate. The query must exclude deleted records and include both active and archived tasks. Since Tasks can be archived after a certain period (typically 12 months), we must ensure the query includes these as well.

Option C is correct because it uses ALL ROWS in the SOQL query, which includes both active and archived (soft-deleted) records. The query also correctly uses a range for CreatedDate to ensure it selects Tasks created between 12 to 24 months ago.

Option A is incorrect because it does not include the ALL ROWS keyword, which is necessary to include archived Tasks in the results.

Option B is incorrect because it only retrieves Tasks created in the last 12 months, not between 12 to 24 months ago.

Option D is incorrect because it does not filter Tasks based on their creation date correctly to include only those that are between 12 and 24 months old.

In a multi-currency Salesforce organization, displaying currency amounts according to the user's locale is crucial for ensuring data clarity and relevance. To achieve this, developers can leverage Salesforce's built-in capabilities to format field values directly within SOQL queries. The FORMAT() function is particularly useful as it formats currency fields according to the organization's locale settings. By using this function in a SOQL query, developers can ensure that the Amount and LastModifiedDate fields are displayed correctly. This method is more effective and efficient than post-processing the values in Apex, which would be required if using wrapper classes or REGEX expressions. Additionally, using the FOR VIEW clause in a SOQL query will mark records as recently viewed, which does not format the fields as per the user's locale.

If a SOQL query is causing performance issues due to a non-selective query on a large data volume, moving the query to an asynchronous process such as a Batch Apex or Queueable Apex can help resolve the issue. This allows the query to run in the background without affecting the user's experience.