getLastHourRecords.java

/**
 * Method to retrieve records created within the last hour
 * @param objectName The API name of the Salesforce object to query
 * @return List of sObjects created in the last hour
 */
public static List<SObject> getLastHourRecords(String objectName) {
    // Calculate the time one hour ago
    DateTime oneHourAgo = DateTime.now().addHours(-1);
    
    // Build the dynamic SOQL query
    String query = 'SELECT Id, Name, CreatedDate FROM ' + objectName + 
                   ' WHERE CreatedDate >= :oneHourAgo ORDER BY CreatedDate DESC';
    
    try {
        // Execute the query
        List<SObject> lastHourRecords = Database.query(query);
        System.debug('Found ' + lastHourRecords.size() + ' records created in the last hour');
        return lastHourRecords;
    } catch (Exception e) {
        System.debug('Error querying ' + objectName + ': ' + e.getMessage());
        throw e;
    }
}

// Example usage for Account object
public static void fetchLastHourAccounts() {
    List<Account> recentAccounts = (List<Account>)getLastHourRecords('Account');
    
    // Process the accounts
    for(Account acc : recentAccounts) {
        System.debug('Recent Account: ' + acc.Name + ' - Created: ' + acc.CreatedDate);
        // Do something with each account
    }
}

// Alternative approach for a specific object using SOQL directly
public static List<Contact> getLastHourContacts() {
    DateTime oneHourAgo = DateTime.now().addHours(-1);
    
    return [SELECT Id, FirstName, LastName, Email, CreatedDate 
            FROM Contact 
            WHERE CreatedDate >= :oneHourAgo 
            ORDER BY CreatedDate DESC];
}