AtFutureRecipes

AtFutureRecipes Class

Demonstrates the @future syntax and usage

Group Async Apex Recipes

Fields

testCircuitBreaker

TESTVISIBLE

This class features a 'circuit breaker' variable. While this is not a pattern I routinely turn to, it is a valuable pattern for testing code that is otherwise hard to test. For instance, @future methods must be static void methods. This makes it hard to assert against return values. The idea behind this pattern is set a private static class variable to true, only when irreversible conditions or actions have occurred. The circuit breaker 'breaks', giving you something you can assert on. Again this isn't a pattern I often turn to, but it can be valuable in certain circumstances.

Signature

private static testCircuitBreaker

Type

Boolean

Methods

atFutureMethodWithoutCalloutPrivileges(data)

FUTURE

Method demonstrates the @future annotation without the (callout=true) adendum. This method will be run in a different Apex transaction than the calling code.

Signature

public static void atFutureMethodWithoutCalloutPrivileges(String data)

Parameters

Name	Type	Description
data	String	String to be logged

Return Type

void

Example

AtFutureRecipes.atFutureMethodWithoutCalloutPrivileges('Some Data');

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atFutureMethodWithCalloutPrivileges(url)

FUTURE

Method demonstrates how an @future anotated method can make an HTTP Callout. This method also demonstrates the necessary steps to make an HTTP callout without the RestClient abstraction layer.

The RestClient class can be found in the 'Shared Code' group.

Signature

public static void atFutureMethodWithCalloutPrivileges(String url)

Parameters

Name	Type	Description
url	String	The URL to make a callout to.

Return Type

void

Example

AtFutureRecipes.atFutureMethodWithCalloutPrivileges('google.com');