BatchApexRecipes

BatchApexRecipes

Demonstrates the use of the Database.Batchable interface. The methods in this class are called by the system as the batch executes. To execute this batch use Database.executeBatch(new BatchApexRecipes()); More on the Batchable interface: https://sfdc.co/batch_interface

Implemented types

Database.Batchable<SObject> , Database.Stateful

Group Async Apex Recipes

Fields

private successes → List<Id>

private failures → List<Id>

private queryString → String

private result → String

TESTVISIBLE

private throwError → Boolean

TESTVISIBLE

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Methods

public Database start(Database context)

This method is required by the Batchable interface. It's responsible for identifying the records that will be affected Your start method can either return a QueryLocator or an Iterable (List) The records identified here will be made available to the execute method below, in batches of up to 200 records at a time.

Parameters

Param	Description
context	dependency injected by the system

Returns

Type	Description
Database	Database.QueryLocator QueryLocator object used for context

Example

Database.executeBatch(new BatchApexRecipes());

public void execute(Database context, List<Account> scope)

This method is where the actual work occurs. It's run once per batch.

Parameters

Param	Description
context	dependency injected by the system in this batch. It's this mechanism of breaking a large number of records into smaller batches called scope (in this example) that make this easier.
scope	a list of up to 200 SObject records to be processed

Example

Database.executeBatch(new BatchApexRecipes());

public void finish(Database context)

This method is called by the system when all the individual batches have completed. Intrepid developers may send emails, or otherwise notify others of the job's completion here.

Parameters

Param	Description
context	dependency injected by the system

Example

Database.executeBatch(new BatchApexRecipes());

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