Force.com Apex Code Developer's Guide
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Batchable Interface
The class that implements this interface can be executed
as a batch Apex job.
Namespace
Batchable Methods
The following are methods for Batchable.
execute(Database.BatchableContext, List<sObject>)
Gets invoked when the batch job executes and operates on
one batch of records. Contains or calls the main execution logic for
the batch job.
Signature
public Void execute(Database.BatchableContext context, List<sObject> scope)
Parameters
- context
- Type: Database.BatchableContext
- Contains the job ID.
- scope
- Type: List<sObject>
- Contains the batch of records to process.
Return Value
Type: Void
finish(Database.BatchableContext)
Gets invoked when the batch job finishes. Place any clean
up code in this method.
Signature
public Void finish(Database.BatchableContext context)
Parameters
- context
- Type: Database.BatchableContext
- Contains the job ID.
Return Value
Type: Void
start(Database.BatchableContext)
Gets invoked when the batch job starts. Returns the record
set as an iterable that will be batched for execution.
Signature
public System.Iterable start(Database.BatchableContext context)
Parameters
- context
- Type: Database.BatchableContext
- Contains the job ID.
Return Value
Type: System.Iterable
start(Database.BatchableContext)
Gets invoked when the batch job starts. Returns the record
set as a QueryLocator object that will be batched for execution.
Signature
public Database.QueryLocator start(Database.BatchableContext context)
Parameters
- context
- Type: Database.BatchableContext
- Contains the job ID.
Return Value
Type: Database.QueryLocator