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aeben Winter 10 Batch Apex Issue
In sandbox that got upgraded to winter 10.
I am trying to return a Database.QueryLocation from the start method.
The release notes and the documentation for winter 10 clearly says that I can return either iterable or QueryLocator. But, in my code if I say something like
global Database.QueryLocator start(Database.BatchableContext ctx)
{
return Database.getQueryLocator('Some query here');
}
It does not compile.
This is the syntax if you want to use the query locator.
class MyBatchApex implements Database.Batchable<SObject> //Has to be SObject and not a concrete type
{
Database.QueryLocator start(Database.BatchableContext ctx)
{
return Datebase.getQueryLocator('Your query here!!');
}
void execute(Database.BatchableContext ctx, List<SObject> sobjects) //Has to be SObjects
{
//Do the down casting here to a concreate type
}
void finish(Database.BatchableContext ctx)
{
}
}
This compiles and works.
All Answers
Things to double check:
1. api version 17.0
2. verify with support that batch apex is enabled for this environment
Not enough info to help beyond that...
I am not executing it. Its at compile time.
If i change the return type to Iterable it compiles.
I don't want to use Iterbale because of the governence limits.
This is the syntax if you want to use the query locator.
class MyBatchApex implements Database.Batchable<SObject> //Has to be SObject and not a concrete type
{
Database.QueryLocator start(Database.BatchableContext ctx)
{
return Datebase.getQueryLocator('Your query here!!');
}
void execute(Database.BatchableContext ctx, List<SObject> sobjects) //Has to be SObjects
{
//Do the down casting here to a concreate type
}
void finish(Database.BatchableContext ctx)
{
}
}
This compiles and works.