[DERBY-6259] Collapse the level 2 optimizer into its parent module.

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 10.11.1.1
• Fix Version/s: 10.11.1.1
• Component/s: SQL
• Urgency: Normal
• Assignee: Richard N. Hillegas
• Reporter: Richard N. Hillegas
• Created: 12/Jun/13 19:29
• Updated: 14/Jun/13 18:20
• Resolved: 14/Jun/13 18:20

Description

Right now there are 2 optimizer implementations, only one of which is ever loaded. The other implementation was disabled by the following comment in modules.properties:

1. use level1 optimizer for small configurations
   #
2. can't do this in the codeline because with 2 implementations, it is entirely
3. by chance which get picked. So we may be running with different modules
4. depending on which jdk
   #
5. to be resolve by Siuling and Dan
   #
   #derby.module.optimizerSmall=org.apache.derby.impl.sql.compile.OptimizerFactoryImpl
   #cloudscape.config.optimizerSmall=cloud,cloudtarget

Since we have deprecated support for the small CDC configuration, I don't think that we need further resolution by Siuling and Dan. Collapsing the two optimizers together should slightly reduce our static footprint.

Issue Links

• is related to: DERBY-6260 Move the addScopedPredicatesToList() method to the Optimizer interface