Package com.apple.foundationdb.record.query.plan.temp.debug

Stub for planner debugger

Interface Summary

Interface	Description
Debugger	This interface functions as a stub providing hooks which can be called from the planner logic during planning.
Debugger.Event	Tag interface for all events.
Debugger.EventWithCurrentGroupReference	Interface for events that hold a group ref.
Debugger.EventWithState	Interface for events that hold a root reference.

Class Summary

Class	Description
Debugger.AbstractEventWithState	Abstract event class to capture rootReference amd taskStack.
Debugger.AdjustMatchEvent	Events of this class are generated when the planner attempts to adjust an existing match.
Debugger.ExecutingTaskEvent	Events of this class are generated every time the planner executes a task.
Debugger.ExploreExpressionEvent	Events of this class are generated when the planner explores an expression.
Debugger.ExploreGroupEvent	Events of this class are generated when the planner explores a group.
Debugger.OptimizeGroupEvent	Events of this class are generated when the planner optimizes a group.
Debugger.OptimizeInputsEvent	Events of this class are generated when the planner optimizes inputs.
Debugger.TransformEvent	Events of this class are generated when the planner transforms an expression using a rule.
Debugger.TransformRuleCallEvent	Events of this class are generated when the planner calls a transformation rule.

Enum Summary

Enum	Description
Debugger.Location	Enum to indicate where an event happened.
Debugger.Shorthand	Shorthands to identify a kind of event.

Exception Summary

Exception	Description
RestartException	Tag-exception that is specifically thrown by implementations of Debugger to signal the planner to restart planning.