org.modeshape.jcr.query.optimize
Class RaiseVariableName
java.lang.Object
org.modeshape.jcr.query.optimize.RaiseVariableName
- All Implemented Interfaces:
- OptimizerRule
@Immutable
public class RaiseVariableName
- extends Object
- implements OptimizerRule
An optimizer rule
that moves up higher in the plan any variable name
property to the node immediately under a dependent query
node.
INSTANCE
public static final RaiseVariableName INSTANCE
RaiseVariableName
public RaiseVariableName()
execute
public PlanNode execute(QueryContext context,
PlanNode plan,
LinkedList<OptimizerRule> ruleStack)
- Description copied from interface:
OptimizerRule
- Optimize the supplied plan using the supplied context, hints, and yet-to-be-run rules.
- Specified by:
execute
in interface OptimizerRule
- Parameters:
context
- the context in which the query is being optimized; never nullplan
- the plan to be optimized; never nullruleStack
- the stack of rules that will be run after this rule; never null
- Returns:
- the optimized plan; never null
raiseVariableName
protected void raiseVariableName(PlanNode node)
removeVariableName
protected String removeVariableName(PlanNode node)
toString
public String toString()
- Overrides:
toString
in class Object
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