org.modeshape.jcr.query
Class RewritePseudoColumns

java.lang.Object
  extended by org.modeshape.jcr.query.RewritePseudoColumns
All Implemented Interfaces:
OptimizerRule

@Immutable
public class RewritePseudoColumns
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.


Field Summary
static RewritePseudoColumns INSTANCE
           
 
Constructor Summary
RewritePseudoColumns()
           
 
Method Summary
 PlanNode execute(QueryContext context, PlanNode plan, LinkedList<OptimizerRule> ruleStack)
          Optimize the supplied plan using the supplied context, hints, and yet-to-be-run rules.
protected  Constraint rewrite(QueryContext context, Constraint constraint)
           
protected  DynamicOperand rewrite(QueryContext context, DynamicOperand operand)
           
protected  JoinCondition rewrite(QueryContext context, JoinCondition condition)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

INSTANCE

public static final RewritePseudoColumns INSTANCE
Constructor Detail

RewritePseudoColumns

public RewritePseudoColumns()
Method Detail

execute

public PlanNode execute(QueryContext context,
                        PlanNode plan,
                        LinkedList<OptimizerRule> ruleStack)
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 null
plan - the plan to be optimized; never null
ruleStack - the stack of rules that will be run after this rule; never null
Returns:
the optimized plan; never null
See Also:
OptimizerRule.execute(org.modeshape.graph.query.QueryContext, org.modeshape.graph.query.plan.PlanNode, java.util.LinkedList)

rewrite

protected JoinCondition rewrite(QueryContext context,
                                JoinCondition condition)

rewrite

protected Constraint rewrite(QueryContext context,
                             Constraint constraint)

rewrite

protected DynamicOperand rewrite(QueryContext context,
                                 DynamicOperand operand)


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