org.modeshape.jcr.query.optimize

Class RewritePseudoColumns

java.lang.Object

org.modeshape.jcr.query.optimize.RewritePseudoColumns

All Implemented Interfaces:

OptimizerRule

@Immutable
public class RewritePseudoColumns
extends Object
implements OptimizerRule

Changes any criteria that writes criteria containing pseudo-columns into standard criteria.

Field Summary

Fields

Modifier and Type	Field and Description
static RewritePseudoColumns	INSTANCE

Constructor Summary

Constructors

Constructor and Description
RewritePseudoColumns()

Method Summary

Modifier and Type	Method and Description
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)
protected List<Constraint>	rewrite(QueryContext context, List<Constraint> constraints)
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, 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)

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 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

rewrite

protected JoinCondition rewrite(QueryContext context,
                                JoinCondition condition)

rewrite

protected List<Constraint> rewrite(QueryContext context,
                                   List<Constraint> constraints)

rewrite

protected Constraint rewrite(QueryContext context,
                             Constraint constraint)

rewrite

protected DynamicOperand rewrite(QueryContext context,
                                 DynamicOperand operand)

toString

public String toString()

Overrides:

toString in class Object