org.modeshape.graph.query.optimize
Class RightOuterToLeftOuterJoins
java.lang.Object
org.modeshape.graph.query.optimize.RightOuterToLeftOuterJoins
- All Implemented Interfaces:
- OptimizerRule
@Immutable
public class RightOuterToLeftOuterJoins
- extends Object
- implements OptimizerRule
An optimizer rule
that converts right outer joins
into
left outer joins
.
INSTANCE
public static final RightOuterToLeftOuterJoins INSTANCE
RightOuterToLeftOuterJoins
public RightOuterToLeftOuterJoins()
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 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
- See Also:
OptimizerRule.execute(org.modeshape.graph.query.QueryContext,
org.modeshape.graph.query.plan.PlanNode, java.util.LinkedList)
toString
public String toString()
-
- Overrides:
toString
in class Object
- See Also:
Object.toString()
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