Uses of Class
org.apache.pig.newplan.PlanWalker

Packages that use PlanWalker

Package	Description
org.apache.pig.newplan
org.apache.pig.newplan.logical.expression
org.apache.pig.newplan.logical.optimizer
org.apache.pig.newplan.logical.relational
org.apache.pig.newplan.logical.visitor
org.apache.pig.pen.util

Uses of PlanWalker in org.apache.pig.newplan

Subclasses of PlanWalker in org.apache.pig.newplan

Modifier and Type	Class and Description
class	DependencyOrderWalker A walker to walk graphs in dependency order.
class	DepthFirstWalker Do a depth first traversal of the graph.
class	ReverseDependencyOrderWalker Visit a plan in the reverse of the dependency order.
class	ReverseDependencyOrderWalkerWOSeenChk Visit a plan in the reverse of the dependency order.
class	SubtreeDependencyOrderWalker

Fields in org.apache.pig.newplan declared as PlanWalker

Modifier and Type	Field and Description
protected PlanWalker	PlanVisitor.currentWalker Guaranteed to always point to the walker currently being used.

Methods in org.apache.pig.newplan that return PlanWalker

Modifier and Type	Method and Description
PlanWalker	ReverseDependencyOrderWalkerWOSeenChk.spawnChildWalker(OperatorPlan plan)
PlanWalker	ReverseDependencyOrderWalker.spawnChildWalker(OperatorPlan plan)
abstract PlanWalker	PlanWalker.spawnChildWalker(OperatorPlan plan) Return a new instance of this same type of walker for a subplan.
PlanWalker	DepthFirstWalker.spawnChildWalker(OperatorPlan plan)
PlanWalker	DependencyOrderWalker.spawnChildWalker(OperatorPlan plan)

Methods in org.apache.pig.newplan with parameters of type PlanWalker

Modifier and Type	Method and Description
protected void	PlanVisitor.pushWalker(PlanWalker walker) Push the current walker onto the stack of saved walkers and begin using the newly passed walker as the current walker.

Constructors in org.apache.pig.newplan with parameters of type PlanWalker

Constructor and Description
PlanVisitor(OperatorPlan plan, PlanWalker walker)

Uses of PlanWalker in org.apache.pig.newplan.logical.expression

Constructors in org.apache.pig.newplan.logical.expression with parameters of type PlanWalker

Constructor and Description
AllSameExpressionVisitor(OperatorPlan plan, PlanWalker walker)
ExpToPhyTranslationVisitor(OperatorPlan plan, PlanWalker walker, LogicalRelationalOperator op, PhysicalPlan phyPlan, Map<Operator,PhysicalOperator> map)
LogicalExpressionVisitor(OperatorPlan p, PlanWalker walker)

Uses of PlanWalker in org.apache.pig.newplan.logical.optimizer

Constructors in org.apache.pig.newplan.logical.optimizer with parameters of type PlanWalker

Constructor and Description
AllExpressionVisitor(OperatorPlan plan, PlanWalker walker)
AllSameRalationalNodesVisitor(OperatorPlan plan, PlanWalker walker)

Uses of PlanWalker in org.apache.pig.newplan.logical.relational

Constructors in org.apache.pig.newplan.logical.relational with parameters of type PlanWalker

Constructor and Description
LogicalRelationalNodesVisitor(OperatorPlan plan, PlanWalker walker)

Uses of PlanWalker in org.apache.pig.newplan.logical.visitor

Constructors in org.apache.pig.newplan.logical.visitor with parameters of type PlanWalker

Constructor and Description
ScalarVariableValidator.ProjectFinder(OperatorPlan p, PlanWalker walker)

Uses of PlanWalker in org.apache.pig.pen.util

Subclasses of PlanWalker in org.apache.pig.pen.util

Modifier and Type	Class and Description
class	PreOrderDepthFirstWalker

Methods in org.apache.pig.pen.util that return PlanWalker

Modifier and Type	Method and Description
PlanWalker	PreOrderDepthFirstWalker.spawnChildWalker(OperatorPlan plan)