Examples of DependencyOrderWalker

org.apache.pig.experimental.plan.DependencyOrderWalker
A walker to walk graphs in dependency order. It is guaranteed that a node will not be visited until all of its predecessors have been visited. This is equivalent to doing a topilogical sort on the graph and then visiting the nodes in order.
org.apache.pig.impl.plan.DependencyOrderWalker
DependencyOrderWalker traverses the graph in such a way that no node is visited before all the nodes it depends on have been visited. Beyond this, it does not guarantee any particular order. So, you have a graph with node 1 2 3 4, and edges 1->3, 2->3, and 3->4, this walker guarnatees that 1 and 2 will be visited before 3 and 3 before 4, but it does not guarantee whether 1 or 2 will be visited first.
org.apache.pig.newplan.DependencyOrderWalker
A walker to walk graphs in dependency order. It is guaranteed that a node will not be visited until all of its predecessors have been visited. This is equivalent to doing a topilogical sort on the graph and then visiting the nodes in order.

Examples of org.apache.pig.newplan.DependencyOrderWalker

        
        static class FullMapExpCollector extends LogicalExpressionVisitor {
            Set<Long> fullMapUids = new HashSet<Long>();
            protected FullMapExpCollector(OperatorPlan plan, Set<Long> fullMapUids)
                    throws FrontendException {
                super(plan, new DependencyOrderWalker(plan));
                this.fullMapUids = fullMapUids;
            }

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Examples of org.apache.pig.newplan.DependencyOrderWalker

import org.apache.pig.newplan.logical.relational.LogicalRelationalNodesVisitor;


public class UidResetter extends LogicalRelationalNodesVisitor {


    public UidResetter(OperatorPlan plan) throws FrontendException {
        super(plan, new DependencyOrderWalker(plan));
    }

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Examples of org.apache.pig.newplan.DependencyOrderWalker

        
        plan.connect(fred, joe);
        plan.connect(joe, bob);
        
        SillyVisitor v =
            new SillyVisitor(plan, new DependencyOrderWalker(plan));
        
        v.visit();
        
        String s = v.getVisitPattern();

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Examples of org.apache.pig.newplan.DependencyOrderWalker

        plan.connect(joe, bob);
        plan.connect(bob, jill);
        plan.connect(jane, jill);
        
        SillyVisitor v =
            new SillyVisitor(plan, new DependencyOrderWalker(plan));
        
        v.visit();
        
        String s = v.getVisitPattern();

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Examples of org.apache.pig.newplan.DependencyOrderWalker

        plan.connect(joe, bob);
        plan.connect(bob, jill);
        plan.connect(bob, jane);
        
        SillyVisitor v =
            new SillyVisitor(plan, new DependencyOrderWalker(plan));
        
        v.visit();
        
        String s = v.getVisitPattern();

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Examples of org.apache.pig.newplan.DependencyOrderWalker

 */
public class OptimizeLimitPlanPrinter extends LogicalRelationalNodesVisitor {
    private StringBuilder sb = null ;
    
    public OptimizeLimitPlanPrinter(LogicalPlan plan) throws FrontendException {
        super( plan, new DependencyOrderWalker( plan ) );
        sb = new StringBuilder() ;
    }

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Examples of org.apache.pig.newplan.DependencyOrderWalker


class MyLogicalExpressionVisitor extends LogicalExpressionVisitor {
    private StringBuilder sb = null ;
    
    public MyLogicalExpressionVisitor(LogicalExpressionPlan plan) throws FrontendException {
        super( plan, new DependencyOrderWalker( plan ) );
        sb = new StringBuilder() ;
    }

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Examples of org.apache.pig.newplan.DependencyOrderWalker

import org.apache.pig.impl.util.Utils;


public class LogToPhyTranslationVisitor extends LogicalRelationalNodesVisitor {
    
    public LogToPhyTranslationVisitor(OperatorPlan plan) throws FrontendException {
        super(plan, new DependencyOrderWalker(plan));
        currentPlan = new PhysicalPlan();
        logToPhyMap = new HashMap<Operator, PhysicalOperator>();
        currentPlans = new Stack<PhysicalPlan>();
    }

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Examples of org.apache.pig.newplan.DependencyOrderWalker

    }
    
    public static class SortInfoSetter extends LogicalRelationalNodesVisitor {


        public SortInfoSetter(OperatorPlan plan) throws FrontendException {
            super(plan, new DependencyOrderWalker(plan));
        }

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Examples of org.apache.pig.newplan.DependencyOrderWalker

        static class MapExprMarker extends LogicalExpressionVisitor {


            Map<Long,Set<String>> inputUids = null;
            
            protected MapExprMarker(OperatorPlan p) throws FrontendException {
                super(p, new DependencyOrderWalker(p));
                inputUids = new HashMap<Long,Set<String>>();
            }

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