Package org.apache.pig.newplan

Examples of org.apache.pig.newplan.ReverseDependencyOrderWalker

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        plan.connect(joe, bob);
        plan.connect(bob, jill);
        plan.connect(jane, jill);

        SillyVisitor v =
                new SillyVisitor(plan, new ReverseDependencyOrderWalker(plan));

        v.visit();

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

        SillyVisitor v =
                new SillyVisitor(plan, new ReverseDependencyOrderWalker(plan));

        v.visit();

        String s = v.getVisitPattern();
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            Map<ProjectExpression, LogicalRelationalOperator> proj2InpRel,
            LOForEach foreach,
            List<LOInnerLoad> expandedInLoads
    )
    throws FrontendException {
        super(p, new ReverseDependencyOrderWalker(p));
        this.loGen = loGen;
        this.innerRelPlan = (LogicalPlan) loGen.getPlan();
        this.oldPos2Rel = oldPos2Rel;
        this.proj2InpRel = proj2InpRel;
        this.foreach = foreach;
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class ProjExpanderForNonForeach extends LogicalExpressionVisitor{

    protected ProjExpanderForNonForeach(OperatorPlan p)
    throws FrontendException {
        super(p, new ReverseDependencyOrderWalker(p));
    }
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                OperatorPlan expPlan,
                Map<Long, FuncSpec> uid2LoadFuncMap,
                CompilationMessageCollector msgCollector
        )
        throws FrontendException {
            super(expPlan, new ReverseDependencyOrderWalker(expPlan));
            this.uid2LoadFuncMap = uid2LoadFuncMap;
            this.msgCollector = msgCollector;
        }
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            CompilationMessageCollector msgCollector,
            LogicalRelationalOperator relOp
    )
    throws FrontendException {

        super(expPlan, new ReverseDependencyOrderWalker(expPlan));
        this.msgCollector = msgCollector;
        this.currentRelOp = relOp;
        //reset field schema of all expression operators because
        // it needs to be re-evaluated after correct types are set
        FieldSchemaResetter sr = new FieldSchemaResetter(expPlan);
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    static class FieldSchemaResetter extends AllSameExpressionVisitor {

        protected FieldSchemaResetter(OperatorPlan p) throws FrontendException {
            super(p, new ReverseDependencyOrderWalker(p));
        }
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    @Override
    public void visit(LOLimit limit) throws FrontendException {
        LogicalExpressionPlan expression = limit.getLimitPlan();
        if (expression != null) {
            ProjectFinder pf = new ProjectFinder(expression,
                    new ReverseDependencyOrderWalker(expression));
            pf.visit();
            if (pf.found()) {
                int errCode = 1131;
                throw new VisitorException(limit, ERR_MSG_SCALAR, errCode,
                        PigException.INPUT);
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        LogicalExpressionPlan expression = filter.getFilterPlan();
        if (expression != null) {
            // if it is a Sample, the expression must be scalar
            if (filter.isSample()) {
                ProjectFinder pf = new ProjectFinder(expression,
                        new ReverseDependencyOrderWalker(expression));
                pf.visit();
                if (pf.found()) {
                    int errCode = 1131;
                    throw new VisitorException(filter, ERR_MSG_SCALAR, errCode,
                            PigException.INPUT);
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            }

            @Override
            protected LogicalExpressionVisitor getVisitor(
                    LogicalExpressionPlan exprPlan) throws FrontendException {
                return new CastExpFinder(exprPlan, new ReverseDependencyOrderWalker(exprPlan));
            }
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Related Classes of org.apache.pig.newplan.ReverseDependencyOrderWalker

  • org.apache.pig.newplan.logical.optimizer.ExpressionUidResetter
  • org.apache.pig.newplan.logical.optimizer.FieldSchemaResetter
  • org.apache.pig.newplan.logical.relational.LOForEach$NestedRelationalOperatorFinder
  • org.apache.pig.newplan.logical.relational.LOSort$ResetProjectionAttachedRelationalOpVisitor
  • org.apache.pig.newplan.logical.rules.ColumnPruneHelper$ColumnDependencyVisitor
  • org.apache.pig.newplan.logical.rules.ColumnPruneVisitor
  • org.apache.pig.newplan.logical.rules.ConstExpEvaluator
  • org.apache.pig.newplan.logical.rules.DNFPlanGenerator
  • org.apache.pig.newplan.logical.rules.LogicalExpressionSimplifier$LogicalExpressionSimplifierTransformer
  • org.apache.pig.newplan.logical.rules.MapKeysPruneHelper$FullMapCollector
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