Package org.apache.vxquery.compiler.rewriter.rules.propagationpolicies.cardinality

Examples of org.apache.vxquery.compiler.rewriter.rules.propagationpolicies.cardinality.Cardinality

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            return false;
        }

        // Set cardinality in the context. Must update each time the rule is run.
        VXQueryOptimizationContext vxqueryContext = (VXQueryOptimizationContext) context;
        Cardinality cardinalityVariable = CardinalityRuleToolbox.getProducerCardinality(opRef.getValue(), vxqueryContext);
       
        // Track variables created
       
        // Track variables used
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        // Initialization.
        VXQueryOptimizationContext vxqueryContext = (VXQueryOptimizationContext) context;

        // Find the available variables.
        Cardinality cardinalityVariable = CardinalityRuleToolbox.getProducerCardinality(opRef.getValue(),
                vxqueryContext);
        HashMap<Integer, DocumentOrder> documentOrderVariables = getProducerDocumentOrderVariableMap(opRef.getValue(),
                vxqueryContext);
        HashMap<Integer, UniqueNodes> uniqueNodesVariables = getProducerUniqueNodesVariableMap(opRef.getValue(),
                vxqueryContext);
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            case UNNEST:
                // Get unnest item property.
                UnnestOperator unnest = (UnnestOperator) op;
                ILogicalExpression unnestLogicalExpression = (ILogicalExpression) unnest.getExpressionRef().getValue();
                variableId = unnest.getVariables().get(0).getId();
                Cardinality inputCardinality = vxqueryContext.getCardinalityOperatorMap(op.getInputs().get(0)
                        .getValue());
                documentOrder = propagateDocumentOrder(unnestLogicalExpression, documentOrderVariablesForOperator);
                uniqueNodes = propagateUniqueNodes(unnestLogicalExpression, uniqueNodesVariablesForOperator);

                // Reset properties based on unnest duplication.
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Related Classes of org.apache.vxquery.compiler.rewriter.rules.propagationpolicies.cardinality.Cardinality

  • org.apache.vxquery.compiler.rewriter.rules.EliminateSubplanForSinglePathsRule
  • org.apache.vxquery.compiler.rewriter.rules.RemoveUnusedSortDistinctNodesRule
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