Package org.jboss.dna.graph.query.model

Examples of org.jboss.dna.graph.query.model.JoinCondition

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        Map<SelectorName, SelectorName> rewrittenSelectors = null;
        int rewrittenJoins = 0;
        int numJoins = 0;
        for (PlanNode joinNode : plan.findAllAtOrBelow(Type.JOIN)) {
            ++numJoins;
            JoinCondition condition = joinNode.getProperty(Property.JOIN_CONDITION, JoinCondition.class);
            if (condition instanceof EquiJoinCondition) {
                PlanNode leftNode = joinNode.getFirstChild().findAtOrBelow(Type.SOURCE);
                PlanNode rightNode = joinNode.getLastChild().findAtOrBelow(Type.SOURCE);
                assert leftNode != null;
                assert rightNode != null;
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                ProcessingComponent left = createComponent(originalQuery, context, node.getFirstChild(), columns, analyzer);
                ProcessingComponent right = createComponent(originalQuery, context, node.getLastChild(), columns, analyzer);
                // Create the join component ...
                JoinAlgorithm algorithm = node.getProperty(Property.JOIN_ALGORITHM, JoinAlgorithm.class);
                JoinType joinType = node.getProperty(Property.JOIN_TYPE, JoinType.class);
                JoinCondition joinCondition = node.getProperty(Property.JOIN_CONDITION, JoinCondition.class);
                switch (algorithm) {
                    case MERGE:
                        if (joinCondition instanceof SameNodeJoinCondition) {
                            SameNodeJoinCondition condition = (SameNodeJoinCondition)joinCondition;
                            component = new MergeJoinComponent(context, left, right, condition, joinType);
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        node = planNode;
        do {
            switch (node.getType()) {
                case JOIN:
                    Constraint criteria = node.getProperty(Property.JOIN_CONSTRAINTS, Constraint.class);
                    JoinCondition joinCondition = node.getProperty(Property.JOIN_CONDITION, JoinCondition.class);
                    Visitors.visitAll(criteria, collectionVisitor);
                    Visitors.visitAll(joinCondition, collectionVisitor);
                    break;
                case SELECT:
                    criteria = node.getProperty(Property.SELECT_CRITERIA, Constraint.class);
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                    }
                }
                break;
            case JOIN:
                // Update the join condition ...
                JoinCondition joinCondition = planNode.getProperty(Property.JOIN_CONDITION, JoinCondition.class);
                JoinCondition newCondition = replaceReferencesToRemovedSource(context, joinCondition, rewrittenSelectors);
                if (joinCondition != newCondition) {
                    planNode.setProperty(Property.JOIN_CONDITION, newCondition);
                }

                // Update the join criteria (if there are some) ...
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                        SelectorName sourceName = node.getProperty(Property.SOURCE_NAME, SelectorName.class);
                        assert sourceName.equals(sourceName); // selector name already matches
                        potentiallyRemovableSources.add(node);
                        break;
                    case JOIN:
                        JoinCondition joinCondition = node.getProperty(Property.JOIN_CONDITION, JoinCondition.class);
                        JoinCondition newJoinCondition = replaceViewReferences(context, joinCondition, mappings, node);
                        node.getSelectors().clear();
                        node.setProperty(Property.JOIN_CONDITION, newJoinCondition);
                        node.addSelectors(Visitors.getSelectorsReferencedBy(newJoinCondition));
                        List<Constraint> joinConstraints = node.getPropertyAsList(Property.JOIN_CONSTRAINTS, Constraint.class);
                        if (joinConstraints != null && !joinConstraints.isEmpty()) {
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            }
            if (joinType == null) break;
            // Read the name of the selector on the right side of the join ...
            NamedSelector right = parseNamedSelector(tokens);
            // Read the join condition ...
            JoinCondition joinCondition = parseJoinCondition(tokens, typeSystem);
            // Create the join ...
            source = new Join(source, joinType, right, joinCondition);
        }
        return source;
    }
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                             LinkedList<OptimizerRule> ruleStack ) {
        Set<PlanNode> copiedSelectNodes = new HashSet<PlanNode>();

        for (PlanNode join : plan.findAllAtOrBelow(Type.JOIN)) {
            // Get the join condition ...
            JoinCondition joinCondition = join.getProperty(Property.JOIN_CONDITION, JoinCondition.class);
            if (joinCondition instanceof EquiJoinCondition) {
                EquiJoinCondition equiJoinCondition = (EquiJoinCondition)joinCondition;
                SelectorName selector1 = equiJoinCondition.getSelector1Name();
                SelectorName selector2 = equiJoinCondition.getSelector2Name();
                String property1 = equiJoinCondition.getProperty1Name();
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                             LinkedList<OptimizerRule> ruleStack ) {
        Set<PlanNode> copiedSelectNodes = new HashSet<PlanNode>();

        for (PlanNode join : plan.findAllAtOrBelow(Type.JOIN)) {
            // Get the join condition ...
            JoinCondition joinCondition = join.getProperty(Property.JOIN_CONDITION, JoinCondition.class);
            if (joinCondition instanceof EquiJoinCondition) {
                EquiJoinCondition equiJoinCondition = (EquiJoinCondition)joinCondition;
                SelectorName selector1 = equiJoinCondition.getSelector1Name();
                SelectorName selector2 = equiJoinCondition.getSelector2Name();
                String property1 = equiJoinCondition.getProperty1Name();
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    public PlanNode execute( QueryContext context,
                             PlanNode plan,
                             LinkedList<OptimizerRule> ruleStack ) {
        // For each of the JOIN nodes ...
        for (PlanNode joinNode : plan.findAllAtOrBelow(Type.JOIN)) {
            JoinCondition condition = joinNode.getProperty(Property.JOIN_CONDITION, JoinCondition.class);
            if (useOnlyNested) {
                joinNode.setProperty(Property.JOIN_ALGORITHM, JoinAlgorithm.NESTED_LOOP);
                break;
            }
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Related Classes of org.jboss.dna.graph.query.model.JoinCondition

  • org.jboss.dna.graph.query.optimize.ChooseJoinAlgorithm
  • org.jboss.dna.graph.query.optimize.CopyCriteria
  • org.jboss.dna.graph.query.optimize.RaiseSelectCriteria
  • org.jboss.dna.graph.query.optimize.RewriteIdentityJoins
  • org.jboss.dna.graph.query.parse.SqlQueryParser
  • org.jboss.dna.graph.query.plan.PlanUtil
  • org.jboss.dna.graph.query.process.QueryProcessor
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