Package org.modeshape.jcr.query.plan

Examples of org.modeshape.jcr.query.plan.PlanNode$Operation

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    }

    @Test
    public void shouldNotPushDownSelectNodesThatUseDifferentSelectorNamesThanSourceNode() {
        // Each of the PROJECT, SELECT, and SELECT nodes must have the names of the selectors that they apply to ...
        PlanNode project = new PlanNode(Type.PROJECT, selector("Selector1"));
        PlanNode select1 = new PlanNode(Type.SELECT, project, selector("Selector2"));
        PlanNode select2 = new PlanNode(Type.SELECT, select1, selector("Selector1"));
        PlanNode select3 = new PlanNode(Type.SELECT, select2, selector("Selector2"));
        PlanNode select4 = new PlanNode(Type.SELECT, select3, selector("Selector1"));
        PlanNode access = new PlanNode(Type.ACCESS, select4, selector("Selector1"));
        PlanNode source = new PlanNode(Type.SOURCE, access, selector("Selector1"));

        // Execute the rule ...
        PlanNode result = rule.execute(context, project, new LinkedList<OptimizerRule>());
        assertThat(result, is(sameInstance(project)));
        assertChildren(project, select1);
        assertChildren(select1, select3);
        assertChildren(select3, access);
        assertChildren(access, select2);
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     * </pre>
     */
    @Test
    public void shouldPushDownAllSelectNodesThatApplyToOneSelectorToBelowAccessNodeForThatSelector() {
        // Each of the PROJECT, SELECT, and SELECT nodes must have the names of the selectors that they apply to ...
        PlanNode project = new PlanNode(Type.PROJECT, selector("Selector1"), selector("Selector2"));
        PlanNode select1 = new PlanNode(Type.SELECT, project, selector("Selector1"));
        PlanNode select2 = new PlanNode(Type.SELECT, select1, selector("Selector2"));
        PlanNode select3 = new PlanNode(Type.SELECT, select2, selector("Selector1"), selector("Selector2"));
        PlanNode select4 = new PlanNode(Type.SELECT, select3, selector("Selector1"));
        PlanNode join = new PlanNode(Type.JOIN, select4, selector("Selector1"), selector("Selector2"));
        PlanNode s1Access = new PlanNode(Type.ACCESS, join, selector("Selector1"));
        PlanNode s1Source = new PlanNode(Type.SOURCE, s1Access, selector("Selector1"));
        PlanNode s2Access = new PlanNode(Type.ACCESS, join, selector("Selector2"));
        PlanNode s2Source = new PlanNode(Type.SOURCE, s2Access, selector("Selector2"));
        // Set the join type ...
        join.setProperty(Property.JOIN_TYPE, JoinType.INNER);

        // Execute the rule ...
        PlanNode result = rule.execute(context, project, new LinkedList<OptimizerRule>());

        // System.out.println(result);

        assertThat(result, is(sameInstance(project)));
        assertChildren(project, select3);
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     * </pre>
     */
    @Test
    public void shouldReplaceViewWithPlanForViewWithSingleTable() {
        // Each of the PROJECT, SELECT, and SELECT nodes must have the names of the selectors that they apply to ...
        PlanNode project = new PlanNode(Type.PROJECT, selector("v1"));
        PlanNode select1 = new PlanNode(Type.SELECT, project, selector("v1"));
        PlanNode select2 = new PlanNode(Type.SELECT, select1, selector("v1"));
        PlanNode select3 = new PlanNode(Type.SELECT, select2, selector("v1"));
        PlanNode source = new PlanNode(Type.SOURCE, select3, selector("v1"));
        source.setProperty(Property.SOURCE_NAME, selector("v1"));

        // Create the equivalent plan nodes for what should be created ...
        PlanNode viewProject = new PlanNode(Type.PROJECT, selector("t1"));
        PlanNode viewSelect = new PlanNode(Type.SELECT, viewProject, selector("t1"));
        PlanNode viewSource = new PlanNode(Type.SOURCE, viewSelect, selector("t1"));
        viewProject.setProperty(Property.PROJECT_COLUMNS, columns(column("t1", "c11"), column("t1", "c12")));
        viewSelect.setProperty(Property.SELECT_CRITERIA, new Comparison(new PropertyValue(selector("t1"), "c13"),
                                                                        Operator.LESS_THAN, new Literal(3L)));
        viewSource.setProperty(Property.SOURCE_NAME, selector("t1"));
        viewSource.setProperty(Property.SOURCE_COLUMNS, schemata.getTable(selector("t1")).getColumns());

        // Execute the rule ...
        PlanNode result = rule.execute(context, project, new LinkedList<OptimizerRule>());
        // System.out.println(project);
        // System.out.println(result);
        assertThat(result.isSameAs(project), is(true));
        assertChildren(project, select1);
        assertChildren(select1, select2);
        assertChildren(select2, select3);
    }
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     *        SOURCE
     * </pre>
     */
    @Test
    public void shouldAddAccessNodeAboveSourceNode() {
        PlanNode project = new PlanNode(Type.PROJECT, selector("Selector1"));
        PlanNode source = new PlanNode(Type.SOURCE, project, selector("Selector1"));

        // Execute the rule ...
        PlanNode result = rule.execute(context, project, new LinkedList<OptimizerRule>());
        assertThat(result, is(sameInstance(project)));
        PlanNode access = project.getFirstChild();
        assertThat(access.getType(), is(Type.ACCESS));
        assertSelectors(access, "Selector1");
        assertChildren(access, source);
        assertChildren(source);
    }
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    }

    @Test
    public void shouldDoNothingWithLeftOuterJoin() {
        // Create a LEFT_OUTER join ...
        PlanNode joinNode = new PlanNode(Type.JOIN);
        joinNode.setProperty(Property.JOIN_TYPE, JoinType.LEFT_OUTER);
        PlanNode lhs = new PlanNode(Type.SOURCE, joinNode);
        PlanNode rhs = new PlanNode(Type.SOURCE, joinNode);

        // Execute the rule ...
        PlanNode result = rule.execute(context, joinNode, new LinkedList<OptimizerRule>());
        assertThat(result, is(sameInstance(joinNode)));

        // Verify nothing has changed ...
        assertThat(joinNode.getProperty(Property.JOIN_TYPE, JoinType.class), is(JoinType.LEFT_OUTER));
        assertThat(joinNode.getFirstChild(), is(sameInstance(lhs)));
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    }

    @Test
    public void shouldDoNothingWithCrossJoin() {
        // Create a LEFT_OUTER join ...
        PlanNode joinNode = new PlanNode(Type.JOIN);
        joinNode.setProperty(Property.JOIN_TYPE, JoinType.CROSS);
        PlanNode lhs = new PlanNode(Type.SOURCE, joinNode);
        PlanNode rhs = new PlanNode(Type.SOURCE, joinNode);

        // Execute the rule ...
        PlanNode result = rule.execute(context, joinNode, new LinkedList<OptimizerRule>());
        assertThat(result, is(sameInstance(joinNode)));

        // Verify nothing has changed ...
        assertThat(joinNode.getProperty(Property.JOIN_TYPE, JoinType.class), is(JoinType.CROSS));
        assertThat(joinNode.getFirstChild(), is(sameInstance(lhs)));
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    }

    @Test
    public void shouldDoNothingWithFullOuterJoin() {
        // Create a LEFT_OUTER join ...
        PlanNode joinNode = new PlanNode(Type.JOIN);
        joinNode.setProperty(Property.JOIN_TYPE, JoinType.FULL_OUTER);
        PlanNode lhs = new PlanNode(Type.SOURCE, joinNode);
        PlanNode rhs = new PlanNode(Type.SOURCE, joinNode);

        // Execute the rule ...
        PlanNode result = rule.execute(context, joinNode, new LinkedList<OptimizerRule>());
        assertThat(result, is(sameInstance(joinNode)));

        // Verify nothing has changed ...
        assertThat(joinNode.getProperty(Property.JOIN_TYPE, JoinType.class), is(JoinType.FULL_OUTER));
        assertThat(joinNode.getFirstChild(), is(sameInstance(lhs)));
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    }

    @Test
    public void shouldDoNothingWithInnerJoin() {
        // Create a LEFT_OUTER join ...
        PlanNode joinNode = new PlanNode(Type.JOIN);
        joinNode.setProperty(Property.JOIN_TYPE, JoinType.INNER);
        PlanNode lhs = new PlanNode(Type.SOURCE, joinNode);
        PlanNode rhs = new PlanNode(Type.SOURCE, joinNode);

        // Execute the rule ...
        PlanNode result = rule.execute(context, joinNode, new LinkedList<OptimizerRule>());
        assertThat(result, is(sameInstance(joinNode)));

        // Verify nothing has changed ...
        assertThat(joinNode.getProperty(Property.JOIN_TYPE, JoinType.class), is(JoinType.INNER));
        assertThat(joinNode.getFirstChild(), is(sameInstance(lhs)));
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    }

    @Test
    public void shouldChangeRightOuterJoinToLeftOuterJoinAndReverseChildNodes() {
        // Create a RIGHT_OUTER join ...
        PlanNode joinNode = new PlanNode(Type.JOIN);
        joinNode.setProperty(Property.JOIN_TYPE, JoinType.RIGHT_OUTER);
        PlanNode lhs = new PlanNode(Type.SOURCE, joinNode);
        PlanNode rhs = new PlanNode(Type.SOURCE, joinNode);

        // Execute the rule ...
        PlanNode result = rule.execute(context, joinNode, new LinkedList<OptimizerRule>());
        assertThat(result, is(sameInstance(joinNode)));

        // Verify the change ...
        assertThat(joinNode.getProperty(Property.JOIN_TYPE, JoinType.class), is(JoinType.LEFT_OUTER));
        assertThat(joinNode.getFirstChild(), is(sameInstance(rhs)));
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    }

    @Test
    public void shouldNotAddJoinConditionColumnIfAlreadyUsed() {
        // Create a join ...
        PlanNode joinNode = new PlanNode(Type.JOIN);
        joinNode.setProperty(Property.JOIN_TYPE, JoinType.LEFT_OUTER);
        joinNode.setProperty(Property.JOIN_CONDITION, new EquiJoinCondition(selector("left"), "c2", selector("right"), "d2"));
        PlanNode lhs = sourceNode(context, joinNode, "left", "c1", "c2", "c3");
        PlanNode rhs = sourceNode(context, joinNode, "right", "d1", "d2", "d3");

        // Execute the rule ...
        PlanNode result = rule.execute(context, joinNode, new LinkedList<OptimizerRule>());
        assertThat(result, is(sameInstance(joinNode)));

        // Verify nothing has changed ...
        assertThat(joinNode.getProperty(Property.JOIN_TYPE, JoinType.class), is(JoinType.LEFT_OUTER));
        assertThat(joinNode.getFirstChild(), is(sameInstance(lhs)));
        assertThat(joinNode.getLastChild(), is(sameInstance(rhs)));
        assertThat(joinNode.getChildCount(), is(2));
        PlanNode left = joinNode.getFirstChild();
        PlanNode right = joinNode.getLastChild();
        assertProperty(left, Property.PROJECT_COLUMNS, columns(context, selector("left"), "c1", "c2", "c3"));
        assertProperty(left, Property.PROJECT_COLUMN_TYPES, columnTypes(context, selector("left"), "c1", "c2", "c3"));
        assertProperty(right, Property.PROJECT_COLUMNS, columns(context, selector("right"), "d1", "d2", "d3"));
        assertProperty(right, Property.PROJECT_COLUMN_TYPES, columnTypes(context, selector("right"), "d1", "d2", "d3"));
    }
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