Examples of org.apache.jackrabbit.spi.commons.query.jsr283.qom.QueryObjectModel

Package org.apache.jackrabbit.spi.commons.query.jsr283.qom

Examples of org.apache.jackrabbit.spi.commons.query.jsr283.qom.QueryObjectModel

org.apache.jackrabbit.spi.commons.query.jsr283.qom.PropertyValue
A query in the JCR query object model.
The JCR query object model describes the queries that can be evaluated by a JCR repository independent of any particular query language, such as SQL.
A query consists of:
- a source. When the query is evaluated, the source evaluates its selectors and the joins between them to produce a (possibly empty) set of node-tuples. This is a set of 1-tuples if the query has one selector (and therefore no joins), a set of 2-tuples if the query has two selectors (and therefore one join), a set of 3-tuples if the query has three selectors (two joins), and so forth.
- an optional constraint. When the query is evaluated, the constraint filters the set of node-tuples.
- a list of zero or more orderings. The orderings specify the order in which the node-tuples appear in the query results. The relative order of two node-tuples is determined by evaluating the specified orderings, in list order, until encountering an ordering for which one node-tuple precedes the other. If no orderings are specified, or if for none of the specified orderings does one node-tuple precede the other, then the relative order of the node-tuples is implementation determined (and may be arbitrary).
- a list of zero or more columns to include in the tabular view of the query results. If no columns are specified, the columns available in the tabular view are implementation determined, but minimally include, for each selector, a column for each single-valued non-residual property of the selector's node type.
The query object model representation of a query is created by factory methods in the {@link QueryObjectModelFactory}. @since JCR 2.0


    /**
     * Test case for {@link QueryObjectModelFactory#ascending(DynamicOperand)}
     */
    public void testOrderingAscending() throws RepositoryException {
        PropertyValue op = qomFactory.propertyValue(propertyName1);
        Ordering asc = qomFactory.ascending(op);
        assertEquals("Ordering.getOrder() must return QueryObjectModelConstants.ORDER_ASCENDING",
                QueryObjectModelConstants.ORDER_ASCENDING, asc.getOrder());
        assertTrue("Not a PropertyValue operand", asc.getOperand() instanceof PropertyValue);
    }

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    /**
     * Test case for {@link QueryObjectModelFactory#comparison(DynamicOperand, int, StaticOperand)}
     */
    public void testComparison() throws RepositoryException {
        PropertyValue op1 = qomFactory.propertyValue(propertyName1);
        BindVariableValue op2 = qomFactory.bindVariable(VARIABLE_NAME);
        for (Iterator it = OPERATORS.iterator(); it.hasNext(); ) {
            int operator = ((Integer) it.next()).intValue();
            Comparison comp = qomFactory.comparison(op1, operator, op2);
            assertTrue("Not a PropertyValue operand", comp.getOperand1() instanceof PropertyValue);

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    }


    public void testCreateQueryWithConstraintAndOrdering() throws RepositoryException {
        Selector selector = qomFactory.selector(testNodeType);
        PropertyExistence propExist = qomFactory.propertyExistence(propertyName1);
        PropertyValue propValue = qomFactory.propertyValue(propertyName1);
        Ordering ordering = qomFactory.ascending(propValue);
        QueryObjectModel qom = qomFactory.createQuery(selector, propExist,
                new Ordering[]{ordering}, null);
        assertTrue("Not a selector source", qom.getSource() instanceof Selector);
        assertTrue("Not a property existence constraint", qom.getConstraint() instanceof PropertyExistence);

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    }


    public void testCreateQueryWithConstraintOrderingAndColumn() throws RepositoryException {
        Selector selector = qomFactory.selector(testNodeType);
        PropertyExistence propExist = qomFactory.propertyExistence(propertyName1);
        PropertyValue propValue = qomFactory.propertyValue(propertyName1);
        Ordering ordering = qomFactory.ascending(propValue);
        Column column = qomFactory.column(propertyName1);
        QueryObjectModel qom = qomFactory.createQuery(selector, propExist,
                new Ordering[]{ordering}, new Column[]{column});
        assertTrue("Not a selector source", qom.getSource() instanceof Selector);

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    }


    public void testCreateQueryFromSourceWithConstraintAndOrdering() throws RepositoryException {
        Source selector = qomFactory.selector(testNodeType);
        PropertyExistence propExist = qomFactory.propertyExistence(propertyName1);
        PropertyValue propValue = qomFactory.propertyValue(propertyName1);
        Ordering ordering = qomFactory.ascending(propValue);
        QueryObjectModel qom = qomFactory.createQuery(selector, propExist,
                new Ordering[]{ordering}, null);
        assertTrue("Not a selector source", qom.getSource() instanceof Selector);
        assertTrue("Not a property existence constraint", qom.getConstraint() instanceof PropertyExistence);

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    }


    public void testCreateQueryFromSourceWithConstraintOrderingAndColumn() throws RepositoryException {
        Source selector = qomFactory.selector(testNodeType);
        PropertyExistence propExist = qomFactory.propertyExistence(propertyName1);
        PropertyValue propValue = qomFactory.propertyValue(propertyName1);
        Ordering ordering = qomFactory.ascending(propValue);
        Column column = qomFactory.column(propertyName1);
        QueryObjectModel qom = qomFactory.createQuery(selector, propExist,
                new Ordering[]{ordering}, new Column[]{column});
        assertTrue("Not a selector source", qom.getSource() instanceof Selector);

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    /**
     * Test case for {@link QueryObjectModelFactory#descending(DynamicOperand)}
     */
    public void testOrderingDescending() throws RepositoryException {
        PropertyValue op = qomFactory.propertyValue(propertyName1);
        Ordering desc = qomFactory.descending(op);
        assertEquals("Ordering.getOrder() must return QueryObjectModelConstants.ORDER_DESCENDING",
                QueryObjectModelConstants.ORDER_DESCENDING, desc.getOrder());
        assertTrue("Not a PropertyValue operand", desc.getOperand() instanceof PropertyValue);
    }

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    /**
     * Test case for {@link QueryObjectModelFactory#length(PropertyValue)}
     */
    public void testLength() throws RepositoryException {
        PropertyValue propValue = qomFactory.propertyValue(propertyName1);
        Length len = qomFactory.length(propValue);
        assertNotNull("Property value must not be null", len.getPropertyValue());
    }

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    /**
     * Test case for {@link QueryObjectModelFactory#lowerCase(DynamicOperand)}
     */
    public void testLowerCase() throws RepositoryException {
        PropertyValue propValue = qomFactory.propertyValue(propertyName1);
        LowerCase lower = qomFactory.lowerCase(propValue);
        assertTrue("Not a property value operand", lower.getOperand() instanceof PropertyValue);
    }

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    /**
     * Test case for {@link QueryObjectModelFactory#propertyValue(String)}
     */
    public void testPropertyValue() throws RepositoryException {
        PropertyValue propVal = qomFactory.propertyValue(propertyName1);
        assertNull("Selector name must be null", propVal.getSelectorName());
        assertEquals("Wrong property name", propertyName1, propVal.getPropertyName());
    }

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