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

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

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

org.apache.jackrabbit.spi.commons.query.jsr283.qom.Constraint
Filters node-tuples based on the outcome of a binary operation.
For any comparison, {@link #getOperand2 operand2} always evaluates to ascalar value. In contrast, {@link #getOperand1 operand1} may evaluate toan array of values (for example, the value of a multi-valued property), in which case the comparison is separately performed for each element of the array, and the Comparison constraint is satisfied as a whole if the comparison against any element of the array is satisfied.
If {@link #getOperand1 operand1} and {@link #getOperand2 operand2}evaluate to values of different property types, the value of {@link #getOperand2 operand2} is converted to the property type ofthe value of {@link #getOperand1 operand1}. If the type conversion fails, the query is invalid.
Certain operators may only be applied to values of certain property types. The following describes required operator support for each property type:
- STRING
  - EqualTo, NotEqualTo, LessThan, LessThanOrEqualTo, GreaterThan, GreaterThanOrEqualTo, Like
- BINARY
  - None
- DATE, LONG, DOUBLE, DECIMAL
  - EqualTo, NotEqualTo, LessThan, LessThanOrEqualTo, GreaterThan, GreaterThanOrEqualTo
- BOOLEAN, NAME, PATH, REFERENCE, WEAKREFERENCE, URI
  - EqualTo, NotEqualTo
If {@link #getOperator operator} is not supported for the property type of{@link #getOperand1 operand1}, the query is invalid.
If {@link #getOperand1 operand1} evaluates to null (for example, if theoperand evaluates the value of a property which does not exist), the constraint is not satisfied.
The EqualTo operator is satisfied only if the value of {@link #getOperand1 operand1} equals the value of{@link #getOperand2 operand2}.
The NotEqualTo operator is satisfied unless the value of {@link #getOperand1 operand1} equals the value of{@link #getOperand2 operand2}.
The LessThan operator is satisfied only if the value of {@link #getOperand1 operand1} is ordered before the value of{@link #getOperand2 operand2}.
The LessThanOrEqualTo operator is satisfied unless the value of {@link #getOperand1 operand1} is ordered after the value of{@link #getOperand2 operand2}.
The GreaterThan operator is satisfied only if the value of {@link #getOperand1 operand1} is ordered after the value of{@link #getOperand2 operand2}.
The GreaterThanOrEqualTo operator is satisfied unless the value of {@link #getOperand1 operand1} is ordered before the value of{@link #getOperand2 operand2}.
The Like operator is satisfied only if the value of {@link #getOperand1 operand1} matches the pattern specified by thevalue of {@link #getOperand2 operand2}, where in the pattern:
- the character "%" matches zero or more characters, and
- the character "_" (underscore) matches exactly one character, and
- the string "\x" matches the character "x", and
- all other characters match themselves.
@since JCR 2.0


    /**
     * Test case for {@link QueryObjectModelFactory#column(String)}
     */
    public void testColumnAllProperties() throws RepositoryException {
        Column col = qomFactory.column(null);
        assertNull("Selector must be null", col.getSelectorName());
        assertNull("Property name must be null", col.getPropertyName());
        assertNull("Column name must be null", col.getColumnName());
    }

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    /**
     * Test case for {@link QueryObjectModelFactory#column(String, String)}
     */
    public void testColumnWithColumnName() throws RepositoryException {
        Column col = qomFactory.column(propertyName1, COLUMN_NAME);
        assertNull("Selector must be null", col.getSelectorName());
        assertEquals("Wrong property name", propertyName1, col.getPropertyName());
        assertEquals("Wrong column name", COLUMN_NAME, col.getColumnName());
    }

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    /**
     * Test case for {@link QueryObjectModelFactory#column(String, String, String)}
     */
    public void testColumnWithSelector() throws RepositoryException {
        Column col = qomFactory.column(SELECTOR_NAME1, propertyName1, COLUMN_NAME);
        assertEquals("Wrong selector name", SELECTOR_NAME1, col.getSelectorName());
        assertEquals("Wrong property name", propertyName1, col.getPropertyName());
        assertEquals("Wrong column name", COLUMN_NAME, col.getColumnName());
    }

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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);
        assertTrue("Not a property existence constraint", qom.getConstraint() instanceof PropertyExistence);
        assertEquals("Wrong size of orderings", 1, qom.getOrderings().length);

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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);
        assertTrue("Not a property existence constraint", qom.getConstraint() instanceof PropertyExistence);
        assertEquals("Wrong size of orderings", 1, qom.getOrderings().length);

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    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);
            assertTrue("Not a BindVariableValue operand", comp.getOperand2() instanceof BindVariableValue);
            assertEquals("Wrong operator", operator, comp.getOperator());
        }
    }

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    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);
            assertTrue("Not a BindVariableValue operand", comp.getOperand2() instanceof BindVariableValue);
            assertEquals("Wrong operator", operator, comp.getOperator());
        }
    }

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        read("SELECT");
        ArrayList list = parseColumns();
        read("FROM");
        Source source = parseSource();
        Column[] columnArray = resolveColumns(list);
        Constraint constraint = null;
        if (readIf("WHERE")) {
            constraint = parseConstraint();
        }
        Ordering[] orderings = null;
        if (readIf("ORDER")) {

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        }
    }


    // Page 136
    private Constraint parseConstraint() throws RepositoryException {
        Constraint a = parseAnd();
        while (readIf("OR")) {
            a = factory.or(a, parseAnd());
        }
        return a;
    }

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        }
        return a;
    }


    private Constraint parseAnd() throws RepositoryException {
        Constraint a = parseCondition();
        while (readIf("AND")) {
            a = factory.and(a, parseCondition());
        }
        return a;
    }

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