Examples of com.volantis.xml.expression.Value

com.volantis.xml.expression.Value
The base interface for values that can be used in an expression.
Warning: This is a facade provided for use by user code, not for implementation in user code. User implementations of this interface are highly likely to be incompatible with future releases of the product at both binary and source levels.

Immutable

All value objects are immutable once they have been created.

Null Value

An empty sequence is the XPath 2.0 equivalent of a Java null value. See {@link Sequence#EMPTY}.
@volantis-api-include-in PublicAPI @volantis-api-include-in ProfessionalServicesAPI @volantis-api-include-in InternalAPI @mock.generate

     * Test the concat function with arguments of various types
     * @throws Exception if an error occurs
     */
    public void testConcatDifferentTypes() throws Exception {


        Value one = factory.createIntValue(1);


        context.getCurrentScope().declareVariable(
                        new ImmutableExpandedName("", "myVar"),
                        one);


        context.getCurrentScope().declareVariable(
                        new ImmutableExpandedName("", "emptySeq"),
                        Sequence.EMPTY);


        context.getCurrentScope().declareVariable(
                        new ImmutableExpandedName("", "singleSeq"),
                        factory.createSequence(new Item[]
                        {factory.createStringValue("one")}));


        Expression exp = compileExpression(
                "concat(true(), 25.9, $emptySeq, $myVar, $singleSeq)");


        Value result = exp.evaluate(context);


        assertTrue("fn:concat should result in a String value",
                   result instanceof StringValue);


        assertEquals("fn:concat expression result should be 'true25.91one'",

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     */
    public void testSimpleAndOperator() throws Exception {


        Expression exp = compileExpression("2 = 2 and 3 = 3");


        Value result = exp.evaluate(context);


        assertTrue("AND expression should result in a boolean value",
                   result instanceof BooleanValue);


        assertTrue("AND expression result should be true",

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     * Another test for the AND operator
     * @throws Exception if an error occurs
     */
    public void testAndOperatorWithVariables() throws Exception {


        Value one = factory.createIntValue(1);


        context.getCurrentScope().declareVariable(
                new ImmutableExpandedName("", "myVar"),
                one);




        Expression exp = compileExpression("$myVar <= 1 and 4 > $myVar");


        Value result = exp.evaluate(context);


        assertTrue("AND expression should result in a boolean value",
                   result instanceof BooleanValue);


        assertTrue("AND expression result should be true",

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     */
    public void testSimpleOrOperator() throws Exception {


        Expression exp = compileExpression("2 = 3 or 3 = 3");


        Value result = exp.evaluate(context);


        assertTrue("OR expression should result in a boolean value",
                   result instanceof BooleanValue);


        assertTrue("OR expression result should be true",

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    /**
     * Tests if empty sequence is returned for empty sequence
     */
    public void testEmptySequence() throws ExpressionException {
        final Function function = new MaxFunction();
        Value result = function.invoke(expressionContextMock, 
                new Value[]{factory.createSequence(new Item[]{})});
        assertTrue(result instanceof Sequence);
        assertEquals(0, result.getSequence().getLength());
    }

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     * another test for the OR operator
     * @throws Exception if an error occurs
     */
    public void testOrOperatorWithVariables() throws Exception {


        Value one = factory.createIntValue(1);


        context.getCurrentScope().declareVariable(
                new ImmutableExpandedName("", "myVar"),
                one);




        Expression exp = compileExpression("$myVar <= 1 or 0 > $myVar");


        Value result = exp.evaluate(context);


        assertTrue("OR expression should result in a boolean value",
                   result instanceof BooleanValue);


        assertTrue("OR expression result should be true",

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    /**
     * Tests max on sequence of integers and doubles
     */
    public void testSequenceOfNumbers() throws ExpressionException {
        final Function function = new MaxFunction();
        Value result = function.invoke(expressionContextMock, new Value[]{
                factory.createSequence(new Item[]{
                      factory.createIntValue(6),
                      factory.createIntValue(3),
                      factory.createDoubleValue(4.3)
                })});

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     * Tests on sequence of strings. Values should be compared using
     * Unicode code point collation (http://www.w3.org/2005/xpath-functions/collation/codepoint).
     */
    public void testSequenceOfStrings() throws ExpressionException {
        final Function function = new MaxFunction();
        Value result = function.invoke(expressionContextMock, new Value[]{
                factory.createSequence(new Item[]{
                      factory.createStringValue("qwe"),
                      factory.createStringValue("rty"),
                      factory.createStringValue("asd")
                })});
        assertTrue(result instanceof StringValue);
        assertEquals("rty", result.stringValue().asJavaString());
    }

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                result);


        Expression exp = compileExpression("$myVar != \"" +
                                           result.stringValue().
                                           asJavaString() + "\"");
        Value result = exp.evaluate(context);


        assertTrue("Inequality expression should result in a boolean value",
                   result instanceof BooleanValue);
        assertFalse("Inequality expression result should be false",
                    ((BooleanValue) result).asJavaBoolean());

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                });


        Expression exp = compileExpression("function:test(((\"a\"),\"b\"), " 
                          + "(\"c\",\"d\"), \"e\")");


        Value eval = exp.evaluate(context);
        
        assertTrue("Expression should result in a string value",
                   eval instanceof StringValue);


        assertEquals("Expression result not as",
                     "(a, b), (c, d), e",  eval.stringValue().asJavaString());
    }

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Examples of com.volantis.xml.expression.Value

Immutable

Null Value

Related Classes of com.volantis.xml.expression.Value