Examples of com.volantis.xml.expression.Function.invoke()

Class com.volantis.xml.expression.Function

Examples of com.volantis.xml.expression.Function.invoke()

com.volantis.xml.expression.Function.invoke()
Invokes the function. @param context The context within which the function is beinginvoked. @param arguments The arguments to the function specified as an array of{@link Value}s. Neither the array nor any of the arguments will be null. @return The {@link Value} that is the result of the expression, thismust never be null. @throws ExpressionException If there was a problem invoking thefunction.

        ExpressionFactory factory = context.getFactory();
        Function tokenize = new TokenizeFunction();
        Sequence sequence = createSequence(factory,
                new String[]{"abcabcabcabcabcabcabcabcabcabc"});
        Value pattern = factory.createStringValue("abc");
        Value retVal = tokenize.invoke(context,
                new Value[]{sequence, pattern});


        final Sequence retSeq = retVal.getSequence();


        doSequenceEquality(retSeq,

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        ExpressionFactory factory = context.getFactory();
        Function tokenize = new TokenizeFunction();
        Sequence sequence = createSequence(factory,
                new String[]{"xxxxxxxxxx"});
        Value pattern = factory.createStringValue("xxx");
        Value retVal = tokenize.invoke(context,
                new Value[]{sequence, pattern});


        final Sequence retSeq = retVal.getSequence();


        doSequenceEquality(retSeq, new String[]{"", "", "", "x"});

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     */
    public void testNoArguments() throws Exception {
        try {
            ExpressionContext context = createExpressionContext();
            Function tokenize = new TokenizeFunction();
            Value retVal = tokenize.invoke(context, new Value[]{});
            fail("Should have failed when invoked with no arguments");
        } catch (ExpressionException expected) {
        }
    }

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            ExpressionContext context = createExpressionContext();
            ExpressionFactory factory = context.getFactory();
            Sequence sequence = createSequence(factory,
                    new String[]{"xxxxxxxxxx"});
            Function tokenize = new TokenizeFunction();
            Value retVal = tokenize.invoke(context, new Value[]{sequence});
            fail("Should have failed when invoked with only one argument");
        } catch (ExpressionException expected) {
        }
    }

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            ExpressionFactory factory = context.getFactory();
            Sequence sequence = createSequence(factory,
                    new String[]{"xxxxxxxxxx"});
            Value pattern = factory.createStringValue("xxx");
            Function tokenize = new TokenizeFunction();
            Value retVal = tokenize.invoke(context,
                    new Value[]{sequence, pattern, pattern});
            fail("Should have failed when invoked with three arguments");
        } catch (ExpressionException expected) {
        }
    }

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     * arguments
     */
    public void testNoArguments() {
        final Function function = new MinFunction();
        try {
            function.invoke(expressionContextMock, new Value[]{});
            fail("Exception wasn't thrown when min was invoked with 0 arguments");
        } catch (ExpressionException e) {
            //do nothing, expected situation
        }
    }

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     * two arguments
     */
    public void testTwoArguments() {
        final Function function = new MinFunction();
        try {
            function.invoke(expressionContextMock, new Value[]{
                    factory.createSequence(new Item[]{}), 
                    factory.createDoubleValue(20.0)});
            fail("Exception wasn't thrown when min was invoked with 2 arguments");
        } catch (ExpressionException e) {
            //do nothing, expected situation

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

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    /**
     * Tests min on sequence of integers and doubles
     */
    public void testSequenceOfNumbers() throws ExpressionException {
        final Function function = new MinFunction();
        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 MinFunction();
        Value result = function.invoke(expressionContextMock, new Value[]{
                factory.createSequence(new Item[]{
                      factory.createStringValue("qwe"),
                      factory.createStringValue("rty"),
                      factory.createStringValue("asd")
                })});

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