Examples of com.volantis.xml.expression.ExpressionFactory

com.volantis.xml.expression.ExpressionFactory
A class for creating expression specific objects.
Note: it is not possible to pass a null value to the overloaded {@link #createSequence} functions without an explicitcast. However, it is better to use {@link Sequence.EMPTY} to obtain anempty sequence. The same issue exists for the methods {@link #createDateTimeValue}, {@link #createDateValue} and {@link #createTimeValue}.

Warning: This is a facade provided for use by user code, not for implementation in user code.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.
@volantis-api-include-in PublicAPI @volantis-api-include-in ProfessionalServicesAPI @volantis-api-include-in InternalAPI @mock.generate

    /**
     * Tests the empty sequence input gives an empty sequence result.
     */
    public void testEmptySequenceInput() throws Exception {
        ExpressionContext context = createExpressionContext();
        ExpressionFactory factory = context.getFactory();
        Function tokenize = new TokenizeFunction();
        Sequence sequence = Sequence.EMPTY;
        Value search = factory.createStringValue("a");
        Value retVal = tokenize.invoke(context, new Value[]{sequence, search});


        final Sequence retSeq = retVal.getSequence();


        // Should have returned ()

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    /**
     * Tests the empty string input gives an empty sequence result.
     */
    public void testEmptyStringInput() throws Exception {
        ExpressionContext context = createExpressionContext();
        ExpressionFactory factory = context.getFactory();
        Function tokenize = new TokenizeFunction();
        Sequence sequence = createSequence(factory,
                new String[]{""});
        Value search = factory.createStringValue("a");
        Value retVal = tokenize.invoke(context, new Value[]{sequence, search});


        final Sequence retSeq = retVal.getSequence();


        // Should have returned ()

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    /**
     * Tests that the empty pattern throws an ExpressionException.
     */
    public void testEmptyPattern() throws Exception {
        ExpressionContext context = createExpressionContext();
        ExpressionFactory factory = context.getFactory();
        Function tokenize = new TokenizeFunction();
        Sequence sequence = createSequence(factory,
                new String[]{"my search string"});
        Value pattern = factory.createStringValue("");
        try {
            Value retVal = tokenize.invoke(context,
                    new Value[]{sequence, pattern});
            fail("An empty pattern should result in an ExpressionException");
        } catch (ExpressionException ee) {

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    /**
     * Tests that pattern at start gives an empty string token at start.
     */
    public void testStartsWithPattern() throws Exception {
        ExpressionContext context = createExpressionContext();
        ExpressionFactory factory = context.getFactory();
        Function tokenize = new TokenizeFunction();
        Sequence sequence = createSequence(factory,
                new String[]{"abcdefghicat"});
        Value pattern = factory.createStringValue("abc");
        Value retVal = tokenize.invoke(context,
                new Value[]{sequence, pattern});


        final Sequence retSeq = retVal.getSequence();

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    /**
     * Tests that pattern at end gives an empty string token at end.
     */
    public void testEndsWithPattern() throws Exception {
        ExpressionContext context = createExpressionContext();
        ExpressionFactory factory = context.getFactory();
        Function tokenize = new TokenizeFunction();
        Sequence sequence = createSequence(factory,
                new String[]{"abcdefghicat"});
        Value pattern = factory.createStringValue("cat");
        Value retVal = tokenize.invoke(context,
                new Value[]{sequence, pattern});


        final Sequence retSeq = retVal.getSequence();

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    /**
     * Tests a regexp whitespace pattern.
     */
    public void testWhitespacePattern() throws Exception {
        ExpressionContext context = createExpressionContext();
        ExpressionFactory factory = context.getFactory();
        Function tokenize = new TokenizeFunction();
        Sequence sequence = createSequence(factory,
                new String[]{"the cat  sat   on    the     mat"});
        Value pattern = factory.createStringValue("\\s+");
        Value retVal = tokenize.invoke(context,
                new Value[]{sequence, pattern});


        final Sequence retSeq = retVal.getSequence();

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    /**
     * Tests a 'comma x' pattern.
     */
    public void testCommaPattern() throws Exception {
        ExpressionContext context = createExpressionContext();
        ExpressionFactory factory = context.getFactory();
        Function tokenize = new TokenizeFunction();
        Sequence sequence = createSequence(factory,
                new String[]{"thexcat,x,xxxsatxxxxon,thexxxxxmat"});
        Value pattern = factory.createStringValue(",x");
        Value retVal = tokenize.invoke(context,
                new Value[]{sequence, pattern});


        final Sequence retSeq = retVal.getSequence();

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     * Tests when input matches pattern, a sequence with an empty string
     * results.
     */
    public void testStringEqualsPattern() throws Exception {
        ExpressionContext context = createExpressionContext();
        ExpressionFactory factory = context.getFactory();
        Function tokenize = new TokenizeFunction();
        Sequence sequence = createSequence(factory,
                new String[]{"one big long missspelt sentence"});
        Value pattern =
                factory.createStringValue("one big long missspelt sentence");
        Value retVal = tokenize.invoke(context,
                new Value[]{sequence, pattern});


        final Sequence retSeq = retVal.getSequence();

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public class ErrorSourceIDFunction extends AbstractErrorFunction {


    public Value invoke(ExpressionContext context, Value[] arguments) throws ExpressionException {
        assertArgumentCount(arguments, 0);
        SAXParseException x = getException(context);
        ExpressionFactory factory = context.getFactory();
        Value result = Sequence.EMPTY;


        if (x instanceof XMLPipelineException) {
            XMLPipelineException pipelineException = (XMLPipelineException) x;
            String sourceID = pipelineException.getErrorSourceID();
            if (sourceID != null) {
                result = factory.createStringValue(sourceID);
            }
        }


        return result;
    }

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    public Value invoke(ExpressionContext context, Value[] arguments) throws ExpressionException {
        assertArgumentCount(arguments, 1);
        StringValue arg = (StringValue) arguments[0];
        SAXParseException x = getException(context);
        ExpressionFactory factory = context.getFactory();
        Value result = Sequence.EMPTY;


        if (x instanceof XMLPipelineException) {
            XMLPipelineException pipelineException = (XMLPipelineException) x;
            Map errorProperties = pipelineException.getErrorProperties();
            if (errorProperties != null) {
                Object value = errorProperties.get(arg.asJavaString());
                if (value != null) {
                    result = factory.createStringValue(value.toString());
                }
            }
        }


        return result;

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