Examples of com.volantis.xml.expression.Expression

com.volantis.xml.expression.Expression
A parsed 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Warning: This is a facade provided for use by user code, not for implementation in user code.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.

Implementations of this interface must be thread safe and must not maintain any evaluation specific state as they may be evaluated simultaneously by multiple threads.

Expressions must have no context specific information in them. Where it is necessary to refer to named items the names must be stored as QNames which are expanded at evaluation time. This means that a given string will always result in the same Expression expression no matter where it is used.
@volantis-api-include-in PublicAPI @volantis-api-include-in ProfessionalServicesAPI @volantis-api-include-in InternalAPI

                                              value.createImmutable();


        serviceDefMock.expects.getCharacteristic(charateristic).returns(listVal);


        // invoke the function
        Expression expression = parser.parse(getFunctionQName() +
                                             "('" + charateristic + "')");


        // evalute the expression
        Value result = expression.evaluate(expressionContext);


        // Value returned should be a StringValue
        assertTrue("return value should be a DoubleValue instance",
                   result instanceof Sequence);

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                                              value.createImmutable();


        serviceDefMock.expects.getCharacteristic(charateristic).returns(setVal);


        // invoke the function
        Expression expression = parser.parse(getFunctionQName() +
                                             "('" + charateristic + "')");


        // evalute the expression
        Value result = expression.evaluate(expressionContext);


        // Value returned should be a StringValue
        assertTrue("return value should be a DoubleValue instance",
                   result instanceof Sequence);

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                                                 value.createImmutable();


        serviceDefMock.expects.getCharacteristic(charateristic).returns(structVal);


        // invoke the function
        Expression expression = parser.parse(getFunctionQName() +
                                             "('" + charateristic + "')");


        // evalute the expression
        Value result = expression.evaluate(expressionContext);


        // Value returned should be a StringValue
        assertTrue("return value should be a DoubleValue instance",
                   result instanceof Sequence);

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                                              value.createImmutable();


        serviceDefMock.expects.getCharacteristic(charateristic).returns(quantityVal);


        // invoke the function
        Expression expression = parser.parse(getFunctionQName() +
                                             "('" + charateristic + "')");


        try {
            // evalute the expression
            Value result = expression.evaluate(expressionContext);
            fail("Do not expect QuantintyValues to be supported");
        } catch (IllegalArgumentException e) {
            // expected
        }
    }

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     * Test invoke provides the first value for headers that have
     * mulitple values.
     * @throws Exception
     */
    public void testInvokeIgnoreSecondValue() throws Exception {
        Expression expression = parser.parse(getFunctionQName() +
            "('name')");


        addSingleValueExpectations("name", "value");
        addSingleValueExpectations("name", "other");


        Value result = expression.evaluate(expressionContext);


        Assert.assertEquals("Result not as",
                     "value",
                     result.stringValue().asJavaString());
    }

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    }


    public RuntimePolicyReferenceExpression parseUnquotedExpression(String unquotedExpression) {
        ExpressionParser parser = getExpressionParser();


        Expression expression;
        try {
            expression = parser.parse(unquotedExpression);
        } catch (ExpressionException e) {
            throw new ExtendedRuntimeException(e);
        }

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            MarinerRequestContext mrc = pageContext.getRequestContext();
            ExpressionContext ec =
                    MCSExpressionHelper.getExpressionContext(mrc);


            try {
                Expression expr = MCSExpressionHelper.createUnquotedExpression(
                        stem, mrc);


                if (expr != null) {
                    Value value = expr.evaluate(ec); 


                    if (value instanceof FormatReferenceValue) {
                        ref = ((FormatReferenceValue)value).
                                asFormatReference();
                    } else {

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     * Test invoke provides multiple values for headers that have
     * mulitple values.
     * @throws Exception
     */
    public void testInvokeMultiValue() throws Exception {
        Expression expression = parser.parse(getFunctionQName() +
            "('name')");


        addMultiValueExpectations("name", new String[] {
            "value", "other"
        });


        Value result = expression.evaluate(expressionContext);


        Assert.assertTrue("Result not a sequence",
                   result instanceof Sequence);


        Assert.assertEquals("Result not as",

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    /**
     * Ensure that multiple values can be accessed via the [number] predicate
     * @throws Exception if an error occurs
     */
    public void testInvokeSecondValueWithPredicate() throws Exception {
        Expression expression = parser.parse(getFunctionQName() +
            "('name', 'default')[2]");


        addMultiValueExpectations("name", new String[] {
                    "value", "another value"
        });


        Value result = expression.evaluate(expressionContext);


        Assert.assertTrue("Result not a sequence",
                   result instanceof Sequence);


        Assert.assertEquals("Result not as",

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    /**
     * Test invoke with no arguments.
     * @throws Exception
     */
    public void testInvokeNoArgs() throws Exception {
        Expression expression = parser.parse(getFunctionQName() + "()");
        try {
            expression.evaluate(expressionContext);


            fail("Should have had an exception thrown when evaluating " +
                 "expression");
        } catch (ExpressionException e) {
            // Expected condition

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com.volantis.mcs.expression.functions.request.MultiValueFunctionTestAbstract

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