Examples of com.volantis.xml.expression.Expression.evaluate()

Class com.volantis.xml.expression.Expression

Examples of com.volantis.xml.expression.Expression.evaluate()

com.volantis.xml.expression.Expression.evaluate()
Evaluate the expression. @param context The context within which the expression is evaluated. @return The result of the expression. @throws ExpressionException An exception if the exception resulted in anerror.

                new ImmutableExpandedName("", "myVar"),
                factory.createSequence(items));


        Expression exp = compileExpression("$myVar[4]");


        Value result = exp.evaluate(context);


        // result should be an empty sequence
        assertTrue("Result is not a Sequence instance",
                   result instanceof Sequence);

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                factory.createSequence(items));




        Expression exp = compileExpression("$myVar[0]");


        Value result = exp.evaluate(context);


        // result should be an empty sequence
        assertTrue("Result is not a Sequence instance",
                   result instanceof Sequence);

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                pipelineContext.getExpressionContext();


        Expression expression =
                expressionFactory.createExpressionParser().parse(
                    expressionString);
        Value result = expression.evaluate(expressionContext);
        return PipelineExpressionHelper.fnBoolean(result.getSequence())
                .asJavaBoolean();
    }
}

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                factory.createSequence(items));


        Expression exp = compileExpression("$myVar = $mySequence");


        try {
            exp.evaluate(context);


            fail("Should have had an exception thrown");
        } catch (ExpressionException e) {
            // Expected condition
            System.out.println(e);

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        context.getCurrentScope().declareVariable(
                new ImmutableExpandedName("", "right"),
                factory.createSequence(right));


        Expression exp = compileExpression("$left = $right");
        Value result = exp.evaluate(context);


        assertTrue("Sequence comparison failed",
                   ((BooleanValue) result).asJavaBoolean());
    }

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        context.getCurrentScope().declareVariable(
                new ImmutableExpandedName("", "right"),
                factory.createSequence(right));


        Expression exp = compileExpression("$left != $right");
        Value result = exp.evaluate(context);


        // the sequences are not equal as the first item in both
        // sequences are not equal. Note these same 2 sequences
        // are both equal and not equal.
        assertTrue("Sequence comparison failed",

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                result);


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


        assertTrue("Equality expression should result in a boolean value",
                   result instanceof BooleanValue);
        assertTrue("Equality expression result should be true",
                   ((BooleanValue) result).asJavaBoolean());

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    private void doTestOperatorExpression(String operator,
                                          String expression,
                                          boolean expected) throws Exception {
        // compile and evalute the expression
        Expression exp = compileExpression(expression);
        Value result = exp.evaluate(context);


        // check the result type
        assertTrue(operator + " expression should result in a boolean value",
                   result instanceof BooleanValue);

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                new ImmutableExpandedName("", "myVar"),
                one);


        Expression exp = compileExpression("not(3 < $myVar)");


        Value result = exp.evaluate(context);


        assertTrue("fn:not expression should result in a boolean value",
                   result instanceof BooleanValue);


        assertTrue("fn:not expression result should be true",

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     */
    public void testNotWithTrue() throws Exception {


        Expression exp = compileExpression("not(true())");


        Value result = exp.evaluate(context);


        assertTrue("fn:not expression should result in a boolean value",
                   result instanceof BooleanValue);


        assertFalse("fn:not expression result should be false",

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