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Warning: This is a facade provided for use by user code, not for implementation in user code.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

                pipelineContext.getExpressionContext();


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

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    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 ()
        assertSame(retSeq, Sequence.EMPTY);
    }

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        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 ()
        assertSame(retSeq, Sequence.EMPTY);
    }

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        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) {
            // This exception is expected
        }

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        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();


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

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        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();


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

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        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();


        doSequenceEquality(retSeq,
                new String[]{"the", "cat", "sat", "on", "the", "mat"});
    }

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        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();


        doSequenceEquality(retSeq,
                new String[]{"thexcat", "", "xxsatxxxxon,thexxxxxmat"});
    }

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        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();


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

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


        final Sequence retSeq = retVal.getSequence();


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

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Examples of com.volantis.xml.expression.Value

Immutable

Null Value

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