Package org.apache.camel

Examples of org.apache.camel.Expression.evaluate()

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        assertEquals("<hello id='m123'>world!</hello>", expression.evaluate(exchange, String.class));

        expression = SimpleLanguage.simple("${header.bar} == 123", boolean.class);
        assertEquals(Boolean.TRUE, expression.evaluate(exchange, Object.class));
        expression = SimpleLanguage.simple("${header.bar} == 124", boolean.class);
        assertEquals(Boolean.FALSE, expression.evaluate(exchange, Object.class));
        expression = SimpleLanguage.simple("${header.bar} == 123", Boolean.class);
        assertEquals(Boolean.TRUE, expression.evaluate(exchange, Object.class));
        expression = SimpleLanguage.simple("${header.bar} == 124", Boolean.class);
        assertEquals(Boolean.FALSE, expression.evaluate(exchange, Object.class));
    }
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        expression = SimpleLanguage.simple("${header.bar} == 123", boolean.class);
        assertEquals(Boolean.TRUE, expression.evaluate(exchange, Object.class));
        expression = SimpleLanguage.simple("${header.bar} == 124", boolean.class);
        assertEquals(Boolean.FALSE, expression.evaluate(exchange, Object.class));
        expression = SimpleLanguage.simple("${header.bar} == 123", Boolean.class);
        assertEquals(Boolean.TRUE, expression.evaluate(exchange, Object.class));
        expression = SimpleLanguage.simple("${header.bar} == 124", Boolean.class);
        assertEquals(Boolean.FALSE, expression.evaluate(exchange, Object.class));
    }

    public void testResultType() throws Exception {
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        expression = SimpleLanguage.simple("${header.bar} == 124", boolean.class);
        assertEquals(Boolean.FALSE, expression.evaluate(exchange, Object.class));
        expression = SimpleLanguage.simple("${header.bar} == 123", Boolean.class);
        assertEquals(Boolean.TRUE, expression.evaluate(exchange, Object.class));
        expression = SimpleLanguage.simple("${header.bar} == 124", Boolean.class);
        assertEquals(Boolean.FALSE, expression.evaluate(exchange, Object.class));
    }

    public void testResultType() throws Exception {
        assertEquals(123, SimpleLanguage.simple("${header.bar}", int.class).evaluate(exchange, Object.class));
        assertEquals("123", SimpleLanguage.simple("${header.bar}", String.class).evaluate(exchange, Object.class));
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    public void testBodyExpressionNotStringType() throws Exception {
        exchange.getIn().setBody(123);
        Expression exp = SimpleLanguage.simple("${body}");
        assertNotNull(exp);
        Object val = exp.evaluate(exchange, Object.class);
        assertIsInstanceOf(Integer.class, val);
        assertEquals(123, val);
    }

    public void testSimpleExpressions() throws Exception {
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    protected void assertExpressionResultInstanceOf(String expressionText, Class<?> expectedType) {
        Language language = assertResolveLanguage(getLanguageName());
        Expression expression = language.createExpression(expressionText);
        assertNotNull("Cannot assert type when no type is provided", expectedType);
        assertNotNull("No Expression could be created for text: " + expressionText + " language: " + language, expression);
        Object answer = expression.evaluate(exchange, Object.class);
        assertIsInstanceOf(expectedType, answer);
    }

    public static final class Animal {
        private String name;
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    //protected CamelContext context = new DefaultCamelContext();
    protected Exchange exchange;

    public void testExpression() throws Exception {
        Expression expression = sql("SELECT * FROM org.apache.camel.builder.sql.Person where city = 'London'");
        Object value = expression.evaluate(exchange);
        assertIsInstanceOf(List.class, value);

        List list = (List)value;
        assertEquals("List size", 2, list.size());

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        }
    }

    public void testExpressionWithHeaderVariable() throws Exception {
        Expression expression = sql("SELECT * FROM org.apache.camel.builder.sql.Person where name = :fooHeader");
        Object value = expression.evaluate(exchange);
        assertIsInstanceOf(List.class, value);

        List<Person> list = (List<Person>)value;
        assertEquals("List size", 1, list.size());

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    public void testExpression() throws Exception {
        Language language = assertResolveLanguage(getLanguageName());

        Expression expression = language.createExpression("SELECT * FROM org.apache.camel.builder.sql.Person where city = 'London'");       
        Object value = expression.evaluate(exchange);
        assertIsInstanceOf(List.class, value);

        List list = (List)value;
        assertEquals("List size", 2, list.size());

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    @SuppressWarnings("unchecked")
    public void testExpressionWithHeaderVariable() throws Exception {
        Language language = assertResolveLanguage(getLanguageName());

        Expression expression = language.createExpression("SELECT * FROM org.apache.camel.builder.sql.Person where name = :fooHeader");
        Object value = expression.evaluate(exchange);
        assertIsInstanceOf(List.class, value);
        List<Person> list = (List<Person>)value;
        assertEquals("List size", 1, list.size());

        for (Person person : list) {
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                Exchange exchange = getReceivedExchange(0);
                assertTrue("No exchange received for counter: " + 0, exchange != null);

                Object actualBody = exchange.getIn().getBody();
                Expression exp = createExpression(getCamelContext());
                Object expectedBody = exp.evaluate(exchange, Object.class);

                assertEquals("Body of message: " + 0, expectedBody, actualBody);
            }
        };
        expects(clause);
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