Package org.mule.expression.transformers

Examples of org.mule.expression.transformers.ExpressionTransformer

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     *
     * @throws TransformerException
     */
    public void testExpressionEvaluationClassLoader() throws ClassNotFoundException, TransformerException
    {
        ExpressionTransformer transformer = new ExpressionTransformer();
        transformer.setMuleContext(muleContext);
        transformer.addArgument(new ExpressionArgument("test", new ExpressionConfig(
            "payload instanceof MyClass", "groovy", null), false));

        ClassLoader originalClassLoader = Thread.currentThread().getContextClassLoader();
        try
        {
            Thread.currentThread().setContextClassLoader(new MyClassClassLoader());
            transformer.initialise();
        }
        catch (Exception e)
        {
            fail(e.getMessage());
        }
        finally
        {
            Thread.currentThread().setContextClassLoader(originalClassLoader);
        }

        assertFalse((Boolean) transformer.transform("test"));

    }
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{
    protected static Log logger = LogFactory.getLog(ExpressionAnnotationsHelper.class);

    public static ExpressionTransformer getTransformerForMethodWithAnnotations(Method method, MuleContext context) throws TransformerException, InitialisationException
    {
        ExpressionTransformer trans = new ExpressionTransformer();
        trans.setMuleContext(context);

        Annotation[][] annotations = method.getParameterAnnotations();

        for (int i = 0; i < annotations.length; i++)
        {
            Annotation[] annotation = annotations[i];
            for (int j = 0; j < annotation.length; j++)
            {
                Annotation ann = annotation[j];
                ExpressionArgument arg = parseAnnotation(ann, method.getParameterTypes()[i], context);

                if (arg != null)
                {
                    trans.addArgument(arg);
                }
            }
        }
        trans.initialise();
        return trans;
    }
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        return "org/mule/test/transformers/expression-transformers-test.xml";
    }

    public void testTransformerConfig() throws Exception
    {
        ExpressionTransformer transformer = (ExpressionTransformer) muleContext.getRegistry().lookupTransformer("testTransformer");
        assertNotNull(transformer);
        assertNotNull(transformer.getArguments());
        assertEquals(2, transformer.getArguments().size());
        ExpressionArgument arg1 = transformer.getArguments().get(0);
        assertEquals("payload", arg1.getEvaluator());
        assertEquals("org.mule.tck.testmodels.fruit.FruitBasket", arg1.getExpression());
        assertFalse(arg1.isOptional());

        ExpressionArgument arg2 = transformer.getArguments().get(1);
        assertEquals("headers", arg2.getEvaluator());
        assertEquals("foo,bar?", arg2.getExpression());
        assertTrue(arg2.isOptional());

    }
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    }

    public void testExecutionWithCorrectMessage() throws Exception
    {
        ExpressionTransformer transformer = (ExpressionTransformer) muleContext.getRegistry().lookupTransformer("testTransformer");
        Map<String, Object> props = new HashMap<String, Object>();
        props.put("foo", "moo");
        props.put("bar", "mar");

        MuleMessage message = new DefaultMuleMessage(new FruitBowl(new Apple(), new Banana()), props, muleContext);

        Object result = transformer.transform(message);
        assertNotNull(result);
        assertTrue(result.getClass().isArray());
        Object o1 = ((Object[]) result)[0];
        assertTrue(o1 instanceof FruitBasket);
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        assertEquals("mar", map.get("bar"));
    }

    public void testExecutionWithPartialMissingOptionalParams() throws Exception
    {
        ExpressionTransformer transformer = (ExpressionTransformer) muleContext.getRegistry().lookupTransformer("testTransformer");
        Map<String, Object> props = new HashMap<String, Object>();
        props.put("foo", "moo");

        MuleMessage message = new DefaultMuleMessage(new FruitBowl(new Apple(), new Banana()), props, muleContext);

        Object result = transformer.transform(message);
        assertNotNull(result);
        assertTrue(result.getClass().isArray());
        Object o1 = ((Object[]) result)[0];
        assertTrue(o1 instanceof FruitBasket);
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        assertEquals("moo", map.get("foo"));
    }

    public void testExecutionWithAllMissingOptionalParams() throws Exception
    {
        ExpressionTransformer transformer = (ExpressionTransformer) muleContext.getRegistry().lookupTransformer("testTransformer");

        MuleMessage message = new DefaultMuleMessage(new FruitBowl(new Apple(), new Banana()), muleContext);

        Object result = transformer.transform(message);
        assertNotNull(result);
        assertTrue(result.getClass().isArray());
        Object o1 = ((Object[]) result)[0];
        assertTrue(o1 instanceof FruitBasket);
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        assertNull(((Object[]) result)[1]);
    }

    public void testTransformerConfigWithSingleArgument() throws Exception
    {
        ExpressionTransformer transformer = (ExpressionTransformer) muleContext.getRegistry().lookupTransformer("testTransformer2");
        Map<String, Object> props = new HashMap<String, Object>();
        props.put("foo", "moo");
        props.put("bar", "mar");

        MuleMessage message = new DefaultMuleMessage(new FruitBowl(new Apple(), new Banana()), props, muleContext);

        Object result = transformer.transform(message);
        assertNotNull(result);
        assertFalse(result.getClass().isArray());
        assertTrue(result instanceof List<?>);
        List<?> list = (List<?>) result;
        assertTrue(list.contains("moo"));
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        assertTrue(list.contains("mar"));
    }

    public void testTransformerConfigWithSingleArgumentShortcutConfig() throws Exception
    {
        ExpressionTransformer transformer = (ExpressionTransformer) muleContext.getRegistry().lookupTransformer("testTransformer4");
        Map<String, Object> props = new HashMap<String, Object>();
        props.put("foo", "moo");
        props.put("bar", "mar");

        MuleMessage message = new DefaultMuleMessage(new FruitBowl(new Apple(), new Banana()), props, muleContext);

        Object result = transformer.transform(message);
        assertNotNull(result);
        assertFalse(result.getClass().isArray());
        assertTrue(result instanceof List<?>);
        List<?> list = (List<?>) result;
        assertTrue(list.contains("moo"));
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        assertTrue(list.contains("mar"));
    }
   
    public void testExecutionWithInCorrectMessage() throws Exception
    {
        ExpressionTransformer transformer = (ExpressionTransformer) muleContext.getRegistry().lookupTransformer("testTransformer2");
        Map<String, Object> props = new HashMap<String, Object>();
        props.put("foo", "moo");

        MuleMessage message = new DefaultMuleMessage(new FruitBowl(new Apple(), new Banana()), props, muleContext);

        try
        {
            transformer.transform(message);
            fail("Not all headers present, the transform should have failed");
        }
        catch (RequiredValueException e)
        {
            //expected
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        return payload;
    }

    protected Object[] getPayloadFromMessageWithAnnotations(Method method, MuleEventContext context) throws TransformerException, InitialisationException
    {
        ExpressionTransformer trans = (ExpressionTransformer) transformerCache.get(method);
        if (trans == null)
        {
            trans = ExpressionAnnotationsHelper.getTransformerForMethodWithAnnotations(method, context.getMuleContext());
            transformerCache.put(method, trans);
        }

        Object o = trans.transform(context.getMessage());
        if (o instanceof NullPayload)
        {
            return new Object[]{null};
        }
        else if (o.getClass().isArray())
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Related Classes of org.mule.expression.transformers.ExpressionTransformer

  • org.mule.config.expression.ExpressionAnnotationsHelper
  • org.mule.construct.Validator
  • org.mule.impl.model.resolvers.AnnotatedEntryPointResolver
  • org.mule.test.transformers.ExpressionTransformerTestCase
  • org.mule.transformers.simple.ExpressionTransformerELTestCase
  • org.mule.transformers.simple.ExpressionTransformerTestCase
  • org.mule.api.transformer.TransformerException
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