Package org.mule.expression.transformers

Examples of org.mule.expression.transformers.ExpressionTransformer

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    }

    @Test
    public void testNullPayloadIsConsideredAsNullResult() throws Exception
    {
        ExpressionTransformer transformer = new ExpressionTransformer();
        transformer.setMuleContext(muleContext);
        transformer.setReturnSourceIfNull(true);
        ExpressionConfig config = new ExpressionConfig("null", "groovy", null);
        ExpressionArgument argument = new ExpressionArgument("test", config, false);
        argument.setMuleContext(muleContext);
        transformer.addArgument(argument);

        MuleMessage message = new DefaultMuleMessage("Test", muleContext);
        Object result = transformer.transformMessage(message, null);
        assertTrue(result instanceof MuleMessage);
        MuleMessage transformedMessage = (MuleMessage) result;

        assertEquals("Test", transformedMessage.getPayload());
    }
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    }

    @Test
    public void testNullPayloadIsConsideredAsNullResultEL() throws Exception
    {
        ExpressionTransformer transformer = new ExpressionTransformer();
        transformer.setMuleContext(muleContext);
        transformer.setReturnSourceIfNull(true);
        ExpressionConfig config = new ExpressionConfig("null", null, null);

        // MVL doesn't return NullPayload but rather null.  So 'optional' needs to be true.
        ExpressionArgument argument = new ExpressionArgument("test", config, true);
        argument.setMuleContext(muleContext);
        transformer.addArgument(argument);

        MuleMessage message = new DefaultMuleMessage("Test", muleContext);
        Object result = transformer.transformMessage(message, null);
        assertTrue(result instanceof MuleMessage);
        MuleMessage transformedMessage = (MuleMessage) result;

        assertEquals("Test", transformedMessage.getPayload());
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        return "org/mule/test/transformers/expression-transformers-test.xml";
    }

    private void testTransformerConfig(String transformerName) throws Exception
    {
        ExpressionTransformer transformer = (ExpressionTransformer) muleContext.getRegistry().lookupTransformer(transformerName);
        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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        testExecutionWithCorrectMessage("testTransformerInline");
    }

    private void testExecutionWithCorrectMessage(String transformerName) throws Exception
    {
        ExpressionTransformer transformer = (ExpressionTransformer) muleContext.getRegistry().lookupTransformer(transformerName);
        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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    }

    @Test
    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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    }

    @Test
    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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    }

    @Test
    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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        testTransformerConfigWithSingleArgumentShortcutConfig("testTransformer4Inline");
    }

    private void testTransformerConfigWithSingleArgumentShortcutConfig(String transformerName) throws Exception
    {
        ExpressionTransformer transformer = (ExpressionTransformer) muleContext.getRegistry().lookupTransformer(transformerName);
        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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    }

    @Test(expected = RequiredValueException.class)
    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);

        transformer.transform(message);
        fail("Not all headers present, the transform should have failed");
    }
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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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