Package org.mule.expression.transformers

Examples of org.mule.expression.transformers.ExpressionArgument

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    {
        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);
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        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);
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    {
        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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    {
        BeanBuilderTransformer transformer = (BeanBuilderTransformer) muleContext.getRegistry().lookupTransformer(transformerName);
        assertNotNull(transformer);
        assertNotNull(transformer.getArguments());
        assertEquals(3, transformer.getArguments().size());
        ExpressionArgument arg1 = transformer.getArguments().get(0);
        assertEquals("brand", arg1.getName());
        assertEquals("message", arg1.getEvaluator());
        assertEquals("payload", arg1.getExpression());
        assertFalse(arg1.isOptional());

        ExpressionArgument arg2 = transformer.getArguments().get(1);
        assertEquals("segments", arg2.getName());
        assertEquals("header", arg2.getEvaluator());
        assertEquals("SEGMENTS", arg2.getExpression());
        assertTrue(arg2.isOptional());
    }
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    public ExpressionArgument parse(Annotation annotation, Class<?> parameterType)
    {
        Evaluator evaluator = annotation.annotationType().getAnnotation(Evaluator.class);
        if (evaluator != null)
        {
            return new ExpressionArgument(null, new ExpressionConfig(((Expr) annotation).value(),
                    evaluator.value(), null), ((Expr) annotation).optional(), parameterType);
        }
        else
        {
            throw new IllegalArgumentException("The @Evaluator annotation must be set on an Expression Annotation");
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            {
                //Match the param type and attempt to auto convert
                val += "(" + parameterType.getName() + ")";
            }

            return new ExpressionArgument(null, new ExpressionConfig(val, evaluator.value(), null),
                    muleAnnotation.optional(), parameterType);
        }
        else
        {
            throw new IllegalArgumentException("The @Evaluator annotation must be set on an Expression Annotation");
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            String expression = ((Lookup) annotation).value();
            if(StringUtils.isEmpty(expression))
            {
                expression  = "type:" + parameterType.getName();
            }
            return new ExpressionArgument(null, new ExpressionConfig(expression,
                    evaluator.value(), null), ((Lookup) annotation).optional(), parameterType);
        }
        else
        {
            throw new IllegalArgumentException("The @Evaluator annotation must be set on an Expression Annotation");
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    public ExpressionArgument parse(Annotation annotation, Class<?> parameterType)
    {
        Evaluator evaluator = annotation.annotationType().getAnnotation(Evaluator.class);
        if (evaluator != null)
        {
            return new ExpressionArgument(null, new ExpressionConfig(((Function) annotation).value(), evaluator.value(), null), false, parameterType);
        }
        else
        {
            throw new IllegalArgumentException("The @Evaluator annotation must be set on an Expression Annotation");
        }
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        {
            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);
                }
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            {
                //We only set optional if we're dealing with a single header, List and Maps of attachments can contain
                //optional names but we will always return a Map or List even if it is empty
                optional = true;
            }
            return new ExpressionArgument(null, new ExpressionConfig(expr, eval, null), optional, parameterType);
        }
        else
        {
            throw new IllegalArgumentException("The @Evaluator annotation must be set on an Expression Annotation");
        }
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Related Classes of org.mule.expression.transformers.ExpressionArgument

  • org.mule.api.transformer.Transformer
  • org.mule.config.expression.ExprAnnotationParser
  • org.mule.config.expression.ExpressionAnnotationsHelper
  • org.mule.config.expression.FunctionAnnotationParser
  • org.mule.config.expression.LookupAnnotationParser
  • org.mule.config.expression.MuleAnnotationParser
  • org.mule.config.parsers.InboundAttachmentsAnnotationParser
  • org.mule.config.parsers.InboundHeadersAnnotationParser
  • org.mule.config.parsers.OutboundAttachmentsAnnotationParser
  • org.mule.config.parsers.OutboundHeadersAnnotationParser
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