Examples of org.mule.processor.chain.DefaultMessageProcessorChainBuilder.build()

Class org.mule.processor.chain.DefaultMessageProcessorChainBuilder

Examples of org.mule.processor.chain.DefaultMessageProcessorChainBuilder.build()

org.mule.processor.chain.DefaultMessageProcessorChainBuilder.build()
This builder supports the chaining together of message processors that intercept and also those that don't. While one can iterate over message processor intercepting message processors need to be chained together. One solution is make all message processors intercepting (via adaption) and chain them all together, this results in huge stack traces and recursive calls with adaptor. The alternative is to build the chain in such a way that we iterate when we can and chain where we need to.
We iterate over the list of message processor to be chained together in reverse order collecting up those that can be iterated over in a temporary list, as soon as we have an intercepting message processor we create a DefaultMessageProcessorChain using the temporary list and set it as a listener of the intercepting message processor and then we continue with the algorithm

        builder.chain(
            new StringAppendTransformer("1"),
            new ResponseMessageProcessorAdapter(new DefaultMessageProcessorChainBuilder().chain(
                new StringAppendTransformer("a"), new StringAppendTransformer("b")).build()),
            new StringAppendTransformer("2"));
        assertEquals("012ab", builder.build().process(getTestEventUsingFlow("0")).getMessageAsString());
    }


    @Test
    public void testResponseAdaptorNestedChainReturnsNull() throws MuleException, Exception
    {

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        builder.chain(
            new StringAppendTransformer("1"),
            new ResponseMessageProcessorAdapter(new DefaultMessageProcessorChainBuilder().chain(
                new StringAppendTransformer("a"), new StringAppendTransformer("b"), new ReturnNullMP())
                .build()), new StringAppendTransformer("2"));
        assertEquals("012", builder.build().process(getTestEventUsingFlow("0")).getMessageAsString());
    }


    private static class ReturnNullMP implements MessageProcessor
    {
        public MuleEvent process(MuleEvent event) throws MuleException

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        {
            chainBuilder.chain(next);
        }
        try
        {
            chain = chainBuilder.build();
        }
        catch (MuleException e)
        {
            throw new InitialisationException(e, this);
        }

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                    {
                        return invokeInternal(event);
                    }
                });


                interceptorChain = chainBuilder.build();
                if (interceptorChain instanceof MuleContextAware)
                {
                    ((MuleContextAware) interceptorChain).setMuleContext(muleContext);
                }
                if (interceptorChain instanceof Initialisable)

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    protected void createMessageProcessorChain() throws MuleException
    {
        DefaultMessageProcessorChainBuilder builder = new DefaultMessageProcessorChainBuilder(flowConstruct);
        builder.chain(processors);
        builder.chain(listener);
        listener = builder.build();
    }


    public Long getTimeout()
    {
        return timeout;

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    {
        DefaultMessageProcessorChainBuilder builder = new DefaultMessageProcessorChainBuilder(this);
        builder.setName("Service '" + name + "' Processor Chain");
        builder.chain(getServiceStartedAssertingMessageProcessor());
        addMessageProcessors(builder);
        messageProcessorChain = builder.build();
    }


    protected MessageProcessor getServiceStartedAssertingMessageProcessor()
    {
        return new ProcessIfStartedWaitIfPausedMessageProcessor(this, lifecycleManager.getState());

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                }
                return processNext(event);
            }
        });
        builder.chain(listener);
        listener = builder.build();
    }


    @Override
    public void start() throws MuleException
    {

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        DefaultMessageProcessorChainBuilder builder = new DefaultMessageProcessorChainBuilder(this);
        builder.setName("'" + getName() + "' processor chain");
        configurePreProcessors(builder);
        configureMessageProcessors(builder);
        configurePostProcessors(builder);
        return builder.build();
    }


    protected void configurePreProcessors(MessageProcessorChainBuilder builder) throws MuleException
    {
        // Template method

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                }
            });
            ((EndpointAware)async).setEndpoint(endpoint);
            builder.chain(async);
            builder.chain(new DispatcherMessageProcessor(endpoint));
            return builder.build();
        }
    }
    
    public MessageExchangePattern getDefaultExchangePattern()
    {

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        // Compose request and response chains. We do this so that if the request
        // chain returns early the response chain is still invoked.
        DefaultMessageProcessorChainBuilder compositeChainBuilder = new EndpointMessageProcessorChainBuilder(endpoint, flowConstruct);
        compositeChainBuilder.setName("InboundEndpoint '"+ endpoint.getEndpointURI().getUri() +"' composite request/response chain");
        compositeChainBuilder.chain(requestChainBuilder.build(), responseChainBuilder.build());
        return compositeChainBuilder.build();
    }


    public MessageProcessor createOutboundMessageProcessorChain(OutboundEndpoint endpoint, FlowConstruct flowConstruct, MessageProcessor target) throws MuleException
    {
        // -- REQUEST CHAIN --

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