Examples of org.apache.camel.processor.StreamResequencer

org.apache.camel.processor.StreamResequencer
A resequencer that re-orders a (continuous) stream of {@link Exchange}s. The algorithm implemented by {@link ResequencerEngine} is based on the detectionof gaps in a message stream rather than on a fixed batch size. Gap detection in combination with timeouts removes the constraint of having to know the number of messages of a sequence (i.e. the batch size) in advance.
Messages must contain a unique sequence number for which a predecessor and a successor is known. For example a message with the sequence number 3 has a predecessor message with the sequence number 2 and a successor message with the sequence number 4. The message sequence 2,3,5 has a gap because the sucessor of 3 is missing. The resequencer therefore has to retain message 5 until message 4 arrives (or a timeout occurs).
Instances of this class poll for {@link Exchange}s from a given endpoint. Resequencing work and the delivery of messages to the next processor is done within the single polling thread. @author Martin Krasser @version $Revision: 699788 $ @see ResequencerEngine

        ObjectHelper.notNull(expression, "expression", this);


        ExpressionResultComparator comparator = config.getComparator();
        comparator.setExpression(expression);


        StreamResequencer resequencer = new StreamResequencer(routeContext.getCamelContext(), processor, comparator);
        resequencer.setTimeout(config.getTimeout());
        resequencer.setCapacity(config.getCapacity());
        if (config.getIgnoreInvalidExchanges() != null) {
            resequencer.setIgnoreInvalidExchanges(config.getIgnoreInvalidExchanges());
        }
        return resequencer;
    }

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     */
    protected StreamResequencer createStreamResequencer(RouteContext routeContext, 
            StreamResequencerConfig config) throws Exception {
        config.getComparator().setExpressions(resolveExpressionList(routeContext));
        Processor processor = routeContext.createProcessor(this);
        StreamResequencer resequencer = new StreamResequencer(processor, config.getComparator());
        resequencer.setTimeout(config.getTimeout());
        resequencer.setCapacity(config.getCapacity());
        return resequencer;
        
    }

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        ObjectHelper.notNull(expression, "expression", this);


        ExpressionResultComparator comparator = config.getComparator();
        comparator.setExpression(expression);


        StreamResequencer resequencer = new StreamResequencer(routeContext.getCamelContext(), processor, comparator);
        resequencer.setTimeout(config.getTimeout());
        resequencer.setCapacity(config.getCapacity());
        return resequencer;
    }

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    protected StreamResequencer createStreamResequencer(RouteContext routeContext, 
            StreamResequencerConfig config) throws Exception {
        config.getComparator().setExpressions(resolveExpressionList(routeContext));
        Processor processor = routeContext.createProcessor(this);
        StreamResequencer resequencer = new StreamResequencer(processor, 
                config.getComparator(), config.getCapacity());
        resequencer.setTimeout(config.getTimeout());
        return resequencer;
        
    }

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        } else {
            comparator = config.getComparator();
        }
        comparator.setExpression(expression);


        StreamResequencer resequencer = new StreamResequencer(routeContext.getCamelContext(), internal, comparator);
        resequencer.setTimeout(config.getTimeout());
        resequencer.setCapacity(config.getCapacity());
        resequencer.setRejectOld(config.getRejectOld());
        if (config.getIgnoreInvalidExchanges() != null) {
            resequencer.setIgnoreInvalidExchanges(config.getIgnoreInvalidExchanges());
        }
        return resequencer;
    }

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    protected StreamResequencer createStreamResequencer(RouteContext routeContext,
            StreamResequencerConfig config) throws Exception {
        config.getComparator().setExpressions(resolveExpressionList(routeContext));
        Processor processor = routeContext.createProcessor(this);
        StreamResequencer resequencer = new StreamResequencer(processor,
                config.getComparator(), config.getCapacity());
        resequencer.setTimeout(config.getTimeout());
        return resequencer;


    }

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        ObjectHelper.notNull(expression, "expression", this);


        ExpressionResultComparator comparator = config.getComparator();
        comparator.setExpression(expression);


        StreamResequencer resequencer = new StreamResequencer(routeContext.getCamelContext(), processor, comparator);
        resequencer.setTimeout(config.getTimeout());
        resequencer.setCapacity(config.getCapacity());
        resequencer.setRejectOld(config.getRejectOld());
        if (config.getIgnoreInvalidExchanges() != null) {
            resequencer.setIgnoreInvalidExchanges(config.getIgnoreInvalidExchanges());
        }
        return resequencer;
    }

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        } else {
            comparator = config.getComparator();
        }
        comparator.setExpression(expression);


        StreamResequencer resequencer = new StreamResequencer(routeContext.getCamelContext(), internal, comparator);
        resequencer.setTimeout(config.getTimeout());
        resequencer.setCapacity(config.getCapacity());
        resequencer.setRejectOld(config.getRejectOld());
        if (config.getIgnoreInvalidExchanges() != null) {
            resequencer.setIgnoreInvalidExchanges(config.getIgnoreInvalidExchanges());
        }
        return resequencer;
    }

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    protected StreamResequencer createStreamResequencer(RouteContext routeContext, 
            StreamResequencerConfig config) throws Exception {


        config.getComparator().setExpressions(resolveExpressionList(routeContext));
        Processor processor = this.createChildProcessor(routeContext, true);
        StreamResequencer resequencer = new StreamResequencer(routeContext.getCamelContext(), processor, config.getComparator());
        resequencer.setTimeout(config.getTimeout());
        resequencer.setCapacity(config.getCapacity());
        return resequencer;
        
    }

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