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Chapter 34. Direct

Direct Component
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The direct: component provides direct, synchronous invocation of any consumers when a producer sends a message exchange. This endpoint can be used to connect existing routes in the same camel context.
Note
The SEDA component provides asynchronous invocation of any consumers when a producer sends a message exchange.
Note
The VM component provides connections between Camel contexts as long they run in the same JVM.

URI format
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direct:someName[?options]
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Where someName can be any string to uniquely identify the endpoint

Options
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Expand
Name Default Value Description
block false Camel 2.11.1: If sending a message to a direct endpoint which has no active consumer, then we can tell the producer to block and wait for the consumer to become active.
timeout 30000 Camel 2.11.1: The timeout value to use if block is enabled.
failIfNoConsumers true
Camel 2.16.0: Indicates whether the producer should fail by throwing an exception when sending to a DIRECT endpoint with no active consumers.
You can append query options to the URI in the following format, ?option=value&option=value&...

Samples
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In the route below we use the direct component to link the two routes together: 
from("activemq:queue:order.in")
    .to("bean:orderServer?method=validate")
    .to("direct:processOrder");

from("direct:processOrder")
    .to("bean:orderService?method=process")
    .to("activemq:queue:order.out");
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And the sample using spring DSL: 
   <route>
     <from uri="activemq:queue:order.in"/>
     <to uri="bean:orderService?method=validate"/>
     <to uri="direct:processOrder"/>
  </route>

  <route>
     <from uri="direct:processOrder"/>
     <to uri="bean:orderService?method=process"/>
     <to uri="activemq:queue:order.out"/>
  </route>
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See also samples from the SEDA component, how they can be used together.
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