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Chapter 259. RMI Component

Available as of Camel version 1.0

The rmi: component binds Exchanges to the RMI protocol (JRMP).

Since this binding is just using RMI, normal RMI rules still apply regarding what methods can be invoked. This component supports only Exchanges that carry a method invocation from an interface that extends the Remote interface. All parameters in the method should be either Serializable or Remote objects.

Maven users will need to add the following dependency to their pom.xml for this component: 

<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-rmi</artifactId>
    <version>x.x.x</version>
    <!-- use the same version as your Camel core version -->
</dependency>
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259.1. URI format
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rmi://rmi-regisitry-host:rmi-registry-port/registry-path[?options]
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For example: 

rmi://localhost:1099/path/to/service
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You can append query options to the URI in the following format, ?option=value&option=value&…​

259.2. Options
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The RMI component has no options.

The RMI endpoint is configured using URI syntax: 

rmi:hostname:port/name
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with the following path and query parameters:

259.2.1. Path Parameters (3 parameters):
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Expand
NameDescriptionDefaultType

hostname

Hostname of RMI server

localhost

String

name

Required Name to use when binding to RMI server

 

String

port

Port number of RMI server

1099

int

259.2.2. Query Parameters (6 parameters):
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Expand
NameDescriptionDefaultType

method (common)

You can set the name of the method to invoke.

 

String

remoteInterfaces (common)

To specific the remote interfaces.

 

List

bridgeErrorHandler (consumer)

Allows for bridging the consumer to the Camel routing Error Handler, which mean any exceptions occurred while the consumer is trying to pickup incoming messages, or the likes, will now be processed as a message and handled by the routing Error Handler. By default the consumer will use the org.apache.camel.spi.ExceptionHandler to deal with exceptions, that will be logged at WARN or ERROR level and ignored.

false

boolean

exceptionHandler (consumer)

To let the consumer use a custom ExceptionHandler. Notice if the option bridgeErrorHandler is enabled then this options is not in use. By default the consumer will deal with exceptions, that will be logged at WARN or ERROR level and ignored.

 

ExceptionHandler

exchangePattern (consumer)

Sets the exchange pattern when the consumer creates an exchange.

 

ExchangePattern

synchronous (advanced)

Sets whether synchronous processing should be strictly used, or Camel is allowed to use asynchronous processing (if supported).

false

boolean

259.3. Using
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To call out to an existing RMI service registered in an RMI registry, create a route similar to the following: 

from("pojo:foo").to("rmi://localhost:1099/foo");
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To bind an existing camel processor or service in an RMI registry, define an RMI endpoint as follows: 

RmiEndpoint endpoint= (RmiEndpoint) endpoint("rmi://localhost:1099/bar");
endpoint.setRemoteInterfaces(ISay.class);
from(endpoint).to("pojo:bar");
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Note that when binding an RMI consumer endpoint, you must specify the Remote interfaces exposed.

In XML DSL you can do as follows from Camel 2.7 onwards: 

    <camel:route>
        <from uri="rmi://localhost:37541/helloServiceBean?remoteInterfaces=org.apache.camel.example.osgi.HelloService"/>
        <to uri="bean:helloServiceBean"/>
    </camel:route>
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259.4. See Also
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  • Configuring Camel
  • Component
  • Endpoint
  • Getting Started
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