org.ow2.jonas.camel.component
Class RouteBuilderComponent

java.lang.Object
  org.apache.camel.builder.BuilderSupport
      org.apache.camel.builder.RouteBuilder
          org.ow2.jonas.camel.component.RouteBuilderComponent

All Implemented Interfaces:

org.apache.camel.RoutesBuilder

public abstract class RouteBuilderComponent
extends org.apache.camel.builder.RouteBuilder

iPOJO component that creates a CAMEL context with:

• CAROL classes accessed, so that the BND tool automatically adds CAROL-related classes to the bundle's Import-Package declarations
• All CAMEL XML registry files and XML registry property files read from $JONAS_BASE/conf and injected into the CAMEL context
• The local JNDI registry added to the CAMEL context's registry, to ease lookups with the jdbc component for instance
• The JMS component bound on the JNDI registry
• The bundle's ClassLoader positioned on the current thread, to avoid any class loading issues with dynamic components such as JNDI, JMS or CXF
• The CAMEL trace component logging into the logger named TRACE_LOGGER_NAME
• If traceDestination is not null, traces also sending a message to that endpoint

In order to use it:

• Override the configure() method, making sure you first call super.configure() in your implementation
• Make sure the org.ow2.jonas.camel.component package is in your bundle's Private-Package list
• Make sure the metadata.xml file has the required definitions:

  <ipojo ...
   ...
     <component ...
   ...
       <requires optional="false"
                 specification="org.ow2.jonas.camel.service.api.ICamelService">
         <callback type="bind" method="setCamelService" />
       </requires>
   
       <callback transition="validate" method="start" />
       <callback transition="invalidate" method="stop" />
   ...
     </component>
   ...
   </ipojo>

Field Summary

protected org.osgi.framework.BundleContext	bundleContext The OSGi bundle context.
protected String	camelContextName The Camel context name.
protected ICamelService	camelService The Camel service.
protected Map<String,String>	registryReplacements Replacements to do in the registry.
static String	TRACE_LOGGER_NAME
protected String	traceDestination The external trace destination, might be null.

Fields inherited from class org.apache.camel.builder.RouteBuilder

log

Constructor Summary

RouteBuilderComponent(org.osgi.framework.BundleContext bundleContext)
Saves the bundle context and gets the JONAS_BASE/conf folder.

Method Summary

void	configure() Configures the Camel context with the tracer.
protected void	configureCamelComponents(org.apache.camel.CamelContext camelContext, List<String> registryFilesContent) Configure CAMEL components, called just before registry injection. By default, the jms component is configured to use the JCF connection factory on JNDI. You can override this method to configure other components, for example jdbc.
File	getConfigurationFolder()
File	getFileEndpointFile(String url)
String	getRegistryPropertyOrReplacement(String key) Returns the value of a certain key in the contents of all camel*.properties files in JONAS_BASE/conf merged with registryReplacements.
String	getRouteName()
void	setCamelService(ICamelService camelService)
void	start() Start the Camel context.
void	stop() Stop the Camel context.

Methods inherited from class org.apache.camel.builder.RouteBuilder

addRoutes, addRoutesToCamelContext, checkInitialized, configureRoute, configureRoutes, createContainer, errorHandler, from, from, from, from, fromF, getContext, getRouteCollection, includeRoutes, intercept, interceptFrom, interceptFrom, interceptSendToEndpoint, onCompletion, onException, onException, populateRoutes, setErrorHandlerBuilder, setRouteCollection, toString

Methods inherited from class org.apache.camel.builder.BuilderSupport

bean, bean, bean, bean, body, body, constant, createErrorHandlerBuilder, deadLetterChannel, deadLetterChannel, defaultErrorHandler, endpoint, endpoint, endpoints, endpoints, exceptionMessage, faultBody, faultBodyAs, getErrorHandlerBuilder, header, loggingErrorHandler, loggingErrorHandler, loggingErrorHandler, loggingErrorHandler, method, method, method, method, noErrorHandler, outBody, outBody, property, regexReplaceAll, regexReplaceAll, sendTo, setContext, setContext, simple, simple, systemProperty, systemProperty, xpath

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

TRACE_LOGGER_NAME

public static final String TRACE_LOGGER_NAME

See Also:

Constant Field Values

bundleContext

protected org.osgi.framework.BundleContext bundleContext

The OSGi bundle context. Obtained via constructor.

camelService

protected ICamelService camelService

The Camel service. Injected by the container.

registryReplacements

protected Map<String,String> registryReplacements

Replacements to do in the registry.

camelContextName

protected String camelContextName

The Camel context name.

traceDestination

protected String traceDestination

The external trace destination, might be null.

Constructor Detail

RouteBuilderComponent

public RouteBuilderComponent(org.osgi.framework.BundleContext bundleContext)

Saves the bundle context and gets the JONAS_BASE/conf folder.

Method Detail

start

public void start()
           throws Throwable

Start the Camel context.

Throws:

Throwable

stop

public void stop()
          throws Throwable

Stop the Camel context.

Throws:

Throwable

configureCamelComponents

protected void configureCamelComponents(org.apache.camel.CamelContext camelContext,
                                        List<String> registryFilesContent)
                                 throws Exception

Configure CAMEL components, called just before registry injection.

By default, the jms component is configured to use the JCF connection factory on JNDI.

You can override this method to configure other components, for example jdbc.

Parameters:

camelContext - CAMEL context.

registryFilesContent - Actual contents of the CAMEL registry files (with all variables replaced).

Throws:

Exception

configure

public void configure()
               throws Exception

Configures the Camel context with the tracer.

Specified by:

configure in class org.apache.camel.builder.RouteBuilder

Throws:

Exception

setCamelService

public void setCamelService(ICamelService camelService)

Parameters:

camelService - Camel service to inject.

getConfigurationFolder

public final File getConfigurationFolder()

Returns:

The JONAS_BASE/conf folder.

getRegistryPropertyOrReplacement

public final String getRegistryPropertyOrReplacement(String key)

Returns the value of a certain key in the contents of all camel*.properties files in JONAS_BASE/conf merged with registryReplacements.

Parameters:

key - the key to look for.

Returns:

the corresponding value.

Throws:

IllegalArgumentException - if key not found.

getRouteName

public String getRouteName()

Returns:

The route bundle's symbolic name. This implementation generates the name based on the OSGi bundle JAR's location.

getFileEndpointFile

public File getFileEndpointFile(String url)

Returns:

The File object (source or target) of a Camel endpoint of type "file".