Cookbook

This document describes various recipes for working with Camel

• Bean Integration describes how to work with beans and Camel in a loosely coupled way so that your beans do not have to depend on any Camel APIs
  • Annotation Based Expression Language binds expressions to method parameters
  • Bean Binding defines which methods are invoked and how the Message is converted into the parameters of the method when it is invoked
  • Bean Injection for injecting Camel related resources into your POJOs
  • Parameter Binding Annotations for extracting various headers, properties or payloads from a Message
  • POJO Consuming for consuming and possibly routing messages from Camel
  • POJO Producing for producing camel messages from your POJOs
  • RecipientList Annotation for creating a Recipient List from a POJO method
  • Using Exchange Pattern Annotations describes how pattern annotations can be used to change the behaviour of method invocations
• Hiding Middleware describes how to avoid your business logic being coupled to any particular middleware APIs allowing you to easily switch from in JVM SEDA to JMS, ActiveMQ, Hibernate, JPA, JDBC, iBatis or JavaSpace etc.
• Visualisation describes how to visualise your Enterprise Integration Patterns to help you understand your routing rules
• Business Activity Monitoring (BAM) for monitoring business processes across systems
• Extract Transform Load (ETL) to load data into systems or databases
• Testing for testing distributed and asynchronous systems using a messaging approach
  • Camel Test for creating test cases using a single Java class for all your configuration and routing
  • Spring Testing uses Spring Test together with either XML or Java Config to dependency inject your test classes
  • Guice uses Guice to dependency inject your test classes
• Templating is a great way to create service stubs to be able to test your system without some back end system.
• Database for working with databases
• Parallel Processing and Ordering on how using parallel processing and SEDA or JMS based load balancing can be achieved.
• Asynchronous Processing in Camel Routes.
• Implementing Virtual Topics on other JMS providers shows how to get the effect of Virtual Topics and avoid issues with JMS durable topics
• Camel Transport for CXF describes how to put the Camel context into the CXF transport layer.
• Fine Grained Control Over a Channel describes how to deliver a sequence of messages over a single channel and then stopping any more messages being sent over that channel. Typically used for sending data over a socket and then closing the socket.
• EventNotifier to log details about all sent Exchanges shows how to let Camels EventNotifier log all sent to endpoint events and how long time it took.
• Loading routes from XML files into an existing CamelContext.
• Using MDC logging with Camel
• Running Camel standalone and have it keep running shows how to keep Camel running when you run it standalone.
• Hazelcast Idempotent Repository Tutorial shows how to avoid to consume duplicated messages in a clustered environment.
• How to use Camel as a HTTP proxy between a client and server shows how to use Camel as a HTTP adapter/proxy between a client and HTTP service.