Apache Camel Development Guide
I. Implementing Enterprise Integration Patterns
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1. 1. Building Blocks for Route Definitions
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2. 2. Basic Principles of Route Building
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  1. 2.1. Pipeline Processing
  2. 2.2. Multiple Inputs
  3. 2.3. Exception Handling
    
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    2.3.1. onException Clause
    
    2.3.2. Error Handler
    
    2.3.3. doTry, doCatch, and doFinally
    
    2.3.4. Propagating SOAP Exceptions
  4. 2.4. Bean Integration
  5. 2.5. Creating Exchange Instances
  6. 2.6. Transforming Message Content
    
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    2.6.1. Simple Message Transformations
    
    2.6.2. Marshalling and Unmarshalling
    
    2.6.3. Endpoint Bindings
  7. 2.7. Property Placeholders
  8. 2.8. Threading Model
  9. 2.9. Controlling Start-Up and Shutdown of Routes
  10. 2.10. Scheduled Route Policy
    
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    2.10.1. Overview of Scheduled Route Policies
    
    2.10.2. Simple Scheduled Route Policy
    
    2.10.3. Cron Scheduled Route Policy
    
    2.10.4. Route Policy Factory
  11. 2.11. Metrics
  12. 2.12. JMX Naming
  13. 2.13. Performance and Optimization
3. 3. Introducing Enterprise Integration Patterns
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  1. 3.1. Overview of the Patterns
4. 4. Defining REST Services
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5. 5. Messaging Systems
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6. 6. Messaging Channels
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7. 7. Message Construction
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8. 8. Message Routing
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9. 9. Message Transformation
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10. 10. Messaging Endpoints
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11. 11. System Management
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II. Routing Expression and Predicate Languages
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1. 12. Introduction
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  1. 12.1. Overview of the Languages
  2. 12.2. How to Invoke an Expression Language
2. 13. Constant
3. 14. EL
4. 15. The File Language
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5. 16. Groovy
6. 17. Header
7. 18. JavaScript
8. 19. JoSQL
9. 20. JSonPath
10. 21. JXPath
11. 22. MVEL
12. 23. The Object-Graph Navigation Language(OGNL)
13. 24. PHP
14. 25. Exchange Property
15. 26. Python
16. 27. Ref
17. 28. Ruby
18. 29. The Simple Language
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19. 30. SpEL
20. 31. The XPath Language
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21. 32. XQuery
III. Web Services and Routing with Camel CXF
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1. 33. Demonstration Code for Camel/CXF
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  1. 33.1. Downloading and Installing the Demonstrations
  2. 33.2. Running the Demonstrations
2. 34. Java-First Service Implementation
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3. 35. WSDL-First Service Implementation
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4. 36. Implementing a WS Client
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5. 37. Pojo-Based Route
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6. 38. Payload-Based Route
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7. 39. Provider-Based Route
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8. 40. Proxying a Web Service
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9. 41. Filtering SOAP Message Headers
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IV. Programming EIP Components
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1. 42. Understanding Message Formats
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2. 43. Implementing a Processor
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3. 44. Type Converters
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4. 45. Producer and Consumer Templates
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  1. 45.1. Using the Producer Template
    
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    45.1.1. Introduction to the Producer Template
    
    45.1.2. Synchronous Send
    
    45.1.3. Synchronous Request with InOut Pattern
    
    45.1.4. Asynchronous Send
    
    45.1.5. Asynchronous Request with InOut Pattern
    
    45.1.6. Asynchronous Send with Callback
  2. 45.2. Using the Consumer Template
5. 46. Implementing a Component
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  1. 46.1. Component Architecture
    
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    46.1.1. Factory Patterns for a Component
    
    46.1.2. Using a Component in a Route
    
    46.1.3. Consumer Patterns and Threading
    
    46.1.4. Asynchronous Processing
  2. 46.2. How to Implement a Component
  3. 46.3. Auto-Discovery and Configuration
    
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    46.3.1. Setting Up Auto-Discovery
    
    46.3.2. Configuring a Component
6. 47. Component Interface
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  1. 47.1. The Component Interface
  2. 47.2. Implementing the Component Interface
7. 48. Endpoint Interface
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  1. 48.1. The Endpoint Interface
  2. 48.2. Implementing the Endpoint Interface
8. 49. Consumer Interface
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  1. 49.1. The Consumer Interface
  2. 49.2. Implementing the Consumer Interface
9. 50. Producer Interface
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  1. 50.1. The Producer Interface
  2. 50.2. Implementing the Producer Interface
10. 51. Exchange Interface
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  1. 51.1. The Exchange Interface
11. 52. Message Interface
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  1. 52.1. The Message Interface
  2. 52.2. Implementing the Message Interface
V. The API Component Framework
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1. 53. Introduction to the API Component Framework
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  1. 53.1. What is the API Component Framework?
  2. 53.2. How to use the Framework
2. 54. Getting Started with the Framework
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3. 55. Configuring the API Component Maven Plug-In
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Index
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Part II. Routing Expression and Predicate Languages

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This guide describes the basic syntax used by the evaluative languages supported by Apache Camel.

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Part II. Routing Expression and Predicate Languages