[CAMEL-7831] create a java8 only demo showing how to use lambda expressions for Predicate / Expression inside the Java DSL (using Message as a typesafe parameter)

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.18.0
• Component/s: examples
• Estimated Complexity: Unknown
• Assignee: Luca Burgazzoli
• Reporter: James Strachan
• Created: 17/Sep/14 12:45
• Updated: 08/Sep/16 15:43
• Resolved: 08/Sep/16 15:43

Description

e.g. so folks can type things like

from("seda:cheese").
  filter(m -> m.getHeader("foo", int.class) > 5).
  map(m -> createPurchaseOrder(m.getBody(Invoice.class)).
  to("seda:bar");

Note if the current Predicate/Expression classes don't work as lambdas we could add a new interface with a single method to the DSL to ensure Java 8 does the right thing with lambdas

Issue Links

• relates to: CAMEL-7832 create a java 8 demo of RX to show typesafe filtering and transforming of messages
• relates to: CAMEL-9018 camel-archetype-java8
• relates to: CAMEL-10140 Java 8 type safe process DSL