[jira] Created: (CAMEL-3215) @PropertyInjected - An annotation to inject a property from Camel properties

[Claus Ibsen (JIRA)]

@PropertyInjected - An annotation to inject a property from Camel properties
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                 Key: CAMEL-3215
                 URL: https://issues.apache.org/activemq/browse/CAMEL-3215
             Project: Apache Camel
          Issue Type: New Feature
          Components: camel-core
    Affects Versions: 2.4.0
            Reporter: Claus Ibsen
            Priority: Minor
             Fix For: Future


This is just an idea. Suppose you have a RouteBuilder in Java DSL and you need 
a timeout value to be defined in a properties file
{code}
aggregateTimeout=20000
{code}

And then you want to use this timeout value in the RouteBuilder
{code}
from("xxx").aggregate(header("group"), 
myStrategy).completionTimeout(timeout).to("zzz");
{code}

The problem is that the DSL requires the timeout to be an integer because that 
makes sense. So we can't use the property placeholder directly in the DSL as 
its a String type.
eg. the following is *not* possible
{code}
from("xxx").aggregate(header("group"), 
myStrategy).completionTimeout("{{aggregationTimeout}}").to("zzz");
{code}

What we may need is to inject the timeout value in the RouteBuilder in a field

{code}
@PropertyInjected("aggregationTimeout")
private int timeout;
{code}

The @PropertyInjected annotation tells Camel to go look for the 
aggregationTimeout property and convert the value to the same type of the 
field, which is an int.
Now you can use that value in the Java DSL

There may be other or standard annotations/injections possible.

Any though?

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