[jira] [Resolved] (CAMEL-3547) Custom "absorbing" PropertyPlaceholderConfigurer

["Claus Ibsen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CAMEL-3547?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Claus Ibsen resolved CAMEL-3547.
--------------------------------

    Resolution: Fixed

Updated docs at
https://cwiki.apache.org/confluence/display/CAMEL/Using+PropertyPlaceholder
                
> Custom "absorbing" PropertyPlaceholderConfigurer
> ------------------------------------------------
>
>                 Key: CAMEL-3547
>                 URL: https://issues.apache.org/jira/browse/CAMEL-3547
>             Project: Camel
>          Issue Type: New Feature
>          Components: camel-spring
>    Affects Versions: 2.5.0
>            Reporter: Dan Checkoway
>            Assignee: Claus Ibsen
>            Priority: Minor
>             Fix For: 2.10.0
>
>
> I find Camel's property placeholder support clumsy.  I already use Spring's PropertyPlaceholderConfigurer, and I feel like Camel should be able to harness that.  I realize Spring doesn't make it easy to access those properties, but I have come up with a way to enable Camel to use them...
> By simply extending PropertyPlaceholderConfigurer, we will be able to intercept and absorb the properties that Spring has access to:
> {{
> import java.util.Properties;
> import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
> import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer;
> public class CamelPropertyPlaceholderConfigurer extends PropertyPlaceholderConfigurer {
>     private final Properties properties = new Properties();
>     
>     @Override
>     protected void processProperties(ConfigurableListableBeanFactory beanFactory, Properties props) {
>         super.processProperties(beanFactory, props);
>         // "Absorb" all properties that pass through so we can expose them later
>         properties.putAll(props);
>     }
>     /** Expose all absorbed properties */
>     public final Properties getProperties() {
>         return properties;
>     }
> }
> }}
> It means users who want to take advantage of this would need to instantiate this instead of the stock PropertyPlaceholderConfigurer, but that's no problem:
>   <bean class="org.apache.camel.impl.CamelPropertyPlaceholderConfigurer">
>     <p:location="..."/>
>   </bean>
> That way, you wouldn't need to declare a "duplicating" <propertyPlaceholer> in the CamelContext.  What do you think, is this feasible?

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