Custom "absorbing" PropertyPlaceholderConfigurer
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Key: CAMEL-3547
URL: https://issues.apache.org/jira/browse/CAMEL-3547
Project: Camel
Issue Type: Improvement
Components: camel-core
Reporter: Dan Checkoway
Priority: Minor
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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