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From "Lorenzo Bernacchioni (JIRA)" <j...@apache.org>
Subject [jira] [Created] (WW-4410) Custom configuration providers accessing servlet-context
Date Thu, 02 Oct 2014 14:50:34 GMT
Lorenzo Bernacchioni created WW-4410:
----------------------------------------

             Summary: Custom configuration providers accessing servlet-context
                 Key: WW-4410
                 URL: https://issues.apache.org/jira/browse/WW-4410
             Project: Struts 2
          Issue Type: Improvement
          Components: Dispatch Filter
            Reporter: Lorenzo Bernacchioni
            Priority: Minor


I'm using custom configuration providers following the suggestion of [this post|http://cppoon.wordpress.com/2013/11/11/change-apache-struts2-configuration-programmatically/comment-page-1/#comment-157].

I figured out that my custom configuration provider needed access to the servlet-context so
I patched the code to let, in case the constructor is available, instantiate a ConfigurationProvider
with the servlet-context as argument

{code}
    private void init_CustomConfigurationProviders() {
        String configProvs = initParams.get("configProviders");
        if (configProvs != null) {
            String[] classes = configProvs.split("\\s*[,]\\s*");
            for (String cname : classes) {
                try {
                    Class cls = ClassLoaderUtil.loadClass(cname, this.getClass());
                    
                    ConfigurationProvider prov;
					try {
						Constructor constructor = cls.getConstructor(ServletContext.class);
						prov = (ConfigurationProvider)constructor.newInstance(servletContext);
					} catch (Exception e) {
						prov = (ConfigurationProvider)cls.newInstance();	
					}
                    configurationManager.addContainerProvider(prov);
                } catch (InstantiationException e) {
                    throw new ConfigurationException("Unable to instantiate provider: "+cname,
e);
                } catch (IllegalAccessException e) {
                    throw new ConfigurationException("Unable to access provider: "+cname,
e);
                } catch (ClassNotFoundException e) {
                    throw new ConfigurationException("Unable to locate provider class: "+cname,
e);
                }
            }
        }
    }
{code}



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