ContactGeonamesExtensionPoint.java

package ch.elexis.core.ui.contacts.extension;

import java.util.HashMap;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.Platform;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import ch.elexis.core.types.Country;

import ch.elexis.core.ui.contacts.interfaces.IContactGenoameService;

public class ContactGeonamesExtensionPoint {
	private static final String EXT_POINT = "ch.elexis.core.ui.contacts.geonames";
	
	private static Logger log = LoggerFactory.getLogger(ContactGeonamesExtensionPoint.class);
	
	private static HashMap<Country, IContactGenoameService> services = new HashMap<>();
	
	public static void init(){
		IConfigurationElement[] config =
			Platform.getExtensionRegistry().getConfigurationElementsFor(EXT_POINT);
		for (IConfigurationElement ice : config) {
			try {
				final Object o = ice.createExecutableExtension("geonames");
				if (o instanceof IContactGenoameService) {
					IContactGenoameService cgs = (IContactGenoameService) o;
					log.debug("IContactGenoameService found @ " + ice.getContributor().getName()
						+ ": " + o.getClass().getName());
					services.put(cgs.getProvidesInformationForCountry(), cgs);
				}
				return;
			} catch (CoreException ex) {
				log.error("Error at IContactGenoameService extension initialization", ex);
			}
		}
		
		// TODO shall we initialize them?
	}
	
	public static IContactGenoameService getGeonameServiceForCountry(Country country){
		return services.get(country);
	}
	
}