src/main/java/jp/sourceforge/stigmata/birthmarks/extractors/AbstractBirthmarkExtractorService.java

   1 package jp.sourceforge.stigmata.birthmarks.extractors;
   2
   3 /*
   4  * $Id$
   5  */
   6
   7 import java.lang.reflect.Constructor;
   8 import java.lang.reflect.InvocationTargetException;
   9 import java.util.Locale;
  10
  11 import jp.sourceforge.stigmata.BirthmarkExtractor;
  12 import jp.sourceforge.stigmata.spi.AbstractServiceProvider;
  13 import jp.sourceforge.stigmata.spi.BirthmarkExtractorSpi;
  14 import jp.sourceforge.stigmata.spi.BirthmarkSpi;
  15 import jp.sourceforge.stigmata.utils.LocalizedDescriptionManager;
  16
  17 /**
  18  * Birthmark Service Provider Interface.
  19  *
  20  * @author Haruaki TAMADA
  21  * @version $Revision$ $Date$
  22  */
  23 abstract class AbstractBirthmarkExtractorService extends AbstractServiceProvider implements BirthmarkExtractorSpi{
  24     /**
  25      * returns a type of the birthmark this service provides.
  26      */
  27     public abstract String getType();
  28
  29     /**
  30      * returns a localized description of the birthmark this service provides.
  31      */
  32     public String getDescription(Locale locale){
  33         return LocalizedDescriptionManager.getInstance().getDescription(
  34             locale, getType(), LocalizedDescriptionManager.ServiceCategory.extractor
  35         );
  36     }
  37
  38     /**
  39      * returns a localized description of the birthmark in default locale.
  40      */
  41     public String getDescription(){
  42         return getDescription(Locale.getDefault());
  43     }
  44
  45     public abstract String getExtractorClassName();
  46
  47     /**
  48      * returns a extractor for the birthmark of this service.
  49      */
  50     public BirthmarkExtractor getExtractor(BirthmarkSpi service){
  51         try{
  52             Class<?> c = Class.forName(getExtractorClassName());
  53             Class<? extends BirthmarkExtractor> clazz = c.asSubclass(BirthmarkExtractor.class);
  54             Constructor<? extends BirthmarkExtractor> constructor = clazz.getConstructor(BirthmarkSpi.class);
  55             return constructor.newInstance(service);
  56         } catch(NoSuchMethodException e){
  57         } catch(InstantiationException e){
  58         } catch(InvocationTargetException e){
  59         } catch(ClassNotFoundException e){
  60         } catch(IllegalAccessException e){
  61         }
  62         return null;
  63     }
  64 }
  65