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  */
  22 public abstract class AbstractBirthmarkExtractorService extends AbstractServiceProvider implements BirthmarkExtractorSpi{
  23     /**
  24      * returns a type of the birthmark this service provides.
  25      */
  26     @Override
  27     public abstract String getType();
  28
  29     /**
  30      * returns a localized description of the birthmark this service provides.
  31      */
  32     @Override
  33     public String getDescription(Locale locale){
  34         return LocalizedDescriptionManager.getInstance().getDescription(
  35             locale, getType(), LocalizedDescriptionManager.ServiceCategory.extractor
  36         );
  37     }
  38
  39     /**
  40      * returns a localized description of the birthmark in default locale.
  41      */
  42     @Override
  43     public String getDescription(){
  44         return getDescription(Locale.getDefault());
  45     }
  46
  47     @Override
  48     public abstract String getExtractorClassName();
  49
  50     /**
  51      * returns a extractor for the birthmark of this service.
  52      */
  53     @Override
  54     public BirthmarkExtractor getExtractor(BirthmarkSpi service){
  55         try{
  56             Class<?> c = Class.forName(getExtractorClassName());
  57             Class<? extends BirthmarkExtractor> clazz = c.asSubclass(BirthmarkExtractor.class);
  58             Constructor<? extends BirthmarkExtractor> constructor = clazz.getConstructor(BirthmarkSpi.class);
  59             return constructor.newInstance(service);
  60         } catch(NoSuchMethodException e){
  61         } catch(InstantiationException e){
  62         } catch(InvocationTargetException e){
  63         } catch(ClassNotFoundException e){
  64         } catch(IllegalAccessException e){
  65         }
  66         return null;
  67     }
  68 }
  69