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

   1 package jp.sourceforge.stigmata.birthmarks.extractors;
   2
   3 import java.lang.reflect.Constructor;
   4 import java.lang.reflect.InvocationTargetException;
   5 import java.util.Locale;
   6
   7 import jp.sourceforge.stigmata.BirthmarkExtractor;
   8 import jp.sourceforge.stigmata.spi.AbstractServiceProvider;
   9 import jp.sourceforge.stigmata.spi.BirthmarkExtractorSpi;
  10 import jp.sourceforge.stigmata.spi.BirthmarkSpi;
  11 import jp.sourceforge.stigmata.utils.LocalizedDescriptionManager;
  12
  13 /**
  14  * Birthmark Service Provider Interface.
  15  *
  16  * @author Haruaki TAMADA
  17  */
  18 public abstract class AbstractBirthmarkExtractorService extends AbstractServiceProvider implements BirthmarkExtractorSpi{
  19     /**
  20      * returns a type of the birthmark this service provides.
  21      */
  22     @Override
  23     public abstract String getType();
  24
  25     /**
  26      * returns a localized description of the birthmark this service provides.
  27      */
  28     @Override
  29     public String getDescription(Locale locale){
  30         return LocalizedDescriptionManager.getInstance().getDescription(
  31             locale, getType(), LocalizedDescriptionManager.ServiceCategory.extractor
  32         );
  33     }
  34
  35     /**
  36      * returns a localized description of the birthmark in default locale.
  37      */
  38     @Override
  39     public String getDescription(){
  40         return getDescription(Locale.getDefault());
  41     }
  42
  43     @Override
  44     public abstract String getExtractorClassName();
  45
  46     /**
  47      * returns a extractor for the birthmark of this service.
  48      */
  49     @Override
  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