source/mircoders/producer/CompositeProducerFactory.java

   1 package mircoders.producer;
   2
   3 import java.util.*;
   4 import mir.entity.*;
   5 import mir.producer.*;
   6 import mircoders.storage.*;
   7
   8 public class CompositeProducerFactory implements ProducerFactory {
   9   Map factories;          // verb -> Vector ( ProducerFactory )
  10
  11   public CompositeProducerFactory() {
  12     factories = new HashMap();
  13   }
  14
  15   private List factoriesForVerb(String aVerb) {
  16     List result;
  17
  18     result=(List) factories.get(aVerb);
  19
  20     if (result==null) {
  21       result=new Vector();
  22
  23       factories.put(aVerb, result);
  24     }
  25
  26     return result;
  27   }
  28
  29   public void addFactory(ProducerFactory aFactory) {
  30     Iterator i;
  31
  32     i=aFactory.verbs();
  33
  34     while (i.hasNext()) {
  35       factoriesForVerb((String) i.next()).add(aFactory);
  36     }
  37   }
  38
  39   public mir.producer.Producer makeProducer(String aVerb) throws ProducerFailure {
  40     CompositeProducer result = new CompositeProducer();
  41
  42     Iterator i=factoriesForVerb(aVerb).iterator();
  43
  44     while (i.hasNext())
  45       result.addProducer(((ProducerFactory) i.next()).makeProducer(aVerb));
  46
  47     return result;
  48   }
  49
  50   public Iterator verbs() {
  51     return factories.keySet().iterator();
  52   }
  53 }