source/mircoders/producer/CompositeProducerFactory.java

   1 package mircoders.producer;
   2
   3 import java.util.*;
   4 import mir.entity.*;
   5 import mir.producer.*;
   6
   7 public class CompositeProducerFactory implements ProducerFactory {
   8   Map factories;          // verb -> Vector ( ProducerFactory )
   9
  10   public CompositeProducerFactory() {
  11     factories = new HashMap();
  12   }
  13
  14   public CompositeProducerFactory(ProducerFactory[] aSubProducerFactories) {
  15     this();
  16
  17     int i;
  18
  19     for (i=0; i<aSubProducerFactories.length; i++) {
  20       addFactory(aSubProducerFactories[i]);
  21     }
  22   }
  23
  24   private List factoriesForVerb(String aVerb) {
  25     List result;
  26
  27     result=(List) factories.get(aVerb);
  28
  29     if (result==null) {
  30       result=new Vector();
  31
  32       factories.put(aVerb, result);
  33     }
  34
  35     return result;
  36   }
  37
  38   public void addFactory(ProducerFactory aFactory) {
  39     Iterator i;
  40
  41     i=aFactory.verbs();
  42
  43     while (i.hasNext()) {
  44       factoriesForVerb((String) i.next()).add(aFactory);
  45     }
  46   }
  47
  48   public mir.producer.Producer makeProducer(String aVerb) throws ProducerFailure {
  49     CompositeProducer result = new CompositeProducer();
  50
  51     Iterator i=factoriesForVerb(aVerb).iterator();
  52
  53     while (i.hasNext())
  54       result.addProducer(((ProducerFactory) i.next()).makeProducer(aVerb));
  55
  56     return result;
  57   }
  58
  59   public Iterator verbs() {
  60     return factories.keySet().iterator();
  61   }
  62 }