001    package com.thaiopensource.relaxng.impl;
002    
003    import com.thaiopensource.xml.util.Name;
004    
005    class ChoiceNameClass implements NameClass {
006    
007      private final NameClass nameClass1;
008      private final NameClass nameClass2;
009    
010      ChoiceNameClass(NameClass nameClass1, NameClass nameClass2) {
011        this.nameClass1 = nameClass1;
012        this.nameClass2 = nameClass2;
013      }
014    
015      public boolean contains(Name name) {
016        return (nameClass1.contains(name)
017                || nameClass2.contains(name));
018      }
019    
020      public int containsSpecificity(Name name) {
021        return Math.max(nameClass1.containsSpecificity(name),
022                        nameClass2.containsSpecificity(name));
023      }
024    
025      public int hashCode() {
026        return nameClass1.hashCode() ^ nameClass2.hashCode();
027      }
028    
029      public boolean equals(Object obj) {
030        if (obj == null || !(obj instanceof ChoiceNameClass))
031          return false;
032        ChoiceNameClass other = (ChoiceNameClass)obj;
033        return (nameClass1.equals(other.nameClass1)
034                && nameClass2.equals(other.nameClass2));
035      }
036    
037      public void accept(NameClassVisitor visitor) {
038        visitor.visitChoice(nameClass1, nameClass2);
039      }
040    
041      public boolean isOpen() {
042        return nameClass1.isOpen() || nameClass2.isOpen();
043      }
044    }