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1   package net.sf.quarrel.uml;
2   
3   import java.util.ArrayList;
4   import java.util.Collections;
5   import java.util.Iterator;
6   import java.util.List;
7   
8   public class StructuredElement
9           extends AbstractElement
10          implements OperationAggregator, AttributeAggregator {
11  
12      private final List _attributes = new ArrayList();
13      private final List _operations = new ArrayList();
14  
15      public StructuredElement(String name) {
16          super(name);
17      }
18  
19      public Iterator attributes() {
20          return Collections.unmodifiableList(_attributes).iterator();
21      }
22  
23      public void addAttribute(String attributeName) {
24          _attributes.add(new Attribute(attributeName));
25      }
26  
27      public Iterator operations() {
28          return Collections.unmodifiableList(_operations).iterator();
29      }
30  
31      public void addOperation(String operationName) {
32          _operations.add(new Operation(operationName));
33      }
34  }