ActionTokenArray


1   /* $Id: ActionTokenArray.java,v 1.2 2004/05/20 14:23:53 bures Exp $ */
2   
3   package SOFA.SOFAnode.Util;
4   
5   import java.util.Hashtable  ;
6   import java.util.Iterator  ;
7   
8   /**
9    * The class for collection of action tokens with support for
10   * lookup by action token with the same event name.
11   *
12   * @author Stanislav Visnovsky
13   * @version 1.0.0
14   *
15   * @see ActionToken
16  */
17  
18  public class ActionTokenArray {
19  
20      public boolean tokens[];
21  
22      public int size;
23  
24  /**
25   * Simple constructor of an empty array. Its size is determined from number 
26   * of all action tokens in EdgeFactory table.
27   *
28   * @author  Stanislav Visnovsky
29   * @version 2.0.0
30   * @see EdgeFactory#ActionTokens
31   */
32      public ActionTokenArray() {
33          tokens = new boolean[ EdgeFactory.getActionTokensNum() ];
34      size = EdgeFactory.getActionTokensNum();
35      }
36  
37  /**
38   * Simple copy constructor of a collection from hashtable. This requires that 
39   * EdgeFactory.ActionTokens contains all action tokens in hashtable.
40   *
41   * @author  Stanislav Visnovsky
42   * @version 2.0.0
43   * @see EdgeFactory.ActionTokens
44   */
45      public ActionTokenArray( Hashtable   h ) {
46      this();
47      Debug.println(3, "ActionTokenArray: This is hashtable copy constructor");
48      for( Iterator   i = h.values().iterator(); i.hasNext(); ) {
49          ActionToken t = (ActionToken)i.next() ;
50          if( t.isEvent() ) {
51          int j = EdgeFactory.getActionTokenIdx( new ActionToken( "?"+t.name) );
52          this.tokens[j] = true;
53  //      this.tokens[ EdgeFactory.inverseActionTokens[j]] = true;
54          } else tokens[ EdgeFactory.getActionTokenIdx( t )] = true;
55      }
56      Debug.println(3, "ActionTokenArray: Finished hashtable copy constructor");
57      }
58    
59  /**
60   * Simple copy constructor of a collection from other array
61   *
62   * @author  Stanislav Visnovsky
63   * @version 2.0.0
64   */
65      public ActionTokenArray( ActionTokenArray h ) {
66      this();
67      for( int i = 0 ; i < h.size ; i ++ ) 
68          tokens[i] = h.tokens[i];
69      }
70    
71  /**
72   * Constructor of an collection from an array of strings representing action tokens or events.
73   * If an element does not have an action suffix, it creates two action tokens correponding to
74   * the request and the response.
75   *
76   * @author  Stanislav Visnovsky
77   * @version 2.0.0
78   */
79      public ActionTokenArray( String  [] tokens ) {
80  
81      this.tokens = new boolean[ EdgeFactory.getActionTokensNum()];
82      size = EdgeFactory.getActionTokensNum();
83  
84      // fill the collection
85          for( int i=0; i<tokens.length ; i++ ) {
86              ActionToken a = new ActionToken(tokens[i]);
87              if( a.isSimpleCall() ) {
88          int j = EdgeFactory.getActionTokenIdx( new ActionToken(tokens[i]+"^") );
89          this.tokens[j] = true;
90          j = EdgeFactory.getActionTokenIdx( new ActionToken(tokens[i]+"$").toInverseActionToken() );
91          this.tokens[ j ] = true;
92          } else this.tokens[EdgeFactory.getActionTokenIdx( new ActionToken( tokens[i]))] = true;
93      }
94      }
95  
96  /**
97   * Method for membership test for the action token with the same
98   * event as t has.
99   *
100  * @author  Stanislav Visnovsky
101  * @version 2.0.0
102  *
103  * @return      true if collection contains corresponding action token
104  * @param t     t with event to lookup
105  *
106  * @see ActionToken#toInverseActionToken
107  * @see ActionToken#toTauActionToken
108  */
109     public boolean containsWithEventName( int tran ) {
110     if( tran == -1 ) return false;
111         int inverse = EdgeFactory.inverseActionTokens[tran];
112     if( inverse == -1 ) inverse = tran;
113         int tau = EdgeFactory.tauActionTokens[tran];
114     if( tau == -1 ) tau = tran;
115 
116     return ( tokens[ tran ] || tokens[ inverse ] || tokens[tau] );
117     }
118 
119 /**
120  * Transforms the collection into a comma-separated list of action tokens.
121  *
122  * @author  Stanislav Visnovsky
123  * @version 1.0.0
124  *
125  * @return      generated list
126  *
127  */
128     public String   toList() {
129         String   l = "";
130     for( int i = 0 ; i<size ; i ++ ) 
131         if( tokens[i] ) 
132         l = l + "," + EdgeFactory.ActionTokens[i].name;
133 
134         if( l != "" ) l = l.substring(1); // eliminate leading ,
135         Debug.println( 3, "List of tokens: "+l );
136         return l;
137     }
138 }
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