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Java > Open Source Codes > org > jboss > axis > wsdl > symbolTable > UndefinedDelegate


1 /*
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55 package org.jboss.axis.wsdl.symbolTable;
56
57 import java.io.IOException JavaDoc;
58 import java.util.Vector JavaDoc;
59
60 /**
61  * This UndefinedDelegate class implements the common functions of UndefinedType and UndefinedElement.
62  */
63 public class UndefinedDelegate implements Undefined
64 {
65
66    private Vector JavaDoc list;
67    private TypeEntry undefinedType;
68
69    /**
70     * Constructor
71     */
72    UndefinedDelegate(TypeEntry te)
73    {
74       list = new Vector JavaDoc();
75       undefinedType = te;
76    }
77
78    /**
79     * Register referrant TypeEntry so that
80     * the code can update the TypeEntry when the Undefined Element or Type is defined
81     */
82    public void register(TypeEntry referrant)
83    {
84       list.add(referrant);
85    }
86
87    /**
88     * Call update with the actual TypeEntry. This updates all of the
89     * referrant TypeEntry's that were registered.
90     */
91    public void update(TypeEntry def) throws IOException JavaDoc
92    {
93       boolean done = false;
94       while (!done)
95       {
96          done = true; // Assume this is the last pass
97
98          // Call updatedUndefined for all items on the list
99 // updateUndefined returns true if the state of the te TypeEntry
100 // is changed. The outer loop is traversed until there are no more
101 // state changes.
102 for (int i = 0; i < list.size(); i++)
103          {
104             TypeEntry te = (TypeEntry)list.elementAt(i);
105             if (te.updateUndefined(undefinedType, def))
106                done = false; // Items still undefined, need another pass
107 }
108       }
109       // It is possible that the def TypeEntry depends on an Undefined type.
110 // If so, register all of the entries with the undefined type.
111 TypeEntry uType = def.getUndefinedTypeRef();
112       if (uType != null)
113       {
114          for (int i = 0; i < list.size(); i++)
115          {
116             TypeEntry te = (TypeEntry)list.elementAt(i);
117             ((Undefined)uType).register(te);
118          }
119       }
120    }
121 }
122
123 ;
124
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