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1
29 package net.sourceforge.groboutils.mbtf.v1.engine;
30
31
32 import net.sourceforge.groboutils.mbtf.v1.IState;
33 import net.sourceforge.groboutils.mbtf.v1.IValidate;
34 import net.sourceforge.groboutils.mbtf.v1.ITransition;
35 import net.sourceforge.groboutils.mbtf.v1.IPathHistory;
36 import net.sourceforge.groboutils.mbtf.v1.IErrors;
37
38 import java.util.Vector  ;
39
40 import org.apache.log4j.Logger;
41
42
43
53 public class PathHistoryImpl implements IPathHistory, Cloneable
54 {
55 private static final Logger LOG = Logger.getLogger( PathHistoryImpl.class );
56
57 private static interface IHistoryPart
58 {
59 public String toString();
60 }
61
62 private static class StateHistoryPart implements IHistoryPart
63 {
64 private IState state;
65
66 public StateHistoryPart( IState s )
67 {
68 this.state = s;
69 }
70
71 public String toString()
72 {
73 if (this.state == null)
74 {
75 return " finished terminal state.\n";
76 }
77 return " entered state '"+this.state.getName()+"'\n";
78 }
79 }
80
81 private static class TransHistoryPart implements IHistoryPart
82 {
83 private ITransition trans;
84
85 public TransHistoryPart( ITransition t )
86 {
87 this.trans = t;
88 }
89
90 public String toString()
91 {
92 return " followed transition '"+this.trans.getName()+"'\n";
93 }
94 }
95
96 private static abstract class ValidHistoryPart implements IHistoryPart
97 {
98 protected String err;
99
100 public ValidHistoryPart( IValidate v, IErrors e )
101 {
102 if (e != null && e.getErrors().length > 0)
103 {
104 this.err = e.toString();
105 }
106 else
107 {
108 this.err = "No errors.";
109 }
110 }
111 }
112
113 private static class StateValidHistoryPart extends ValidHistoryPart
114 {
115 private IState state;
116
117 public StateValidHistoryPart( IValidate v, IState s, IErrors e )
118 {
119 super( v, e );
120 this.state = s;
121 }
122
123 public String toString()
124 {
125 return " validated state '" + this.state.getName() + "': " +
126 this.err + "\n";
127 }
128 }
129
130 private static class TransValidHistoryPart extends ValidHistoryPart
131 {
132 private ITransition trans;
133
134 public TransValidHistoryPart( IValidate v, ITransition t, IErrors e )
135 {
136 super( v, e );
137 this.trans = t;
138 }
139
140 public String toString()
141 {
142 return " validated transition '" + this.trans.getName() + "': " +
143 this.err + "\n";
144 }
145 }
146
147
148
149 private int errorCount = 0;
150 private Vector history = new Vector ();
151
152
153
158 public void addState( IState s )
159 {
160 LOG.debug( "addState( "+s+" )" );
161 this.history.addElement( new StateHistoryPart( s ) );
162 LOG.debug( " - History is now: "+toString() );
163 }
164
165
166
169 public void addTransition( ITransition t )
170 {
171 LOG.debug( "addTransition( "+t+" )" );
172 this.history.addElement( new TransHistoryPart( t ) );
173 }
174
175
176
179 public void addValidate( IValidate val, IState owningState,
180 IErrors errors )
181 {
182 LOG.debug( "addValidate( "+val+", "+owningState+", "+errors+" )" );
183 if (errors != null)
184 {
185 this.errorCount += errors.getErrors().length;
186 }
187 this.history.addElement( new StateValidHistoryPart( val, owningState,
188 errors ) );
189 }
190
191
192
195 public void addValidate( IValidate val, ITransition owningTransition,
196 IErrors errors )
197 {
198 LOG.debug( "addValidate( "+val+", "+owningTransition+", "+errors+" )" );
199 if (errors != null)
200 {
201 this.errorCount += errors.getErrors().length;
202 }
203 this.history.addElement( new TransValidHistoryPart( val,
204 owningTransition, errors ) );
205 }
206
207
208
212 public int getErrorCount()
213 {
214 return this.errorCount;
215 }
216
217
218 public String toString()
219 {
220 IHistoryPart hp[] = new IHistoryPart[ this.history.size() ];
221 this.history.copyInto( hp );
222 if (hp.length <= 0)
223 {
224 return "[no history]";
225 }
226 StringBuffer sb = new StringBuffer ("[Path History:\n");
227 for (int i = 0; i < hp.length; ++i)
228 {
229 sb.append( hp[i] );
230 }
231 sb.append("\n]");
232 return sb.toString();
233 }
234
235
236 protected Object clone()
237 throws CloneNotSupportedException
238 {
239 PathHistoryImpl phi = (PathHistoryImpl)super.clone();
240 phi.errorCount = this.errorCount;
241 phi.history = (Vector )this.history.clone();
242
243 return phi;
244 }
245
246
247 public IPathHistory copy()
248 {
249 try
250 {
251 return (IPathHistory)clone();
252 }
253 catch (CloneNotSupportedException e)
254 {
255 throw new IllegalStateException ( e.toString() );
256 }
257 }
258 }
259
260 |
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