|
1
15 package org.apache.tapestry.wap.quiz;
16
17 import java.io.BufferedReader  ;
18 import java.io.FileReader ;
19 import java.io.IOException ;
20 import java.io.Serializable ;
21 import java.net.URL ;
22 import java.util.ArrayList ;
23 import java.util.HashMap ;
24 import java.util.List ;
25 import java.util.Map ;
26
27 import javax.servlet.ServletContext ;
28
29 import org.apache.hivemind.Resource;
30 import org.apache.tapestry.ApplicationServlet;
31 import org.apache.tapestry.IRequestCycle;
32 import org.apache.tapestry.engine.IPropertySource;
33 import org.apache.tapestry.request.RequestContext;
34 import org.apache.tapestry.resource.ContextResource;
35 import org.apache.tapestry.util.StringSplitter;
36
37
50
51 public class Global implements Serializable
52 {
53 private boolean init = false;
54
55 private int points[];
56 private String names[];
57
58 private static final List easyQuestions = new ArrayList ();
59 private static final List mediumQuestions = new ArrayList ();
60 private static final List hardQuestions = new ArrayList ();
61
62 public static final int EASY_QUESTIONS = 1;
63 public static final int MEDIUM_QUESTIONS = 2;
64 public static final int HARD_QUESTIONS = 3;
65
66 public static final String EASY_LEVEL = "easy";
67 public static final String MEDIUM_LEVEL = "medium";
68 public static final String HARD_LEVEL = "hard";
69
70 public static final String QUESTION_KEY = "question";
71 public static final String ANSWER_KEY = "answer";
72 public static final String CHOICES_KEY = "choices";
73
74 public List getHighscores()
75 {
76 List result = new ArrayList ();
77 for (int i = 0; i < 9; i++)
78 {
79 String name = names[i];
80 if (!"nobody".equals(name))
81 {
82 Map map = new HashMap ();
83 map.put("name", name);
84 map.put("score", new Integer (points[i]));
85 result.add(map);
86 }
87 }
88 return result;
89 }
90
91
94 public boolean isHighscore(int score)
95 {
96 return (score >= points[9]);
97 }
98
99
102 public boolean isNewHighscore(int score)
103 {
104 return (score > points[9]);
105 }
106
107
111 public int addHighscore(int score, String name)
112 {
113 int i = -1;
114 if (isNewHighscore(score))
115 {
116 for (i = 0; i <= 9; i++)
117 {
118 if (score > points[i])
119 break;
120 }
121 for (int j = 9; j >= i + 1; j--)
122 {
123 points[j] = points[j - 1];
124 names[j] = names[j - 1];
125 }
126 points[i] = score;
127 names[i] = name;
128 }
129 return i;
130 }
131
132
138 public int getQuestionSet(String level)
139 {
140 if (HARD_LEVEL.equals(level))
141 return HARD_QUESTIONS;
142 if (MEDIUM_LEVEL.equals(level))
143 return MEDIUM_QUESTIONS;
144 return EASY_QUESTIONS;
145 }
146
147
154 public Map getQuestion(int questionToBeAsked, int questionSet)
155 {
156 String line;
157 List list;
158
159 switch (questionSet)
160 {
161 case EASY_QUESTIONS :
162 list = easyQuestions;
163 break;
164 case MEDIUM_QUESTIONS :
165 list = mediumQuestions;
166 break;
167 default :
168 list = hardQuestions;
169 break;
170 }
171 line = (String ) list.get(questionToBeAsked);
172 StringSplitter splitter = new StringSplitter(';');
173 String [] result = splitter.splitToArray(line);
174 HashMap map = new HashMap ();
175 map.put(QUESTION_KEY, result[0]);
176 int answer = Integer.parseInt(result[1]) - 1;
177 map.put(ANSWER_KEY, new Integer (answer));
178 int length = result.length - 2;
179 String [] choices = new String [length];
180 System.arraycopy(result, 2, choices, 0, length);
181 map.put(CHOICES_KEY, choices);
182 return map;
183 }
184
185
191 public int getNumberOfQuestions(int questionSet)
192 {
193 switch (questionSet)
194 {
195 case EASY_QUESTIONS :
196 return easyQuestions.size();
197 case MEDIUM_QUESTIONS :
198 return mediumQuestions.size();
199 default :
200 return hardQuestions.size();
201 }
202 }
203
204 public void initialize(IRequestCycle cycle)
205 {
206 if (!init)
207 {
208 RequestContext requestContext = cycle.getRequestContext();
209 ApplicationServlet servlet = requestContext.getServlet();
210 ServletContext context = servlet.getServletContext();
211 IPropertySource propertySource = cycle.getEngine().getPropertySource();
212
213 Resource webInfLocation = new ContextResource(context, "/WEB-INF/");
214
215 Resource webInfAppLocation =
216 webInfLocation.getRelativeResource(servlet.getServletName() + "/");
217
218 readQuestions(
219 easyQuestions,
220 webInfAppLocation,
221 propertySource.getPropertyValue("easyquestionsfile"));
222 readQuestions(
223 mediumQuestions,
224 webInfAppLocation,
225 propertySource.getPropertyValue("mediumquestiosfile"));
226 readQuestions(
227 hardQuestions,
228 webInfAppLocation,
229 propertySource.getPropertyValue("hardquestionsfile"));
230 points = new int[10];
231 names = new String [10];
232 for (int i = 0; i <= 9; i++)
233 {
234 points[i] = 0;
235 names[i] = "nobody";
236 }
237 init = true;
238 }
239 }
240
241
248 private void readQuestions(List questions, String questionsFile) throws IOException
249 {
250 BufferedReader reader = null;
251 String line;
252 reader = new BufferedReader (new FileReader (questionsFile));
253 while ((line = reader.readLine()) != null)
254 {
255 if (line.trim().equals(""))
256 break;
257 questions.add(line);
258 }
259 }
260
261 private void readQuestions(List questions, Resource folder, String filename)
262 {
263 Resource resource = folder.getRelativeResource(filename);
264
265 URL url = resource.getResourceURL();
266
267 try
268 {
269 readQuestions(questions, url.getFile());
270 }
271 catch (IOException e)
272 {
273 e.printStackTrace(System.err);
274 }
275 }
276
277 }
278 |
Popular Tags |
Java API By Example, From Geeks To Geeks.