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1
25
26 package org.objectweb.speedo.tutorial.appli.additional.detach;
27
28 import java.io.IOException  ;
29
30 import javax.jdo.PersistenceManager;
31 import javax.jdo.PersistenceManagerFactory;
32 import javax.jdo.FetchPlan;
33 import javax.jdo.JDODetachedFieldAccessException;
34
35 import org.objectweb.speedo.tutorial.pobjects.additional.detach.Address;
36 import org.objectweb.speedo.tutorial.pobjects.additional.detach.Author;
37 import org.objectweb.speedo.tutorial.pobjects.additional.detach.Book;
38 import org.objectweb.speedo.tutorial.pobjects.additional.detach.Editor;
39 import org.objectweb.speedo.tutorial.TutorialHelper;
40
41
44 public class TutorialStep7 {
45
46 private static PersistenceManagerFactory pmf = null;
47
48
51 public static void fetchPlan() {
52 System.out.println( "***************fetchPlan*****************");
53 PersistenceManager pm = pmf.getPersistenceManager();
54 usePredefinedFetchGroups(pm);
55 useDefinedFetchGroups(pm);
56 pm.close();
57 }
58
59
64 public static void usePredefinedFetchGroups(PersistenceManager pm){
65 FetchPlan fp = pm.getFetchPlan();
67
68 Author author = new Author("William S. Burroughs");
70 Address address = new Address("Fenton Street", "931ZR2", "Leeds");
71 Editor editor = new Editor("Mille et Une Nuits", address);
72 Book book = new Book("The Yage Letters", author, editor, 1955);
73
74 pm.currentTransaction().begin();
76 System.out.println( "make persistent the book " + book.toString());
77 pm.makePersistent(book);
78 pm.currentTransaction().commit();
79
80 Book defaultBook = (Book) pm.detachCopy(book);
84 System.out.println( "With the default fetchgroup:");
85 try{
86 System.out.println( "Title can be accessed: " + defaultBook.getTitle());
87 System.out.println( "Year can be accessed: " + defaultBook.getYear());
88 System.out.println( "Author should not be accessed: " + defaultBook.getAuthor().toString());
89 System.out.println( "Editor should not be accessed: " + defaultBook.getEditor().toString());
90 }
91 catch(Exception e){
92 if(e instanceof JDODetachedFieldAccessException && e.getMessage().indexOf("author") != -1)
93 System.out.println( "Correct exception caught: " + e.getMessage());
94 else
95 System.out.println( "Error: " + e);
96 }
97
98 fp.addGroup("all").removeGroup("default");
101 Book allBook = (Book) pm.detachCopy(book);
102 System.out.println( "With the all fetchgroup:");
103 try{
104 System.out.println( "Title can be accessed: " + allBook.getTitle());
105 System.out.println( "Year can be accessed: " + allBook.getYear());
106 System.out.println( "Author can be accessed: " + allBook.getAuthor().toString());
107 System.out.println( "Editor can be accessed: " + allBook.getEditor().toString());
108 }
109 catch(Exception e){
110 System.out.println( "Error: " + e);
111 }
112 }
113
114
117 public static void useDefinedFetchGroups(PersistenceManager pm){
118 FetchPlan fp = pm.getFetchPlan();
120
121 Author author = new Author("John Fante");
123 Address address = new Address("South Street", "211ZL2", "York");
124 Editor editor = new Editor("Plon", address);
125 Book book = new Book("Bandini", author, editor, 1938);
126
127 pm.currentTransaction().begin();
129 System.out.println( "make persistent the book " + book.toString());
130 pm.makePersistent(book);
131 pm.currentTransaction().commit();
132 fp.addGroup("onlyAuthor").removeGroup("default");
136 Book onlyAuthorBook = (Book) pm.detachCopy(book);
137 System.out.println( "With the onlyAuthor fetchgroup:");
138 try{
139 System.out.println( "Title can be accessed: " + onlyAuthorBook.getTitle());
140 System.out.println( "Year can be accessed: " + onlyAuthorBook.getYear());
141 System.out.println( "Author can be accessed: " + onlyAuthorBook.getAuthor().toString());
142 System.out.println( "Editor should not be accessed: " + onlyAuthorBook.getEditor().toString());
143 }
144 catch(Exception e){
145 if(e instanceof JDODetachedFieldAccessException && e.getMessage().indexOf("editor") != -1)
146 System.out.println( "Correct exception caught: " + e.getMessage());
147 else
148 System.out.println( "Error: " + e);
149 }
150
151 fp.addGroup("editorName").removeGroup("onlyAuthor");
155 Book editorNameBook = (Book) pm.detachCopy(book);
156 System.out.println( "With the editorName fetchgroup:");
157 try{
158 System.out.println( "Title can be accessed: " + editorNameBook.getTitle());
159 System.out.println( "Year can be accessed: " + editorNameBook.getYear());
160 System.out.println( "Editor name can be accessed: " + editorNameBook.getEditor().getName());
161 System.out.println( "Editor address should not be accessed: " + editorNameBook.getEditor().getAddress().toString());
162 System.out.println( "Author should not be accessed: " + editorNameBook.getAuthor().toString());
163 }
164 catch(Exception e){
165 if(e instanceof JDODetachedFieldAccessException && e.getMessage().indexOf("address") != -1)
166 System.out.println( "Correct exception caught: " + e.getMessage());
167 else
168 System.out.println( "Error: " + e);
169 }
170 }
171
172 public static void main(String [] args){
173 TutorialHelper th = null;
174 try {
175 th = new TutorialHelper(args[0]);
176 } catch (IOException e) {
177 e.printStackTrace();
178 System.exit(-1);
179 }
180 TutorialStep7.pmf = th.getPMF();
181 TutorialStep7.fetchPlan();
182 }
183
184 }
185 |
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