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1
6
7 package SOFA.SOFAnet.Repository;
8
9 import java.io.*;
10 import java.util.*;
11 import SOFA.Util.XML;
12 import org.w3c.dom.*;
13 import org.xml.sax.SAXException  ;
14 import SOFA.SOFAnet.Core.Reporter;
15
16
21 public abstract class XMLStorageItem implements StorageItem, Serializable
22 {
23 protected String name;
24 protected File file;
25 protected boolean loaded;
26 protected String rootTag;
27
28
29 public XMLStorageItem(String name, File file, String rootTag)
30 {
31 loaded = false;
32 this.name = name;
33 this.file = file;
34 this.rootTag = rootTag;
35 }
36
37 public boolean isLoaded()
38 {
39 return loaded;
40 }
41
42 public void setLoaded(boolean loaded)
43 {
44 if (this.loaded != loaded)
45 {
46 this.loaded = loaded;
47 reset();
48 if (loaded) loadFromStorage();
49 }
50 }
51
52 public void loadFromStorage()
53 {
54 try
55 {
56 Document doc = XML.parse(file);
57 Element root = doc.getDocumentElement();
58 loadFromXML(root);
59 loaded = true;
60 }
61 catch (IOException e)
62 {
63 Reporter.error("Load of '" + rootTag + "' XML format from file '" + file + "' failed", e);
64 reset();
65 loaded = false;
66 }
67 catch (SAXException e)
68 {
69 Reporter.error("Parsing of '" + rootTag + "' XML format from file '" + file + "' failed" + e);
70 reset();
71 loaded = false;
72 }
73 }
74
75 public void saveToStorage()
76 {
77 loaded = true;
78 if (file == null) return;
79 try
80 {
81 Document doc = XML.newDocument();
82 Element root = doc.createElement(rootTag);
83 doc.appendChild(root);
84
85 saveToXML(root);
86
87 XML.dump(file, root);
88 }
89 catch (IOException e)
90 {
91 Reporter.error("Saving of '" + rootTag + "' XML format to file '" + file + "' failed", e);
92 }
93 }
94
95 public void deleteFromStorage()
96 {
97 file.delete();
98 }
99
100 public boolean toBeDeleted()
101 {
102 return false;
103 }
104
105 public String getName()
106 {
107 return name;
108 }
109
110 public File getFile()
111 {
112 return file;
113 }
114
115 public abstract void loadFromXML(Element element) throws SAXException ;
116 public abstract void saveToXML(Element element);
117 protected abstract void reset();
118 }
119 |
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