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1 package com.daffodilwoods.daffodildb.utils.parser;
2
3 import java.io.ObjectInputStream  ;
4 import java.util.HashMap ;
5 import java.net.URL ;
6 import com.daffodilwoods.database.resource.*;
7 import java.io.*;
8
9 public class DaffodilClassLoader extends ClassLoader {
10 HashMap mapping = new HashMap ();
11 HashMap obfuscateMapping = new HashMap ();
12 HashMap qualifiedMapping = new HashMap ();
13
14 private DaffodilClassLoader() throws DException {
15 intialialiseObfuscatedHashMap();
16
17
18
19 }
20
21 protected Class findClass(String onlyClassName) throws ClassNotFoundException {
22 Object originalFullClassName = mapping.get(onlyClassName);
23 if (originalFullClassName == null) {
24 throw new ClassNotFoundException (onlyClassName +
25 " not found, converted class " +
26 originalFullClassName);
27 }
28 String obfuscatedClassName = (String ) obfuscateMapping.get(originalFullClassName);
29 if (obfuscatedClassName == null) {
30 obfuscatedClassName = (String ) originalFullClassName;
31 }
32 return Class.forName(obfuscatedClassName);
33 }
34
35 private void intialialiseObfuscatedHashMap() throws DException {
36 URL url = getClass().getResource("classes.obj");
37 if (url == null) {
38 throw new DException("DSE0", new Object [] {"Classes.obj file is missing in classpath."});
39 }
40 ObjectInputStream inputStream = null;
41 try {
42 inputStream = new ObjectInputStream (new BufferedInputStream(url.openStream()));
43 mapping = (HashMap ) inputStream.readObject();
44 inputStream.close();
45 } catch (ClassNotFoundException ex) {
46 throw new DException("DSE0", new Object [] {ex});
47 } catch (IOException ex) {
48 throw new DException("DSE0", new Object [] {ex});
49 }
50 url = getClass().getResource("AB.obj");
51 if (url != null) {
52 try {
53 inputStream = new ObjectInputStream (new BufferedInputStream(url.openStream()));
54 obfuscateMapping = (HashMap ) inputStream.readObject();
55 inputStream.close();
56 } catch (ClassNotFoundException ex) {
57 throw new DException("DSE0", new Object [] {ex});
58 } catch (IOException ex) {
59 throw new DException("DSE0", new Object [] {ex});
60 }
61 }
62 if (mapping == null) {
63 mapping = new HashMap ();
64 }
65 if (obfuscateMapping == null) {
66 obfuscateMapping = new HashMap ();
67 }
68 initialiseQualifiedMapping();
69 }
70
71 private void initialiseQualifiedMapping() {
72 Object [] obj = obfuscateMapping.keySet().toArray();
73 int length = obj.length;
74 for (int i = 0; i < length; i++) {
75 Object temp = obfuscateMapping.get(obj[i]);
76 qualifiedMapping.put(temp, obj[i]);
77 }
78 }
79
80 static DaffodilClassLoader daffodilClassloader;
81
82 public synchronized static DaffodilClassLoader getInstance() throws DException {
83 if (daffodilClassloader == null)
84 daffodilClassloader = new DaffodilClassLoader();
85 return daffodilClassloader;
86 }
87
88 public String getOfuscatedName(String qualifiedName) {
89 String ste = (String ) obfuscateMapping.get(qualifiedName);
90 return ste == null ? qualifiedName : ste;
91 }
92
93 public String getQualifiedName(String ofuscatedName) {
94 String ste = (String ) qualifiedMapping.get(ofuscatedName);
95 return ste == null ? ofuscatedName : ste;
96 }
97
98 protected Class loadClass(String name, boolean resolve) throws ClassNotFoundException {
99 Class c = findLoadedClass(name);
100 if (c == null) {
101 synchronized (name.intern()) {
102 c = findClass(name);
103 }
104 }
105 if (resolve) {
106 resolveClass(c);
107 }
108 return c;
109 }
110
111
152 }
153 |
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